CN107328255A - The cooling tower spraying and splashing facility and its flow rate adjusting method of a kind of stepless quantity-regulating - Google Patents
The cooling tower spraying and splashing facility and its flow rate adjusting method of a kind of stepless quantity-regulating Download PDFInfo
- Publication number
- CN107328255A CN107328255A CN201710661486.7A CN201710661486A CN107328255A CN 107328255 A CN107328255 A CN 107328255A CN 201710661486 A CN201710661486 A CN 201710661486A CN 107328255 A CN107328255 A CN 107328255A
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- Prior art keywords
- nozzle
- flow
- spiral case
- screw rod
- cooling tower
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- 238000001816 cooling Methods 0.000 title claims abstract description 30
- 238000005507 spraying Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 30
- 230000007423 decrease Effects 0.000 claims description 10
- 230000001133 acceleration Effects 0.000 claims description 4
- 230000005484 gravity Effects 0.000 claims description 4
- 230000033001 locomotion Effects 0.000 claims description 4
- 235000007164 Oryza sativa Nutrition 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 235000009566 rice Nutrition 0.000 claims description 3
- 240000007594 Oryza sativa Species 0.000 claims 1
- 230000008859 change Effects 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 3
- 230000033228 biological regulation Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 4
- 239000007921 spray Substances 0.000 description 3
- 241000209094 Oryza Species 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
- F28C1/00—Direct-contact trickle coolers, e.g. cooling towers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F25/00—Component parts of trickle coolers
- F28F25/02—Component parts of trickle coolers for distributing, circulating, and accumulating liquid
- F28F25/06—Spray nozzles or spray pipes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
- F28F27/003—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus specially adapted for cooling towers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Nozzles (AREA)
Abstract
The invention discloses the cooling tower spraying and splashing facility and its flow rate adjusting method of a kind of stepless quantity-regulating, including spiral case, nozzle, main shaft and splash box；The sidepiece of the spiral case and bottom are respectively arranged with water inlet and delivery port；The nozzle is arranged on the water outlet of spiral case；The top of the main shaft is arranged in spiral case, bottom connection splash box；Also include being arranged at the Flow-rate adjustment component inside spiral case；The Flow-rate adjustment component includes the screw rod and cone tube core being connected as a single entity；The cone tube core is arranged at the lower end of screw rod, can change the size of pelvic outlet plane with the pelvic outlet plane for moving down incision nozzle of screw rod.The height of cone core pipe is raised and lowered by turn adjusting screw rod by the present invention; change the incision section of cone core pipe and nozzle exit plane; so as to change the water-outlet area of jet expansion; reach the purpose of regulation flow; remove and install process convenient; cost can be greatly saved, and can be with on-line tuning, it is not necessary to shut down.
Description
Technical field
The present invention relates to the cooling tower spraying and splashing facility and its flow rate adjusting method of a kind of stepless quantity-regulating.
Background technology
Currently, the indispensable circulating water cooling system of industrial production is faced with a skill using energy-saving and emission-reduction as core
Art revolution, the effect that traditional cooling tower spray system (namely water distribution system) is assert in the design is carried by general booster action
Height has arrived main function.The capital equipment device of spray system is spraying and splashing facility.The cooling effect of splash process is in traditional design
It is identified as the 20% of the overall cooling effectiveness of cooling tower in code, packing act as the overall cooling effectiveness of cooling tower
70%, also 10% is rain belt (to the afterbody of collecting-tank i.e. below filler bottom), but have ignored spraying and splashing facility splash state pair
The influence of water drenching effect, aforementioned proportion it is pure it is broken be to estimate or obtained by experiment according to the skyborne length of flow across of water drenching
, the good and bad degree of its splash is ignored；In addition, in industrial tower practice, once the flow of spraying and splashing facility is calculated and determined,
It must not just change again in operation, unless changed after shutting down.And during actual motion, summer and winter-spring season operating flux are not
The same, because the difference of civil engineering quality will also result in the uneven, unreasonable of assignment of traffic, however, all splash dresses at present
The flow put is determined by obtaining the diameter of delivery nozzle after calculating, and nozzle is to be filled in advance with spraying and splashing facility assembly
Prepare, such as to adjust flow, it is necessary to pull down unit replacement nozzle (also referred to as spray core), and be operationally that impossible realize tune
Section.Therefore a kind of spraying and splashing facility that can freely adjust flow is sought necessary.
The content of the invention
The present invention first purpose be to provide it is a kind of can be with the cooling tower spraying and splashing facility of stepless quantity-regulating
The technical scheme for realizing the object of the invention is a kind of cooling tower spraying and splashing facility of stepless quantity-regulating, including spiral case, nozzle,
Main shaft and splash box；The sidepiece of the spiral case and bottom are respectively arranged with water inlet and delivery port；The nozzle is arranged on spiral case
Water outlet；The top of the main shaft is arranged in spiral case, bottom connection splash box；Also include being arranged at the stream inside spiral case
Measure adjusting part；The Flow-rate adjustment component includes the screw rod and cone tube core being connected as a single entity；The cone tube core is arranged at spiral shell
The lower end of bar, can change the size of pelvic outlet plane with the pelvic outlet plane for moving down incision nozzle of screw rod.
The Flow-rate adjustment component also includes the adjustment seat being arranged on spiral case；It is threaded, is used in the adjustment seat
Engaged with screw flight.
The Flow-rate adjustment component also includes the nut for standing screw.
Datum line is carved with the adjustment seat, the datum line represents the tip of cone tube core and pelvic outlet plane is located at same put down
The position in face.
Second object of the present invention is to provide a kind of flow rate adjusting method of the cooling tower spraying and splashing facility of stepless quantity-regulating, bag
Include following steps：
Step 1: using the cooling tower spraying and splashing facility of foregoing described stepless quantity-regulating；
Step 2: the pitch of the screw rod of the cooling tower spraying and splashing facility of the stepless quantity-regulating of production is determined for h, in cone tube core
Heart angle is α, and the outlet diameter of nozzle is D0, the area of pelvic outlet plane is SD0；When the tip of cone tube core is located at pelvic outlet plane
After same plane, continue to decline, often decline a diameter of D at a pitch, cone tube core incision pelvic outlet plane1, calculate this
When actual nozzle outlet water-outlet area Sy, obtain n actual nozzle water outlet open area S during 1~n pitch of decliney, n is certainly
So count；
Step 3: using formula Qy=μ SyThe n actual nozzle that √ 2gH3600 calculate when declining 1~n pitch goes out
Water-carrying capacity Qy, n is natural number, and μ is discharge coefficient, and g is acceleration of gravity, and H is nozzle operation head rice number；By the stepless quantity-regulating
Cooling tower spraying and splashing facility n Flow-rate adjustment component movement when actual nozzle water flow QyForm is made；
Step 4: needed to adjust the upper-lower position of the screw rod 51 of Flow-rate adjustment component 5 at any time according to operating mode during operation, and then
Adjust nozzle water flow Q.
The present invention principle be：
The water flow calculation formula of nozzle goes out to flow formula using short tube：
Q=μ 1/4 π (D) 2 √ 2gH3600
In formula：Q is flow (m3/h)；μ is discharge coefficient；D is nozzle exit diameter (m)；G is acceleration of gravity；H is
Nozzle operation head (m).
From the equations above as can be seen that the flow of nozzle and the diameter of nozzle are direct proportionality, the diameter of nozzle
Bigger, then the water-outlet area of nozzle is bigger, and flow is also bigger, and technical principle of the invention is that by increasing and decreasing going out for nozzle
Water area adjusts the size of flow to reach.Assuming that the discharge area of nozzle is designed as S by maximum stream flowd, above-mentioned cone core
Pipe is placed in the center of nozzle, and can be moved up and down by the effect of screw rod, lower end and nozzle exit plane when cone core pipe
When maintaining an equal level, its flow is QSd(being now maximum stream flow), when cone core pipe continues down, it is with jet expansion in same plane
When section formed an annular, if the sectional area of cone be Sj, water-outlet area at this moment is QSd-QSj。
If screw pitch is h, the central angle of cone core pipe is α, when the lower end of cone core pipe maintains an equal level with going out horizontal plane,
Nozzle outlet diameter is D0, discharge area is SD0, when turn screw rod makes cone core pipe move down C h, Ch=y is made, the new shop of cone is made
Cut a diameter of D during pelvic outlet plane1, radius is x, x=tg (α/2) y, then sectional area during cone core pipe incision outlet is 1/
4π[tg(α/2)y]2, so the water outlet real area for obtaining jet expansion now is SD0-1/4π[tg(α/2)y]2, wherein：
SD0=1/4 π (D)2If the water outlet real area of jet expansion is Sy, then have
Sy=1/4 π (D)2-1/4π[tg(α/2)y]2
Due to the √ 2gH3600 (m of 1/4 π (D) of flow formula Q=μ 2 of nozzle3/ h), wherein 1/4 π (D)2For nozzle
Pelvic outlet plane area, thus may determine that actual nozzle water flow Qy=μ Sy√ 2gH3600, determine pitch and center
Angle can just be calculated.
Employ after above-mentioned technical proposal, the positive effect that the present invention is brought is：The present invention changes traditional splash
Device flow adjustment mode, it is no longer necessary to shut down adjustment, the height of cone core pipe is raised and lowered by turn adjusting screw rod, changes
Become the incision section of cone core pipe and nozzle exit plane, so as to change the water-outlet area of jet expansion, reach regulation flow
Purpose, it is convenient to remove and install process, can greatly save cost, and can be with on-line tuning, it is not necessary to shut down.Adjustment seat be with
What spiral case had a style of one's own, adjustment seat is provided with internal thread, and screw rod is provided with external screw thread, and screw rod will all make cone per one angle of turn
Some height is raised and lowered in body core pipe, and changes the level incision section of cone core pipe and jet expansion, so as to change nozzle
The water-outlet area of outlet, is finally reached the flow of adjustment jet expansion, and nut is screwed when screw rod turn is to appropriate location,
To ensure the highly stable of screw rod.
Brief description of the drawings
In order that present disclosure is easier to be clearly understood, it is right below according to specific embodiment and with reference to accompanying drawing
The present invention is described in further detail, wherein
Fig. 1 is structural representation of the invention.
In accompanying drawing marked as：
Spiral case 1, nozzle 2, main shaft 3, splash box 4, Flow-rate adjustment component 5, screw rod 51, cone tube core 52, adjustment seat 53, spiral shell
Cap 54.
Embodiment
(embodiment 1)
See Fig. 1, a kind of cooling tower spraying and splashing facility of stepless quantity-regulating of the present embodiment, including spiral case 1, nozzle 2, main shaft 3, splash
Water pond 4 and the Flow-rate adjustment component 5 being arranged inside spiral case 1；The sidepiece of spiral case 1 and bottom are respectively arranged with water inlet and water outlet
Mouthful；Nozzle 2 is arranged on the water outlet of spiral case 1；The top of main shaft 2 is arranged in spiral case 1, bottom connection splash box 4；Flow is adjusted
Section component 5 includes the screw rod 51 and cone tube core 52 being connected as a single entity；Cone tube core 52 is arranged at the lower end of screw rod 51, can be with spiral shell
The pelvic outlet plane 21 moving down incision nozzle 2 of bar 51 and change the size of pelvic outlet plane 21.Flow-rate adjustment component 5 also includes
It is arranged on the adjustment seat 53 on spiral case 1；It is threaded, is engaged for the screw thread with screw rod 51 in adjustment seat 53.Flow-rate adjustment group
Part 5 also includes the nut 54 for standing screw 51.Datum line is carved with adjustment seat 53, the datum line represents cone tube core 52
The position that tip is generally aligned in the same plane with pelvic outlet plane 21.
The flow rate adjusting method of the cooling tower spraying and splashing facility of stepless quantity-regulating, comprises the following steps：
Step 1: determining the structure of the cooling tower spraying and splashing facility of stepless quantity-regulating according to Fig. 1；
Step 2: the pitch for determining the screw rod 51 of the cooling tower spraying and splashing facility of the stepless quantity-regulating of production is h, cone tube core 52
Central angle be α, the outlet diameter of nozzle 2 is D0, the area of pelvic outlet plane 21 is SD0；When the tip and outlet of cone tube core 52
After plane 21 is generally aligned in the same plane, continue to decline, often decline the diameter at a pitch, the incision pelvic outlet plane 21 of cone tube core 52
For D1, calculate actual nozzle outlet water-outlet area S nowy, obtain n actual nozzle water outlet during 1~n pitch of decline
Open area Sy, n is natural number；
Step 3: with formula Q=μ Sy·√2gH·3600m3The n nozzle that/h is calculated when declining 1~n pitch is real
Border water flow Qy, n is natural number, and μ is discharge coefficient, and g is acceleration of gravity, and H is nozzle operation head rice number；This is stepless
The actual water flow Q of nozzle during the n Flow-rate adjustment component movement of the cooling tower spraying and splashing facility of tune amountyForm is made；
Step 4: needed to adjust the upper-lower position of the screw rod 51 of Flow-rate adjustment component 5 at any time according to operating mode during operation, and then
Adjust nozzle water flow Qy。
Example：Known μ=0.9, α=300, D=0.070m, h are 0.001m, often decline the y=0.001m, H of a pitch
=0.8,
Then：Qy=0.9x { 0.25x3.14x (0.07)2-0.25x3.14[tg(30/2)x0.001]2}·√2gH·3600
=44 (m3/h).
Result of calculation：When turn screw rod 51 makes cone core pipe 52 move down 1mm, the flow of nozzle is 44m3/h.
If pitch is designed as 4mm, flow at this moment is：
Q=0.9x { 0.25x3.14x (0.07)2-0.25x3.14[tg(30/2)x0.004]2√ 2gH3600=
27.7(m3/h)。
Particular embodiments described above, has been carried out further in detail to the purpose of the present invention, technical scheme and beneficial effect
Describe in detail it is bright, should be understood that the foregoing is only the present invention specific embodiment, be not intended to limit the invention, it is all
Within the spirit and principles in the present invention, any modification, equivalent substitution and improvements done etc., should be included in the guarantor of the present invention
Within the scope of shield.
Claims (5)
1. a kind of cooling tower spraying and splashing facility of stepless quantity-regulating, including spiral case (1), nozzle (2), main shaft (3) and splash box (4)；Institute
The sidepiece and bottom for stating spiral case (1) are respectively arranged with water inlet and delivery port；The nozzle (2) is arranged on the water outlet of spiral case (1)
At mouthful；The top of the main shaft (2) is arranged in spiral case (1), bottom connection splash box (4)；It is characterized in that：Also include setting
In the internal Flow-rate adjustment component (5) of spiral case (1)；The Flow-rate adjustment component (5) includes the screw rod (51) being connected as a single entity and cone
Body tube core (52)；The cone tube core (52) is arranged at the lower end of screw rod (51), can move down incision with screw rod (51)
The pelvic outlet plane (21) of nozzle (2) and the size for changing pelvic outlet plane (21).
2. a kind of cooling tower spraying and splashing facility of stepless quantity-regulating according to claim 1, it is characterised in that：The Flow-rate adjustment
Component (5) also includes the adjustment seat (53) being arranged on spiral case (1)；It is threaded, is used for and screw rod on the adjustment seat (53)
(51) screw thread engagement.
3. a kind of cooling tower spraying and splashing facility of stepless quantity-regulating according to claim 2, it is characterised in that：The Flow-rate adjustment
Component (5) also includes the nut (54) for standing screw (51).
4. a kind of cooling tower spraying and splashing facility of stepless quantity-regulating according to claim 3, it is characterised in that：The adjustment seat
(53) datum line is carved with, the datum line represents the position that the tip of cone tube core (52) is generally aligned in the same plane with pelvic outlet plane (21)
Put.
5. the flow rate adjusting method of the cooling tower spraying and splashing facility of a kind of stepless quantity-regulating, it is characterised in that comprise the following steps：
Step 1: using the cooling tower spraying and splashing facility of stepless quantity-regulating as claimed in claim 4；
Step 2: the pitch for determining the screw rod (51) of the cooling tower spraying and splashing facility of the stepless quantity-regulating of production is h, cone tube core (52)
Central angle be α, the outlet diameter of nozzle (2) is D0, the area of pelvic outlet plane (21) is SD0；When the tip of cone tube core (52)
After being generally aligned in the same plane with pelvic outlet plane (21), continue to decline, often decline a pitch, cone tube core (52) incision pelvic outlet plane
(21) a diameter of D at place1, calculate actual nozzle outlet water-outlet area S nowy, obtain n during 1~n pitch of decline
Actual nozzle water outlet open area Sy, n is natural number；
Step 3: with formula Q=μ Sy·√2gH·3600(m3/ h) calculate decline 1~n pitch when n nozzle reality
Water flow Qy, n is natural number, and μ is discharge coefficient, and g is acceleration of gravity, and H is nozzle operation head rice number；By the stepless-adjustment
The actual water flow Q of nozzle during the n Flow-rate adjustment component movement of the cooling tower spraying and splashing facility of amountyForm is made；
Step 4: being needed to adjust the upper-lower position of the screw rod 51 of Flow-rate adjustment component 5 at any time according to operating mode during operation, and then adjust
Nozzle water flow Qy。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710661486.7A CN107328255A (en) | 2017-08-04 | 2017-08-04 | The cooling tower spraying and splashing facility and its flow rate adjusting method of a kind of stepless quantity-regulating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710661486.7A CN107328255A (en) | 2017-08-04 | 2017-08-04 | The cooling tower spraying and splashing facility and its flow rate adjusting method of a kind of stepless quantity-regulating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107328255A true CN107328255A (en) | 2017-11-07 |
Family
ID=60225513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710661486.7A Pending CN107328255A (en) | 2017-08-04 | 2017-08-04 | The cooling tower spraying and splashing facility and its flow rate adjusting method of a kind of stepless quantity-regulating |
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| Country | Link |
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| CN (1) | CN107328255A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109201751A (en) * | 2018-11-14 | 2019-01-15 | 张占东 | A kind of two edge roll zones hot air device of aluminium foil mill band |
| CN109341406A (en) * | 2018-12-13 | 2019-02-15 | 广东新菱空调科技有限公司 | Float-ball type crossing current tower variable-flow spray head |
| CN110195899A (en) * | 2019-05-24 | 2019-09-03 | 刘良存 | A kind of cooling liquid provisioning component, cooling component and outdoor shading tool |
| CN116749089A (en) * | 2023-08-11 | 2023-09-15 | 张家港广大特材股份有限公司 | Liquid honing injection device and closed grinding-free method |
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| CN102151623A (en) * | 2011-02-22 | 2011-08-17 | 中国农业科学院农田灌溉研究所 | Variable flow sprayer nozzle |
| CN103357529A (en) * | 2013-07-08 | 2013-10-23 | 中国农业科学院农田灌溉研究所 | Flow-adjustable nozzle |
| CN203785529U (en) * | 2014-02-24 | 2014-08-20 | 张韦欣 | Cooling-tower spraying device |
| CN104048553A (en) * | 2014-07-01 | 2014-09-17 | 上海理工大学 | Device and method for distributing water uniformly under different flows of cooling tower |
| CN206095032U (en) * | 2016-07-07 | 2017-04-12 | 江苏环球龙圣环境科技发展有限公司 | Hydraulic turbine formula splash device |
| CN207006907U (en) * | 2017-08-04 | 2018-02-13 | 江苏环球龙圣环境科技发展有限公司 | A kind of cooling tower spraying and splashing facility of stepless quantity-regulating |
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2017
- 2017-08-04 CN CN201710661486.7A patent/CN107328255A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102151623A (en) * | 2011-02-22 | 2011-08-17 | 中国农业科学院农田灌溉研究所 | Variable flow sprayer nozzle |
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| CN203785529U (en) * | 2014-02-24 | 2014-08-20 | 张韦欣 | Cooling-tower spraying device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109201751A (en) * | 2018-11-14 | 2019-01-15 | 张占东 | A kind of two edge roll zones hot air device of aluminium foil mill band |
| CN109341406A (en) * | 2018-12-13 | 2019-02-15 | 广东新菱空调科技有限公司 | Float-ball type crossing current tower variable-flow spray head |
| CN110195899A (en) * | 2019-05-24 | 2019-09-03 | 刘良存 | A kind of cooling liquid provisioning component, cooling component and outdoor shading tool |
| CN116749089A (en) * | 2023-08-11 | 2023-09-15 | 张家港广大特材股份有限公司 | Liquid honing injection device and closed grinding-free method |
| CN116749089B (en) * | 2023-08-11 | 2023-11-28 | 张家港广大特材股份有限公司 | Liquid honing injection device and closed grinding-free method |
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Application publication date: 20171107 |