CN201961839U - Remote cement effort transportation device - Google Patents
Remote cement effort transportation device Download PDFInfo
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- CN201961839U CN201961839U CN2011200320637U CN201120032063U CN201961839U CN 201961839 U CN201961839 U CN 201961839U CN 2011200320637 U CN2011200320637 U CN 2011200320637U CN 201120032063 U CN201120032063 U CN 201120032063U CN 201961839 U CN201961839 U CN 201961839U
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- cement
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- blowpipe
- pipe
- air compressor
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Abstract
The utility model discloses a remote cement effort transportation device, which comprises an air compressor, a compressed air hose, a feeding hose, a conveyer pipe, a blowpipe assistant, a compressed air hose valve, a blowpipe valve assistant. The conveyer pipe is a phi 150mm seamless steel pipe. The overall length of the conveyer pipe is at least 200 meters. Compressed air gets into the cement storehouse through an intake pipe and then fluidizes the cement. The cement gets into the conveyer pipe through the feeding hose and puts the cement to a stirred tank by adopting effort conveying theory. The biggest transmitting capacity of the device is 60 tons per hour, and the biggest transport distance is 400 meters. The transportation device has reduced intermediate link of on-the-spot and decreased expenses of building cement holding vessels so that improved economic benefits.
Description
Technical field
The utility model relates to a kind of Pneumatic conveyer, relates in particular to a kind of remote cement Pneumatic conveyer.
Background technology
In the port and pier infrastructure project, use the concrete cast-in-situ operating technique in a large number at the structure place that rigidity, globality and aseismicity are had relatively high expectations.Because there is continous pouring in project scale greatly and in the engineering, concrete amount is very huge, all need set up concrete mixing plant at engineering site usually.As concrete chief component, a large amount of cement need be stored in the cementing tank of concrete mixing plant.As how lower cost a large amount of cement being shipped to the concrete mixing plant cementing tank from harbour, is the problem that a needs is carefully considered.Usual way is that harbour is provided with the cement holding vessel, is transported to the cement holding vessel with concrete ship or cementing truck, has bad luck the facilities of mix storied building cementing tank with cement handlebar cement again.Twice discharging, traffic cost is high, and cement powder is shed leakage part and polluted the environment in transport process.The solution of using strength to carry cement is also arranged in the industry, but generally speaking, adopt the delivery duct caliber to be no more than
, Air compressor is no more than 20 m3/min, the strength fed distance is no more than 200m substantially.Fed distance is more than or equal to 200m, and especially fed distance still is blank more than or equal to the cement Pneumatic conveyer of 400m at present.
The utility model content
At above technical matters, the utility model provides and has comprised Air compressor, compressed air tube, feed hose, delivery pipe, help blowpipe, the pressurized air tube valve, help a kind of remote cement Pneumatic conveyer of blowpipe valve, described cement Pneumatic conveyer also comprises and helps blowpipe, help the blowpipe valve, help blowpipe one end to connect Air compressor, help the blowpipe other end to connect delivery pipe, and the delivery pipe length overall is at least 200 meters, the free air capacity of described Air compressor is at least 25m3/min, described inner diameter of delivery tube is 150mm, described delivery pipe elbow angle is 135 °, and described delivery pipe elbow angle is 135 °.
Described utility model is imported pressurized air in the concrete ship storehouse with the cement fluidization by air inlet pipe, cement enters delivery pipe by feed hose, adopt pneumatic conveying principle that cement is delivered to the facilities of mix storied building cementing tank then, reduced intermediate link like this, reduce the expense of building the cement holding vessel.
Strength is carried and to be claimed that again wind send, and it is the kinetic energy that utilizes air flows to produce, and ducted object is suspended in carry in the pipeline.Suspension mechanism and the state of kinematic motion of object particle in vertical tube neutralization levels pipe is different.Suspension in the vertical tube carry mechanism be object particle in air-flow vertically upward, be subjected to downward gravity
, the power that pushes away on the gentle flow direction
If,
Greater than
, then air-flow upwards promotes, and material is transported to a high position by low level.Suspension in the levelling pipe carries mechanism comparatively complicated.Air-flow is the turbulent motion state, and particle except that companion air-flow motion together, also has self rotatablely moving of particle in air-flow.When air-flow velocity was very big, particle all suspended, and was uniformly distributed in the gas, presented so-called suspension flow state; When air-flow velocity reduces, a part of particle deposition pipe bottom, but do not drop on the tube wall, it is thin to occur the top particle on the whole tube section, the so-called two-phase flow state that the bottom particle is intensive, the ultimate limit state of this state for suspending and carrying; When the further reduction of gas speed, will there be particle from air-flow, to separate and be sunken to the pipe end, slide along the pipe end or stop mobile the generation and pile up, and the top particles suspended is less and less, big portion particle packing bottom, even appearance " plugging " phenomenon.The air-flow velocity that strength is carried is selected very crucial, and the type selecting of Air compressor and pipe diameter is definite very important during design.
Calculate free air capacity by the following method,
Carry required theoretical tolerance to be:
In the above-mentioned expression formula
Be the cement quality flow,
Be the ratio of cement quality flow with gas phase mass flow, i.e. mixture ratio.Both must carry required theoretical tolerance in the substitution following formula
, unit is
, and actual air demand is 1.1～1.2 times of theoretical tolerance, density of air under 20 ℃ of temperature during normal pressure
Be 1.205
, we are design considerations with this state.So the discharge capacity of Air compressor is
Calculate the required internal diameter of delivery pipe again,
Computing formula is:
In the formula,
Be delivery air speed, with reference to relevant handbook, according to cement fall velocity and mixture ratio,
Get 20
, the substitution following formula promptly gets the delivery duct internal diameter.
Calculate the line pressure loss at last,
Formula is
In the formula,
Loss of pressure during for pure air-flow;
Linear loss coefficient during for pure air-flow;
Be the crushing ratio;
Be the delivery duct equivalent length.
Linear loss coefficient and Reynolds number
, the tube wall relative roughness
And the flow section shape is relevant.
Reynolds number
, wherein
The kinematic viscosity of air under 20 ℃ of temperature during for normal pressure.
The tube wall relative roughness
, wherein
Absolute roughness for tube wall.
The linear loss coefficient curve of pipe flow is
The crushing ratio
, coefficient
Get 0.3.
Calculate loss of pressure in the delivery pipe at last, loss of pressure less than selected Air compressor operation pressure 50% promptly in allowed band.
Description of drawings
Figure 1 shows that remote cement Pneumatic conveyer scheme drawing.
Being labeled as of each parts among the figure:
1, Air compressor; 2, compressed air tube; 3, feed hose; 4, delivery pipe;
5, cementing tank; 6, concrete ship storehouse; 7, help blowpipe; 8, pressurized air tube valve;
9, help the blowpipe valve.
The specific embodiment
Technical purpose and technique effect for describing technology contents of the present utility model, architectural feature, realization in detail are elaborated below in conjunction with drawings and embodiments.
Embodiment 1: a kind of remote cement Pneumatic conveyer comprises Air compressor 1, compressed air tube 2, feed hose 3, delivery pipe 4, helps blowpipe 7, pressurized air tube valve 8, helps blowpipe valve 9.400 meters of described delivery pipe length overalls, this feedway design per hour transports 60 tons of cement.
So cement quality flow
, mixture ratio
Get 40.
The substitution formula
Must carry required theoretical tolerance
Actual air demand is 1.1～1.2 times of theoretical tolerance, density of air under 20 ℃ of temperature during normal pressure
Be 1.205
The substitution formula, the discharge capacity that gets Air compressor is
The delivery duct internal diameter
Choose the pipeline that internal diameter is 0.15m.
Reynolds number
The tube wall relative roughness
In the following formula
Be the absolute roughness of rolling seamless steel pipe tube wall, value 0.05～0.1
The linear loss coefficient curve of pipe flow gets
The crushing ratio
Cement delivery duct total length 400m, wherein levelling pipe length
Be 300m, vertical tube length
Be 20m, tipping tube length
Be 80m (30 ° of level inclinations), 8 at elbow (radius of curvature 0.6m), 135 ° of elbow angles.This system's total yield length is:
In the following formula
Be the vertical tube equivalent length factor, value is 3.
The line pressure loss
Selection work pressure 0.75
, discharge capacity 25 m3/min Air compressor be enough to meet the demands.
During conveying, open pressurized air tube valve 8, pressurized air enters in the concrete ship storehouse by air inlet pipe 2, with the cement fluidization, cement enters delivery pipe 4, opens and helps blowpipe valve 9, and pressurized air enters delivery pipe 4 by helping blowpipe 7, cement in the delivery pipe 4 is replenished kinetic energy, cement is delivered to facilities of mix storied building cementing tank 5.
Embodiment 2: as the prioritization scheme of embodiment 1, select and contain the SA132A Air compressor of company again as compressed air source.This Air compressor operation pressure 0.75
, discharge capacity 25 m3/min, power 132kW.This type Air compressor has the OBD (On-Board Diagnostics) protection by microcomputerized control, clearly indicates and control the running of Air compressor, and functions such as parking guarantee that Air compressor was user security work in 7 * 24 hours continuously, need not special messenger's nurse.The Air compressor core component adopts Sweden SKF bearing, and rotor is done balancing test through dynamic balancer, and balance is good, vibrates for a short time, and noise is low, and has the highest in the world single-stage compression ratio.The Air compressor air-channel system adopts third generation high efficiency screw host, the gas and oil separating plant of German MANN company, and the CKD pressure-modulation valve of special quality imported valve Japan guarantees the high-quality pressure gas of output; Air compressor oil circuit system adopts the impurity of the oil strainer of German MANN company in can reliable filtering lubricating oil, guarantees unobstructed, the lubricated and heat sinking function of oil piping system; The Air compressor cooling system: adopting special quality import cooling vessel, is design premises with the environment of high temperature and high humidity.Adopt low temperature difference design, the temperature rise of water guarantees ≤40 ℃ of Air compressor air outlet temperatures at 6～8 ℃; Air compressor adopts the spiral body of third generation high efficiency, and through German GHH rotor tooth form has been carried out effective improvement, major-minor has changeed employing five teeth to six teeth, to six sub-teeth, improves heat efficiency 10-12%, power saving 25% than domestic common spiral four teeth.
Adopt and contain the SA132A Air compressor again, improved production efficiency, reduced energy consumption, reduced the spending of repair and maintenance.
Embodiment 3: as the prioritization scheme of embodiment 2, reinforcement is to pipe fitting flange, feed hose inspection maintenance, prevent gas leakage, behind the cement end of transmission, timely cleaning connection pipe, and the critical point sealed wrapping prevents owing to have a humid climate or the influence of rainy weather, cause buildup to harden, plugging takes place.
The above technical scheme of comprehensive employing has been brought into play enormous benefits in 100000WDT container berth manufacture process, engineering needs 260,000 m3 concretes need 120,000 tons of cement approximately altogether, 316 yuan/ton of local cement mill explant prices, and 25 yuan/ton of automotive expenses add up to 341 yuan/ton of the valencys of showing up; 280 yuan/ton of cement strange land purchasing prices, 12 yuan/ton of water transports add up to 292 yuan/ton of the valencys of showing up.By water transport, realize the strange land buying, cement per ton can be saved nearly 50 yuan, and whole engineering economy cement purchase cost is more than 5,000,000 yuan.
The above; it only is preferred embodiment of the present utility model; be not to be qualification to the utility model protection domain; so long as employing the technical solution of the utility model; perhaps only be any conventional the modification or equivalent variations that to make by those of ordinary skill in the art, all fall among the utility model scope required for protection.
Claims (5)
1. cement Pneumatic conveyer, comprise Air compressor (1), compressed air tube (2), feed hose (3), delivery pipe (4) and pressurized air tube valve (8), it is characterized in that: described cement Pneumatic conveyer also comprises and helps blowpipe (7), helps blowpipe valve (9), help blowpipe (7) one ends to connect Air compressor (1), help blowpipe (7) other end to connect delivery pipe (4), and delivery pipe (4) length overall is at least 200 meters.
2. cement Pneumatic conveyer according to claim 1 is characterized in that: the free air capacity of Air compressor (1) is at least 25m3/min.
3. cement Pneumatic conveyer according to claim 1 and 2 is characterized in that: delivery pipe (4) internal diameter is 150mm.
4. cement Pneumatic conveyer according to claim 1 and 2 is characterized in that: delivery pipe (4) elbow angle is 135 °.
5. cement Pneumatic conveyer according to claim 3 is characterized in that: delivery pipe (4) elbow angle is 135 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200320637U CN201961839U (en) | 2011-01-30 | 2011-01-30 | Remote cement effort transportation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200320637U CN201961839U (en) | 2011-01-30 | 2011-01-30 | Remote cement effort transportation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201961839U true CN201961839U (en) | 2011-09-07 |
Family
ID=44524373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200320637U Expired - Lifetime CN201961839U (en) | 2011-01-30 | 2011-01-30 | Remote cement effort transportation device |
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|---|---|
| CN (1) | CN201961839U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111912694A (en) * | 2020-07-15 | 2020-11-10 | 杭州谱育科技发展有限公司 | Liquid analysis device and method based on online dilution |
| CN114890175A (en) * | 2022-03-21 | 2022-08-12 | 首钢京唐钢铁联合有限责任公司 | Powder warehousing system |
| CN115087609A (en) * | 2020-01-14 | 2022-09-20 | 马里凯普有限公司 | Method for conveying material in a pneumatic material conveying system and pneumatic material conveying system |
-
2011
- 2011-01-30 CN CN2011200320637U patent/CN201961839U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115087609A (en) * | 2020-01-14 | 2022-09-20 | 马里凯普有限公司 | Method for conveying material in a pneumatic material conveying system and pneumatic material conveying system |
| US11939174B2 (en) | 2020-01-14 | 2024-03-26 | Maricap Oy | Method for conveying material in a pneumatic material conveying system, and pneumatic material conveying system |
| CN111912694A (en) * | 2020-07-15 | 2020-11-10 | 杭州谱育科技发展有限公司 | Liquid analysis device and method based on online dilution |
| CN114890175A (en) * | 2022-03-21 | 2022-08-12 | 首钢京唐钢铁联合有限责任公司 | Powder warehousing system |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110907 |