CN100580316C - Continuous full-automatic enclosed recovery system for high temperature condensate water - Google Patents
Continuous full-automatic enclosed recovery system for high temperature condensate water Download PDFInfo
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- CN100580316C CN100580316C CN200710116048A CN200710116048A CN100580316C CN 100580316 C CN100580316 C CN 100580316C CN 200710116048 A CN200710116048 A CN 200710116048A CN 200710116048 A CN200710116048 A CN 200710116048A CN 100580316 C CN100580316 C CN 100580316C
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Abstract
The application discloses a continuous full-automatic enclosed recover system of high temperature condensed water, which relates to a steam boiler. The invention comprises a big tank and a small tank with equal diameter but different heights; the big tank is two times high as the small one; the diameter of a condensation water raising pipe of the big tank is lager than that of condensation water inlet pipe of big tank; the big tank is provided with an air pipe at top; the small tank is connected with a pressure transmitter with upper section and both upper and lower sections of the small tank are connected with a differential pressure transmitter; a forcing vapor pipe, an electromagnetic valve and an exhaust pressure release pipe are arranged at top of the small tank; a self-force pressure adjusting valve is positioned on the forcing vapor pipe; the signal wire of the differential pressure transmitter and the pressure transmitter, the control wire of the electromagnetic valve and the power supply wire of a centrifugal pump are all connected to an electric control cabinet; an accident drain valve is arranged at bottom of both tanks. By adopting new pressure increasing principle, the application greatly improves the anti cavitation capacity of pump and is characterized by strong operating condition adaptability, reliable operation and low system investment and operating fee, etc.
Description
Technical field
The application relates to steam boiler.Relate in particular to the high-temperature condensation water recovery system of steam boiler.
Background technology
At present, in industries such as thermoelectricity, beer, rubber, weaving, tobacco, timber processing, process steam produces a large amount of high-temperature condensation waters.These high-temperature condensation water water quality good (calcium ions and magnesium ions and oxygen content are very low), and heat content height (near saturated mode, when steam trap vapor barrier property energy was relatively poor, temperature was up to 120 ℃) are suitable for directly carrying back boiler steam room recycling.For reaching recycling purpose, water tank and water-in and water-out pipeline generally all are installed, be transported to the boiler room with centrifugal pump.But in course of conveying, centrifugal water pump tends to take place cavitation (water is in phenomenons such as water pump suction casing vaporizations for water pump vane damage, water pump strenuous vibration and idle running), thereby causes a large amount of high-temperature condensation waters can't carry the back boiler room.Caused the huge waste of the water resource and the energy thus.
For preventing the centrifugal water pump cavitation, the domestic existing high-temperature condensation water enclosed recovery system that puts into operation, this system sets up an ejector again before centrifugal pump, realize airtight recovery by the injection supercharging, reach the purpose of smooth delivery of power and minimizing energy loss, but there is the problem of following several respects in system's operation:
1, this system's ejector degree of boost is little, the system condition bad adaptability, and when coolant-temperature gage changed with fixed attention, still there was cavitation phenomenons in centrifugal water pump.
2, because this system has 50% water pump water outlet to turn back in the injector as the working media of injector approximately, so have only 50% condensed water to carry back boiler, the usefulness of waste water pump 50%.
3, because this system requirements uses little steam trap and the good centrifugal water pump of anti-cavitation performance of steam leakage, select external product mostly for use, price is expensive, so system's investment is big.
Summary of the invention
The application's purpose is the deficiency that overcomes above-mentioned condensed water recovery technology, and it is few to propose a kind of energy loss, and adaptability for working condition is strong, and system's investment and operating cost are low, the high-temperature condensation water recovery system that system's operating automation degree and reliability are high.
For achieving the above object, the application's system mainly is made up of water tank, centrifugal water pump and switch board, it is characterized in that: big jar and canister that water tank is equal diameters, highly do not wait, and big jar height is the twice of canister; Be equipped with condensate water water inlet pipe and condensate water outlet pipe on big jar and the canister, the condensate water outlet pipe on the big jar is than the big model of caliber of the condensate water water inlet pipe on the big jar; Condensate water water inlet pipe on the canister is identical with the caliber of condensate water outlet pipe on big jar and be connected by check-valves; On the big tank deck air hose is set, constant to guarantee jar internal pressure; The air space on canister top links to each other with pressure transmitter by pressure guiding pipe, to measure the pressure signal in the canister; The air space on canister top links to each other with differential pressure transmitter by pressure guiding pipe with the hydrospace of bottom, to measure the water level signal in the canister; On the top of canister, also be provided with steam under pressure pipe, magnetic valve, exhaust pressure relief pipe and magnetic valve, on the steam under pressure pipe, also be provided with self-contained pressure regulator; The power line of the holding wire of differential pressure transmitter and pressure transmitter, the control line of magnetic valve and centrifugal water pump all is connected to electrical control cashier's office in a shop.In addition, all be provided with the accident drain valve in the bottom of big jar and canister.
In order to reduce steam consumption quantity, one convection current thermal insulation board is set in canister, the convection current thermal insulation board is made by LLDPE (LLDPE) nonwoven, thickness is 5 centimetres, diameter is than the little 4-6 of canister internal diameter centimetre, float over the water surface that condenses,, thereby reduce steam consumption quantity with the contact area of minimizing steam and condensed water.
The application's workflow is:
The condensate water that production system produces continuously flows in big jar, and then flows into canister by big jar, by differential pressure transmitter and the pressure transmitter that is provided with on the canister, the water level signal and the pressure signal of canister is sent to electrical control cabinet.
When high water level that liquid level water level in the canister arrive to be set, send control signal by electrical control cabinet, close the magnetic valve on the exhaust pressure relief pipe of canister, open the magnetic valve on the steam under pressure pipeline of canister simultaneously.Steam is added in the canister by the steam under pressure pipeline.
Steam pressure increases gradually in the canister, and the downstream pressure of the check-valves between large and small two jars raises gradually.When the downstream pressure of this check-valves is a bit larger tham upstream pressure, closure of check ring.At this moment, the condensate water that production system produces still can continuously flow into big jar, guaranteed that production is unaffected, and the pressure in the canister increases constantly still.
(this setting value sets value consistent with the downstream pressure of self-contained pressure regulator on being arranged on the steam under pressure pipeline when the canister internal pressure reaches a certain when setting value, can guarantee that centrifugal water pump moves under this pressure does not cavitate), pressure transmitter sends pressure signal to electrical control cabinet, send control instruction by electrical control cabinet, start centrifugal water pump, carry condensed water.Because the regulating action of self-contained pressure regulator is carried in the process of condensed water at centrifugal water pump, the canister internal pressure maintains near this setting value all the time.
When the condensation water level in the canister dropped to the low water level of setting, electrical control cabinet sent control instruction, made centrifugal water pump out of service; Simultaneously, the closed electromagnetic valve on the steam pressurized pipeline, the magnetic valve on the exhaust pressure relief pipeline is opened, and the canister internal pressure descends.When the canister internal pressure was brought down below the check-valves upstream pressure, check-valves was opened, and condensate water flows into canister automatically by check-valves in the big jar, the next circulation of beginning.
In cyclic process, if system breaks down, then manually open the accident drain valve of large and small pot bottom, condensed water is drained into sewer, guarantee the continuity of producing.
The application's good effect is: adopt new supercharging principle, can increase substantially water pump anti-cavitation ability, and it is strong to have adaptability for working condition, operational reliability height, characteristics such as system investment and operating cost are low.
Description of drawings
Fig. 1 is the schematic diagram of the embodiment of the present application.
Among the figure: the big jar condensate water water inlet pipe of 1-, 2-air hose, 3-exhaust pressure relief pipe, 4, the 5-magnetic valve, 6,7-pressure guiding pipe, big jar of 8-, big jar of condensate water outlet pipe of 9-, big jar of accident drain valve of 10-, the 11-check-valves, 12-canister condensate water water inlet pipe, 13-canister, 14-canister accident drain valve, 15-differential pressure transmitter, 16-pressure transmitter, 17-canister condensate water outlet pipe, 18-electrical control cabinet, 19-centrifugal water pump, 20-steam under pressure pipe, 21-convection current thermal insulation board, 22-pressure-regulating valve.
The specific embodiment
Further specify the application's enforcement below in conjunction with Fig. 1.
The application's system mainly is made up of water tank, centrifugal water pump 19 and electrical control cabinet 18, big jar 8 and canister 13 that water tank is equal diameters, highly do not wait, and big jar 8 height is the twice of canister 13; Be provided with condensate water water inlet pipe 1 and condensate water outlet pipe 9 for big jar 8, also be provided with condensate water water inlet pipe 12 and condensate water outlet pipe 17 on the canister 13, the big model of caliber of big jar of condensate water water inlet pipe 1 of big jar of condensate water outlet pipe 9 ratios; The caliber of canister condensate water water inlet pipe 12 and big jar of condensate water outlet pipe 9 is identical and be connected by check-valves 11; On big jar 8 top air hose 2 is set, constant to guarantee jar internal pressure; The air space on canister 13 tops links to each other with pressure transmitter 16 by pressure guiding pipe 7, to measure the pressure signal in the canister 13; The air space on canister 13 tops links to each other with differential pressure transmitter 15 by pressure guiding pipe 6 with the hydrospace of bottom, to measure the water level signal in the canister 13; On the top of canister 13, also be provided with steam under pressure pipe 20, magnetic valve 5, exhaust pressure relief pipe 3 and magnetic valve 4, on steam under pressure pipe 20, also be provided with self-contained pressure regulator 22; The holding wire of differential pressure transmitter 15 and pressure transmitter 16, magnetic valve 4 and 5 control line and the power line of centrifugal water pump 19 all are connected on the electrical control cabinet 18.In addition, be provided with accident drain valve 10, also be provided with accident drain valve 14 in the bottom of canister 13 big jar 8 bottom.
In order to reduce steam consumption quantity, in canister 13, be provided with convection current thermal insulation board 21, convection current thermal insulation board 21 has LLDPE (LLDPE) nonwoven to make.
Claims (3)
1, a kind of continuous full-automatic enclosed recovery system of high-temperature condensation water, it comprises water tank, centrifugal water pump and switch board, it is characterized in that: big jar and canister that water tank is equal diameters, highly do not wait, big jar height is the twice of canister; Be equipped with condensate water water inlet pipe and condensate water outlet pipe on big jar and the canister, the big model of caliber of the big jar of big jar of condensate water outlet pipe ratio condensate water water inlet pipe; The caliber of canister condensate water water inlet pipe and big jar of condensate water outlet pipe is identical and be connected by check-valves; On the tank deck air hose is set very much; The air space on canister top links to each other with pressure transmitter by pressure guiding pipe; The air space on canister top links to each other with differential pressure transmitter by pressure guiding pipe with the hydrospace of bottom; On the top of canister, also be provided with steam under pressure pipe, magnetic valve, exhaust pressure relief pipe and magnetic valve, on the steam under pressure pipe, also be provided with self-contained pressure regulator; The power line of the holding wire of differential pressure transmitter and pressure transmitter, the control line of magnetic valve and centrifugal water pump all is connected to electrical control cashier's office in a shop; Bottom at big jar and canister all is provided with the accident drain valve.
2, the continuous full-automatic enclosed recovery system of high-temperature condensation water as claimed in claim 1 is characterized in that, being provided with thickness in canister is 5 centimetres, the convection current thermal insulation board of diameter than the little 4-6 of canister internal diameter centimetre.
3,, the continuous full-automatic enclosed recovery system of high-temperature condensation water as claimed in claim 2, it is characterized in that the convection current thermal insulation board is made by the LLDPE nonwoven.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710116048A CN100580316C (en) | 2007-12-19 | 2007-12-19 | Continuous full-automatic enclosed recovery system for high temperature condensate water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710116048A CN100580316C (en) | 2007-12-19 | 2007-12-19 | Continuous full-automatic enclosed recovery system for high temperature condensate water |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101196292A CN101196292A (en) | 2008-06-11 |
| CN100580316C true CN100580316C (en) | 2010-01-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200710116048A Expired - Fee Related CN100580316C (en) | 2007-12-19 | 2007-12-19 | Continuous full-automatic enclosed recovery system for high temperature condensate water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100580316C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102607015A (en) * | 2012-03-23 | 2012-07-25 | 上海蕲黄节能环保设备有限公司 | Closed condensate water recovery device |
| CN107044630A (en) * | 2017-03-27 | 2017-08-15 | 广东肇庆西江机械制造有限公司 | A kind of intelligent draining system |
| CN112413395B (en) * | 2019-08-22 | 2022-11-04 | 中国石油天然气股份有限公司 | Liquid ammonia conveying system and method |
| CN113623630B (en) * | 2021-06-28 | 2023-07-07 | 成都众奇化工有限公司 | Boiler steam airtight circulation system |
-
2007
- 2007-12-19 CN CN200710116048A patent/CN100580316C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN101196292A (en) | 2008-06-11 |
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Granted publication date: 20100113 Termination date: 20101219 |