CN109915879A - Ethylene glycol non-freezing solution concentration control unit and control method - Google Patents
Ethylene glycol non-freezing solution concentration control unit and control method Download PDFInfo
- Publication number
- CN109915879A CN109915879A CN201910166512.8A CN201910166512A CN109915879A CN 109915879 A CN109915879 A CN 109915879A CN 201910166512 A CN201910166512 A CN 201910166512A CN 109915879 A CN109915879 A CN 109915879A
- Authority
- CN
- China
- Prior art keywords
- freezing solution
- hot water
- water pipe
- pipe net
- ethylene glycol
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 title claims abstract description 146
- 238000007710 freezing Methods 0.000 title claims abstract description 98
- 230000008014 freezing Effects 0.000 title claims abstract description 94
- 238000000034 method Methods 0.000 title claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 62
- 239000007788 liquid Substances 0.000 claims abstract description 52
- 239000012530 fluid Substances 0.000 claims abstract description 24
- 238000001802 infusion Methods 0.000 claims abstract description 23
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000000945 filler Substances 0.000 claims abstract description 5
- 206010020852 Hypertonia Diseases 0.000 claims description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims 1
- 230000003247 decreasing effect Effects 0.000 abstract description 2
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 238000004064 recycling Methods 0.000 abstract 1
- 230000002528 anti-freeze Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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- Pipeline Systems (AREA)
Abstract
The present invention relates to a kind of ethylene glycol non-freezing solution concentration control unit and control methods, pure water enters non-freezing solution liquid reserve tank by non-freezing solution liquid storage upper box part filler by respective control valve respectively with pure ethylene glycol and is mixed, and ethylene glycol non-freezing solution flows out through fluid infusion pump from non-freezing solution liquid storage lower box part liquid outlet and enters the cold and hot exchange of hot water pipe net progress；Fluid infusion pump and hot water pipe net connecting line pass through recycle control valve tieback non-freezing solution liquid storage upper box part all the way, and another way passes through safety valve tieback non-freezing solution liquid storage upper box part, has glycol concentration instrument and pressure sensor on non-freezing solution pipeline in hot water pipe net.Pass through the monitoring of concentration and pressure, cooperate the movement of each valve, effectively reasonably hot water pipe net non-freezing solution glycol concentration is adjusted according to extraneous minimum temperature, and using after ethylene glycol non-freezing solution concentration control unit, the recycling problem of non-freezing solution becomes simply, pollution of the ethylene glycol to environment can be greatly decreased.
Description
Technical field
The present invention relates to a kind of strength of fluid control technology, in particular to a kind of ethylene glycol non-freezing solution concentration control unit and
Control method.
Background technique
Heating system hot water pipe net currently on the market is antifreeze main by the way of manually launching ethylene glycol, this comparison
The freezing point temperature that extensive mode not can guarantee non-freezing solution can be consistently lower than environment temperature, especially make in extremely low environment temperature
Used time, there are the security risks that water pipe freezes.
Summary of the invention
It is not the problem of automatic adjustment leads to security risk the present invention be directed to ethylene glycol non-freezing solution concentration, proposes one kind
Ethylene glycol non-freezing solution concentration control unit and control method, according to actual minimum environment temperature reasonable set heating system hot water
The non-freezing solution glycol concentration of pipe network.Safety, which not only can be improved, can also improve heat exchange efficiency.
The technical solution of the present invention is as follows: a kind of ethylene glycol non-freezing solution concentration control unit, including non-freezing solution liquid reserve tank, fluid infusion
Pump, recycle control valve, safety valve, glycol concentration instrument and hot water pressure sensor, pure water and pure ethylene glycol pass through respectively respectively
Control valve non-freezing solution liquid reserve tank entered by non-freezing solution liquid storage upper box part filler mixed, ethylene glycol non-freezing solution never freezes
Liquid liquid storage lower box part liquid outlet flows out through fluid infusion pump and enters the cold and hot exchange of hot water pipe net progress；Fluid infusion pump is connect with hot water pipe net
Pipeline passes through recycle control valve tieback non-freezing solution liquid storage upper box part all the way, and another way passes through on safety valve tieback non-freezing solution liquid reserve tank
There are glycol concentration instrument and pressure sensor in portion on non-freezing solution pipeline in hot water pipe net.
The fluid infusion pump is selected as two one-way pumps arranged side by side, the using and the reserved.
The control method of the ethylene glycol non-freezing solution concentration control unit, pure water and pure ethylene glycol enter non-freezing solution liquid reserve tank
Afterwards, each end of hot water pipe net is pumped to by fluid infusion after mixing completion non-freezing solution concentration proportioning in non-freezing solution liquid reserve tank to set
It is standby to carry out cold and hot exchange；It is monitored in hot water pipe net respectively when hot water pipe net operates normally by glycol concentration instrument and pressure sensor
Non-freezing solution concentration and pressure；When non-freezing solution concentration is too low in hot water pipe net, recycle control valve is opened, and non-freezing solution is back to not
Freeze in liquid liquid reserve tank by fluid infusion pump again pumped back hot water pipe net after pure ethylene glycol liquid is added, it is repeated multiple times until glycol concentration
Reach requirement；When non-freezing solution excessive concentration in hot water pipe net, recycle control valve is opened, non-freezing solution is back to non-freezing solution liquid reserve tank
It is repeated multiple times until glycol concentration reaches requirement by fluid infusion pump again pumped back hot water pipe net after middle addition pure water；Work as hot water
It in pipe network when non-freezing solution hypertonia, opens recycle control valve and opens, until non-freezing solution pressure reduction is horizontal to requiring；Work as hot water
In pipe network when non-freezing solution hypotony, fluid infusion pump is opened, until non-freezing solution pressure rise is horizontal to requiring；When hot water pipe net internal pressure
Non-freezing solution directly opens discharge of safety valve and is back in liquid reserve tank when power is excessively high.
The beneficial effects of the present invention are: ethylene glycol non-freezing solution concentration control unit of the present invention and control method, it can not
The antifreeze way to manage for entering hot water pipe net with artificial dispensing ethylene glycol extensive in the past again is changed to on-line monitoring automatic adjustment
Mode, so that effectively reasonably hot water pipe net non-freezing solution glycol concentration be adjusted according to extraneous minimum temperature；Due to
The concentration of ethylene glycol is set according to minimum environment temperature can make non-freezing solution there is a situation where ethylene glycol dispensing excess
Heat transfer coefficient improves, and increases the heat exchange efficiency of hot water pipe net；After ethylene glycol non-freezing solution concentration control unit, non-freezing solution is returned
Receipts problem becomes simply, pollution of the ethylene glycol to environment can be greatly decreased.
Detailed description of the invention
Fig. 1 is ethylene glycol non-freezing solution concentration control unit structural schematic diagram of the present invention.
Specific embodiment
Ethylene glycol non-freezing solution concentration control unit structural schematic diagram as shown in Figure 1, including non-freezing solution liquid reserve tank 1, fluid infusion pump
2, recycle control valve 3, safety valve 4, online glycol concentration instrument 5 and in line pressure sensor 6, pure water passes through respectively with pure ethylene glycol
It crosses respective control valve non-freezing solution liquid reserve tank 1 is entered by 1 top filler of non-freezing solution liquid reserve tank and mixed, ethylene glycol does not freeze
Liquid, which from 1 lower part liquid outlet of non-freezing solution liquid reserve tank flows out through fluid infusion pump 2 and enters hot water pipe net, carries out cold and hot exchange, fluid infusion pump 2 with
Hot water pipe net connecting line passes through 3 tieback non-freezing solution liquid reserve tank of recycle control valve, 1 top all the way, and another way is returned by safety valve 4
1 top of non-freezing solution liquid reserve tank is connect, has glycol concentration instrument 5 and pressure sensor 6 on non-freezing solution pipeline in hot water pipe net.Control is single
Member is connect with hot water pipe net, for adjusting ethylene glycol non-freezing solution pressure and non-freezing solution concentration in pipe network.
Non-freezing solution liquid reserve tank 1 accesses pure water and pure ethylene glycol filler, and non-freezing solution concentration is completed in non-freezing solution liquid reserve tank 1
Cold and hot exchange is carried out through being pumped to each end-equipment in hot water pipe net by fluid infusion pump 2 after proportion；When hot water pipe net operates normally
Non-freezing solution concentration and pressure in hot water pipe net are monitored by glycol concentration instrument 5 and pressure sensor 6 respectively.1. working as hot water pipe net
When interior non-freezing solution concentration is too low, recycle control valve 3 is opened, and non-freezing solution, which is back in non-freezing solution liquid reserve tank 1, is added pure ethylene glycol liquid
It is repeated multiple times until glycol concentration reaches requirement afterwards by fluid infusion pump 2 again pumped back hot water pipe net；2. when in hot water pipe net not
When freezing liquid excessive concentration, recycle control valve 3 is opened, and non-freezing solution, which is back in non-freezing solution liquid reserve tank 1 to be added after pure water, pumps 2 by fluid infusion
Again pumped back hot water pipe net, it is repeated multiple times until glycol concentration reaches requirement；3. when non-freezing solution pressure mistake in hot water pipe net
When low, fluid infusion pump 2 is opened, until non-freezing solution pressure rise is horizontal to requiring；4. when non-freezing solution hypertonia in hot water pipe net,
Recycle control valve 3 is opened, until non-freezing solution pressure reduction is horizontal to requiring；5. such as hypertonia in hot water pipe net and more than system
When design pressure, non-freezing solution, which directly opens safety valve 4, releases and is back in liquid reserve tank 1.
Claims (3)
1. a kind of ethylene glycol non-freezing solution concentration control unit, which is characterized in that including non-freezing solution liquid reserve tank (1), fluid infusion pump (2),
Recycle control valve (3), safety valve (4), glycol concentration instrument (5) and hot water pressure sensor (6), pure water and pure ethylene glycol are distinguished
Enter non-freezing solution liquid reserve tank (1) by non-freezing solution liquid reserve tank (1) top filler by respective control valve to be mixed, second two
Alcohol non-freezing solution flows out through fluid infusion pump (2) from non-freezing solution liquid reserve tank (1) lower part liquid outlet and enters the cold and hot exchange of hot water pipe net progress；
Fluid infusion pump (2) and hot water pipe net connecting line pass through recycle control valve (3) tieback non-freezing solution liquid reserve tank (1) top all the way, another
Road passes through safety valve (4) tieback non-freezing solution liquid reserve tank (1) top, has glycol concentration instrument on non-freezing solution pipeline in hot water pipe net
(5) and pressure sensor (6).
2. ethylene glycol non-freezing solution concentration control unit according to claim 1, which is characterized in that the fluid infusion pump is selected as two
A one-way pump arranged side by side, the using and the reserved.
3. the control method of ethylene glycol non-freezing solution concentration control unit according to claim 1, which is characterized in that pure water with it is pure
After ethylene glycol enters non-freezing solution liquid reserve tank (1), mixing is passed through after completing non-freezing solution concentration proportioning by mending in non-freezing solution liquid reserve tank (1)
Liquid pump (2) is pumped to each end-equipment of hot water pipe net and carries out cold and hot exchange；By glycol concentration when hot water pipe net operates normally
Instrument (5) and pressure sensor (6) monitor non-freezing solution concentration and pressure in hot water pipe net respectively；When non-freezing solution is dense in hot water pipe net
When spending low, recycle control valve (3) is opened, and non-freezing solution is back in non-freezing solution liquid reserve tank (1) and is added after pure ethylene glycol liquid by mending
Liquid pump (2) pumped back hot water pipe net again, it is repeated multiple times until glycol concentration reaches requirement；When non-freezing solution is dense in hot water pipe net
It when spending high, opens recycle control valve (3), non-freezing solution, which is back in non-freezing solution liquid reserve tank (1) to be added after pure water, pumps (2) by fluid infusion
Again pumped back hot water pipe net, it is repeated multiple times until glycol concentration reaches requirement；When non-freezing solution hypertonia in hot water pipe net
When, it opens recycle control valve (3) and opens, until non-freezing solution pressure reduction is horizontal to requiring；When non-freezing solution pressure in hot water pipe net
When too low, fluid infusion pump (2) is opened, until non-freezing solution pressure rise is horizontal to requiring；Do not freeze when hypertonia in hot water pipe net
Liquid, which directly opens safety valve (4), releases and is back in liquid reserve tank (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910166512.8A CN109915879A (en) | 2019-03-06 | 2019-03-06 | Ethylene glycol non-freezing solution concentration control unit and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910166512.8A CN109915879A (en) | 2019-03-06 | 2019-03-06 | Ethylene glycol non-freezing solution concentration control unit and control method |
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| Publication Number | Publication Date |
|---|---|
| CN109915879A true CN109915879A (en) | 2019-06-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910166512.8A Pending CN109915879A (en) | 2019-03-06 | 2019-03-06 | Ethylene glycol non-freezing solution concentration control unit and control method |
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| CN (1) | CN109915879A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02158130A (en) * | 1988-12-10 | 1990-06-18 | Nemoto Tokushu Kagaku Kk | Alcohol concentration maintaining device |
| CN102589070A (en) * | 2012-02-23 | 2012-07-18 | 姜衍礼 | Hot water air conditioner system of solar air source heat pump |
| CN204923196U (en) * | 2015-09-01 | 2015-12-30 | 张文凯 | Concentrate - minute family solar water -heating pipe -line system |
| CN207245844U (en) * | 2017-09-19 | 2018-04-17 | 天津太古环保技术有限公司 | Automatic liquid feeding system of anti-freezing additive for road cleaning in winter |
| CN207975720U (en) * | 2018-03-26 | 2018-10-16 | 山东旭德新能源科技有限公司 | A kind of electric boiler and solar united use heating installation |
| CN108826774A (en) * | 2018-08-29 | 2018-11-16 | 杭州正行能源科技有限公司 | A kind of wide warm pump freezing point temperature running gear and its progress control method |
| CN109381761A (en) * | 2018-11-13 | 2019-02-26 | 重庆本善医疗设备有限公司 | The device and method for generating peritoneal dialysis liquid is diluted with concentrate |
| CN210035653U (en) * | 2019-03-06 | 2020-02-07 | 中国船舶重工集团公司第七0四研究所 | Concentration control device for glycol unfrozen liquid |
-
2019
- 2019-03-06 CN CN201910166512.8A patent/CN109915879A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02158130A (en) * | 1988-12-10 | 1990-06-18 | Nemoto Tokushu Kagaku Kk | Alcohol concentration maintaining device |
| CN102589070A (en) * | 2012-02-23 | 2012-07-18 | 姜衍礼 | Hot water air conditioner system of solar air source heat pump |
| CN204923196U (en) * | 2015-09-01 | 2015-12-30 | 张文凯 | Concentrate - minute family solar water -heating pipe -line system |
| CN207245844U (en) * | 2017-09-19 | 2018-04-17 | 天津太古环保技术有限公司 | Automatic liquid feeding system of anti-freezing additive for road cleaning in winter |
| CN207975720U (en) * | 2018-03-26 | 2018-10-16 | 山东旭德新能源科技有限公司 | A kind of electric boiler and solar united use heating installation |
| CN108826774A (en) * | 2018-08-29 | 2018-11-16 | 杭州正行能源科技有限公司 | A kind of wide warm pump freezing point temperature running gear and its progress control method |
| CN109381761A (en) * | 2018-11-13 | 2019-02-26 | 重庆本善医疗设备有限公司 | The device and method for generating peritoneal dialysis liquid is diluted with concentrate |
| CN210035653U (en) * | 2019-03-06 | 2020-02-07 | 中国船舶重工集团公司第七0四研究所 | Concentration control device for glycol unfrozen liquid |
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| PB01 | Publication | ||
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Application publication date: 20190621 |