CN208253946U - A kind of hot water boiler system for space division standby heat supply - Google Patents
A kind of hot water boiler system for space division standby heat supply Download PDFInfo
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- CN208253946U CN208253946U CN201820726182.4U CN201820726182U CN208253946U CN 208253946 U CN208253946 U CN 208253946U CN 201820726182 U CN201820726182 U CN 201820726182U CN 208253946 U CN208253946 U CN 208253946U
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Abstract
The utility model discloses a kind of hot water boiler systems for space division standby heat supply, comprising: 3 normal-pressure hot-water boilers, 2 frequency conversion water circulating pumps, 1 vaporizer, 1 cyclic water tank and 1 set of water replanishing device.Wherein 1 arcola and 1 water circulating pump long-term work, system is set to be chronically at the hot standby standby mode of normal operation, lead to the system accumulation of heat requirement of thermic load suddenly change to adapt to cryogenic liquid into vaporizer, thus reliable steady supply gas at normal temperature during ensureing 2 cauldron startings.The system is evenly distributed using the varying duty regulation technology of boiler and the frequency conversion control technique of pump motor, thermal cycle for loop temperature, provides the heat supply scheme of economical rationality for the uninterrupted tight gas supply of air separation unit.
Description
Technical field
The utility model relates to normal-pressure hot-water boiler heat supply process fields, and in particular to a kind of for space division standby heat supply
Hot water boiler system is particularly suitable for the air separation unit back-up system uninterruptedly supplied for downstream unit.
Background technique
Air separation unit provides a large amount of oxygen, nitrogen and rare gas, the gas supply stability of air separation unit for downstream production
Directly affect the safe and reliable operation of related device of air.The hang-up of air separation unit, it will cutting downstream project gas at once
The supply of body gently then will lead to the parking of downstream process device and stop production, causes huge economic loss, work that is heavy then will lead to downstream
Process and equipment loses security gas, causes the damage of machinery equipment.
In order to guarantee the stability of downstream gas, establishing a set of high degree of automation and respond rapid back-up system very
It is necessary.Back-up system can uninterruptedly supply within space division master device accident phase or turn(a)round, guarantee agent set in the meantime
Interior debugging continues to supply, or provides the abundant safety of device for downstream and stop production down time.
Currently, the back-up system of air separation unit is all that will give downstream gas after the liquid gasification in storage tank by vaporizer
Device, the heat supply of vaporizer mainly include steam supply heating, electric heating or empty bathroom heating.Electric heating carburetor is easy by filling
It sets power-off and leads to not that complicated for operation and hot standby consumption is high using, steam heating vaporizer, air vaporizer is by external environment
It influences big.
Utility model content
For the above-mentioned problems in the prior art, the purpose of this utility model is to provide one kind to be used for space division standby
The hot water boiler system of heat supply, using the size type of furnace collocation of hot water boiler system and water circulating pump frequency conversion control technique, for sky
The uninterrupted heat supply of separating device back-up system is realized with solving the problems, such as to be ready to come into operation under space division back-up system standby mode
The smooth transition of air separation unit handoff procedure, downstream steady reliable output products gas.
A kind of hot water boiler system for space division standby heat supply, it is characterised in that including hot-water boiler A, hot water
Boiler B, hot-water boiler C, vaporizer, water circulating pump A, water circulating pump B, water pump control cabinet, water replanishing device and expansion tank, hot water
Boiler A, hot-water boiler B and hot-water boiler C are connected in parallel, and water circulating pump A and water circulating pump B are connect with water pump control cabinet；Circulation
Water pump A and water circulating pump B are connected in parallel；Water outlet at the top of the water inlet connection vaporizer of three hot-water boilers, three hot water
It is all provided on boiler there are two water outlet, the water inlet of the first connection expansion tank, another way connects water circulating pump water inlet, circulation
The water inlet of the water outlet connection vaporizer bottom of water pump, vaporizer top are equipped with cryogenic liquid import, and lower part is equipped with room temperature gas
Body outlet, cryogenic liquid enters vaporizer, defeated after cryogenic liquid to gas at normal temperature in hot-water boiler under the ringing of hot water
Out.
A kind of hot water boiler system for space division standby heat supply, it is characterised in that expansion tank is equipped with moisturizing
Device.
A kind of hot water boiler system for space division standby heat supply, it is characterised in that the connection between neighbouring device
Control valve is respectively equipped on pipeline.
A kind of hot water boiler system for space division standby heat supply, it is characterised in that vaporizer is water-bath type vaporization
Device.
A kind of hot water boiler system for space division standby heat supply, it is characterised in that vaporizer, hot-water boiler A,
It is respectively equipped with temperature sensor on hot-water boiler B and hot-water boiler C, and temperature sensor is connect with water pump control cabinet.
A kind of hot water boiler system for space division standby heat supply, it is characterised in that the elevation of bottom of expansion tank
Highest point than system pipeline is at least higher by 1.5m.
A kind of hot water boiler system for space division standby heat supply, it is characterised in that water circulating pump A or recirculated water
Pump B is connect with variable-frequency motor, is adjusted its revolving speed by variable-frequency motor, is guaranteed entire heat circulating system for water return pipeline Temperature Distribution
Uniformly.
A kind of hot water boiler system for space division standby heat supply, it is characterised in that system be chronically at it is hot standby to
When machine state, hot-water boiler A and hot-water boiler B are closed, and small size hot-water boiler C is in running order, the heat outputting of hot-water boiler C
Load is matched with the leaving water temperature of vaporizer, stablizes system in the temperature for meeting regenerative capacity requirement.
By using above-mentioned technology, compared with prior art, the beneficial effects of the utility model are as follows:
A kind of hot water boiler system for space division standby heat supply provided by the utility model, using the varying duty tune of boiler
The frequency conversion control technique of section technology and pump motor is the uninterrupted heat supply of air separation unit back-up system, and thermal cycle is for circuit temperature
Degree is evenly distributed, if main air separation unit involuntary stoppage, back-up system can respond at once and reach Design cooling load, to solve space division
It is ready to the problem to come into operation under back-up system standby mode, realizes the smooth transition of air separation unit handoff procedure, downstream puts down
Steady reliable output products gas, provides the heat supply scheme of economical rationality for the uninterrupted tight gas supply of air separation unit.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
In figure: 1- hot-water boiler A, 2- hot-water boiler B, 3- hot-water boiler C, 4- vaporizer, 41- cryogenic liquid import, 42-
Gas at normal temperature outlet, 5- water circulating pump A, 6- water circulating pump B, 7- water pump control cabinet, 8- water replanishing device, 9- expansion tank.
Specific embodiment
The preferred embodiment of the utility model is described in detail with reference to the accompanying drawings of the specification, so that the utility model
The advantages of and feature can be easier to be readily appreciated by one skilled in the art, to be made to the protection scope of the utility model more clear
Chu explicitly defines.
As shown in Figure 1, a kind of hot water boiler system for space division standby heat supply of the utility model, including hot-water boiler
A1, hot-water boiler B2, hot-water boiler C3, vaporizer 4, water circulating pump A5, water circulating pump B6, water pump control cabinet 7, water replanishing device 8
And expansion tank 9, hot-water boiler A1, hot-water boiler B2 and hot-water boiler C3 are connected in parallel, water circulating pump A5 and water circulating pump B6
It is connect with water pump control cabinet 7；Water circulating pump A5 and water circulating pump B6 are connected in parallel；The water inlet of three hot-water boilers connects vaporization
The water outlet at the top of device 4 is all provided with there are two water outlet, the water inlet of the first connection expansion tank 9 on three hot-water boilers, another
Road connects water circulating pump water inlet, and the water inlet of water outlet connection 4 bottom of vaporizer of water circulating pump, 4 top of vaporizer is equipped with
Cryogenic liquid import 41, lower part are equipped with gas at normal temperature outlet 42, and cryogenic liquid enters vaporizer 4, the hot water in hot-water boiler
It under ringing, is exported after cryogenic liquid to gas at normal temperature, is respectively equipped with control valve on the connecting line between neighbouring device.
For the ease of supplying water in time, the utility model is equipped with water replanishing device 8 on expansion tank 9；Vaporizer 4 is used for low
Geothermal liquid gasification, obtain gas at normal temperature, the vaporizer 4 in the utility model embodiment be water bath type vaporizer, and vaporizer 4,
Temperature sensor is respectively equipped on hot-water boiler A1, hot-water boiler B2 and hot-water boiler C3, and temperature sensor and water pump control
Cabinet 7 connects.
The elevation of bottom of the expansion tank 9 is at least higher by 1.5m than the highest point of system pipeline.
The water circulating pump A5 or water circulating pump B6 are connect with variable-frequency motor, pass through variable-frequency motor tune by water pump control cabinet 7
Water circulating pump A5 or water circulating pump B6 revolving speed are saved, guarantees entire heat circulating system for water return pipeline uniformity of temperature profile.
As shown, hot-water boiler A1 and hot-water boiler B2 are closed, small-sized when system is chronically at hot standby standby mode
Hot-water boiler C3 is in running order, and the output thermic load of hot-water boiler C3 is adjusted according to the leaving water temperature of vaporizer 4, makes boiler
The stable heat loss that in the temperature for meeting handoff procedure water capacity requirement, which is gasified by cryogenic liquid of system, system buffer
The starting time match of water capacity and two big hot-water boiler is calculated, meet hot-water boiler starting during cryogenic liquid into
Enter the heat loss demand of the gasification of vaporizer 4, ensures incessantly steadily output gas at normal temperature；
Under system hot standby standby mode, water circulating pump A5 or water circulating pump B6 make its fortune by the adjusting of corresponding variable-frequency motor
Row guarantees entire heat circulating system for water return pipeline uniformity of temperature profile compared with the slow-speed of revolution, meets safe and reliable and economical and efficient
Design concept.
After cryogenic liquid enters vaporizer 4 (when hot water boiler system works normally), water pump control cabinet 7, which receives, to be come
The low-temperature signal detected from the temperature sensor of 4 top exit of space division fault initiating signal or vaporizer, water pump control cabinet 7 are given
Water circulating pump A5 or water circulating pump B6 are responded rapidly to, and the water circulating pump A5 or water circulating pump B6 speedup for receiving instruction turn to normal
Speed, hot water used in system internal circulating load are enlarged to nominal flow rate；After water pump A5 or water circulating pump B6 speedup to rated speed to be recycled, hot water
Boiler A1 and hot-water boiler B2 starts ignition procedure and (hot-water boiler A1 and hot-water boiler B2 while lighting a fire herein, farthest
Guarantee on startup, heat supply carries out), and oepration at full load operating condition is loaded by small fire, it is loaded into oepration at full load operating condition
Later, hot-water boiler A1 and hot-water boiler B2 one therein is closed, while hot-water boiler C3 is also switched off；
When hot-water boiler A1 and hot-water boiler B2 receive the temperature sensing of 4 top exit of space division enabling signal or vaporizer
When the high temperature signal that device detects, system first closes the hot-water boiler A1 or hot-water boiler B2 to work, then adjusts recirculated water
A5 or water circulating pump B6 is pumped to the slow-speed of revolution, while starting small size hot-water boiler C3, hot water boiler system rerun it is hot standby to
Machine state, while starting small size hot-water boiler C3, hot water boiler system is reruned in hot standby standby mode.
The boiler of the utility model needs periodical blowdown, and blowdown flow rate should ensure that effluent quality meets the requirements, and mends from water replanishing device 8
The flow of water into expansion tank 9 is determined according to blowdown flow rate.Expansion tank 9 plays the role of level pressure, and elevation of bottom at least compares system pipes
The highest point in road is higher by 1.5m, and volume depends in boiler system accommodating the swell increment of water.
The beneficial effects of the utility model are:
It is provided by the utility model that a kind of hot water boiler system for space division standby heat supply is provided, it is negative using the change of boiler
The frequency conversion control technique of lotus regulation technology and pump motor, thermal cycle are evenly distributed for loop temperature, and main air separation unit surprisingly stops
Vehicle, back-up system respond and reach Design cooling load at once, provide the heat supply of economical rationality for the uninterrupted tight gas supply of air separation unit
Scheme.
Embodiment 1 is with the 30000Nm that gasifies3For/h low temperature liquid nitrogen, a kind of heat for space division standby heat supply is specifically illustrated
The principle of homogeneous solution-type reactor system flow technique.
Technique is required 30000Nm3/ h liquid nitrogen is heated into 20 DEG C from -196 DEG C and is supplied to downstream unit, and design heating load is
4.75MW selects two 5.6MW normal-pressure hot-water boilers, the using and the reserved.Hot-water boiler normally starts to the output Design cooling load time
It is 5 minutes, 4 water capacity of vaporizer is 6m3, water capacity of the boiler 6m3, it is computed that (hot water temperature=cryogenic gas starting time heat disappears
Consumption/(water capacity × water specific heat capacity)+heat exchange Minimum requirements water temperature=(5600000W × 300S)/(12000kg × 4200J/kg DEG C)
+ 45 DEG C=78.3 DEG C), downstream gas supply, the set water temperature of the hot standby standby mode of boiler system are not influenced at least 5 minutes to reach
It is 80 DEG C.
In design point, boiler inlet and outlet water temperature is 65 DEG C/90 DEG C, and (90 DEG C of boiler export are vaporizer for boiler operatiopn
Import, 65 DEG C of vaporizer outlets are boiler inlet), the nominal cycle water flow of water circulating pump is 192m3/ h(nominal cycle water
Amount=rated heat input, rated heat load/inlet and outlet water temperature=5600000*3.6/25/4200 m3/h=192 m3/ h).
When the system hot standby of the utility model is standby, miniature boiler C3 does electricity by 4 exit water temperature of vaporizer according to industrial personal computer
Sub- proportion adjustment provides effective load control system to thermic load output according to 4 top exit water temperature of vaporizer, ties up system water temperature
It holds at 80 DEG C.Water circulating pump A5 or water circulating pump B6 is operated in by variable frequency adjustment under 50% rated speed, system circulation water flow
Amount reaches 95m3/h.The equipment and pipe insulation thermal insulation property phase of the work thermic load of miniature boiler C3 and hot water boiler system
It closes, is equal to total heat dissipation consumption that boiler system water temperature maintains 80 DEG C, about 0.35MW.
After receiving from the temperature sensor low-temperature signal of 4 top exit of space division fault-signal or vaporizer, water pump
Control cabinet 7 control loop water pump A5 or water circulating pump B6 is responded rapidly to, and water pump speedup to rated speed, hot water used in system internal circulating load adds
Greatly to metered flow 192m3/h.After water pump A5 or water circulating pump B6 speedup to rated speed to be recycled, hot-water boiler A1 and hot water
Boiler B2 opens ignition procedure simultaneously, is loaded into design conditions by small fire within boiler 5 minutes or so.After two boiler startups,
Wherein a hot-water boiler and small size hot-water boiler C3 are closed in selection, and boiler system continuous service is in flow 192m3/ h inlet and outlet
The stable state that water temperature is 90 DEG C/65 DEG C.
When receiving the temperature sensor high temperature signal from 4 top exit of space division enabling signal or vaporizer, system is first
The hot-water boiler A1 or hot-water boiler B2 that are working are closed, then adjusts water circulating pump A5 or water circulating pump B6 to the slow-speed of revolution, together
Shi Qidong small size hot-water boiler C3, hot water boiler system smooth transition to hot standby standby mode.
The above description is only the embodiments of the present invention, and therefore it does not limit the scope of the patent of the utility model, all
Equivalent structure or equivalent flow shift made based on the specification and figures of the utility model, is applied directly or indirectly in
Other related technical areas are also included in the patent protection scope of the utility model.
Claims (7)
1. a kind of hot water boiler system for space division standby heat supply, it is characterised in that including hot-water boiler A(1), hot-water boiler B
(2), hot-water boiler C(3), vaporizer (4), water circulating pump A(5), water circulating pump B(6), water pump control cabinet (7), water replanishing device
(8) and expansion tank (9), hot-water boiler A(1), hot-water boiler B(2) and hot-water boiler C(3) be connected in parallel, water circulating pump A(5)
It is connect with water circulating pump B(6) with water pump control cabinet (7)；Water circulating pump A(5) and water circulating pump B(6) be connected in parallel；Three hot water
Water outlet at the top of water inlet connection vaporizer (4) of boiler, is all provided with that there are two water outlet, the first connections on three hot-water boilers
The water inlet of expansion tank (9), another way connect water circulating pump water inlet, and the water outlet of water circulating pump connects vaporizer (4) bottom
The water inlet in portion, vaporizer (4) top are equipped with cryogenic liquid import (41), and lower part is equipped with gas at normal temperature outlet (42), Low Temperature Liquid
Body enters vaporizer (4) and exports after cryogenic liquid to gas at normal temperature in hot-water boiler under the ringing of hot water.
2. a kind of hot water boiler system for space division standby heat supply according to claim 1, it is characterised in that swelling water
Case (9) is equipped with water replanishing device (8).
3. a kind of hot water boiler system for space division standby heat supply according to claim 1, it is characterised in that adjacent to set
Control valve is respectively equipped on connecting line between standby.
4. a kind of hot water boiler system for space division standby heat supply according to claim 1 to 3, it is characterised in that
Vaporizer (4) is water bath type vaporizer.
5. a kind of hot water boiler system for space division standby heat supply according to claim 1 to 3, it is characterised in that
Vaporizer (4), hot-water boiler A(1), hot-water boiler B(2) and hot-water boiler C(3) on be respectively equipped with temperature sensor, and temperature
Sensor is connect with water pump control cabinet (7).
6. a kind of hot water boiler system for space division standby heat supply according to claim 1 to 3, it is characterised in that
The elevation of bottom of expansion tank (9) is at least higher by 1.5m than the highest point of system pipeline.
7. a kind of hot water boiler system for space division standby heat supply according to claim 1 to 3, it is characterised in that
Water circulating pump A(5) or water circulating pump B(6) connect with variable-frequency motor, its revolving speed is adjusted by variable-frequency motor, guarantees that entire heat is followed
Loop system is for water return pipeline uniformity of temperature profile.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820726182.4U CN208253946U (en) | 2018-05-16 | 2018-05-16 | A kind of hot water boiler system for space division standby heat supply |
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| CN201820726182.4U CN208253946U (en) | 2018-05-16 | 2018-05-16 | A kind of hot water boiler system for space division standby heat supply |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108645015A (en) * | 2018-05-16 | 2018-10-12 | 杭州杭氧化医工程有限公司 | A kind of hot water boiler system for space division standby heat supply |
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2018
- 2018-05-16 CN CN201820726182.4U patent/CN208253946U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108645015A (en) * | 2018-05-16 | 2018-10-12 | 杭州杭氧化医工程有限公司 | A kind of hot water boiler system for space division standby heat supply |
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