CN107631523B - Large-volume concrete cold water supply device - Google Patents
Large-volume concrete cold water supply device Download PDFInfo
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- CN107631523B CN107631523B CN201711078241.8A CN201711078241A CN107631523B CN 107631523 B CN107631523 B CN 107631523B CN 201711078241 A CN201711078241 A CN 201711078241A CN 107631523 B CN107631523 B CN 107631523B
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Abstract
The invention discloses a large-volume concrete cold water supply device, which comprises an evaporator, a condenser, a cooling water pump, a cold water pump, a cooling tower, a buffer water tank and a refrigeration compressor, wherein the evaporator is connected with the condenser; the evaporator, the condenser and the refrigeration compressor are connected; the water outlet end of the evaporator is connected with the water inlet end of the cold water pump and the water inlet end of the buffer water tank respectively; the water outlet end of the buffer water tank is connected with the water inlet end of the evaporator and the water inlet end of the cooling water pump respectively, the water outlet end of the cooling water pump is connected with the water inlet end of the condenser, the water outlet end of the condenser is connected with the water inlet end of the cooling tower, and the water outlet end of the cooling tower is connected with the water inlet end of the cooling water pump. The invention has the advantages of stability, reliability, energy conservation, environmental protection, convenient operation, low cost and the like.
Description
Technical Field
The invention relates to the field of concrete cooling, in particular to a large-volume concrete cold water supply device.
Background
Concrete is a brittle material with a tensile strength theoretically of about 1/7 to 1/13 of the compressive strength. In the process of construction, forming and operation of the large-volume concrete, the large internal and external temperature difference, upper and lower layer temperature difference and foundation temperature difference are easy to generate between the inside and the outside of the concrete due to the influences of the outside environment temperature, the hydration heat of the internal cementing material and the like. Under the conditions of being constrained by the foundation, the concrete itself and the like, large temperature stress is easy to form. When the temperature stress exceeds the tensile strength of the concrete, concrete cracks are generated, and the quality and safety of engineering are affected. Therefore, in the construction process of the large-volume concrete, stricter temperature control measures are required to be adopted, and the internal temperature of the concrete is controlled within a design allowable range in time intervals.
The temperature control of the mass concrete generally adopts measures such as precooling (heating), aftercooling, surface heat preservation and the like. The post-cooling is to pre-embed the pipeline in the concrete, and the pipeline is filled with cold water to control the temperature of the concrete, which is generally divided into a first stage, a middle stage, a second stage and a third stage. Before nineties of the twentieth century, post-cooling of bulk concrete has generally employed centralized cold water stations for the production of cold water. And because of the improvement of the refrigeration equipment and the post-cooling technology, the prior post-cooling of mass concrete generally adopts a movable cold water station for cold water production.
In areas with higher winter temperature, the cold water station used at present can better meet the cold water supply requirement of mass concrete. In the western alpine region, the average temperature in winter is generally below 0 ℃, chilled water is not needed, and natural water after purification treatment is generally adopted for cooling. However, the external temperature is too low, the cold water temperature is not easy to control, the fluctuation range is large, and the water supply pipeline is easy to freeze and crack, so that the cooling is interrupted, and the quality of concrete is seriously affected. In addition, because the refrigeration equipment is not easy to start, the natural water can only be directly discharged after the temperature of the natural water is increased, and the waste is large.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects of the prior art and providing the large-volume concrete cold water supply device which is stable, reliable, energy-saving, environment-friendly, convenient to operate and low in cost.
In order to solve the technical problems, the invention adopts the following technical scheme:
a large-volume concrete cold water supply device comprises an evaporator, a condenser, a cooling water pump, a cold water pump, a cooling tower, a buffer water tank and a refrigeration compressor; the evaporator, the condenser and the refrigeration compressor are connected;
the water outlet end of the evaporator is connected with the water inlet end of the cold water pump and the water inlet end of the buffer water tank respectively after passing through the mass concrete, and the water outlet end of the cold water pump is connected with the water inlet end of the evaporator; the water outlet end of the buffer water tank is respectively connected with the water inlet end of the evaporator and the water inlet end of the cooling water pump, the water outlet end of the cooling water pump is connected with the water inlet end of the condenser, the water outlet end of the condenser is connected with the water inlet end of the cooling tower, and the water outlet end of the cooling tower is connected with the water inlet end of the cooling water pump.
As a further improvement to the above technical solution:
the mass concrete cold water supply device further comprises a water supplementing pump, wherein the water inlet end of the water supplementing pump is connected with the water outlet end of the buffer water tank, and the water outlet end of the water supplementing pump is connected with the water inlet end of the evaporator.
The water outlet end and the water inlet end of the evaporator are respectively provided with an evaporator water outlet pipe and an evaporator water inlet pipe, and one side of the evaporator water outlet pipe and one side of the evaporator water inlet pipe, which are close to the evaporator, are respectively provided with an evaporator water outlet valve and an evaporator water inlet valve.
And a bypass pipe is connected between the evaporator water outlet pipe and the evaporator water inlet pipe at one side far away from the evaporator, and a bypass valve is arranged on the bypass pipe.
The water outlet end and the water inlet end of the condenser are respectively provided with a condenser water outlet pipe and a condenser water inlet pipe, and one side of the condenser water outlet pipe and one side of the condenser water inlet pipe, which are close to the condenser, are respectively provided with a condenser water outlet valve and a condenser water inlet valve.
And a switching pipe is connected between the condenser water outlet pipe and the condenser water inlet pipe at one side close to the water outlet end of the cooling water pump, and a switching valve is arranged on the switching pipe.
The water outlet end of the cooling tower is provided with a cooling tower water outlet pipe, and one side of the cooling tower water outlet pipe, which is close to the water inlet end of the cooling water pump, is provided with a cooling tower water outlet valve.
The water inlet end of the cold water pump is provided with a water return pipe, one side, close to the water outlet end of the cooling tower, between the water return pipe and the water outlet pipe of the cooling tower is connected with a communicating pipe, and a communicating valve is arranged on the communicating pipe.
The water outlet end of the buffer water tank is provided with a buffer water tank water outlet pipe, and the buffer water tank water outlet pipe is provided with a buffer water tank water outlet valve.
A buffer water tank water inlet pipe is arranged at the water inlet end of the buffer water tank, and an electromagnetic valve is arranged on the buffer water tank water inlet pipe; the water return pipe is provided with a temperature sensor which is connected with the electromagnetic valve and controls the opening and closing of the electromagnetic valve.
Compared with the prior art, the invention has the advantages that:
the large-volume concrete cold water supply device can meet the cold water demand in summer and ensure the cold water demand in winter in large-volume concrete pouring in alpine regions, and has the advantages of simple and convenient operation, stable and controllable cold water temperature, environmental protection, energy saving and stable and reliable equipment operation.
Drawings
Fig. 1 is a schematic diagram of the structure of the present invention.
Fig. 2 is a schematic structural view of the mass concrete cold water supply apparatus of the present invention in a summer mode of operation.
Fig. 3 is a schematic structural view of the mass concrete cold water supply apparatus of the present invention in a winter mode of operation.
The reference numerals in the drawings denote:
1. an evaporator; 11. an evaporator outlet pipe; 111. an evaporator outlet valve; 12. an evaporator water inlet pipe; 121. inlet valve of evaporator; 2. a condenser; 21. a condenser outlet pipe; 211. a condenser outlet valve; 22. a condenser inlet pipe; 221. a condenser inlet valve; 3. a cooling water pump; 31. switching the tube; 311. a switching valve; 4. a cold water pump; 41. a bypass pipe; 411. a bypass valve; 42. a water return pipe; 423. a temperature sensor; 43. a communicating pipe; 431. a communication valve; 5. a cooling tower; 51. a water outlet pipe of the cooling tower; 511. a water outlet valve of the cooling tower; 6. a water supplementing pump; 61. a water outlet pipe of the water supplementing pump; 62. a water inlet pipe of the water supplementing pump; 7. a buffer water tank; 71. a water outlet pipe of the buffer water tank; 711. buffer water tank water outlet valve; 72. a buffer water tank water inlet pipe; 722. an electromagnetic valve; 8. a refrigeration compressor; 9. mass concrete.
Detailed Description
The invention will be described in further detail with reference to the drawings and the specific examples.
As shown in fig. 1, a mass concrete cold water supply apparatus of the present invention includes an evaporator 1, a condenser 2, a cooling water pump 3, a cold water pump 4, a cooling tower 5, a buffer water tank 7, and a refrigerating compressor 8; the evaporator 1, the condenser 2 and the refrigeration compressor 8 are connected;
the water outlet end of the evaporator 1 is respectively connected with the water inlet end of the cold water pump 4 and the water inlet end of the buffer water tank 7 after passing through the mass concrete 9, and the water outlet end of the cold water pump 4 is connected with the water inlet end of the evaporator 1; the water outlet end of the buffer water tank 7 is respectively connected with the water inlet end of the evaporator 1 and the water inlet end of the cooling water pump 3, the water outlet end of the cooling water pump 3 is connected with the water inlet end of the condenser 2, the water outlet end of the condenser 2 is connected with the water inlet end of the cooling tower 5, and the water outlet end of the cooling tower 5 is connected with the water inlet end of the cooling water pump 3.
The large-volume concrete cold water supply device can meet the cold water demand in summer and ensure the cold water demand in winter in large-volume concrete pouring in alpine regions, and has the advantages of simple and convenient operation, stable and controllable cold water temperature, environmental protection, energy saving and stable and reliable equipment operation.
The mass concrete cold water supply device further comprises a water supplementing pump 6, the water inlet end of the water supplementing pump 6 is connected with the water outlet end of the buffer water tank 7, and the water outlet end of the water supplementing pump 6 is connected with the water inlet end of the evaporator 1.
The water outlet end and the water inlet end of the evaporator 1 are respectively provided with an evaporator water outlet pipe 11 and an evaporator water inlet pipe 12, and the evaporator water outlet pipe 11 and the evaporator water inlet pipe 12 are respectively provided with an evaporator water outlet valve 111 and an evaporator water inlet valve 121 on one side close to the evaporator 1.
A bypass pipe 41 is connected between the evaporator outlet pipe 11 and the evaporator inlet pipe 12 on the side far from the evaporator 1, and a bypass valve 411 is arranged on the bypass pipe 41.
The water outlet end and the water inlet end of the condenser 2 are respectively provided with a condenser water outlet pipe 21 and a condenser water inlet pipe 22, and the condenser water outlet pipe 21 and the condenser water inlet pipe 22 are respectively provided with a condenser water outlet valve 211 and a condenser water inlet valve 221 on one side close to the condenser 2.
A switching pipe 31 is connected between the condenser water outlet pipe 21 and the condenser water inlet pipe 22 at the side close to the water outlet end of the cooling water pump 3, and a switching valve 311 is arranged on the switching pipe 31.
The water outlet end of the cooling tower 5 is provided with a cooling tower water outlet pipe 51, and the cooling tower water outlet pipe 51 is provided with a cooling tower water outlet valve 511 at one side close to the water inlet end of the cooling water pump 3.
The water inlet end of the cold water pump 4 is provided with a water return pipe 42, a communicating pipe 43 is connected between the water return pipe 42 and the water outlet pipe 51 of the cooling tower at one side close to the water outlet end of the cooling tower 5, and a communicating valve 431 is arranged on the communicating pipe 43.
The water outlet end of the buffer water tank 7 is provided with a buffer water tank outlet pipe 71, and the buffer water tank outlet pipe 71 is provided with a buffer water tank outlet valve 711.
A buffer water tank water inlet pipe 72 is arranged at the water inlet end of the buffer water tank 7, and an electromagnetic valve 722 is arranged on the buffer water tank water inlet pipe 72; the water return pipe 42 is provided with a temperature sensor 423, and the temperature sensor 423 is connected with the electromagnetic valve 722 and controls the opening and closing of the electromagnetic valve 722.
The water outlet end and the water inlet end of the water supplementing pump 6 are respectively provided with a water supplementing pump water outlet pipe 61 and a water supplementing pump water inlet pipe 62, and the water supplementing pump water outlet pipe 61 and the water supplementing pump water inlet pipe 62 are respectively connected with a buffer water tank water outlet pipe 71 and the evaporator water inlet pipe 12.
The mass concrete cold water supply device of the present invention has two modes of operation.
Summer mode: the cold water cycle and the cooling water cycle operate relatively independently.
The evaporator outlet valve 111, the evaporator inlet valve 121, the condenser outlet valve 211, the condenser inlet valve 221, and the cooling tower outlet valve 511 are opened, and the switching valve 311, the bypass valve 411, the communication valve 431, the solenoid valve 722, and the buffer tank outlet valve 711 are closed.
As shown in fig. 2, the cold water circulates: cold water enters the mass concrete 9 through the evaporator water outlet pipe 11 after being cooled by the evaporator 1, the evaporator water outlet pipe 11 passes through the mass concrete 9, the temperature of the cold water rises after heat exchange with the mass concrete 9, the cold water flows out through the water return pipe 42, is pressurized by the cold water pump 4, and enters the evaporator 1 again for cooling;
the water is supplemented by the water supplementing pump 6 and the buffer water tank 7. To supplement the small loss of cold water in the mass concrete 9, the buffer water tank 7 supplies the supplementing water, the supplementing water enters the supplementing water pump 6 through the supplementing water pump water inlet pipe 62 and then is supplemented into the evaporator water inlet pipe 12 through the supplementing water pump water outlet pipe 61, and the water in the buffer water tank 7 is supplemented by the outside. The heat absorbed in the evaporator 1 is led via a refrigeration compressor 8 into the condenser 2.
And (3) cooling water circulation: cooling water removes heat from the condenser 2, enters the cooling tower 5 through the condenser water outlet pipe 21, releases heat to the atmosphere in the cooling tower 5, enters the cooling water pump 3 through the cooling tower water outlet pipe 51 after the cooling water temperature is reduced, is pressurized by the cooling water pump 3, and then reenters the condenser 2 through the condenser water inlet pipe 22 to absorb heat.
Winter mode: the cold water circulation and the cooling water circulation are operated in opposite communication.
The evaporator outlet valve 111, the evaporator inlet valve 121, the condenser outlet valve 211, the condenser inlet valve 221, and the cooling tower outlet valve 511 are closed, and the switching valve 311, the bypass valve 411, the communication valve 431, the solenoid valve 722, and the buffer tank outlet valve 711 are opened. The winter mode does not require the evaporator 1 and the condenser 2 to be involved in operation.
As shown in fig. 3, the cold water circulates: cold water flows out of the bulk concrete 9, a portion of which flows into the cold water pump 4 via the return pipe 42, is pressurized by the cold water pump 3, flows into the bypass pipe 41 via the evaporator inlet pipe 12, and then flows into the bulk concrete 9 via the evaporator outlet pipe 11.
And (3) cooling water circulation: cold water flows out of the mass concrete 9, the temperature rises, the temperature sensor 423 senses, the opening degree of the electromagnetic valve 722 is controlled, the opening degree of the electromagnetic valve 722 is in direct proportion to the temperature sensed by the temperature sensor 423, a part of cold water flows into the buffer water tank 7 through the buffer water tank water inlet pipe 72, enters the cooling water pump 3 through the buffer water tank water outlet pipe 71, enters the switching pipe 31 through the condenser water inlet pipe 22 after being pressurized by the cooling water pump 3, enters the cooling tower 5 through the condenser water outlet pipe 21, releases heat to the atmosphere in the cooling tower 5, enters the communicating pipe 43 through the cooling tower water outlet pipe 51 after being cooled, merges with cold water in the water return pipe 42, enters the cooling water pump 4 to be pressurized, and then enters the mass concrete 9 through the evaporator water inlet pipe 12, the bypass pipe 41 and the evaporator water outlet pipe 11 in sequence.
While the invention has been described with reference to preferred embodiments, it is not intended to be limiting. Many possible variations and modifications of the disclosed technology can be made by anyone skilled in the art, or equivalent embodiments with equivalent variations can be made, without departing from the scope of the invention. Therefore, any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present invention shall fall within the scope of the technical solution of the present invention.
Claims (1)
1. A mass concrete cold water supply device, characterized in that: the device comprises an evaporator (1), a condenser (2), a cooling water pump (3), a cooling water pump (4), a cooling tower (5), a buffer water tank (7) and a refrigeration compressor (8); the evaporator (1), the condenser (2) and the refrigeration compressor (8) are connected;
the water outlet end of the evaporator (1) is respectively connected with the water inlet end of the cold water pump (4) and the water inlet end of the buffer water tank (7), and the water outlet end of the cold water pump (4) is connected with the water inlet end of the evaporator (1); the water outlet end of the buffer water tank (7) is respectively connected with the water inlet end of the evaporator (1) and the water inlet end of the cooling water pump (3), the water outlet end of the cooling water pump (3) is connected with the water inlet end of the condenser (2), the water outlet end of the condenser (2) is connected with the water inlet end of the cooling tower (5), and the water outlet end of the cooling tower (5) is connected with the water inlet end of the cooling water pump (3);
the large-volume concrete cold water supply device further comprises a water supplementing pump (6), wherein the water inlet end of the water supplementing pump (6) is connected with the water outlet end of the buffer water tank (7), and the water outlet end of the water supplementing pump (6) is connected with the water inlet end of the evaporator (1);
the water outlet end and the water inlet end of the evaporator (1) are respectively provided with an evaporator water outlet pipe (11) and an evaporator water inlet pipe (12), and the evaporator water outlet pipe (11) and the evaporator water inlet pipe (12) are respectively provided with an evaporator water outlet valve (111) and an evaporator water inlet valve (121) on one side close to the evaporator (1);
a bypass pipe (41) is connected between the evaporator water outlet pipe (11) and the evaporator water inlet pipe (12) at one side far away from the evaporator (1), and a bypass valve (411) is arranged on the bypass pipe (41);
the water outlet end and the water inlet end of the condenser (2) are respectively provided with a condenser water outlet pipe (21) and a condenser water inlet pipe (22), and the condenser water outlet pipe (21) and the condenser water inlet pipe (22) are respectively provided with a condenser water outlet valve (211) and a condenser water inlet valve (221) on one side close to the condenser (2);
a switching pipe (31) is connected between the condenser water outlet pipe (21) and the condenser water inlet pipe (22) at one side close to the water outlet end of the cooling water pump (3), and a switching valve (311) is arranged on the switching pipe (31);
a cooling tower water outlet pipe (51) is arranged at the water outlet end of the cooling tower (5), and a cooling tower water outlet valve (511) is arranged at one side of the cooling tower water outlet pipe (51) close to the water inlet end of the cooling water pump (3);
a water inlet end of the cold water pump (4) is provided with a water return pipe (42), a communicating pipe (43) is connected between the water return pipe (42) and a water outlet pipe (51) of the cooling tower at one side close to the water outlet end of the cooling tower (5), and a communicating valve (431) is arranged on the communicating pipe (43);
a water outlet end of the buffer water tank (7) is provided with a buffer water tank water outlet pipe (71), and the buffer water tank water outlet pipe (71) is provided with a buffer water tank water outlet valve (711);
a buffer water tank water inlet pipe (72) is arranged at the water inlet end of the buffer water tank (7), and an electromagnetic valve (722) is arranged on the buffer water tank water inlet pipe (72); a temperature sensor (423) is arranged on the water return pipe (42), and the temperature sensor (423) is connected with the electromagnetic valve (722) and controls the opening and closing of the electromagnetic valve (722);
the large-volume concrete cold water supply device has two operation modes of summer and winter, and in the winter mode, an evaporator water outlet valve (111), an evaporator water inlet valve (121), a condenser water outlet valve (211), a condenser water inlet valve (221) and a cooling tower water outlet valve (511) are closed, and a switching valve (311), a bypass valve (411), a communication valve (431), an electromagnetic valve (722) and a buffer water tank water outlet valve (711) are opened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711078241.8A CN107631523B (en) | 2017-11-06 | 2017-11-06 | Large-volume concrete cold water supply device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711078241.8A CN107631523B (en) | 2017-11-06 | 2017-11-06 | Large-volume concrete cold water supply device |
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| CN107631523A CN107631523A (en) | 2018-01-26 |
| CN107631523B true CN107631523B (en) | 2023-06-06 |
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| CN201711078241.8A Active CN107631523B (en) | 2017-11-06 | 2017-11-06 | Large-volume concrete cold water supply device |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1265349A (en) * | 2000-03-31 | 2000-09-06 | 长江水利委员会长江勘测规划设计研究院 | Pre-cooling and twice wind cooling process for concrete aggregate |
| CN2733263Y (en) * | 2004-10-20 | 2005-10-12 | 杭州华电华源环境工程有限公司 | Mobile cold water station |
| JP2011227829A (en) * | 2010-04-22 | 2011-11-10 | Fujikura Ltd | Cooling system for data center |
| CN203501386U (en) * | 2013-09-24 | 2014-03-26 | 广州三晶电气有限公司 | Frequency conversion driving system of central air conditioner |
| CN205935692U (en) * | 2016-08-19 | 2017-02-08 | 中国水利水电第五工程局有限公司 | Multiloop switching -over concrete cooling device |
| CN107227857A (en) * | 2017-07-28 | 2017-10-03 | 中国水利水电科学研究院 | Concrete cooling regulator control system and concrete cooling regulation and control method |
| CN207422731U (en) * | 2017-11-06 | 2018-05-29 | 中国水利水电第八工程局有限公司 | A kind of mass concrete cold feed device |
-
2017
- 2017-11-06 CN CN201711078241.8A patent/CN107631523B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1265349A (en) * | 2000-03-31 | 2000-09-06 | 长江水利委员会长江勘测规划设计研究院 | Pre-cooling and twice wind cooling process for concrete aggregate |
| CN2733263Y (en) * | 2004-10-20 | 2005-10-12 | 杭州华电华源环境工程有限公司 | Mobile cold water station |
| JP2011227829A (en) * | 2010-04-22 | 2011-11-10 | Fujikura Ltd | Cooling system for data center |
| CN203501386U (en) * | 2013-09-24 | 2014-03-26 | 广州三晶电气有限公司 | Frequency conversion driving system of central air conditioner |
| CN205935692U (en) * | 2016-08-19 | 2017-02-08 | 中国水利水电第五工程局有限公司 | Multiloop switching -over concrete cooling device |
| CN107227857A (en) * | 2017-07-28 | 2017-10-03 | 中国水利水电科学研究院 | Concrete cooling regulator control system and concrete cooling regulation and control method |
| CN207422731U (en) * | 2017-11-06 | 2018-05-29 | 中国水利水电第八工程局有限公司 | A kind of mass concrete cold feed device |
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