CN103076258B - Ethylene glycol solution density automatic checkout equipment - Google Patents
Ethylene glycol solution density automatic checkout equipment Download PDFInfo
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- CN103076258B CN103076258B CN201210578828.6A CN201210578828A CN103076258B CN 103076258 B CN103076258 B CN 103076258B CN 201210578828 A CN201210578828 A CN 201210578828A CN 103076258 B CN103076258 B CN 103076258B
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- Prior art keywords
- ethylene glycol
- line densimeter
- glycol solution
- valve
- density
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- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 title claims abstract description 76
- 239000007788 liquid Substances 0.000 claims abstract description 14
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 230000008014 freezing Effects 0.000 abstract description 4
- 238000007710 freezing Methods 0.000 abstract description 4
- 238000005259 measurement Methods 0.000 abstract description 3
- 238000004378 air conditioning Methods 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 abstract description 2
- 238000005057 refrigeration Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- AEDZKIACDBYJLQ-UHFFFAOYSA-N ethane-1,2-diol;hydrate Chemical compound O.OCCO AEDZKIACDBYJLQ-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
Abstract
A kind of ethylene glycol solution density automatic checkout equipment, relates to the automatic detection field of air-conditioning refrigeration system, particularly relates to and automatically detects and read ethylene glycol density.Ethylene glycol solution density automatic checkout equipment, comprises on-line densimeter (1), PID reconciliation statement (5), direct supply (6), on-line densimeter (1), is arranged on refrigerating liquid pipeline; PID reconciliation statement (5), receives the data message that on-line densimeter (1) sends, and is reacted with after the density data of setting by this data message; Direct supply (6), for on-line densimeter (1) provides power supply.It is loaded down with trivial details that the present invention can make minimizing manual measurement bring, and can understand the density of ethylene glycol solution in system, to ensure that ethylene glycol solution density meets freezing point requirement.
Description
Technical field
The present invention relates to the automatic detection field of air-conditioning refrigeration system, particularly relate to and automatically detect and read ethylene glycol density.
Background technology
In order to prevent at low temperatures, in heat exchange coil, load glycol water replace water to do refrigerating medium, to ensure at low temperature condition heat exchange coil not by bursting by freezing.But the freezing point due to glycol water changes with concentration change, report to the police in order to ethylene glycol density can be observed the moment and realize 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 ethylene glycol solution density can be detected in real time.
Object 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 arranged on refrigerating liquid pipeline; The arm that on-line densimeter two ends are connected with refrigerating liquid pipeline arranges the first valve, the second valve respectively, the refrigerating liquid pipeline occupy between two arm accesses place is provided with the 3rd valve, described first valve, the second valve, the flow velocity of the 3rd valve for regulating on-line densimeter to measure liquid in pipe;
PID reconciliation statement receives the data message of on-line densimeter transmission and is reacted with after the density data of setting by this data message; Arrange a relay respectively at the upper and lower limit output port of PID reconciliation statement, connecting with a pilot lamp in a contact of relay, connects with a hummer in another contact of relay;
Direct supply provides power supply for on-line densimeter.
Further, on-line densimeter is install perpendicular to ground, and ethylene glycol solution flows through the direction of on-line densimeter for from the bottom up.
The triviality that the present invention can make minimizing manual measurement bring, can understand the density of ethylene glycol solution in system, to ensure that ethylene glycol solution density meets freezing point requirement.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of present pre-ferred embodiments;
Fig. 2 is the schematic diagram of the warning part of present pre-ferred embodiments;
Fig. 3 is the schematic diagram of one of present pre-ferred embodiments on-line densimeter installation;
Fig. 4 is the schematic diagram of two of present pre-ferred embodiments on-line densimeter installation.
Embodiment
Below in conjunction with embodiment, the invention will be further described.
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 arranged on refrigerating liquid pipeline; PID reconciliation statement 5, receives the data message that on-line densimeter 1 sends, and is reacted with after the density data of setting by this data message; Direct supply 6, for on-line densimeter 1 provides power supply.
As shown in Figure 3, Figure 4, the arm that on-line densimeter 1 two ends are connected with refrigerating liquid pipeline is arranged respectively the first valve 2, second valve 3, the refrigerating liquid pipeline occupy between two arm accesses place is provided with the 3rd valve 4, described first valve 2, second valve 3, the 3rd valve 4 flow velocity for regulating on-line densimeter to measure liquid in pipe.On-line densimeter 1 is install perpendicular to ground.Described connecting tube, valve are stainless material, and the pipeline that the first valve 2, second valve 3 being connected to on-line densimeter two ends and bore are DN50 matches, and main pipeline can meet the requirement of ethylene glycol water system, and the 3rd 4, valve and main pipeline match.The mounting means of pipe device is that ethylene glycol solution flows through the direction of on-line densimeter for from the bottom up, to ensure that ethylene glycol solution fills online density measuring pipeline section.When main pipeline is level, install as shown in Figure 3; When main pipeline is vertical direction, install as shown in Figure 4.In this enforcement, three valve employings is gate valve, and the opening degree of the 3rd valve 4 can make solution fill the measuring tube of on-line densimeter 1, and regulates the flow velocity measuring liquid in pipe.The model that the on-line densimeter of the present embodiment adopts new Wanshan Mountain finite instrument company of Zhuhai City 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 as 4-20mA, precision is 0.001g/cm
3.
As shown in Figure 2, arranging a relay 7 respectively at the upper and lower limit output port of PID reconciliation statement 5, connects with a pilot lamp 8 in a contact of relay 7.Connect with a hummer 9 in another contact of described relay.PID reconciliation statement, for can read 4-20mA current signal, has the warning output port of upper limit value and lower limit value, can arrange the PID reconciliation statement of upper and lower limit numerical value.Relay 7 for coil voltage be the coil of 220V alternating current, and normally opened contact can meet 220V feed circuit demand.The light fixture of pilot lamp 8 tool to be rated voltage be 220V, can play indicative function at the circuit of 220V.Warning device 9 can play alarm function in the circuit of 220V.
The AC power of 220V can be converted to 24V direct supply for 24V direct supply by direct supply 6.Arrange an air switch 10 in the line, air switch can meet the effect playing break-make power supply in 220V alternating circuit.
In circuit, the power circuit of supply on-line densimeter collector, and the circuit reading data adopts shielding line.
The upper lower limit value of setting can provide timely and exceed higher limit or the warning lower than 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 on-line densimeter warning circuit according to Fig. 2.Warning upper lower limit value is set according to the parameter declaration of PID reconciliation statement.And check circuit, to ensure that components and parts all can normally use.
Claims (3)
1. an 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 arranged on refrigerating liquid pipeline; The arm that on-line densimeter two ends are connected with refrigerating liquid pipeline arranges the first valve (2), the second valve (3) respectively, the refrigerating liquid pipeline occupy between two arm accesses place is provided with the 3rd valve (4), described first valve (2), the second valve (3), the flow velocity of the 3rd valve (4) for regulating on-line densimeter to measure liquid in pipe;
PID reconciliation statement (5) receives the data message that on-line densimeter (1) sends, and is reacted with after the density data of setting by this data message; At the upper and lower limit output port of PID reconciliation statement (5), a relay (7) is set respectively, connecting with a pilot lamp (8) in a contact of relay (7), connects with a hummer (9) in another contact of relay;
Direct supply (6) provides power supply for on-line densimeter (1).
2. ethylene glycol solution density automatic checkout equipment according to claim 1, is characterized in that: on-line densimeter (1) is for installing perpendicular to ground, and ethylene glycol solution flows through the direction of on-line densimeter for from the bottom up.
3. ethylene glycol solution density automatic checkout equipment according to claim 1, it is characterized in that: described PID reconciliation statement (5) is for can read 4-20mA current signal, there is the warning output port of upper limit value and lower limit value, the PID reconciliation statement of upper and lower limit numerical value can be set.
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 CN103076258A (en) | 2013-05-01 |
| CN103076258B true CN103076258B (en) | 2016-01-20 |
Family
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Family Applications (1)
| 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 |
Country Status (1)
| Country | Link |
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| CN (1) | CN103076258B (en) |
Families Citing this family (2)
| 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 |
| CN115235942A (en) * | 2022-06-24 | 2022-10-25 | 丁大新 | Monitoring method and electronic equipment for transfer work in tank farm |
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 |
|---|
| "NEW UNIVERSAL DETECTOR FOR HIGH-PERFORMANCE LIQUID CHROMATOGRY:THE DENSITY DETECTOR";BERND TRATHNIGG et al.;《Journal of Chromatography》;19871231;第385卷;第17-23页 * |
| "在线测量原油密度计特性";王志学;《油气储运》;19961231;第15卷(第8期);第37-39页 * |
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| CN103076258A (en) | 2013-05-01 |
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