CN205005612U - System for utilize power plant's temperature drainage to improve warmhouse booth and plant benefit - Google Patents

Abstract

A system for improving the planting efficiency of greenhouses by utilizing the temperature and drainage of power plants. The technical solution is: to install a main temperature and drainage pipe, to introduce the temperature and drainage of the power plant into the greenhouse through the main temperature and drainage pipe, to set heating pipes in the greenhouse, and to arrange heating pipes in rows. The pipes are buried under the ground of the greenhouse. The inlet end of each heating pipe is connected to the main heating and drainage pipe, and the outlet end of each heating pipe is connected to the main drainage pipe. The depth of the heating pipe from the ground is 10-15 cm. The distance between adjacent heating pipes It is 30-50 centimeters; the warm drainage of the power plant flows into the reservoir through the drainage main pipe after releasing heat from the heating pipe, and the water in the reservoir is connected to the irrigation pipe of the greenhouse through the irrigation water pump. The utility model effectively solves the problem of waste of energy and thermal pollution of water bodies caused by thermal power plants built along natural waters and directly discharges warm water drainage back to natural waters. It not only recovers the waste heat of warm water drainage, but also increases the economic benefits of greenhouse planting. It has the advantages of ecological environmental protection and The double value of energy saving and efficiency.

Description

A system for improving the efficiency of greenhouse planting by utilizing the temperature and drainage of power plants

technical field

The utility model relates to a technology for utilizing warm water discharge from a power plant, in particular to a system for introducing warm water drain from a power plant into a greenhouse for heating and irrigation, thereby improving the planting efficiency of the greenhouse.

Background technique

Thermal power plants built along rivers, rivers, and lakes generally adopt an open cooling method, that is, water is directly taken from nearby natural waters, and the exhaust steam discharged from the steam turbine of the power plant is cooled through a condenser, and then the cooling water is directly discharged back to the natural waters . Usually, the discharged cooling water has a temperature rise of about 10°C compared with the previously pumped water, about 30°C, which is called warm drainage. This method of directly using the surrounding natural water sources for unit cooling has the advantages of economy and convenience. However, with a large amount of warm water discharged into natural waters all year round, it will cause serious thermal pollution to the water body, threatening the survival of fish and affecting aquatic life. The growth of plants can easily cause eutrophication of water bodies, which is extremely detrimental to the health of the surrounding ecological environment. Reducing the temperature of heated water when it is discharged back to natural waters is a common goal to be achieved by power plants, environmental protection and other departments. On the other hand, the direct discharge of warm water with residual heat is also a waste of heat energy.

At present, in the process of greenhouse planting in some areas, it is necessary to increase the temperature of the greenhouse by burning fuel during the cold season. Seedlings provide heat sources; there are also methods of using coal-fired boilers or electric heaters to increase the temperature of the greenhouse to meet the planting requirements of an indoor temperature of 20-25°C. The above method consumes a considerable amount of fuel in one winter, plus the depreciation of the boiler system and labor costs. The high heating cost seriously affects the efficiency of greenhouse planting in winter, and has become the main obstacle restricting the sustainable development of greenhouse planting in winter.

Utility model content

The utility model proposes a system for improving the planting efficiency of greenhouses by utilizing the temperature and drainage of power plants. The system can reduce the energy consumption of greenhouses, reduce operating costs, and improve the efficiency of planting while effectively reducing the thermal impact of power plants' temperature and drainage on natural waters. income.

Problem described in the utility model is realized with following technical scheme:

A system for improving the planting efficiency of greenhouses by utilizing the temperature and drainage of power plants. The technical solution is: to install a main temperature and drainage pipe, to introduce the temperature and drainage of the power plant into the greenhouse through the main temperature and drainage pipe, to arrange heating pipes in the greenhouse, and to arrange heating pipes in rows. The pipes are buried under the ground of the greenhouse. The inlet end of each heating pipe is connected to the main heating and drainage pipe, and the outlet end of each heating pipe is connected to the main drainage pipe. The depth of the heating pipe from the ground is 10-15 cm. The distance between adjacent heating pipes The temperature is 30-50 cm; the warm drainage of the power plant flows into the storage tank through the drainage main pipe after the heating pipe releases heat, and the storage tank is connected to the greenhouse irrigation pipeline through the irrigation water pump.

The above-mentioned system for improving the planting efficiency of greenhouses by utilizing the temperature and drainage of the power plant, sets protective bags outside each heating pipe, and fills the space between the heating pipes and the protective bags with a water-retaining agent.

The above-mentioned system for improving the efficiency of greenhouse planting by using the temperature and drainage of the power plant adds a solar temperature supplementary device. The solar heat collector pipe is connected to the hot water storage tank, the inlet section of the heating pipe leads the warm water into the hot water storage tank, the solar heat collector pipe heats up the medium temperature water in the hot water storage tank, and the outlet section of the heat replenishment pipe takes the heated warm water The main temperature inlet and drainage pipe raises the temperature of the warm water discharge into the heating pipe, the inlet section of the heat supplement pipeline is provided with a heat supplement inlet valve, and the outlet section of the heat supplement pipeline is provided with a heat supplement outlet valve.

The above-mentioned system for improving the planting efficiency of greenhouses by using the thermal drainage of the power plant adds a thermal drainage bypass pipe, the inlet of the warm drainage bypass pipe is connected to the warm drainage main pipe, and the outlet of the warm drainage bypass pipe is connected to the reservoir.

In the above-mentioned system for improving the efficiency of greenhouse planting by utilizing the thermal drainage of the power plant, the reservoir is provided with discharge pipes leading to natural waters.

The above-mentioned system for improving the planting efficiency of greenhouses by utilizing the thermal drainage of the power plant, the main thermal drainage pipeline is provided with a main pipeline valve of the thermal drainage, the bypass pipeline of the thermal drainage is provided with a valve of the bypass pipeline of the thermal drainage, and the discharge pipeline is provided with a discharge valve.

The utility model proposes a comprehensive utilization scheme of warm drainage of a power plant. The system introduces warm drainage with waste heat into agricultural greenhouses to provide heat sources for planting greenhouse crops in winter, replacing traditional heating methods such as coal-fired and electric heaters, effectively reducing greenhouse planting costs and improving greenhouse planting benefits. After the waste heat of the warm drainage is utilized, it is collected into the storage tank for storage and used as a water source for crop irrigation. In addition, the installed solar temperature replenishment device can replenish the temperature of the water and water according to the needs; the heating pipe is surrounded by a protective bag, and a water-retaining agent is installed between the heating pipe and the protective bag. The water-retaining agent has good thermal insulation performance while retaining water and fertilizer. , can reduce the temperature difference between day and night in the soil, and promote the growth of plant roots. The utility model not only recycles the waste heat of warm drainage, reduces the heat impact on natural waters, but also increases the economic benefits of greenhouse planting, and has dual values of ecological environmental protection, energy saving and efficiency enhancement.

Description of drawings

Fig. 1 is the schematic diagram of the utility model;

Fig. 2 is the schematic diagram of heating pipe;

Fig. 3 is a schematic diagram of a solar heating device.

The reference numbers in the drawings are as follows: 1. Warm drainage main pipe; 2. Warm drainage pump; 3. Warm drainage bypass pipe; 4. Inlet valve of heating pipeline; 5. Solar heating device; 5-1. Hot water storage box; 5-2, solar collector tube; 6, heat supply pipe outlet valve; 7, warm drainage bypass pipe valve; 8, heating pipe; 9, drainage supervisor; 10, reservoir; 11, discharge pipe; 12, Discharge valve, 13. Irrigation water pump; 14. Irrigation pipeline; 15. Valve of warm drainage main pipeline; 16. Water retaining agent, 17. Protective bag.

detailed description

The utility model utilizes the waste heat of the temperature and drainage of thermal power plants built along the natural waters to increase the economic benefits of greenhouse planting, and at the same time reduces the thermal impact on the natural waters. Referring to Fig. 1, the system includes a main warm drainage pipe 1, a warm drainage pump 2, a heating pipe 8 and a reservoir 11, and the warm drainage pump 2 pumps the warm drainage discharged from the power plant into the main warm drainage pipe, and the main warm drainage pipe Connect the heating pipes installed in the greenhouse. The heating pipes are buried under the ground of the greenhouse. The depth of the heating pipes from the ground is 10-15 cm. The depth of the heating pipes should be moderate. Insulation and affect the heat dissipation effect; the distance between adjacent pipes of the heating pipe can be determined according to the actual planting conditions, usually 30-50 cm. The specific number of pipes set by the heating pipes depends on the actual building area of the greenhouse. The outlet end of the heating pipe is connected to the drainage main pipe 9, and the drainage main pipe is connected to the reservoir outside the greenhouse, and the warm water released by the heating pipe is sent to the reservoir. When the crops in the greenhouse need to be watered, the water storage The water in the pool is pumped into the irrigation pipeline 14 through the irrigation water pump 13 to irrigate the crops in the greenhouse, thereby saving the cost of irrigation water in the greenhouse. The reservoir is also provided with a discharge pipeline 11 leading to natural waters, and the discharge pipeline is provided with a discharge valve 12. When the water in the reservoir is full, a part of the water can be discharged to the natural waters through the discharge pipeline 11, and the discharged water is discharged in the storage tank. The pool has been cooled, thus effectively reducing the thermal impact on the natural waters.

Referring to Fig. 2, each heating pipe is provided with a protective bag 17, and the space between the heating pipe and the protective bag is filled with a water-retaining agent 16, and the protective bag is made of fiber fabric with good air permeability and water permeability and will not leak water-retaining agent particles , the protective bag is closed at both ends. The above-mentioned structure can avoid direct contact between the plant root system and the heating pipe. While the heating pipe is heating the soil, the water-retaining agent and the fertilizer-retaining function can be used to stimulate the growth and development of the crop root system. In particular, the water-retaining agent also has a good heat preservation effect. The water-retaining agent can use the absorbed water to maintain part of the heat generated by the daylight, adjust the temperature at night, reduce the temperature difference between the day and night of the soil, and play a buffer role in the rise and fall of the soil temperature.

Referring to Figure 1 and Figure 3, the system is equipped with a solar heating device 5, which is used for warming the water and drainage in the cold winter season, so as to ensure the planting requirements of 20-25 °C in the greenhouse. The solar temperature replenishing device is arranged in parallel with the warm and drain main pipe. The solar temperature replenishing device includes a solar heat collecting pipe 5-2, a hot water storage tank 5-1 and a heat replenishing pipeline, and several solar heat collecting pipes arranged according to needs are connected to the hot water storage tank. When it is necessary to replenish the temperature of the warm water, the inlet valve 4 of the heat replenishment pipeline is opened, and the inlet section of the heat replenishment pipe introduces the warm water into the hot water storage tank, and the solar collector tube heats up the temperature of the middle temperature drain of the hot water storage tank; then the heat supplement is turned on The pipe outlet valve 6 merges the heated warm drain into the warm drain main pipe to increase the temperature of the warm drain leading into the heating pipe. By adjusting the opening of the outlet valve 6 of the heating pipe, the amount of replenishing water flowing into the warm drainage main pipe can be controlled, so that the warm drainage entering the heating pipe can reach a suitable temperature.

Still referring to Figure 1, a warm drainage bypass pipe 3 is added, the inlet of the warm drainage bypass pipe is connected to the warm drainage main pipe, the outlet of the warm drainage bypass pipe is connected to the reservoir, and the warm drainage bypass pipe is provided with a warm drainage bypass Pipeline valve 7. When there is no need to provide warm water to the greenhouse to raise the temperature, close the warm water main pipe valve 15 and open the warm water bypass pipe valve 7, so that the warm water flows into the reservoir through the warm water bypass pipe to cool down. In addition, when it is necessary to control the flow of warm drainage into the heating pipe, the bypass pipe can be used to divert part of the warm drainage.

Claims (6)

1. the system utilizing power plant's warm water discharge to improve green house planting benefit, it is characterized in that, warm water discharge main pipeline (1) is set, power plant's warm water discharge is introduced green house through warm water discharge main pipeline, heating pad pipe (8) is set in green house, the heating pad pipe set in a row is embedded in green house underground, the arrival end of each heating pad pipe connects warm water discharge main pipeline, the port of export of each heating pad pipe connects drain header (9), heating pad pipe is 10-15 centimetre apart from the ground degree of depth, and the spacing between adjacent heating pad pipe is 30-50 centimetre; Power plant's warm water discharge flows into cistern (10) through drain header after heating pad pipe heat release, and cistern connects green house pouring pipeline (14) through pouring water pump (13).

2. the system utilizing power plant warm water discharge to improve green house planting benefit according to claim 1, is characterized in that: be provided with outside each heating pad pipe and protect bag (17), heating pad pipe and protect between bag and fill water-loss reducer (16).

3. the system utilizing power plant's warm water discharge to improve green house planting benefit according to claim 2, it is characterized in that: set up solar energy and mend warm device (5), solar energy is mended warm device and warm water discharge and is responsible for and is arranged in parallel, solar energy is mended warm device and is comprised solar energy heat collection pipe (5-2), heat storage water tank (5-1) and concurrent heating pipeline, several solar energy heat collection pipe connects heat storage water tank, warm water discharge is introduced heat storage water tank by the inducer of concurrent heating pipeline, solar energy heat collection pipe is by warm water discharge heat temperature raising in heat storage water tank, warm water discharge after heating is imported warm water discharge main pipeline and promotes the warm water discharge temperature passing into heating pad pipe by the outlet section of concurrent heating pipeline, the inducer of concurrent heating pipeline arranges concurrent heating imported valve (4), the outlet section of concurrent heating pipeline arranges concurrent heating outlet valve (6).

4. the system utilizing power plant's warm water discharge to improve green house planting benefit according to claim 3, it is characterized in that: set up warm water discharge bypass duct (3), the arrival end of warm water discharge bypass duct connects warm water discharge supervisor, and the port of export of warm water discharge bypass duct connects cistern.

5. the system utilizing power plant's warm water discharge to improve green house planting benefit according to claim 4, is characterized in that: cistern is provided with the discharge tube (11) leading to natural water area.

6. the system utilizing power plant's warm water discharge to improve green house planting benefit according to claim 5, it is characterized in that: warm water discharge main pipeline is provided with warm water discharge main pipeline valve (15), warm water discharge bypass duct is provided with warm water discharge bypass duct valve (7), and discharge tube is provided with vent valves (12).