CN205718643U - The heat-exchange unit of pressure fixing system - Google Patents
The heat-exchange unit of pressure fixing system Download PDFInfo
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- CN205718643U CN205718643U CN201620149649.4U CN201620149649U CN205718643U CN 205718643 U CN205718643 U CN 205718643U CN 201620149649 U CN201620149649 U CN 201620149649U CN 205718643 U CN205718643 U CN 205718643U
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- pressure transmitter
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Abstract
The heat-exchange unit of a kind of pressure fixing system, belongs to manufacture and the control technical field of plate type regenerator group.It includes return pipe (2) and the feed pipe (8) being arranged on two heat-exchangerss of the plate type being connected in parallel (7), it is characterized in that: be sequentially provided with secondary network water return outlet (1), the first pressure transmitter (3), catch-basin (5), relief valve (4), water charging system and two circulating pumps being connected in parallel (6) on described return pipe (2), described feed pipe (8) is provided with the second pressure transmitter (3a), temperature transmitter (3b) and secondary network feed water inlet (9)；Described water charging system uses softening water tank (13) to be connected two small pumps being connected in parallel (11) by moisturizing oral siphon (12), and small pump (11) is connected to return pipe (2) by moisturizing outlet pipe (10)；Described small pump (11), circulating pump (6), the first pressure transmitter (3), the second pressure transmitter (3a) and temperature transmitter (3b) are electrically connected with controller (14), electrical control cubicles (15) respectively.This unit has blood circulation and water charging system in secondary pipe network, has secondary water-supply temp. control function and Isobarically Control function, meets user and use requirement.It is constant that this unit reaches unit pressure by the way of controlling water charging system and relief valve, thus meets the demand of user, reaches energy-conservation effect.
Description
Technical field
This utility model relates to the heat-exchange unit of a kind of pressure fixing system, belongs to manufacture and the control technical field of plate type regenerator group.
Background technology
At present, plate-type heat-exchange unit is mainly used in concentrated supply of heating in the city field, plate-type heat-exchange unit is made up of the auxiliary device etc. of heat-exchangers of the plate type, water pump, instrument, electrical equipment, control system and necessity, it is achieved between fluid, heat is exchanged for the heat-exchanger rig of purpose.Make heat exchange base station more energy-conservation along with its appearance simultaneously, more intelligent.Along with national energy-saving reduces discharging deepening continuously of thought, central heating is universal in China's major part heating area, and even in south, some high-grade communities also begin to carry out central heating.Central heating allows for many arcola rooms and has made heat exchange station therewith into, and the most newly-built community and mansion are also at ground or the underground investment construction heat exchange station of modernization.Heat exchange station uses again plate-type heat-exchange unit as the basic equipment in station as the basal cell of central heating, and the regular maintenance of this basic equipment is the cost that heating enterprise has to take into account that.
Along with social development, plate type regenerator group demand is strengthened by the industry such as central heating, central air-conditioning, electric power year by year.Need the plate type regenerator group time to compare concentration every year due to every profession and trade, thus the biggest to the production pressure of heat exchanger enterprise, affect the workmanship of heat-exchange unit.The design of plate type regenerator group produces and complex relate to many work posts and has coordinated to designing, produce and inspection being required for many time and completes, and season in autumn in summer two is all concentrated on every year mainly for delivery date, owing to Lead Time is concentrated, producer needs to concentrate various strength to complete annual major part order, not only cause design, manufacture and test level declines, and strong influence product quality and supply of material rate on schedule.In view of Lead Time and energy-conservation problem, be simple to manufacture maintenance, easy to control be necessary.Exploitation pressure fixing system unit is the most necessary in sum.
Summary of the invention
For solving problems of the prior art, this utility model provides the heat-exchange unit of a kind of pressure fixing system, expend that man-hour is many, power consumption is big, keep in repair, control difficulty, reduce manually-operated problem solving unit design manufacture complexity, to simplify unit design step and to improve unit and manufacture efficiency and make problem simple to operate.
The technical solution adopted in the utility model is: the heat-exchange unit of a kind of pressure fixing system, it includes being arranged on the return pipe on two heat-exchangerss of the plate type being connected in parallel and feed pipe, being sequentially provided with secondary network water return outlet, the first pressure transmitter, catch-basin, relief valve, water charging system and two circulating pumps being connected in parallel on described return pipe, described feed pipe is provided with the second pressure transmitter, temperature transmitter and secondary network feed water inlet；Described water charging system uses softening water tank to be connected two small pumps being connected in parallel by moisturizing oral siphon, and small pump is connected to return pipe by moisturizing outlet pipe；Described small pump, circulating pump, the first pressure transmitter, the second pressure transmitter and temperature transmitter are electrically connected with controller, electrical control cubicles respectively.
The beneficial effects of the utility model are: this heat-exchange unit includes that secondary network water return outlet is through pressure transmitter, relief valve, water charging system access, heat-exchangers of the plate type, two grades of net feed water inlets.Electrical control cubicles, controller (RTU) are electrically connected with the first pressure transmitter, the second pressure transmitter, temperature transmitter, circulating pump and small pump.This unit has blood circulation and water charging system in secondary pipe network, has secondary water-supply temp. control function and Isobarically Control function, meets user and use requirement.It is constant that this unit reaches unit pressure by the way of controlling water charging system and relief valve, thus reaches user's request, and reduces water pump service life and energy-conservation effect.
In secondary pipe network, circulating pump, small pump all use VFC.Unit is after putting into operation, and because many reasons not necessarily can run under rated load, after particularly realizing household-based heat metering, load variations fluctuation is very big, and the resistance of secondary pipe webmaster also changes, and heat exchanger supply head changes the most therewith.Running for backwater pressure reduction control small pump ring pump frequency conversion by secondary network, reaches to save electric energy, the purpose of heat energy.Secondary records pressure signal for the pressure transducer on water return pipeline, calculate actual pressure differential value through RTU to contrast with controller pressure differential resetting value, regulate moisturizing frequency converter frequency after computing, change small pump revolution and the need of operation, thus realize secondary circulation system constant-pressure drop and run.When small pump shuts down, ductwork pressure increases, relief valve is opened, and reaches antihypertensive effect.Thus reach voltage regulation result.
Accompanying drawing explanation
Fig. 1 is the heat-exchange unit work sheet of a kind of pressure fixing system.
In figure: 1, secondary network water return outlet, 2, return pipe, the 3, first pressure transmitter, 3a, the second pressure transmitter, 3b, temperature transmitter, 4, relief valve, 5, catch-basin, 6, circulating pump, 7, heat-exchangers of the plate type, 8, feed pipe, 9, secondary network feed water inlet, 10, moisturizing outlet pipe, 11, small pump, 12, moisturizing oral siphon, 13, softening water tank, 14, controller, 15, electrical control cubicles.
Detailed description of the invention
Fig. 1 shows the heat-exchange unit of a kind of pressure fixing system.The heat-exchange unit of this pressure fixing system includes return pipe 2 and the feed pipe 8 being arranged on two heat-exchangerss of the plate type being connected in parallel, being sequentially provided with secondary network water return outlet the 1, first pressure transmitter 3, catch-basin 5, relief valve 4, water charging system and two circulating pumps being connected in parallel 6 on return pipe 2, feed pipe 8 is provided with the second pressure transmitter 3a, temperature transmitter 3b and secondary network feed water inlet 9.Water charging system uses softening water tank 13 to be connected two small pumps being connected in parallel 11 by moisturizing oral siphon 12, and small pump 11 is connected to return pipe 2 by moisturizing outlet pipe 10.Small pump 11, circulating pump the 6, first pressure transmitter the 3, second pressure transmitter 3a and temperature transmitter 3b are electrically connected with controller 14, electrical control cubicles 15 respectively.
When using technique scheme work, water is entered by secondary network water return outlet 1, heat-exchangers of the plate type 7 is entered into through the first pressure transmitter 3, catch-basin 5, relief valve 4, water charging system, circulating pump 6 by return pipe 2, again by feed pipe 8 through the second pressure transmitter 3a, temperature transmitter 3b, finally discharged by secondary network feed water inlet 9.Water charging system uses water to be added in return pipe 2 by water through moisturizing outlet pipe 10 by small pump 11 through moisturizing oral siphon 12 by softening water tank 13.Electrical control cubicles 15 is by controlling FREQUENCY CONTROL circulating pump 6 and the flow of small pump 11 of converter.
The pressure signal recorded on the first pressure transmitter 3 on return pipe 2 and the second pressure transmitter 3a on feed pipe 8, via controller 14 calculates actual pressure differential value and contrasts with controller 14 pressure differential resetting value, moisturizing frequency converter frequency is regulated after PID arithmetic, change circulating pump 6 rotating speed, thus realize secondary circulation system constant-pressure drop and run.When small pump 11 shuts down, ductwork pressure increases, relief valve 4 is opened, and reaches antihypertensive effect.Thus reach voltage regulation result.
Claims (1)
1. the heat-exchange unit of a pressure fixing system, it includes return pipe (2) and the feed pipe (8) being arranged on two heat-exchangerss of the plate type being connected in parallel (7), it is characterized in that: be sequentially provided with secondary network water return outlet (1), the first pressure transmitter (3), catch-basin (5), relief valve (4), water charging system and two circulating pumps being connected in parallel (6) on described return pipe (2), described feed pipe (8) is provided with the second pressure transmitter (3a), temperature transmitter (3b) and secondary network feed water inlet (9)；Described water charging system uses softening water tank (13) to be connected two small pumps being connected in parallel (11) by moisturizing oral siphon (12), and small pump (11) is connected to return pipe (2) by moisturizing outlet pipe (10)；Described small pump (11), circulating pump (6), the first pressure transmitter (3), the second pressure transmitter (3a) and temperature transmitter (3b) are electrically connected with controller (14), electrical control cubicles (15) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620149649.4U CN205718643U (en) | 2016-02-29 | 2016-02-29 | The heat-exchange unit of pressure fixing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620149649.4U CN205718643U (en) | 2016-02-29 | 2016-02-29 | The heat-exchange unit of pressure fixing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205718643U true CN205718643U (en) | 2016-11-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620149649.4U Expired - Fee Related CN205718643U (en) | 2016-02-29 | 2016-02-29 | The heat-exchange unit of pressure fixing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205718643U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109751901A (en) * | 2018-12-03 | 2019-05-14 | 湖南力和海得热能技术有限公司 | A kind of heat-exchange system is seamless alternative expression frequency conversion constant pressure and temperature regulating system and method |
-
2016
- 2016-02-29 CN CN201620149649.4U patent/CN205718643U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109751901A (en) * | 2018-12-03 | 2019-05-14 | 湖南力和海得热能技术有限公司 | A kind of heat-exchange system is seamless alternative expression frequency conversion constant pressure and temperature regulating system and method |
| CN109751901B (en) * | 2018-12-03 | 2020-10-27 | 湖南力和海得热能技术有限公司 | Adjusting method of seamless alternating type variable-frequency constant-pressure constant-temperature adjusting system of heat exchange system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161123 Termination date: 20170229 |