CN105544657A - Control method of one-way pressure stabilizing tower device - Google Patents
Control method of one-way pressure stabilizing tower device Download PDFInfo
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- CN105544657A CN105544657A CN201610000735.3A CN201610000735A CN105544657A CN 105544657 A CN105544657 A CN 105544657A CN 201610000735 A CN201610000735 A CN 201610000735A CN 105544657 A CN105544657 A CN 105544657A
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- stabilizing tower
- water
- cool cycles
- unidirectional pressure
- cycles pond
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000000087 stabilizing effect Effects 0.000 title abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 225
- 238000001816 cooling Methods 0.000 claims abstract description 73
- 239000000498 cooling water Substances 0.000 claims abstract description 26
- 239000013589 supplement Substances 0.000 claims abstract description 8
- 238000005086 pumping Methods 0.000 claims description 43
- 230000003020 moisturizing effect Effects 0.000 claims description 25
- 230000001502 supplementing effect Effects 0.000 claims description 13
- 230000003247 decreasing effect Effects 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 4
- 230000006866 deterioration Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 239000000523 sample Substances 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 2
- 230000003134 recirculating effect Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B11/00—Arrangements or adaptations of tanks for water supply
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B7/00—Water main or service pipe systems
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B7/00—Water main or service pipe systems
- E03B7/07—Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons or valves, in the pipe systems
- E03B7/075—Arrangement of devices for control of pressure or flow rate
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B7/00—Water main or service pipe systems
- E03B7/07—Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons or valves, in the pipe systems
- E03B7/077—Arrangement of backflow preventing devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0075—For recording or indicating the functioning of a valve in combination with test equipment
- F16K37/0091—For recording or indicating the functioning of a valve in combination with test equipment by measuring fluid parameters
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B11/00—Arrangements or adaptations of tanks for water supply
- E03B2011/005—Tanks with two or more separate compartments divided by, e.g. a flexible membrane
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Health & Medical Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
- Control Of Non-Electrical Variables (AREA)
Abstract
The invention relates to a control method of a one-way pressure stabilizing tower device. An overflowing weir and a communicating pipe with a check valve are arranged between a one-way pressure stabilizing tower and a cooling water pool. A PLC controls valves corresponding to the one-way pressure stabilizing tower and the cooling water pool to be turned on or off according to the water levels of the one-way pressure stabilizing tower and the cooling water pool. During normal operation, backwater of a cooling system flows into the one-way pressure stabilizing tower, passes through the overflowing weir and then flows into the cooling water pool, so that water in the one-way pressure stabilizing tower is kept cycled, and water quality is guaranteed. During pressure-supplementing operation, the water level of the one-way pressure stabilizing tower is lowered, the PLC controls the corresponding valve to be turned on or off according to the water level of the one-way pressure stabilizing tower, backwater in the cooling system directly enters the cooling water pool, and the one-way pressure stabilizing tower and the cooling water pool play roles of themselves, and do not affect each other. During cooling water-supplementing operation, the PLC controls the corresponding valve to be turned on or off according to the water level of the one-way pressure stabilizing tower, backwater in the cooling system directly enters the cooling water pool, the one-way pressure stabilizing tower supplements water to the cooling circulation water system through the communicating pipe, and safe operation of the cooling circulation water system is guaranteed.
Description
Technical field
The present invention relates to a kind of unidirectional pressure-stabilizing tower eliminating pumping plant negative pressure water hammer, be specifically related to a kind of be placed in Forebay of Pumping Station top, be combined with cool cycles pond, the control method eliminating the unidirectional pressure-stabilizing tower that pumping plant negative pressure water hammer and the pumping plant cool cycles water yield regulate can be met.
Background technology
The large pumping station of water delivery engineering is once the loss of power accident of drawing water, and pumping plant outlet pipeline rapidly negative pressure water hammer can occur, serious threat pipeline configuration safety.And by arranging storage inside compared with big yield and the unidirectional pressure-stabilizing tower with certain water level elevation is the reliable engineering measure eliminating this threat: producing pressure once pipeline generation negative pressure water hammer reduces, water in pressure-stabilizing tower can add to rapidly in pipeline, can avoid because negative pressure water hammer causes pipeline damage.
Large pumping station water pump assembly installed power is large, usually needs to adopt water cooling.For saving cooling water, adopting cooling water recirculation system and arranging cool cycles pond to store adjustment cooling water inflow is the most frequently used method.
The probability occurred due to water hammer is very little, and being stored in water a large amount of in unidirectional pressure-stabilizing tower because of long-term lacking flowing can cause water quality deterioration.And the requirement routinely of the cool cycles pool volume of good fluidity generally can not be very large, but there is the security risk that cooling water uses up when make-up water source reliability is lower.In addition, pressure-stabilizing tower is set and cool cycles pond need take larger pumping plant land used, cool cycles pond also wishes to keep higher water level to be beneficial to the energy-saving run of cooling circulating water system, and large pumping station need arrange larger forebay to regulate the turnover water yield, also occupies larger area.
Summary of the invention
The object of the present invention is to provide a kind of control method of unidirectional pressure-stabilizing tower device that be placed in Forebay of Pumping Station top, that be combined with cool cycles pond.This device can: utilize cooling circulating water to connect with unidirectional pressure-stabilizing tower and make the water circulation of pressure-stabilizing tower flow to prevent water quality deterioration; With the volume enlargement of unidirectional pressure-stabilizing tower, the memory space of cooling circulating water is improving the operational reliability of recirculating cooling water system; Unidirectional pressure-stabilizing tower and cool cycles pond are placed in Forebay of Pumping Station top, and keep the water level in two ponds basically identical, save the operation energy consumption of engineering land used and cooling circulating water system.
In order to achieve the above object, technical scheme of the present invention is to provide a kind of control method of unidirectional pressure-stabilizing tower device, wherein:
The backwater of cooling circulating water system is made to enter unidirectional pressure-stabilizing tower or enter cool cycles pond;
If the backwater of cooling circulating water system directly enters unidirectional pressure-stabilizing tower, then enter cool cycles pond via unidirectional pressure-stabilizing tower, then enter cooling circulating water system by cool cycles pond; If the backwater of cooling circulating water system directly enters cool cycles pond, then enter cooling circulating water system again by cool cycles pond;
Wherein, between unidirectional pressure-stabilizing tower and cool cycles pond, be provided with overcurrent weir, during the absolute altitude of the water level in unidirectional pressure-stabilizing tower higher than overcurrent weir, carry out moisturizing via overcurrent weir to cool cycles pond from unidirectional pressure-stabilizing tower;
Further, the bottom in described unidirectional pressure-stabilizing tower and cool cycles pond is provided with the communicating pipe of being with flap valve, the liquid level difference between unidirectional pressure-stabilizing tower and cool cycles pond is greater than when setting numerical value, from unidirectional pressure-stabilizing tower via communicating pipe to the moisturizing of cool cycles pond.
Preferably, the return pipe of cooling circulating water system, comprises the pipeline respectively to unidirectional pressure-stabilizing tower and the water outlet of cool cycles pond, each pipeline is correspondingly provided with inlet valve;
Described unidirectional pressure-stabilizing tower and cool cycles pond are by the respective corresponding water level detector arranged, water-level detecting result is provided respectively to PLC, produced the control signal of ordering about corresponding inlet valve and opening or closing by PLC, the backwater of controlled cooling model reclaimed water system enters unidirectional pressure-stabilizing tower or enters cool cycles pond.
Preferably, when device normally runs, the process of unidirectional pressure-stabilizing tower and the series operation of cool cycles pond is as follows:
Described PLC is according to the normal result of detection of unidirectional pressure-stabilizing tower water level, produce the control signal that the inlet valve ordering about cool cycles pond is closed, the inlet valve of unidirectional pressure-stabilizing tower is opened, cooling circulating water system backwater is made directly to enter unidirectional pressure-stabilizing tower, and flow into cool cycles pond by described overcurrent weir from unidirectional pressure-stabilizing tower, then flow into cooling circulating water system from cool cycles pond.
Preferably, described unidirectional pressure-stabilizing tower is via the ftercompction cross current outlet piping of pumping station of band flap valve, when opening pressure higher than ftercompction water pipe upper check valve of the pressure of outlet piping of pumping station, the flap valve on ftercompction water pipe is made to keep closing, to stop unidirectional pressure-stabilizing tower to outlet piping of pumping station moisturizing.
Preferably, when device ftercompction runs, unidirectional pressure-stabilizing tower carries out water hammer and eliminates with the process of cooling water circulation independent operating as follows:
Described unidirectional pressure-stabilizing tower is via the ftercompction cross current outlet piping of pumping station of band flap valve, the pressure of outlet piping of pumping station is lower than the opening pressure of ftercompction water pipe upper check valve, flap valve on ftercompction water pipe is held open, carries out moisturizing by unidirectional pressure-stabilizing tower to outlet piping of pumping station;
Described PLC is according to the result of detection of unidirectional pressure-stabilizing tower water level decreasing, produce the control signal that the inlet valve ordering about unidirectional pressure-stabilizing tower is closed, the inlet valve in cool cycles pond is opened, make cooling circulating water system backwater directly enter cool cycles pond, then flow into cooling circulating water system from cool cycles pond.
Preferably, described cool cycles pond and supplementary cross current, this supplementary water pipe is provided with supplementing water control valve;
The water-level detecting result that described PLC declines according to cool cycles water level in water pool, produces the control signal of ordering about described supplementing water control valve and opening, to carry out moisturizing by outside water-carriage system to cool cycles pond.
Preferably, when device supplements cooling water operation, between outside water-carriage system and cool cycles pond, the supplementing water control valve supplemented on water pipe is closed, described PLC drops to below the absolute altitude on overcurrent weir, unidirectional pressure-stabilizing tower water level decreasing to the result of detection of overcurrent weir absolute altitude according to cool cycles water level in water pool, produce the control signal that the inlet valve ordering about cool cycles pond is opened, the inlet valve of unidirectional pressure-stabilizing tower is closed, make cooling circulating water system backwater directly enter cool cycles pond, then flow into cooling circulating water system from cool cycles pond.
Preferably, the water level tide in cool cycles pond, until liquid level difference between described unidirectional pressure-stabilizing tower and cool cycles pond is greater than when setting numerical value, opens the flap valve on communicating pipe, from unidirectional pressure-stabilizing tower via communicating pipe to the moisturizing of cool cycles pond.
Preferably, described unidirectional pressure-stabilizing tower and cool cycles pond are arranged on Forebay of Pumping Station.
In the present invention, unidirectional pressure-stabilizing tower is combined construction with cool cycles pond, and be together arranged on Forebay of Pumping Station top; Be connected with overcurrent weir between unidirectional pressure-stabilizing tower with cool cycles pond, and the communicating pipe of band flap valve is set in bottom; Cooling recirculation system return pipe is provided with the pipeline respectively to unidirectional pressure-stabilizing tower and the water outlet of cool cycles pond, and pipeline is provided with controllable valve; Cool cycles pond, unidirectional pressure-stabilizing tower are provided with water level automatic monitor table; Cool cycles pond is provided with the water inlet pipe according to liquid level automatic water supplement; The PLC control device that can open and close according to Liquid level valve.
Under normal circumstances, the backwater of cooling circulating water system flows into unidirectional pressure-stabilizing tower, and enter cool cycles pond by the overcurrent weir flow between unidirectional pressure-stabilizing tower and cool cycles pond, cooling circulating water system is fetched water by cool cycles pond again, meet normal cooling circulating water system water, make the water of unidirectional pressure-stabilizing tower be circulated simultaneously, ensure water quality.
When the aqueduct generation negative pressure water hammer be connected with pressure-stabilizing tower carries out moisturizing, water level automatic monitor table in unidirectional pressure-stabilizing tower detects water level decreasing, after signal feedback to PLC control device, send and close unidirectional pressure-stabilizing tower water inlet pipe valve and the signal simultaneously opening cooling circulating water pool water inlet pipe valve, cooling recirculation system backwater is made to flow into cool cycles pond, continue to meet the requirement that cooling circulating water system normally runs, thus unidirectional pressure-stabilizing tower and cool cycles pond function all can be played.
When the supplementing water lack of water cutout in cool cycles pond, cool cycles water level in water pool is reduced to below overcurrent weir, unidirectional pressure-stabilizing tower water level also drops to overcurrent weir absolute altitude, thus cannot from overcurrent weir to the moisturizing of cool cycles pond, now, water level automatic monitor table in unidirectional pressure-stabilizing tower detects water level decreasing, after signal feedback to PLC control device, send and close unidirectional pressure-stabilizing tower water inlet pipe valve and the signal simultaneously opening cooling circulating water pool water inlet pipe valve, cooling recirculation system backwater is made to flow into cool cycles pond, when cool cycles water level in water pool declines further, because the liquid level difference between two ponds causes the flap valve on communicating pipe to open, unidirectional pressure-stabilizing tower by communicating pipe to the moisturizing of cool cycles pond, improve the water supply security in cool cycles pond.
The present invention is according to the function and characteristic of Forebay of Pumping Station and unidirectional pressure-stabilizing tower, these two facilities of cool cycles pond, by unidirectional pressure-stabilizing tower and the series operation of cool cycles pond, and be arranged in Forebay of Pumping Station top, three is organically combined, maximize favourable factors and minimize unfavourable ones, avoid water quality deterioration in pressure-stabilizing tower, improve cooling circulating water system operational reliability and energy-saving benefit, and save engineering land used.
Accompanying drawing explanation
Fig. 1 is that device of the present invention normally runs schematic diagram (unidirectional pressure-stabilizing tower and the series operation of cool cycles pond).
Fig. 2 is that device ftercompction of the present invention runs schematic diagram (unidirectional pressure-stabilizing tower carries out water hammer to be eliminated and cooling water circulation independent operating).
Fig. 3 is that device of the present invention supplements cooling water operation schematic diagram (unidirectional pressure-stabilizing tower runs to the moisturizing of cool cycles pond).
Detailed description of the invention
As shown in Figures 1 to 3, the invention provides a kind of unidirectional pressure-stabilizing tower device that be placed in Forebay of Pumping Station top, that be combined with cool cycles pond, comprise: cooling circulating water system A, outlet piping of pumping station B, cool cycles pond C, unidirectional pressure-stabilizing tower D, Forebay of Pumping Station E, overcurrent weir 1, communicating pipe flap valve 2, cool cycles pond water inlet control valve 3, unidirectional pressure-stabilizing tower water inlet control valve 4, supplementing water control valve 5, voltage stabilizing water pipe flap valve 6, cool cycles water level in water pool probe 7, unidirectional pressure-stabilizing tower water level detector 8, PLC 9.
Wherein, unidirectional pressure-stabilizing tower D and cool cycles pond C is located at Forebay of Pumping Station E top, takes up an area no longer separately, saves pumping plant land used.
Cooling circulating water system A, by corresponding cooling system return pipe, connects unidirectional pressure-stabilizing tower D, cool cycles pond C respectively; Wherein, corresponding return pipe arranges unidirectional pressure-stabilizing tower water inlet control valve 4, whether cooling circulating water system backwater is controlled to unidirectional pressure-stabilizing tower D conveying from cooling circulating water system A; Another return pipe corresponding arranges cool cycles pond water inlet control valve 3, whether cooling circulating water system backwater is carried from cooling circulating water system A to cool cycles pond C and controls.
When unidirectional pressure-stabilizing tower D middle water level exceeds overcurrent weir 1 absolute altitude, current are by entering cool cycles pond C above overcurrent weir 1; Cool cycles pond C is communicated with cooling circulating water system A by cooling system water inlet pipe, send water to cooling circulating water system A.Outside water-carriage system, by supplementing cross current cool cycles pond C, this supplementary water pipe is provided with supplementing water control valve 5, to whether controlling to the C moisturizing of cool cycles pond.
By unidirectional pressure-stabilizing tower water level detector 8, the water level in unidirectional pressure-stabilizing tower D is detected, the control signal that PLC 9 generates according to result of detection and orders about cool cycles pond water inlet control valve 3, unidirectional pressure-stabilizing tower water inlet control valve 4 is held open separately or closes.Detected by the water level in cool cycles water level in water pool probe 7 couples of cool cycles pond C, PLC 9 generates the control signal of ordering about supplementing water control valve 5 and being held open or closing according to this detectable signal.
Unidirectional pressure-stabilizing tower D is via ftercompction cross current outlet piping of pumping station B, by arranging voltage stabilizing water pipe flap valve 6 on this ftercompction water pipe, according to the result that the pressure of outlet piping of pumping station B compares with the opening pressure of this voltage stabilizing water pipe flap valve 6, be held open or close, thus to whether controlling from unidirectional pressure-stabilizing tower D to outlet piping of pumping station B moisturizing.
Be provided with bleed off pipe in unidirectional pressure-stabilizing tower D and be communicated with Forebay of Pumping Station E; When in unidirectional pressure-stabilizing tower D, water level reaches bleed off pipe entrance place height, flow in Forebay of Pumping Station E by bleed off pipe.Communicating pipe is provided with between unidirectional pressure-stabilizing tower D and cool cycles pond C, the communicating pipe flap valve arranged 2 is held open according to the pressure reduction between unidirectional pressure-stabilizing tower D and cool cycles pond C or cuts out, thus to whether controlling from unidirectional pressure-stabilizing tower D to the C moisturizing of cool cycles pond.
When device normally runs, unidirectional pressure-stabilizing tower D and cool cycles pond C series operation state as shown in Figure 1: the pressure of outlet piping of pumping station B is higher than the opening pressure of voltage stabilizing water pipe flap valve 6, and flap valve 6 keeps closed condition, and the water level of unidirectional pressure-stabilizing tower D is constant; Unidirectional pressure-stabilizing tower water level detector 8 detect water level normal after transmit signals to PLC 9, control signal is sent by PLC 9, controlled cooling model circulating water pool water inlet control valve 3 keeps closedown, unidirectional pressure-stabilizing tower water inlet control valve 4 is held open, cooling circulating water system backwater flows into unidirectional pressure-stabilizing tower D through valve 4, flow into cool cycles pond C by the overcurrent weir 1 between unidirectional pressure-stabilizing tower D and cool cycles pond C again, then enter cooling circulating water system A.When device normally runs, the water of unidirectional pressure-stabilizing tower D take part in the circulation of cooling water, avoids water quality deterioration.
When device ftercompction runs, unidirectional pressure-stabilizing tower D carry out water hammer eliminate with the state of cooling water circulation independent operating as shown in Figure 2: the pressure of outlet piping of pumping station B is lower than the opening pressure of voltage stabilizing water pipe flap valve 6, flap valve 6 is opened to outlet piping of pumping station B moisturizing, the water level decreasing of unidirectional pressure-stabilizing tower D; PLC 9 is transmitted signals to after unidirectional pressure-stabilizing tower water level detector 8 detects water level decreasing, control signal is sent by PLC 9, controlled cooling model circulating water pool water inlet control valve 3 is opened, unidirectional pressure-stabilizing tower water inlet control valve 4 is closed, cooling circulating water system backwater flows into cool cycles pond C through valve 3, then enters cooling circulating water system A; Cool cycles water level in water pool probe 7 detects cool cycles pond C water level and transmits signals to PLC 9, controls supplementing water control valve 5 whether open moisturizing by PLC 9.When device ftercompction runs, unidirectional pressure-stabilizing tower D, to outlet piping of pumping station B moisturizing, has played water hammer and has eliminated function; Cooling circulating water system A fetches water from cool cycles pond C, maintains normal cooling water circulation, does not carry out water hammer eliminate the impact run by unidirectional pressure-stabilizing tower D.
When device supplements cooling water operation, the state that unidirectional pressure-stabilizing tower D runs to the C moisturizing of cool cycles pond is as shown in Figure 3: cooling water supplements water pipe and cuts off the water, the water level decreasing of cool cycles pond C, causes unidirectional pressure-stabilizing tower C water level decreasing cannot form series operation to the height on overcurrent weir 1; PLC 9 is transmitted signals to after unidirectional pressure-stabilizing tower water level detector 8 detects water level decreasing, control signal is sent by PLC 9, controlled cooling model circulating water pool water inlet control valve 3 is opened, unidirectional pressure-stabilizing tower water inlet control valve 4 is closed, cooling circulating water system backwater flows into cool cycles pond C through valve 3, then enters cooling circulating water system A; Cool cycles pond C water level continues to decline, after forming liquid level difference certain between unidirectional pressure-stabilizing tower D, communicating pipe, flap valve 2 opened because of the pressure reduction between two ponds, to the C moisturizing of cool cycles pond, met when cooling water replenishment is cut off the water for cooling circulating water system provides the requirement of moisturizing.When device supplements cooling water operation, cooling circulating water system A utilizes the volume of unidirectional pressure-stabilizing tower D supplementing as cool cycles pond C, substantially increases the safety in operation of cooling circulating water.
In sum, the present invention utilizes cooling circulating water to connect with unidirectional pressure-stabilizing tower to make the water circulation of pressure-stabilizing tower flow to prevent water quality deterioration; With the volume enlargement of unidirectional pressure-stabilizing tower, the memory space of cooling circulating water is improving the operational reliability of recirculating cooling water system; Unidirectional pressure-stabilizing tower and cool cycles pond are placed in Forebay of Pumping Station top, and keep the water level in two ponds basically identical, save the operation energy consumption of engineering land used and cooling circulating water system.
Although content of the present invention has done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to limitation of the present invention.After those skilled in the art have read foregoing, for multiple amendment of the present invention and substitute will be all apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (9)
1. a control method for unidirectional pressure-stabilizing tower device, is characterized in that:
The backwater of cooling circulating water system is made to enter unidirectional pressure-stabilizing tower or enter cool cycles pond;
If the backwater of cooling circulating water system directly enters unidirectional pressure-stabilizing tower, then enter cool cycles pond via unidirectional pressure-stabilizing tower, then enter cooling circulating water system by cool cycles pond; If the backwater of cooling circulating water system directly enters cool cycles pond, then enter cooling circulating water system again by cool cycles pond;
Wherein, between unidirectional pressure-stabilizing tower and cool cycles pond, be provided with overcurrent weir, during the absolute altitude of the water level in unidirectional pressure-stabilizing tower higher than overcurrent weir, carry out moisturizing via overcurrent weir to cool cycles pond from unidirectional pressure-stabilizing tower;
Further, the bottom in described unidirectional pressure-stabilizing tower and cool cycles pond is provided with the communicating pipe of being with flap valve, the liquid level difference between unidirectional pressure-stabilizing tower and cool cycles pond is greater than when setting numerical value, from unidirectional pressure-stabilizing tower via communicating pipe to the moisturizing of cool cycles pond.
2. the control method of unidirectional pressure-stabilizing tower device as claimed in claim 1, is characterized in that:
The return pipe of cooling circulating water system, comprises the pipeline respectively to unidirectional pressure-stabilizing tower and the water outlet of cool cycles pond, each pipeline is correspondingly provided with inlet valve;
Described unidirectional pressure-stabilizing tower and cool cycles pond are by the respective corresponding water level detector arranged, water-level detecting result is provided respectively to PLC, produced the control signal of ordering about corresponding inlet valve and opening or closing by PLC, the backwater of controlled cooling model reclaimed water system enters unidirectional pressure-stabilizing tower or enters cool cycles pond.
3. the control method of unidirectional pressure-stabilizing tower device as claimed in claim 2, is characterized in that:
When device normally runs, the process of unidirectional pressure-stabilizing tower and the series operation of cool cycles pond is as follows:
Described PLC is according to the normal result of detection of unidirectional pressure-stabilizing tower water level, produce the control signal that the inlet valve ordering about cool cycles pond is closed, the inlet valve of unidirectional pressure-stabilizing tower is opened, cooling circulating water system backwater is made directly to enter unidirectional pressure-stabilizing tower, and flow into cool cycles pond by described overcurrent weir from unidirectional pressure-stabilizing tower, then flow into cooling circulating water system from cool cycles pond.
4. the control method of unidirectional pressure-stabilizing tower device as described in claim 1 or 3, is characterized in that:
Described unidirectional pressure-stabilizing tower is via the ftercompction cross current outlet piping of pumping station of band flap valve, when opening pressure higher than ftercompction water pipe upper check valve of the pressure of outlet piping of pumping station, the flap valve on ftercompction water pipe is made to keep closing, to stop unidirectional pressure-stabilizing tower to outlet piping of pumping station moisturizing.
5. the control method of unidirectional pressure-stabilizing tower device as claimed in claim 2, is characterized in that:
When device ftercompction runs, unidirectional pressure-stabilizing tower carries out water hammer and eliminates with the process of cooling water circulation independent operating as follows:
Described unidirectional pressure-stabilizing tower is via the ftercompction cross current outlet piping of pumping station of band flap valve, the pressure of outlet piping of pumping station is lower than the opening pressure of ftercompction water pipe upper check valve, flap valve on ftercompction water pipe is held open, carries out moisturizing by unidirectional pressure-stabilizing tower to outlet piping of pumping station;
Described PLC is according to the result of detection of unidirectional pressure-stabilizing tower water level decreasing, produce the control signal that the inlet valve ordering about unidirectional pressure-stabilizing tower is closed, the inlet valve in cool cycles pond is opened, make cooling circulating water system backwater directly enter cool cycles pond, then flow into cooling circulating water system from cool cycles pond.
6. the control method of unidirectional pressure-stabilizing tower device as claimed in claim 5, is characterized in that:
Described cool cycles pond and supplementary cross current, this supplementary water pipe is provided with supplementing water control valve;
The water-level detecting result that described PLC declines according to cool cycles water level in water pool, produces the control signal of ordering about described supplementing water control valve and opening, to carry out moisturizing by outside water-carriage system to cool cycles pond.
7. the control method of unidirectional pressure-stabilizing tower device as claimed in claim 2, is characterized in that:
When device supplements cooling water operation, between outside water-carriage system and cool cycles pond, the supplementing water control valve supplemented on water pipe is closed, described PLC drops to below the absolute altitude on overcurrent weir, unidirectional pressure-stabilizing tower water level decreasing to the result of detection of overcurrent weir absolute altitude according to cool cycles water level in water pool, produce the control signal that the inlet valve ordering about cool cycles pond is opened, the inlet valve of unidirectional pressure-stabilizing tower is closed, make cooling circulating water system backwater directly enter cool cycles pond, then flow into cooling circulating water system from cool cycles pond.
8. the control method of unidirectional pressure-stabilizing tower device as claimed in claim 7, is characterized in that:
Water level tide in cool cycles pond, until liquid level difference between described unidirectional pressure-stabilizing tower and cool cycles pond is greater than when setting numerical value, opens the flap valve on communicating pipe, from unidirectional pressure-stabilizing tower via communicating pipe to the moisturizing of cool cycles pond.
9. the control method of unidirectional pressure-stabilizing tower device as claimed in claim 1, is characterized in that:
Described unidirectional pressure-stabilizing tower and cool cycles pond are arranged on Forebay of Pumping Station.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610000735.3A CN105544657B (en) | 2016-01-04 | 2016-01-04 | A kind of control method of unidirectional voltage stabilizing tower apparatus |
Applications Claiming Priority (1)
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| JPH06190529A (en) * | 1992-12-24 | 1994-07-12 | Nippon Light Metal Co Ltd | Method for cooling die |
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| US3970291A (en) * | 1973-12-28 | 1976-07-20 | Nippon Kokan Kabushiki Kaisha | Method of preventing occurrence of pulsation in a circulating liquid for evaporative cooling |
| JPH06190529A (en) * | 1992-12-24 | 1994-07-12 | Nippon Light Metal Co Ltd | Method for cooling die |
| CN101844157A (en) * | 2010-04-28 | 2010-09-29 | 刘森 | Integrated roll line control-based hot rolling cooling water control method and system |
| CN103132558A (en) * | 2012-12-14 | 2013-06-05 | 青岛瑞丰气体有限公司 | Intelligent water supply system |
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