Technical scheme of greenhouse construction

1, main structure:

WJL9.6-4.0 hollow solar panel greenhouse.

2. Performance indicators:

2. 1) wind pressure: 0.6 KN∕㎡.

2.2) Snow load: 0.5 KN∕㎡

2.3) Suspension load:15kg ∕.

2.4) Maximum rainfall:140mm ∕ h

2.5) power parameters: 220v, 50hz, ph 1 ∕ 380v, 50hz, ph3.

3. Specifications and dimensions:

3. 1) Building width: 9.6m

3.2) Building distance: 4m

3.3) Gutter (height from the bottom of rainwater tank to the bottom of column): 4.0m

3.4) Top height (height from roof to column bottom): 4.78m.

3.5) Roof angle: 22 degrees.

4. Arrangement:

4. 1) The direction of greenhouse roof is east-west.

4.2) Gable length (east-west): 9.6m× 7 (span number) = 67.2m.

4.3) Side wall length (north and south): 4.0 m× 12 (number of bays) =48m.

4.4) Total area: 3225.6m?

5. Structure and covering materials:

The main frame of greenhouse adopts domestic hot-dip galvanized steel pipe and steel plate.

Mainly includes:

The main column is 100×50×2.5, the upper and lower chords of the hot-dip galvanized rectangular pipe grid are made of 50×50 rectangular pipes, and the web members are welded with 30 angle steel. A rectangle with 50*30*2 or 50*50*2 beams around it. The rainwater tank is galvanized sheet with a thickness of 2.0mm, and the specifications for hot galvanizing of parts are GB∕T309 1-93.

The top and periphery of the greenhouse are covered with domestic high-quality 8mm solar panels.

6. Doors and greenhouse foundations:

6. 1) door:

The greenhouse * * * is equipped with two aluminum alloy sliding doors, the location of which shall be negotiated by Party A ... 6.2) Foundation:

The greenhouse foundation is 1.2m deep, and C25 concrete is poured on site (it can be adjusted according to the local address). The inside of the greenhouse is a point foundation, and the surrounding is a strip foundation. The ring beam is poured on site to improve the overall strength of the greenhouse.

A circle of 150 apron slope with a thickness of 10 cm, a width of 0.8 m and a slope of 4% should be made around the greenhouse to prevent the foundation from being directly washed away.

There is a 0.5-meter-high dado around the greenhouse. (The civil part is not included in the quotation)

7. Greenhouse roof and drainage

This type of intelligent greenhouse is a one-span three-tower structure, and the greenhouse is equipped with single-ended drainage with a slope of 2.5‰.

Second, the greenhouse foundation construction

Referring to the drawings provided by Party B, Party A will build it by itself.

Third, the external and internal shading system.

1. External sunshade system

In summer, the external shading system blocks out the excess sunlight to form a shade, which protects the flower crops in the greenhouse from strong light and creates a suitable growth environment for the crops. Shading curtain can control indoor humidity, keep proper heat level, make sunlight spread to greenhouse planting area, and maintain the best crop growth environment.

Technical performance of 1. 1

Travel (meters)

4.20

Running speed (m∕min)

0.29

One-way running time (minutes)

14.47

Power supply (three-phase ∕hz)

380 volts

Motor power (kW)

0.55

Basic composition of 1.2 system

1) External sunshade frame:

Two groups of external sunshade skeletons are installed at the top of the greenhouse, with 50*50*2 as columns, 40 * 40 * 2 and 40 * 40 * 2 galvanized square pipes as connecting rods, and multi-span buildings are combined with galvanized square pipes and connectors to form a grid structure. The support is reliable in strength and beautiful in appearance.

2) Rotating mechanism:

The domestic rack rotating mechanism is adopted, and the power is output through the transmission shaft connected with the reduction motor.

The transmission shaft adopts φ 32× 3.0 hot-dip galvanized rectangular steel pipe, the middle part is connected with the motor, and the rest racks are connected evenly; The push-pull mechanism adopts the horizontal arrangement of hot-dip galvanized parts to pull the curtain surface to open and close, so that the curtain is flat and beautiful in operation.

3) Curtain line:

The double-layer cord adopts domestic black polyester cord.

4) Control part:

The control box is equipped with two sets of curtain opening and closing contactors, which can be opened and closed manually, stopped automatically through the travel switch, and controlled by computer.

5) Curtains:

Select the high-quality black curtain produced by Green Park Group, and the shading rate is 70%.

6) control partition:

The number of shading control areas is equal to the planting proportion of the greenhouse, and the shading system outside the greenhouse is divided into two control areas.

2. Internal sunshade system (rack rotation)

Inner sunshade system can improve the ecological environment of greenhouse in many ways. In summer, the sunshade curtain can reflect part of the sunlight, diffuse the sunlight into the greenhouse, evenly irradiate the plants, protect the plants from being burned by the gun barrel, and reduce the greenhouse temperature by 4-6℃; By choosing different curtains, different shading rates can be formed to meet the needs of different crops for sunlight; At night in winter, the internal sunshade and thermal insulation system can effectively prevent infrared rays from escaping, reduce ground radiation heat loss, reduce heat energy consumption and greatly reduce greenhouse operation cost.

engineering data

Motor model:

DWPSV63- 1 (made in China)

Travel (meters)

4.20

Running speed (m∕min)

0.29

One-way running time (minutes)

14.47

Power supply (three-phase ∕hz)

380 volts

Motor power (kW)

0.55

2. 1 Basic system composition

2. 1. 1) Control box and power supply

The box can flexibly control the opening, closing and stopping of the awning. When shading is controlled by computer, the electric control box is equipped with a change-over switch, which can realize automatic and manual (electric) operations, and the operation is flexible and changeable. The motor comes with working optical fiber and safety limit, which makes the action safe and reliable.

.2.1.2) rack pair

Adopt imported/domestic rack pair, the product quality is reliable and the operation is stable.

2. 1.3) transmission part

The transmission part is composed of a reduction motor and a supporting part, and the power is output through a transmission shaft connected with the reduction motor.

The transmission shaft is made of φ 32 * 3.0 hot-dip galvanized steel pipe, the middle part is connected with the motor, and the rest is connected with the rack pair/rack seat evenly, which transforms the circular motion into a smooth linear motion.

The push-pull rod is φ 25× 2 1.7 galvanized steel pipe, and each rack is connected with 1 column, and the longitudinal length is basically the same as that of the greenhouse. The driving curtain rod connected with the push-pull rod is made of aluminum profile, which is horizontally arranged to pull the curtain to open and close, so that the curtain is flat and beautiful when operating.

2. 1.4) Curtain line

The curtain line is made of transparent polyester made in China,

This greenhouse is controlled independently in three areas.

The curtain is ASN65 aluminum thermal insulation sunshade curtain produced by Green Garden Group Company.

Fourth, natural ventilation system.

The top adopts electric window opening system and is equipped with rack-and-pinion electric window opening ventilation structure, which realizes window opening at the top, makes convection inside and outside the greenhouse, and achieves the effect of dehumidification and cooling. A swing arm window opening motor is arranged in the corridor to facilitate the ventilation of wet curtains. The greenhouse adopts unilateral track window opening, and the specifications are 1 m×4 m∕ fan and *** 126 fan.

1, working principle:

Transmission machinery: gear rod transmission, single-sided track window opening of each spire at the top of greenhouse. Press the start switch button of the control box, the motor starts, the motor drives the transmission shaft to run through the transmission mechanism, and the transmission shaft drives the gear to move through the connecting piece. When the sunroof is opened in place, the travel limit switch will be triggered, the motor will stop and the travel operation will end.

The control box is equipped with manual control. If you need to stop halfway, you can press the stop button to stop running at the required position.

2. The basic components of the system:

The system includes special motor for greenhouse control box, transmission part, travel limit switch and other parts.

2. 1) power supply: 380V, 50HZ.

2.2) Power of power supply motor: 0.55KW, * * * 2 The motor needs to be windowed, which is a domestic high-quality product.

2.3) reduction ratio: 1:500

2.4) Output speed: 2.8 rpm.

Technical parameters of gear pair:

2.5) Modulus: 4

2.6) Material: Q235A galvanized for corrosion protection.

2.7) Structure: rack and pinion.

2.8) The skylight is divided into two independent control areas, which can be controlled separately, which is beneficial to practicality.

Verb (abbreviation of verb) wet curtain/fan cooling system

1. Working principle:

The wet curtain/fan cooling system uses the evaporative cooling principle of water to achieve the purpose of cooling. The system adopts domestic high-quality wet curtain, water pump system and domestic high-quality high-volume fan.

The core of the cooling system is a wet curtain that can evaporate water, and the wet curtain is made of corrugated fiber paper. Due to the addition of special chemical components in raw materials, it is corrosion-resistant and has long service life. The special water delivery wet curtain can ensure that the whole cooling wet curtain is evenly soaked by water. When the air permeates through the wet curtain medium, the moisture exchange with the surface of the wet medium transforms the moist heat of the air into latent heat of vaporization, thus humidifying and cooling the air.

Wet curtains are generally installed in the corridor of the greenhouse, and fans are installed at both ends of the greenhouse. When the temperature needs to be lowered, the fan is started to forcibly extract the air in the greenhouse to generate negative pressure; At the same time, the water pump hits the opposite wet curtain wall. When outdoor air is sucked into the room by negative pressure, it passes through the gap of the wet curtain at a certain speed, causing moisture evaporation and cooling. Cold air flows through the greenhouse, absorbs indoor heat, and then is exhausted by the fan, thus achieving the purpose of cooling down.

The system adopts aluminum alloy frame, which has the characteristics of beautiful appearance and small thermal deformation.

2. Basic configuration

Wet curtain: height 1.5m, length 1 15.2 m,

Comprise an aluminum alloy frame.

Under the condition of good maintenance, the service life reaches 5- 10 years.

Water pumps: 4 sets, with the motor power of 0.75w∕.

Water supply device: 4 sets

Fan: 24 sets, with overall dimensions of 1380× 1380×405.

The exhaust air volume is about 40000m? ∕ Taiwan, power consumption 1. 1kw∕ Taiwan.

Inverted window sealing strip.

Six, greenhouse heating system

1, parameters and calculation:

The inlet and outlet temperature of hot water is t 1 = 90℃, and the indoor design temperature is based on the requirements of different functional areas. Check the local outdoor weather and meteorological parameters in GBJ 19-87 Code for Design of Heating, Ventilation and Air Conditioning.

According to the design requirements of outdoor heating temperature-17℃ and indoor temperature-0/5℃, the heat load is calculated.

2. Description of heating (pipeline)

2. 1) adopts a double-tube process with the same program.

2.2) Adopt circular airfoil radiator.

2.3) Radiator tubes are placed in two rows on both sides of the column and connected with 42 hot-dip galvanized tubes. The main water pipe that is welded to ensure no leakage is located in the heating ditch in the middle of the greenhouse, and the outlet needs to be reserved. Party B takes the pipeline out of the greenhouse for 0.5m, and Party A configures it by itself.

2.4) Two rows of heating pipes are arranged around the greenhouse.

Seven, power distribution system

According to the requirements of greenhouse work, control skylight motor, internal and external curtain motor, everting window, fan, wet curtain and water pump.

1. Wiring design:

1. 1) Moisture-proof RVV plastic sleeve is used in the greenhouse, and the socket is waterproof and moisture-proof.

1.2) In order to make the greenhouse beautiful, the wiring is all through pipes.

1.3) Set the grounding electrode as required and lead the grounding wire to the required position.

1.4) includes all power lines, control lines, sensor signals and other wires and electrical installation dressings in the greenhouse.

2. System description:

The power consumption of the greenhouse is not less than 42KW, and it is equipped with two high-voltage control cabinets. The transformer and other components shall be the responsibility of the user, and the main power cord (three-phase and four-wire) shall be connected to the electric control box of the greenhouse (the voltage fluctuation shall not exceed 10%). We are responsible for internal components and wiring.

3. Basic materials:

The materials in the greenhouse mainly include electric control box, various insulated wires and cables, cable ties of various specifications, electric conduits, waterproof and splash-proof sockets, corner joints, waterproof tapes, tee joints, tee joints, gaskets, C-tubes and cable joints. All wires and cables are made of copper-core national standard products, and all electrical components in the electric cabinet are made of domestic famous brand products.

4. The main power loads of the greenhouse are as follows:

(1) sunroof motor (3p):0.75 kw/ set × 1 set = 0.75k

(2) The motor (3P) for eversion window is 0.37kW/set× 2 sets = 0.74kW

(3) Wet curtain pump (3p):0.75 kw/ set× 2 sets =1.5kW..

(4) Fan (3p): 1. 1kW/ x14 =16.4kw.

(5) External sunshade motor (3P):=0.75KW/ set×1set = 0.75 kw.

(6) internal sunshade motor (3P):=0.75KW/ set×1set = 0.75 kw.

(7) Electronic control system: 3KW

Total: 24KW

Engineering cases of the company in recent two years (completed)

20 10 year -20 1 1 year

* Zigong Agricultural Base in Sichuan, with a construction area of 10000 m2.

* Zhejiang Jiaxing Flower and Bird Harbor Fishery Base, with a construction area of over 8,000 square meters.

* Green agriculture in Shaoxing, Zhejiang, with a building area of15000m2.

* Zhuozi greenhouse vegetable production base in Inner Mongolia, with a construction area of 3,400 square meters.

* Greenhouse vegetable production base in He Lin, Shaanxi, with a building area of 3,600 square meters.

* The greenhouse vegetable production base in Dongying, Shandong Province, with a construction area of 20 16 square meters.

Shouguang Dexin Agricultural Science and Technology Co., Ltd. is located in Shouguang, Shandong, which is known as the "hometown of vegetables". Shouguang Vegetable High-tech Demonstration Park, located in the north, was established in 2008 with a total investment of 5 million yuan and 226 employees.

Our company is a high-tech enterprise specializing in greenhouse engineering research and design, installation and construction, vegetable planting and sales, and technical guidance services. The company has more than 50 technical experts, more than 60 sets of various construction equipment and more than 200 professional construction teams. Both the design and construction in the early stage of greenhouse construction and the vegetable planting technology management service system in the later stage are at the leading level in the same industry. At present, the company is participating in the development of ISO9000 quality system certification in the industry.

Since its establishment, the company has established more than 30 bases in Shouguang, Gaoqing, Zibo, Ningyang, Tai 'an, Yulin, Shaanxi, Chifeng, Inner Mongolia, Baoding, Hebei, Harbin, Pizhou, Anhui, Suzhou, Guyang, Ningxia, Jincheng, Shanxi, Taiyuan, Yangquan and other provinces and cities, with strong technical force. ...