CN102246669A - Three-stringed high-daylighting sunlight energy-saving greenhouse - Google Patents

Abstract

The invention relates to a three-string high daylight sunlight energy-saving greenhouse. The greenhouse includes: soil below the horizon of the interior, front and rear roof coverings, arches supported under both roof coverings, walls, wall foundations connected below the horizon to the bottom of the walls to support the walls, supports below the wall foundations The anti-collapse foundation; among them, the arch frame includes: the upper string, the lower string, and the three strings made of steel bars; Has a sloped portion tangent to the upper convex arc portion of the upper chord, located above the top of the upper convex arc portion of the upper chord, and its lower portion is connected to the top of the upper convex arc portion of the upper chord, and its upper portion is located on the upper convex arc of the upper chord Above the connecting line between the surface part and the inclined part; the top of the wall is connected to the lower end of the upper convex arc part of the upper and lower chords, and the lower end of the inclined part to support and fix the upper and lower chords. The invention can increase the elevation angle of the top of the greenhouse arch.

Description

Sanxian High Daylighting Solar Energy-saving Greenhouse

technical field

The invention relates to the field of greenhouse structures, in particular to a three-string high-light daylight energy-saving greenhouse.

Background technique

In winter and spring, greenhouses are usually set up in cold agricultural areas, the purpose of which is to efficiently use the sun's radiant heat to help crops resist the severe cold. At present, the trend of greenhouse development is high efficiency and energy saving.

A traditional greenhouse has a "two-chord" type arch, the so-called "two-chord" is the connected upper and lower chords. Fig. 1 is the longitudinal section structural drawing of an embodiment of existing " two strings " type arch, as shown in Fig. 1, the indoor span of the greenhouse where this arch is located is 6.5m, and the outdoor span is 7m. The arch frame includes an upper chord and a lower chord. The upper chord is located above the lower chord. Both of them include an upper convex arc portion and an inclined portion. The shade side, that is, the side facing away from the sun. In addition, the lower parts of the upper convex arc parts of the upper chord and the lower chord (point A) are placed directly on the ground level, or slightly higher than the ground level to prevent rainwater from intruding. The lower portions of the sloped sections of both the upper and lower chords are connected to the top of the greenhouse wall.

As shown in Figure 1, in the prior art, the shape of the upper convex arc surface of the upper chord and the lower chord is an upward convex arc surface, and the upper surface of the upper convex arc surface part of the upper chord is usually covered with a transparent plastic film as the front roof mulch so that as much solar heat as possible enters the greenhouse. The slope parts of the upper chord and the lower chord are all planes, and the upper surface of the slope part of the upper chord is provided with a rear awning to prevent heat loss in the greenhouse. The lower string mainly supports the upper string.

As shown in Figure 1, the longitudinal section of the upper convex arc part of the upper chord is an arc. Figure 1 marks the elevation angle values at four points A, B, C, and D starting from the bottom and 1m apart from each other. It can be seen that as the height increases, the elevation angle of the arc (that is, the angle between the tangent of the arc and the horizontal line) gradually decreases, and the elevation angle at the top (the position indicated by the "connecting line" in Figure 1) reaches the minimum value. And the average elevation angle of the upper convex arc of the upper chord (that is, the angle between the dotted line connecting the lowermost end and the uppermost end of the arc in Figure 1 and the horizontal line) is about 35°, which is smaller than the elevation angles at points A and B Value, but greater than C, D and the elevation angle value at the top, in the present invention, the part whose elevation angle is less than its average elevation angle in the upper convex arc surface part of the upper chord is called the top of the upper convex arc surface part of the upper chord, as shown in the figure As shown in 1, the top of the upper convex arc portion of the upper chord at least includes the part between point C and the top end of the upper chord arc portion.

It is precisely because in the "two-chord" type arch frame provided by the prior art, the elevation angle value of the upper convex arc portion of the upper chord gradually decreases with the increase of height, resulting in the top of the entire arch (that is, the upper convex arc of the upper chord). The top position of the arc part) elevation angle (that is, the angle between the tangent line of the arc of the longitudinal section of the arch and the horizontal line) is relatively small, and the lighting rate of this part is relatively low, which affects the overall lighting efficiency of the greenhouse and wastes A certain amount of solar energy. At the same time, since the top elevation angle of the arch is relatively small and flat, the top of the arch (that is, the position shown by the "connecting line" in Figure 1) to the lowermost end of the upward convex arc (point A) When laying the thermal insulation quilt to maintain the indoor temperature, the thermal insulation quilt is not easy to roll off, and it takes a certain amount of manpower to assist the rolling of the thermal insulation quilt. In the case of a large greenhouse area, this is an arduous labor.

Contents of the invention

The technical problem to be solved by the present invention is to provide a three-stringed high-light daylight energy-saving greenhouse, which can increase the elevation angle of the top of the greenhouse arch.

The technical solution of the present invention to solve the above-mentioned technical problems is as follows: a three-string high-lighting solar energy-saving greenhouse, which includes: soil below the indoor horizon, front roof coverings, rear roof coverings, Supporting arches below both roof coverings, walls, wall bases below the horizon connected to the bottom of said walls to support said walls, support and anti-collapse under said wall bases foundation; of which,

The arch includes: upper chord, lower chord, and three chords;

The upper chord, the lower chord and the third chord are all made of steel bars;

The upper chord and the lower chord are connected, and both have a connected upward convex arc portion facing the sun and an inclined portion facing away from the sun, and the upper convex arc portion and the inclined portion of the upper chord are respectively located at the bottom of the lower chord. Above the convex arc portion and the inclined portion;

The three chords have an inclined portion tangent to the upper convex arc portion of the upper chord; the inclined portion of the three chords is located above the top of the upper convex arc portion of the upper chord, and its lower part is aligned with the upper convex portion of the upper chord. The top of the arc part is connected, and its upper part is located above the connecting line between the upper convex arc part of the upper chord and the slope part; the top of the upper convex arc part of the upper chord is in the upper convex arc part of the upper chord The portion whose elevation angle is less than its average elevation angle;

The top of the wall is connected to the lower end of the upper convex arc portion of the upper chord and the lower chord, and the lower end of the slope portion of the two, so as to support and fix the upper chord and the lower chord.

The beneficial effects of the present invention are: in the present invention, since three strings are set above the top of the upper convex arc portion of the upper chord of the arch, the lower part of its slope part is connected to the top of the upper convex arc portion of the upper chord, and its upper part is located on the upper chord Above the connecting line between the upper convex arc part and the slope part, which means that the slope part of the three chords further increases a certain elevation angle at the top of the upper convex arc part of the upper chord. Therefore, the present invention can improve the greenhouse arch top. elevation angle.

On the basis of above-mentioned technical scheme, the present invention can also be improved as follows:

Further, the three chords also have a plane part; the plane part of the three chords is connected to the top of the slope part, located above the connecting line between the upper convex arc part and the slope part of the upper chord, and facing the slope of the upper chord The direction in which the portion is located extends the first distance.

Further, the upper chord and the lower chord are welded together by drawing.

Further, the lower part of the slope part of the three chords is directly connected to the top of the upper convex arc part of the upper chord, and the connection position is on the side of the upper convex arc part of the upper chord.

Further, the part other than the lower part of the inclined part of the three chords is welded to the top of the upper convex arc part of the upper chord by drawing welding.

Further, the number of the arches is more than two; then

The upper chords of adjacent arches are connected by steel bars;

And/or, the lower chords of adjacent arches are connected by steel bars;

And/or, the three strings of adjacent arches are connected by steel bars.

Further, the wall includes: a plane brick wall and an outer convex brick; wherein, the plane brick wall is a brick structure, and its inner wall surface is a plane, and the inner wall surface is a vertical wall of the plane brick wall located indoors. direction of the wall; the outwardly protruding bricks are integrated with the plane brick wall, and the connecting position is inside the plane brick wall; in the direction perpendicular to the inner wall, the outwardly protruding bricks contact the interior the air top surface protrudes into the room air and is not in the same plane as the interior wall surface;

Or, the wall includes: a plane brick wall, and concave bricks located inside the plane brick wall; wherein, the plane brick wall is a brick structure, and its inner wall surface is a plane, and the inner wall surface is the The planar brick wall is located on the wall in the vertical direction of the room; the concave brick is integrated with the planar brick wall, and the connection position is the inside of the planar brick wall; in the direction perpendicular to the inner wall Above, the top surface of the concave brick contacting the indoor air is recessed into the interior of the plane brick wall and is not in the same plane as the inner wall surface.

Further, the plane brick wall is a brick structure made of bricks and cement mortar.

Further, the walls include: interior walls, benzene board walls and exterior walls; wherein,

The inner wall and the outer wall are brick structure walls; the benzene board wall is made of benzene board;

The benzene board wall is located between the inner wall and the outer wall; the inner wall has an inner wall surface contacting indoor air, and the outer wall has an outer wall surface contacting outdoor air;

The inner wall, the benzene board wall and the outer wall are connected as a whole through steel bars.

Further, the inner wall is a brick structure wall made of bricks and cement mortar; and/or, the outer wall is a brick structure wall made of bricks and cement mortar.

Description of drawings

Fig. 1 is the longitudinal sectional structural drawing of an embodiment of existing " two strings " type arch;

Fig. 2 is the structural diagram of the three-string type high daylighting solar energy-saving greenhouse provided by the present invention;

Fig. 3 is the longitudinal sectional structural diagram of the arch in the greenhouse of 6.5m internal span provided by the present invention;

Fig. 4 is a structural diagram of an embodiment of the three-string high daylighting solar energy-saving greenhouse provided by the present invention.

Detailed ways

The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

Fig. 2 is a structural diagram of the Sanxian 209 high-lighting solar energy-saving greenhouse provided by the present invention. As shown in Figure 2, the greenhouse includes: soil 207 below the indoor horizon 201, a front roof covering, a rear roof covering, arches supporting both the front and rear roof coverings, the walls body, the bottom of the wall below the horizon 201 is connected to support the wall base 205 of the wall, and the foundation 206 that supports and prevents collapse below the wall base 205; wherein,

The arch frame includes: upper string 203, lower string 202, three strings 209;

The upper string 203, the lower string 202 and the third string 209 are all made of steel bars, so the strength and toughness of the three are very high;

The upper chord 203 and the lower chord 202 are connected to form a whole. Both of them have an upward convex arc part facing the sun and an inclined part facing away from the sun. The upper convex arc part of the upper chord and the upper convex arc part of the lower chord Both are convex arc surfaces, and the slope parts of both are planes. The elevation angle of the upper convex arc part of the upper chord also gradually decreases with the increase of height, and its longitudinal section is all convex arc as shown in Figure 2. The upper convex arc portion and the inclined portion of the upper chord 203 are respectively located above the upper convex arc portion and the inclined portion of the lower chord 202;

The three chords 209 have an inclined portion tangent to the upper convex arc portion of the upper chord 203; the inclined portion of the three chord 209 is located above the top of the upper convex arc portion of the upper chord 203, and its lower portion is connected to the top of the upper convex arc portion of the upper chord 203. Connected, its upper part is located above the connecting line between the upper convex arc part of the upper chord 203 and the inclined part; the top of the upper convex arc part of the upper chord 203 is the part whose elevation angle is less than its average elevation angle in the upper convex arc part of the upper chord 203;

As shown in FIG. 2 , the top of the wall is connected to the lower end of the upper convex arc portion of the upper chord 203 and the lower chord 202 , and the lower end of the slope portion of the two to support and fix the upper chord 203 and the lower chord 202 .

The "chamber" in the indoor and outdoor in the present invention both refers to the greenhouse, that is, the indoor is the inside of the greenhouse, and the outdoor is the outside of the greenhouse. The inside of the greenhouse is completely surrounded by the covering (including the front roof covering and the rear roof covering), the wall and the soil supported by the top arch to form a closed space. Therefore, the indoor and outdoor air are completely isolated. Temperatures vary. Sunlight enters the room through the front roof covering (such as transparent film, etc.), heating the indoor air and walls, so that the closed air and walls in the room continue to heat up and store energy, and the soil can also absorb the heat in the indoor air , to continuously increase its own temperature, so that both the air temperature and the soil temperature inside the greenhouse are higher than those outside, which is conducive to the growth of crops planted in the soil.

In Figure 2, the side of the greenhouse that receives sunlight is called the sunny side, and the other side is called the shaded side. The roof covering (i.e. the front roof covering) positioned at the sunny side is a transparent plastic film covered with a thermal quilt to keep warm, while the shade (i.e. the rear roof covering) is the rear shed.

In the prior art shown in Figure 1, the arch is only composed of two chords, the upper chord and the lower chord, because the elevation angle of the upper convex arc portion of the upper chord gradually decreases as the height increases, resulting in the top of the arch. If the elevation angle is too small, the light transmittance at the top of the arch is smaller than that at the bottom of the arch, which is not conducive to the increase of the temperature inside the greenhouse and the temperature of the wall.

Comparing Fig. 1, it can be seen that in Fig. 2, a third chord is also set on the arch, which is called "three chords". slashes shown in Figure 2). The slope part of the three chords is located above the top of the upper convex arc part of the upper chord. In the present invention, the top of the upper convex arc part of the upper chord refers to the part whose elevation angle is less than its average elevation angle in the upper convex arc part of the upper chord. Here, The elevation angle of the upper convex arc of the upper chord refers to the angle between the tangent of the arc of the upper chord longitudinal section and the horizontal line, and the average elevation angle of the upper convex arc of the upper chord refers to the lowermost end of the arc of the upper chord longitudinal section The angle between the line connecting the uppermost end (shown by the oblique dotted line in Figure 2) and the horizontal line (shown by the horizontal dotted line in Figure 2).

In the arch frame provided by the invention, three strings are added on the basis of the upper string and the lower string to form an arch frame connected by three strings. As shown in Figure 2, due to the existence of the three chords, the elevation angle of the top of the arch is much larger than that of the top of the arch in the prior art, which is conducive to the entry of sunlight through the transparent film and other front roof coverings covering the top of the arch. inside the greenhouse to increase the temperature inside.

In the present invention, there is a connecting line between the upper convex arc part of the upper chord and its inclined part, and the connecting line is located at the topmost part of the upper convex arc part of the upper chord, in fact it is also the topmost part of the upper chord inclined part, that is, the uppermost part of the entire upper chord top. The connecting line is in the form of a point on the longitudinal sectional view shown in Figure 2 (that is, the intersection of the upward convex arc and the oblique line representing its inclined portion), the upper part of the inclined portion of the three chords That is, above the connecting line.

It can be seen that, in the present invention, since the three chords are set above the top of the upper convex arc portion of the upper chord of the arch, the lower part of its slope part is connected to the top of the upper convex arc portion of the upper chord, and its upper part is located on the upper convex portion of the upper chord. Above the connecting line between the arc portion and the inclined portion, this means that the inclined portion of the three strings further increases a certain elevation angle at the top of the upper convex arc portion of the upper chord. Therefore, the present invention can improve the elevation angle of the top of the greenhouse arch.

Since the present invention can increase the elevation angle of the top of the greenhouse arch, when the upper surface of the slope part of the sanxian and the upper convex arc part of the upper chord are covered with a transparent film, the lighting efficiency of the greenhouse can be improved and the solar energy can be more fully utilized.

Just because the present invention can improve the elevation angle of the top of the greenhouse arch, therefore, when the insulation quilt is laid on the lowermost end of the upper convex arc part of the uppermost chord from the top of the arch, the insulation quilt is easy to roll down, which also saves A lot of manpower.

As shown in Figure 3, the three strings 209 also have a plane portion; the plane portion of the three strings 209 here is connected to the top of its slope portion, above the connecting line between the upper convex arc portion and the slope portion of the upper string 203, and the upper string 203 The direction in which the sloped portion is located extends a first distance d1, where d1 may be between 30cm-50cm.

In Fig. 2, the plane part of the three strings can be horizontal, that is, the angle between the straight line of its longitudinal section and the horizontal line is 0 degree. In addition, the plane part of the three strings can also have a certain elevation angle, and the range of the elevation angle is between 0°-5°. Here, the elevation angle of the plane part of the Sanchou refers to the angle between the straight line and the horizontal line of the longitudinal section of the plane part of the Sanchou.

As shown in FIG. 2 , the upper chord 203 and the lower chord 202 are welded together through the garland 210 . The latte art 210 here can have various realization forms, for example, it can be a steel bar, or it can be a galvanized steel pipe, a round steel, and the like. The welding method may be a triangle welding method, or other welding methods. Latte spacing can be set according to the situation, for example, set at about 20cm.

In the present invention, the lower part of the slope portion of the three strings 209 is directly connected to the top of the upper convex arc portion of the upper string 203 , and the connection position is on the side of the upper convex arc portion of the upper string 209 . The connection method here can also be a welding method, and like this, the connection method between the bottom of the slope part of the three strings and the top of the upper convex arc part of the upper string is the side welding method.

Here, the lower part of the inclined part of the sanxian and the top of the upper convex arc part of the upper chord are connected as a whole by side welding instead of top welding, which can prevent the transparent film from being scratched by the raised welding spots on the upper surface of the arch. broken, causing heat loss in the greenhouse.

The part other than the lower part of the slope part of the three strings 209 can also be welded to the top of the upper convex arc part of the upper string 203 by drawing.

The length of the greenhouse used in reality is sometimes relatively long, such as 50m. In such a greenhouse, if the two arches are located on the side wall of the greenhouse in isolation, the front roof covering and the rear roof covering covering it will easily collapse. , Therefore, two or more arches can be set in a greenhouse, and the adjacent arches are connected transversely by steel bars, etc., so as to serve as the support of the front and rear roof coverings. Specifically, the upper chords of adjacent arches are connected by steel bars, the lower chords of adjacent arches are connected by steel bars, and the three chords of adjacent arches are also connected by steel bars.

For the "two-chord" arch frame in the greenhouse with an internal span of 6.5m as shown in Figure 1, after using the present invention to improve and set the three-chord, the elevation angles of the upper convex arc parts of the upper chord can be further optimized , so as to further increase the lighting rate. Fig. 3 is a longitudinal section structural view of the arch in the greenhouse with an internal span of 6.5m provided by the present invention. As shown in Figure 3, the average elevation angle of the upper convex arc portion of the upper chord is still 35°, and the elevation angles at points A, B, C, and D increase to 63°, 48°, 36° and 28° respectively. The top of the upper convex arc part of the upper chord is provided with a three-string, and the elevation angle of the slope part is 22°. Compared with the prior art, the elevation angle of the arch top is obviously increased. In addition, the first distance that the plane portion of the three chords extends toward the slope portion of the upper chord may be 40 cm. The height of the upper chord is still 3.39m, which is the same as the prior art, but due to the existence of the three chords, the height of the arch is increased at the highest point of the slope part and the plane part, and the increased height d2 is between 0.2m-0.4m This effectively increases the lighting angle of the arch, which is conducive to improving the lighting efficiency of the greenhouse provided by the present invention.

Greenhouses in the prior art do not have only one span, so the data in Fig. 3 is only a preferred embodiment of the angles of each part of the arch, and should not be regarded as a limitation of the arch provided by the present invention. Any greenhouse in which a third string is arranged on the top of the upper string to improve the lighting efficiency of the greenhouse falls within the protection scope of the present invention.

During the day, the indoor air can receive the heat of the sun and heat up continuously. At this time, the wall will also absorb part of the heat from the air and store it. At night, the indoor air has no energy source, although the front and rear roof coverings can be used to keep it warm , but the temperature of the indoor air will still gradually drop. At this time, the heat stored in the wall will be released gradually, thereby delaying the reduction of the indoor temperature. Therefore, the indoor temperature can be maintained by increasing the heat stored in the wall.

The basic principle of wall heat storage is that the inner wall surface of the wall body (that is, the wall surface of the wall body contacting the indoor air) absorbs the heat in the indoor air and then stores it. Therefore, the size of the contact area between the wall and the indoor air directly determines the amount of heat that the wall can absorb. The larger the contact area, the more heat it absorbs.

Fig. 2 can be used as a structure diagram of an embodiment of the three-string high daylighting solar energy-saving greenhouse provided by the present invention. As shown in Fig. 2, compared with the planar inner wall in the prior art, the wall in the present invention protrudes toward the room, thereby increasing the contact area between the wall and the indoor air.

The body of wall in Fig. 2 includes: plane brick wall 20412, outward convex brick 20411; Wherein,

The plane brick wall 20412 is a brick structure, and its inner wall surface is a plane, where the inner wall surface refers to the vertical wall surface of the plane brick wall 20412 located indoors;

The convex brick 20411 is connected with the plane brick wall 20412 as a whole, and the connection position is inside the plane brick wall 20412;

In the direction perpendicular to the inner wall (that is, in the horizontal direction), the top surface of the outer convex brick 20411 that contacts the indoor air protrudes into the indoor air and is not in the same plane as the inner wall.

In Fig. 2, just because a part of the protruding brick is located inside the wall of the plane brick wall, and through this part is connected with the plane brick wall, the part outside the wall of the plane brick wall can be stabilized, otherwise, The protruding bricks may fall, which will affect the firmness of the wall.

Compared with the flat inner wall surface in the prior art, the area of the wall body in contact with the indoor air provided by the present invention is larger, and the increased area is the two sides and the upper and lower surfaces of each convex brick in contact with the indoor air. Therefore, the more protruding bricks there are, the more heat the wall can absorb and store, and the more heat it can release at night, which is more beneficial to the growth of crops.

As shown in Figure 2, since the outer convex bricks protrude into the air inside the greenhouse outside the inner wall, the inner wall is actually discontinuous at the position where there are outer convex bricks. The location of the outer convex bricks and the inner wall are continuous.

Here, the plane brick wall 20412 can adopt a brick structure made of bricks and cement mortar.

To increase the area of the wall in contact with the indoor air, in addition to setting the outer convex brick 20411, a certain recessed space can also be set on the inner wall of the wall. Fig. 4 is a structural diagram of an embodiment of the three-string high daylighting solar energy-saving greenhouse provided by the present invention. As shown in Figure 4, the walls include: a plane brick wall 40412, a concave brick 40411 inside the plane brick wall 40412; wherein,

The plane brick wall 40412 is a brick structure, and its inner wall is plane, and the inner wall here still refers to the vertical wall of the plane brick wall 40412 located indoors;

The concave brick 40411 is connected with the plane brick wall 40412 as a whole, and the connection position is inside the plane brick wall 40412;

In the direction perpendicular to the inner wall surface (horizontal direction), the top surface of the concave brick 40411 in contact with the indoor air is recessed into the inside of the plane brick wall 40412 and is not in the same plane as the inner wall surface.

In the direction perpendicular to the inner wall surface, the top surface of the concave brick contacting the indoor air is recessed into the interior of the flat brick wall and is not in the same plane as the inner wall surface, so that the inner wall surface and the inner concave brick contact the indoor air A recessed space is formed between the top surfaces, and the presence of the recessed space makes the embodiment in Figure 4 have a larger area in contact with the indoor air than the plane inner wall in the prior art, and the increased area is The two side surfaces and the upper and lower surfaces of the recessed space.

The plane brick wall 40412 in Fig. 4 also can adopt the brick structure of brick and cement mortar.

The walls in the embodiments of Fig. 2 and Fig. 4 increase the area in contact with the indoor air by means of convex and concave respectively, so that more heat can be absorbed and stored and released at night, which is conducive to improving the indoor temperature of the greenhouse at night. temperature, which promotes the growth of crops. Therefore, the more convex bricks in Figure 2 and the concave bricks in Figure 4, the larger the area in contact with the air, and the more obvious the effect of heating the wall at night.

In the present invention, since the convex brick or the recessed space connected with the plane brick wall increases the contact area between the wall and the indoor air, the wall can absorb more heat during the day, and it can also heat up the greenhouse at night. Therefore, the present invention can increase the nighttime temperature in the greenhouse, and make the greenhouse use less or no heating equipment such as electric heaters and lamps to maintain the temperature in the greenhouse, thereby reducing the energy consumption of the greenhouse and reducing the production cost of crops .

In Fig. 2, the body of wall also includes: interior wall, benzene board wall 2042 and exterior wall 2043; Wherein,

The inner wall and outer wall 2043 are brick structure walls; the benzene board wall 2042 is made of benzene board;

The benzene board wall 2042 is located between the inner wall and the outer wall 2043; the inner wall has an inner wall that contacts the indoor air, and the outer wall 2043 has an outer wall 2043 that contacts the outdoor air;

The inner wall, the benzene board wall 2042 and the outer wall 2043 are sequentially connected as one.

In the present invention, a benzene board wall made of benzene board is further arranged in the middle of the wall, so as to play a role of heat insulation and prevent the heat in the indoor air from being lost through the single brick structure wall with good heat conduction, which is beneficial Insulation of the air in the greenhouse and the growth of crops.

Here, the inner wall has the functions of load bearing, heat storage and heat preservation, the outer wall has the function of enclosing the whole benzene board wall and heat preservation, and the benzene board wall has the function of heat resistance and heat preservation.

In the present invention, since the benzene board wall with high thermal resistance is set between the inner wall and the outer wall, the heat conduction capacity of the wall is reduced. The thermal conductivity is lower and the thermal insulation capability is also stronger. Therefore, the wall body provided by the present invention can use a brick structure wall thickness smaller than that of the prior art to achieve the same thermal insulation performance as that of the prior art. The existing technology saves more bricks.

The inner wall here can be a brick structure wall made of bricks and cement mortar, and the outer wall can also be a brick structure wall made of bricks and cement mortar.

As shown in FIG. 2 , the inner wall, the benzene board wall 2042 and the outer wall 2043 are connected as a whole through steel bars 208 .

In addition, the connection surface between the benzene board wall and the interior wall, the connection surface between the benzene board wall and the exterior wall, the interior wall surface and the exterior wall surface are planes parallel to each other.

In the "two-chord" type arch frame provided by the prior art, the connecting line between the upper convex arc portion of the upper chord and the inclined portion is located at the top of the entire arch, usually on the upper surface of the upper convex arc portion of the upper chord Cover the transparent film as the front roof covering to absorb solar energy, and lay various forms of rear roof coverings above the sloped part of the upper chord to prevent heat dissipation and maintain the temperature in the greenhouse. The upper surface of the upper surface is covered with different coverings, and the two meet at the connecting line between the upper convex arc part and the inclined part of the upper chord. Usually, the intersection of coverings at this position is difficult to construct, and gaps are likely to occur, so , the heat in the greenhouse will leak out from the gap, affecting the temperature in the greenhouse.

As shown in Figure 4, the present invention sets a three-chord above the top of the upper convex arc portion of the upper chord, and the connection position between the inclined portion of the three-chord and the plane portion is located at the connecting line between the upper convex arc portion and the inclined portion of the upper chord , and the plane part of the three strings also extends the first distance of 30cm-50cm in the direction of the slope part of the upper string (that is, the direction of the shade in Figure 2), so that the connection between the upper convex arc part of the upper string and the slope part When laying the rear roof covering over the sloped portion of the upper chord, the rear roof covering can be laid to the position between the sloped portion of the sanxian and the upper convex arc portion of the upper chord, while the Covering the gap between the upper convex arc part of the upper chord and its slope part, when laying transparent film or warm quilt and other coverings on the slope part of the sanxian, it can be extended to the plane part, that is, the top of the rear roof, which solves the problem The problem of heat leakage at the top of the upper chord in the prior art further improves the thermal insulation performance of the greenhouse, and at the same time, the construction of the greenhouse becomes more convenient.

This shows that the present invention has the following advantages:

(1) In the present invention, since the three chords are set above the top of the upper convex arc portion of the upper chord of the arch frame, the lower part of its slope part is connected to the top of the upper convex arc portion of the upper chord, and its upper part is located at the upper convex arc of the upper chord. Above the connection line between the surface part and the slope part, this means that the slope part of the three strings further increases a certain elevation angle at the top of the upper convex arc part of the upper string, so the present invention can improve the elevation angle of the top of the greenhouse arch.

(2) Since the present invention can improve the elevation angle of the top of the greenhouse arch, therefore, when the upper surface of the slope part of the three strings and the upper convex arc part of the upper string is covered with a transparent film, the lighting efficiency of the greenhouse can be improved, and the solar energy can be more fully utilized .

(3) Since the present invention can improve the elevation angle of the top of the greenhouse arch, when laying the insulation quilt at the lowermost end of the upper convex arc portion from the top of the arch to the uppermost part of the arch, the insulation quilt is easy to roll down, which also saves A lot of manpower.

(4) The present invention sets a three-string above the top of the upper convex arc portion of the upper chord, and the connection position between the slope portion of the three-string and the plane portion is just above the connecting line between the above-mentioned upper convex arc portion and the slope portion of the upper chord, Moreover, the plane part of the three strings also extends a first distance of 30cm-50cm in the direction of the slope part of the upper string, so that the connecting line between the upper convex arc part of the upper string and the slope part is just below the plane part of the three strings, and on the upper string When laying the rear roof covering on the slope part of the upper chord, the rear roof covering can be laid to the position between the slope part of the sanxian and the upper convex arc part of the upper chord, and between the upper convex arc part of the upper chord and its slope part When laying a transparent film or a warm quilt on the slope of the sanxian, it can be extended to the plane part, that is, the top of the rear roof, which solves the problem of heat leakage at the top of the upper string in the prior art, and further The thermal insulation performance of the greenhouse is improved, and at the same time, the construction of the greenhouse becomes more convenient.

(5) The present invention connects the bottom of the inclined plane part of the sanchord and the top of the upper convex arc part of the upper chord as a whole by side welding, instead of using the top welding method, which can prevent the solder joints on the upper surface of the arch from being bulged The transparent film is broken, causing heat loss in the greenhouse.

(6) In the present invention, since the outer convex brick or the recessed space connected as one with the plane brick wall have increased the area that the body of wall contacts with the indoor air, thus the body of wall can absorb more heat during the day, and the body of wall can also absorb more heat at night. More energy can be released into the greenhouse. Therefore, the present invention can increase the temperature at night in the greenhouse, and make the greenhouse use less or no heating equipment such as electric heaters and lamps to maintain the temperature in the greenhouse, thereby reducing the energy consumption of the greenhouse and reducing the temperature of crops. production cost.

(7) In the present invention, a benzene board wall made of benzene board is further arranged at the middle position of the wall body, thereby playing a heat insulation effect, preventing the heat in the indoor air from being lost through the single brick structure wall body with good heat conduction, This is conducive to the heat preservation of the air in the greenhouse and the growth of crops. Simultaneously, it is also possible to achieve the same thermal insulation performance as the prior art with the thickness of the brick structure wall smaller than that of the prior art, thereby saving bricks more than the prior art.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection of the present invention. within range.

Claims (10)

1. A three-string type high daylight solar energy-saving greenhouse, characterized in that the greenhouse comprises: soil below the indoor horizon, a front roof covering, a rear roof covering, both of the front roof covering and the rear roof covering The supporting arch, the wall, and the bottom of the wall below the horizon are connected to support the wall foundation of the wall, and the foundation below the wall foundation supports and prevents collapse; wherein, The arch includes: upper chord, lower chord, and three chords; The upper chord, the lower chord and the third chord are all made of steel bars; The upper chord and the lower chord are connected, and both have a connected upward convex arc portion facing the sun and a slope portion facing away from the sun, and the upper convex arc portion and the inclined portion of the upper chord are respectively located at the bottom of the lower chord. Above the convex arc portion and the bevel portion; The three chords have an inclined portion tangent to the upper convex arc portion of the upper chord; the inclined portion of the three chords is located above the top of the upper convex arc portion of the upper chord, and its lower part is aligned with the upper convex portion of the upper chord. The top of the arc part is connected, and its upper part is located above the connecting line between the upper convex arc part of the upper chord and the slope part; the top of the upper convex arc part of the upper chord is in the upper convex arc part of the upper chord The portion whose elevation angle is less than its average elevation angle; The top of the wall is connected to the lower end of the upper convex arc portion of the upper chord and the lower chord, and the lower end of the slope portion of the two, so as to support and fix the upper chord and the lower chord. 2. The greenhouse according to claim 1, wherein the three chords also have a plane part; the plane part of the three chords is connected to the top of the slope part, and is located at the upper convex arc part and the slope part of the upper chord above the connecting line of the upper chord, and extend a first distance toward the direction where the slope portion of the upper chord is located. 3. The greenhouse according to claim 1 or 2, characterized in that the upper string and the lower string are welded together by drawing. 4. The greenhouse according to claim 1 or 2, wherein the lower part of the slope part of the three chords is directly connected to the top of the upper convex arc part of the upper chord, and the connection position is on the upper convex part of the upper chord. The sides of the arcuate part. 5. The greenhouse according to claim 1 or 2, characterized in that, the parts other than the lower part of the slope part of the three chords are welded to the top of the upper convex arc part of the upper chord through drawing welding. 6. The greenhouse according to claim 1 or 2, wherein the number of said arches is more than two; the upper chords of adjacent arches are connected by steel bars; And/or, the lower chords of adjacent arches are connected by steel bars; And/or, the three strings of adjacent arches are connected by steel bars. 7. The greenhouse of claim 1, wherein The wall includes: a plane brick wall and an outwardly convex brick; wherein, the plane brick wall is a brick structure, and its inner wall surface is a plane, and the inner wall surface is the vertical direction of the plane brick wall located indoors. wall; the convex bricks are integrated with the flat brick wall, and the connecting position is the inside of the flat brick wall; in the direction perpendicular to the inner wall, the convex bricks contact the indoor air the top surface protrudes into the room air and is not in the same plane as the interior wall surface; or, The wall includes: a plane brick wall, and concave bricks located inside the plane brick wall; wherein, the plane brick wall is a brick structure, and its inner wall surface is a plane, and the inner wall surface is the plane The brick wall is located on the wall in the vertical direction of the room; the concave brick is integrated with the plane brick wall, and the connection position is the inside of the plane brick wall; in the direction perpendicular to the inner wall, The top surface of the concave brick contacting the indoor air is recessed into the interior of the plane brick wall and is not in the same plane as the inner wall surface. 8. The greenhouse according to claim 7, characterized in that the plane brick wall is a brick structure made of bricks and cement mortar. 9. The greenhouse according to claim 1, wherein the wall body comprises: an inner wall, a benzene board wall and an outer wall; wherein, The inner wall and the outer wall are brick structure walls; the benzene board wall is made of benzene board; The benzene board wall is located between the inner wall and the outer wall; the inner wall has an inner wall surface contacting indoor air, and the outer wall has an outer wall surface contacting outdoor air; The inner wall, the benzene board wall and the outer wall are connected as a whole through steel bars. 10. The greenhouse according to claim 9, wherein the inner wall is a brick structure wall made of bricks and cement mortar; and/or, the outer wall is a brick structure wall made of bricks and cement mortar .

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