CN207394814U - A kind of boiler feedwater automatic preheating system - Google Patents
A kind of boiler feedwater automatic preheating system Download PDFInfo
- Publication number
- CN207394814U CN207394814U CN201721471644.4U CN201721471644U CN207394814U CN 207394814 U CN207394814 U CN 207394814U CN 201721471644 U CN201721471644 U CN 201721471644U CN 207394814 U CN207394814 U CN 207394814U
- Authority
- CN
- China
- Prior art keywords
- exhaust gas
- heat exchanger
- exchanger tube
- boiler feedwater
- tank
- 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.)
- Expired - Fee Related
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- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
A kind of boiler feedwater automatic preheating system including feed-tank, sets the first temperature sensor, the signal output part connection processing unit of the first temperature sensor in feed-tank；The heat exchanger tube of bottom opening is arranged with outside feed-tank；The bottom of feed-tank is connected with sealing plate, and the bottom of heat exchanger tube is attached on sealing plate；Sealing plate is equipped with connection bump, and the protrusion that is connected on heat exchanger tube is equipped with connecting groove, and the inner wall of connecting groove is equipped with sealing ring；Exhaust gas entrance and waste gas outlet are set on heat exchanger tube, exhaust piping is connected on exhaust gas entrance, exhaust piping front end connects exhaust gas buffer tank, and the first solenoid valve is set on exhaust piping, and processing unit output signal controls being turned on and off for the first solenoid valve.The utility model can realize the automatic heating of boiler feedwater, and it is convenient to realize, while the boiler feedwater heating in the system can utilize the exhaust gas of plant area, realize making full use of for thermal resource, reduce energy consumption, thereby reduce the cost of boiler feedwater heating.
Description
Technical field
The utility model belongs to boiler feedwater technical field more particularly to a kind of boiler feedwater automatic preheating system.
Background technology
Boiler is the common equipment of factory, in order to improve boiler using effect, it is necessary to carry out water temperature control to boiler feedwater,
Prevent that water temperature is too low.Existing boiler feedwater is directly heated usually using heating wire or PTC heating plates, can be expended substantial amounts of
Electric energy improves operating cost.For mode of heating, existing directly heat also has indirectly heat, and indirect heating manner once goes out
The problems such as existing leak is difficult to safeguard, later maintenance cost is higher.
Utility model content
The utility model is intended to provide a kind of boiler feedwater automatic preheating system simple in structure, using effect is good.
In order to solve the above technical problems, the utility model provides following technical solution：A kind of boiler feedwater is automatically pre-
Hot systems including feed-tank, set the first temperature sensor, the signal output part connection processing of the first temperature sensor in feed-tank
Unit；The heat exchanger tube of bottom opening is arranged with outside feed-tank；The bottom of feed-tank is connected with sealing plate, and the bottom of heat exchanger tube is sticked
In on sealing plate；Sealing plate is equipped with connection bump, and the protrusion that is connected on heat exchanger tube is equipped with connecting groove, connecting groove it is interior
Wall is equipped with sealing ring；Exhaust gas entrance and waste gas outlet are set on heat exchanger tube, exhaust piping, exhaust piping are connected on exhaust gas entrance
Front end connects exhaust gas buffer tank, and the first solenoid valve is set on exhaust piping, and processing unit output signal controls opening for the first solenoid valve
It opens or closes.
Horizontally disposed contact plate is set on the inner wall of heat exchanger tube, electronic the pushing away of contact plate setting is provided on sealing plate
Bar, electric pushrod end are bonded with contact plate.
Helicla flute is equipped on heat exchanger tube inner wall from top to bottom.
Exhaust gas access tube and the exhaust emission tube connected with exhaust piping are connected on exhaust gas buffer tank.
Safety valve is equipped on exhaust gas buffer tank and heat exchanger tube.
The box outer wall that feeds water is equipped with insulating layer.
Recovery tube is connected on waste gas outlet.
Second temperature sensor, the signal of the signal output part connection processing unit of second temperature sensor are set in recovery tube
Input terminal, recovery tube front end are equipped with first pipe and second pipe, first pipe exhaust gas buffer tank, first pipe and second pipe
On be respectively equipped with second solenoid valve and the 3rd solenoid valve, processing unit exports signal control second solenoid valve and the 3rd electromagnetism respectively
Valve is turned on and off.
By above technical scheme, the beneficial effects of the utility model are：The utility model can realize boiler feedwater
Automatic heating, it is convenient to realize, while the boiler feedwater heating in the system can utilize the exhaust gas of plant area, realize filling for thermal resource
Divide and utilize, reduce energy consumption, thereby reduce the cost of boiler feedwater heating.
Description of the drawings
Fig. 1 is the utility model structure diagram；
Fig. 2 is the utility model principle block diagram.
Specific embodiment
A kind of boiler feedwater automatic preheating system, as depicted in figs. 1 and 2, including feed-tank 16, feed-tank 16 be equipped with into
Water pipe 7 and outlet pipe 8, water is passed through by water inlet pipe 7 into feed-tank 16, is passed through the water in feed-tank 16 by outlet pipe 8
Into boiler.
16 outer wall of feed-tank is equipped with insulating layer, so as to fulfill the heat preservation of the water in feed-tank 16.It is set in feed-tank 16
First temperature sensor, the signal output part connection processing unit of the first temperature sensor；Water in feed-tank 16 is passed directly into
Into boiler, the first temperature sensor can be detected the water temperature in feed-tank 16, ensure the water being sent in boiler
Water temperature is in steady state.
The heat exchanger tube 6 of bottom opening is arranged with outside feed-tank 16, helicla flute is equipped with from top to bottom on 6 inner wall of heat exchanger tube
19, so as to increase the contact area of heat exchanger tube 6 and exhaust gas.Gap is reserved between 16 outer wall of heat exchanger tube 6 and feed-tank, the gap
For being passed through hot gas, so as to be heated to the water in feed-tank 16.
Exhaust gas entrance and waste gas outlet are set on heat exchanger tube 6, recovery tube 9 is connected on waste gas outlet.Is set in recovery tube 9
Two temperature sensors, the signal input part of the signal output part connection processing unit of second temperature sensor, 9 front end of recovery tube is set
There are first pipe 10 and second pipe 11,10 exhaust gas buffer tank 1 of first pipe, second pipe 11 directly empties；First pipe 10
Be respectively equipped with 13 and the 3rd solenoid valve 12 of second solenoid valve on second pipe 11, processing unit exports signal control second respectively
13 and the 3rd solenoid valve 12 of solenoid valve is turned on and off.Exhaust gas by heat exchange in heat exchanger tube 6 comes out from waste gas outlet, into
Enter to recovery tube 9, the temperature of exhaust gas in the second temperature sensor moment detection recovery tube 9 in recovery tube 9, when temperature is higher
When, processing unit output signal controls the second solenoid valve 13 in first pipe 10 to open, so that exhaust gas is re-introduced into
Exhaust gas buffer tank 1 is reused, when the temperature in recovery tube 9 is low, processing unit output signal control second pipe 11
On the 3rd solenoid valve 12 open, to exhaust gas evacuation.
It is connected with exhaust piping 4 on exhaust gas entrance, 4 front end of exhaust piping connection exhaust gas buffer tank 1, in exhaust gas buffer tank 1
It is cached with exhaust gas, the exhaust gas in exhaust gas buffer tank 1 is entered by exhaust piping 4 in heat exchanger tube 6.It is connected on exhaust gas buffer tank 1
There are exhaust gas access tube 2 and the exhaust emission tube 3 connected with exhaust piping 4.So as to which exhaust gas enters exhaust gas by exhaust gas access tube 2
In buffer tank 1, exhaust piping 4 is entered by exhaust emission tube 3 from the interior exhaust gas out of exhaust gas buffer tank 1, then passes through exhaust gas
Pipeline 4 is entered in heat exchanger tube 6.
In order to avoid hypertonia in heat exchanger tube 6 and exhaust gas buffer tank 1, it is equipped on exhaust gas buffer tank 1 and heat exchanger tube 6
Safety valve ensures production safety.
In order to realize that exhaust gas enters automatically controlling in heat exchanger tube 6, the first solenoid valve 5 is set on exhaust piping 4, is handled
Element output signal controls being turned on and off for the first solenoid valve 5.
In the bottom of feed-tank 16, there are two horizontally disposed sealing plate 14, the bottom of heat exchanger tube 6 is attached at sealing for connection
On plate 14, two sealing plates 14 are symmetrical arranged compared with heat exchanger tube 6；The length of sealing plate 14 is less than the radius of heat exchanger tube 6.
Connection bump 15 is equipped on sealing plate 14, the protrusion 15 that is connected on heat exchanger tube 6 is equipped with connecting groove, and connection is recessed
The inner wall of slot is equipped with sealing ring.The mating connection of heat exchanger tube 6 and sealing plate 14 is realized by connection bump 15 and connecting groove,
The sealing ring of setting can improve the leakproofness of the two junction.
In order to realize the automatic lifting of heat exchanger tube 6, horizontally disposed contact plate 17 is set on the inner wall of heat exchanger tube 6, is sealed
The electric pushrod 18 of the setting of contact plate 17 is provided on plate 14,18 end of electric pushrod is bonded with contact plate 17.Work when
It waits, electric pushrod 18 extends, so as to by 6 upward lifting of heat exchanger tube.After heat exchanger tube 6 is raised to certain altitude, by heat exchanger tube 6
It removes, realizes the maintenance of heat exchanger tube 6 or feed-tank 16.
The course of work is：The water temperature in the first temperature sensor moment detection feed-tank 16 in feed-tank 16, and will inspection
The water temperature signal measured is transferred to processing unit, and the signal received is compared processing unit with the threshold value set, works as water
When temperature is less than threshold value, processing unit output signal controls the first solenoid valve 5 to open, and the exhaust gas in exhaust gas buffer tank 1, which enters, to be changed
In hot cylinder 6, exchange heat with the water in feed-tank 16.Exhaust gas by heat exchange enters recovery tube 9, and second in recovery tube 9
The temperature sensor moment detects exhaust gas temperature, and the temperature signal detected is transferred to processing unit, and processing unit will receive
To signal with set threshold value be compared, when the temperature is above the threshold value, processing unit output signal control second solenoid valve
13 open, thus by the waste gas recovery in recovery tube 9 into exhaust gas buffer tank 1；When exhaust gas temperature is less than threshold value, processing unit
Output signal controls the 3rd solenoid valve 12 to open so that exhaust gas evacuation.Realization method is：Processing unit includes microcontroller and the
First, second, third relay drive circuit, the signal input part of microcontroller connect the first temperature sensor（Model
DS18B20）And second temperature sensor（Model DS18B20）Signal output part, microcontroller 3 signal output parts connection
First, second, third relay drive circuit, first, second, third relay drive circuit respectively drive the first solenoid valve 5,
The work of 13 and the 3rd solenoid valve 12 of second solenoid valve.First, second, third relay drive circuit respectively drives the first electromagnetism
The work of valve 5,13 and the 3rd solenoid valve 12 of second solenoid valve is the ripe prior art.
When use, when needing heat exchanging cylinder 6 or feed-tank 16 is safeguarded, start electric pushrod 18, it is electronic to push away
Bar 18 promotes heat exchanger tube 6 to ramp up.
The utility model can realize the automatic heating of boiler feedwater, and it is convenient to realize, while the boiler feedwater in the system
Heating can utilize the exhaust gas of plant area, realize making full use of for thermal resource, reduce energy consumption, thereby reduce boiler feedwater and add
The cost of heat.
Claims (8)
1. a kind of boiler feedwater automatic preheating system, it is characterised in that：Including feed-tank, the first temperature sensing is set in feed-tank
Device, the signal output part connection processing unit of the first temperature sensor；The heat exchanger tube of bottom opening is arranged with outside feed-tank；Feedwater
The bottom of case is connected with sealing plate, and the bottom of heat exchanger tube is attached on sealing plate；Sealing plate is equipped with connection bump, on heat exchanger tube
The protrusion that is connected is equipped with connecting groove, and the inner wall of connecting groove is equipped with sealing ring；Exhaust gas entrance and exhaust gas are set on heat exchanger tube
It exports, exhaust piping is connected on exhaust gas entrance, exhaust piping front end connects exhaust gas buffer tank, the first electromagnetism is set on exhaust piping
Valve, processing unit output signal control being turned on and off for the first solenoid valve.
2. boiler feedwater automatic preheating system as described in claim 1, it is characterised in that：Level is set on the inner wall of heat exchanger tube to set
The contact plate put is provided with the electric pushrod of contact plate setting on sealing plate, and electric pushrod end is bonded with contact plate.
3. boiler feedwater automatic preheating system as claimed in claim 2, it is characterised in that：It is set from top to bottom on heat exchanger tube inner wall
There is helicla flute.
4. boiler feedwater automatic preheating system as claimed in claim 3, it is characterised in that：Exhaust gas is connected on exhaust gas buffer tank
Access tube and the exhaust emission tube connected with exhaust piping.
5. boiler feedwater automatic preheating system as claimed in claim 4, it is characterised in that：On exhaust gas buffer tank and heat exchanger tube
Equipped with safety valve.
6. boiler feedwater automatic preheating system as claimed in claim 5, it is characterised in that：The box outer wall that feeds water is equipped with heat preservation
Layer.
7. boiler feedwater automatic preheating system as claimed in claim 6, it is characterised in that：Recycling is connected on waste gas outlet
Pipe.
8. the boiler feedwater automatic preheating system as described in claim 1 to 7 any one, it is characterised in that：It is set in recovery tube
Second temperature sensor, the signal input part of the signal output part connection processing unit of second temperature sensor, recovery tube front end
Equipped with first pipe and second pipe, first pipe exhaust gas buffer tank is respectively equipped with the second electricity in first pipe and second pipe
Magnet valve and the 3rd solenoid valve, processing unit exports signal control second solenoid valve respectively and the 3rd solenoid valve is turned on and off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721471644.4U CN207394814U (en) | 2017-11-07 | 2017-11-07 | A kind of boiler feedwater automatic preheating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721471644.4U CN207394814U (en) | 2017-11-07 | 2017-11-07 | A kind of boiler feedwater automatic preheating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207394814U true CN207394814U (en) | 2018-05-22 |
Family
ID=62325244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721471644.4U Expired - Fee Related CN207394814U (en) | 2017-11-07 | 2017-11-07 | A kind of boiler feedwater automatic preheating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207394814U (en) |
-
2017
- 2017-11-07 CN CN201721471644.4U patent/CN207394814U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20180522 Termination date: 20181107 |