CN209605656U - A kind of self-stripping system for plate heat exchanger - Google Patents
A kind of self-stripping system for plate heat exchanger Download PDFInfo
- Publication number
- CN209605656U CN209605656U CN201822141876.4U CN201822141876U CN209605656U CN 209605656 U CN209605656 U CN 209605656U CN 201822141876 U CN201822141876 U CN 201822141876U CN 209605656 U CN209605656 U CN 209605656U
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- China
- Prior art keywords
- electric butterfly
- heat exchanger
- butterfly valve
- plate heat
- secondary water
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Abstract
The utility model relates to a kind of self-stripping systems for plate heat exchanger, including the first pressure transmitter and the first electric butterfly valve being successively laid on secondary water-supply pipeline；Second pressure transmitter, water circulating pump, automatic medicine adding apparatus and the third electric butterfly valve being successively laid on secondary water return pipeline；Connect the connecting pipe of secondary confession/water return pipeline；Control cabinet, it is interior to be equipped with a programmable logic controller (PLC), it is connected respectively with the first/bis- pressure transmitter, the first/bis-/tri- electric butterfly valves, water circulating pump, electromagnetic relief valve.Self-stripping system disclosed by the utility model has the advantages that 1, realizes the auto-flushing to plate heat exchanger；2, plate heat exchanger is cleaned in the case where having ensured heating system normal table；3, the flushing operation workload of plate heat exchanger is reduced.
Description
Technical field
The utility model relates to a kind of self-stripping systems for plate heat exchanger.
Background technique
Central heating system mostly uses greatly indirect heating, i.e., is exchanged heat using heat exchanger.Heat exchanger (also known as heat exchange
Device or heat-exchange apparatus) it is, to meet the device that defined technique requires, to be for making heat be transmitted to cold fluid from hot fluid
A kind of industrial application of convective heat transfer and heat transfer.Heat exchanger can differently classify.It can be divided by its operating process
Dividing wall type, hybrid, heat accumulating type (or back-heating type) three categories；Close-coupled and non-compact can be divided by the compactness on its surface
Two class of formula.
Plate heat exchanger is rationally distributed because its is compact-sized, and occupied area is small, and under uniform pressure damaed cordition,
Its ratio of heat transfer coefficient pipe heat exchanger is 3~5 times high, and is widely used.But it also has the following deficiencies place: due to board-like
Gap between the plate of heat exchanger is narrow, it is easy to because fouling results in blockage, not easy cleaning.
Utility model content
Purpose of utility model: the utility model makes improvement for the above-mentioned problems of the prior art, i.e., this is practical new
Type discloses a kind of self-stripping system for plate heat exchanger, and plate heat exchanger is temporarily isolated with heating system, from
After dynamic completion plate changes flushing, heating system is restored to operate normally automatically.
Technical solution: a kind of self-stripping system for plate heat exchanger, the external secondary water-supply of plate heat exchanger
Pipeline and a secondary water return pipeline, comprising:
First electric butterfly valve is laid on secondary water-supply pipeline；
First pressure transmitter is laid on the secondary water-supply pipeline between the first electric butterfly valve and plate heat exchanger；
Third electric butterfly valve is laid on secondary water return pipeline；
Second pressure transmitter is laid on the secondary water return pipeline between third electric butterfly valve and plate heat exchanger；
Water circulating pump is laid on the secondary water return pipeline between second pressure transmitter and third electric butterfly valve；
Automatic medicine adding apparatus, discharge port pass through pipe with the secondary water return pipeline for connecting water circulating pump and third electric butterfly valve
Road communicates, and is laid with electromagnetic relief valve on the pipeline；
Connecting pipe, one end are communicated with the secondary water-supply pipeline for connecting first pressure transmitter, the first electric butterfly valve, even
The other end threaded a pipe is communicated with the secondary water return pipeline for connecting automatic medicine adding apparatus, third electric butterfly valve, connecting pipe also
It is laid with the second electric butterfly valve；
Control cabinet, in be equipped with a programmable logic controller (PLC), the output end of the first/bis- pressure transmitter respectively with it is described
The input terminal of programmable logic controller (PLC) is connected, and the output end of the programmable logic controller (PLC) is electronic with the first/bis-/tri- respectively
The input terminal of butterfly valve, the input terminal of water circulating pump, the input terminal of electromagnetic relief valve are connected, for controlling the first/bis-/tri- electronic butterflies
The start and stop of valve, water circulating pump, electromagnetic relief valve.
Further, the model PM564-TETH-AX561 of the programmable logic controller (PLC).
The utility model has the advantages that a kind of self-stripping system for plate heat exchanger disclosed by the utility model is with beneficial below
Effect:
1, the flushing to plate heat exchanger can be realized automatically；
2, it can carry out in Heating Season, and time-consuming less, change in the case where having ensured heating system normal table board-like
Hot device is cleaned；
3, the flushing operation workload of plate heat exchanger is reduced.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the self-stripping system for plate heat exchanger disclosed by the utility model；
Wherein:
1- first pressure transmitter 2- second pressure transmitter
3- the first electric butterfly valve the second electric butterfly valve of 4-
5- third electric butterfly valve 6- water circulating pump
7- electromagnetic relief valve
10- secondary water-supply pipeline
Bis- water return pipelines of 20-
30- connecting pipe
Specific embodiment:
Specific embodiment of the present utility model is described in detail below.
As shown in Figure 1, a kind of self-stripping system for plate heat exchanger, the external secondary water-supply of plate heat exchanger
Pipeline 10 and a secondary water return pipeline 20, comprising:
First electric butterfly valve 3, is laid on secondary water-supply pipeline 10；
First pressure transmitter 1, the secondary water-supply pipeline 10 being laid between the first electric butterfly valve 3 and plate heat exchanger
On；
Third electric butterfly valve 5 is laid on secondary water return pipeline 20；
Second pressure transmitter 2, the secondary water return pipeline 20 being laid between third electric butterfly valve 5 and plate heat exchanger
On；
Water circulating pump 6 is laid on the secondary water return pipeline 20 between second pressure transmitter 2 and third electric butterfly valve 5；
Automatic medicine adding apparatus, discharge port are logical with the secondary water return pipeline 20 for connecting water circulating pump 6 and third electric butterfly valve 5
Piping communicates, and electromagnetic relief valve 7 is laid on the pipeline；
Connecting pipe 30, one end and the secondary water-supply pipeline 10 for connecting first pressure transmitter 1, the first electric butterfly valve 3
It communicating, the other end of connecting pipe 30 is communicated with the secondary water return pipeline 20 for connecting automatic medicine adding apparatus, third electric butterfly valve 5,
The second electric butterfly valve 4 is also laid in connecting pipe 30；
Control cabinet, in be equipped with a programmable logic controller (PLC), the output end of the first/bis- pressure transmitter 1/2 respectively with
The input terminal of the programmable logic controller (PLC) is connected, and the output end of the programmable logic controller (PLC) is respectively with the first/bis-/tri-
The input terminal of electric butterfly valve 3/4/5, the input terminal of water circulating pump 6, electromagnetic relief valve 7 input terminal be connected, for control first/
The start and stop of two/tri- electric butterfly valves 3/4/5, water circulating pump 6, electromagnetic relief valve 7.
Further, the model PM564-TETH-AX561 of the programmable logic controller (PLC).
Further, automatic medicine adding apparatus is automatic medicament feeding machine.
In use, a kind of process of self-stripping system for plate heat exchanger disclosed by the utility model is as follows:
(1) plate heat exchanger inlet outlet pressure differential is monitored in real time by first pressure transmitter 1, second pressure transmitter 2.
(2) the programmable logic controller (PLC) control when detecting plate heat exchanger inlet outlet pressure differential >=10 meter, in control cabinet
Water circulating pump 6 processed is slowly downconverted to 30Hz.Record plate heat exchanger inlet outlet pressure differential Δ P at this time1。
(3) programmable logic controller (PLC) in control cabinet, which first controls, opens the second electric butterfly valve 4, and the first electricity is closed in rear control
Dynamic butterfly valve 3, finally third electric butterfly valve 5 is closed in control.
(4) the PLC controls electromagnetic relief valve 7 in control cabinet is opened, pressure release to 0.2MPa.
(5) the PLC controls automatic control chemicals dosing plant in control cabinet starts, and adds in the secondary return pipe 20 of case
Enter irrigation (generally oxalic acid)；Additional amount can be set according to water capacity difference.
(6) after the completion of irrigation addition, heating system is run after twenty minutes, records plate heat exchanger inlet outlet pressure differential at this time
ΔP2。
(7) as Δ P1=Δ P2, system alarm is defaulted as heating system failure.As Δ P1> Δ P2When, heating system
It continues to run 20 minutes, records Δ P again3。
(8) with 20 minutes for the period, Δ P is carried out every time(n-1)With Δ PnIt compares, until Δ P(n-1)=Δ Pn。
(9) after rinsing, 6 frequency of PLC controls water circulating pump in control cabinet is adjusted to 0Hz, electromagnetism
7 pressure release of relief valve is to 0MPa.
(10) PLC controls in control cabinet open third electric butterfly valve 5, the first electric butterfly valve 3, close
The second electric butterfly valve 4 is closed, then water circulating pump 6 returns back to normal operation.Flushing terminates.
The embodiments of the present invention is elaborated above.But the utility model is not limited to above-mentioned implementation
Mode, technical field those of ordinary skill within the scope of knowledge, the utility model ancestor can also not departed from
It is made a variety of changes under the premise of purport.
Claims (2)
1. a kind of self-stripping system for plate heat exchanger, the external secondary water-supply pipeline of plate heat exchanger and one two
Secondary water return pipeline characterized by comprising
First electric butterfly valve is laid on secondary water-supply pipeline；
First pressure transmitter is laid on the secondary water-supply pipeline between the first electric butterfly valve and plate heat exchanger；
Third electric butterfly valve is laid on secondary water return pipeline；
Second pressure transmitter is laid on the secondary water return pipeline between third electric butterfly valve and plate heat exchanger；
Water circulating pump is laid on the secondary water return pipeline between second pressure transmitter and third electric butterfly valve；
Automatic medicine adding apparatus, discharge port pass through pipeline phase with the secondary water return pipeline for connecting water circulating pump and third electric butterfly valve
It is logical, electromagnetic relief valve is laid on the pipeline；
Connecting pipe, one end are communicated with the secondary water-supply pipeline for connecting first pressure transmitter, the first electric butterfly valve, communicating pipe
The other end in road is communicated with the secondary water return pipeline for connecting automatic medicine adding apparatus, third electric butterfly valve, is also laid in connecting pipe
There is the second electric butterfly valve；
Control cabinet, interior to be equipped with a programmable logic controller (PLC), the output end of the first/bis- pressure transmitter is compiled with described respectively
The input terminal of journey logic controller is connected, the output end of the programmable logic controller (PLC) respectively with the first/bis-/tri- electric butterfly valves
Input terminal, the input terminal of water circulating pump, electromagnetic relief valve input terminal be connected, for control the first/bis-/tri- electric butterfly valves,
The start and stop of water circulating pump, electromagnetic relief valve.
2. a kind of self-stripping system for plate heat exchanger according to claim 1, which is characterized in that described to compile
The model PM564-TETH-AX561 of journey logic controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822141876.4U CN209605656U (en) | 2018-12-20 | 2018-12-20 | A kind of self-stripping system for plate heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822141876.4U CN209605656U (en) | 2018-12-20 | 2018-12-20 | A kind of self-stripping system for plate heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209605656U true CN209605656U (en) | 2019-11-08 |
Family
ID=68397780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822141876.4U Active CN209605656U (en) | 2018-12-20 | 2018-12-20 | A kind of self-stripping system for plate heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209605656U (en) |
-
2018
- 2018-12-20 CN CN201822141876.4U patent/CN209605656U/en active Active
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