阅读说明：本技术 一种固体蓄热系统 (solid heat storage system ) 是由 孙勇 王媛哲 马原 牛金花 刘聪聪 刘帅帅 于 2019-09-09 设计创作，主要内容包括：本发明公开了一种固体蓄热系统,包括保温壳体和其外部的风道结构,所述风道结构中的送风接头与保温壳体一侧连通,所述风道结构中形成与送风接头的均风室,所述均风室与蓄热仓连通,所述蓄热仓与回风室连通,所述回风室顶部与风道结构连通。本发明通过六种蓄热砖组成上下间隔设置的直线风道和弯折风道,并且通过蓄热砖中的通孔能够纵向的将直线风道和弯折风道连通,利用二者间压差不同增强了风道的换热效果,有助于实现蓄热体快速散热。本发明通过回风室的高度以及顶部结构能够有效的进行回风,本发明彻底解决了现有底部送风口送风气流分布不均,蓄热体局部温度过高,热堆积严重,空气和蓄热体热交换效率低的问题。(The invention discloses a solid heat storage system which comprises a heat preservation shell and an air channel structure outside the heat preservation shell, wherein an air supply joint in the air channel structure is communicated with one side of the heat preservation shell, an air equalizing chamber communicated with the air supply joint is formed in the air channel structure, the air equalizing chamber is communicated with a heat storage chamber, the heat storage chamber is communicated with an air return chamber, and the top of the air return chamber is communicated with the air channel structure. The six heat storage bricks form the linear air duct and the bent air duct which are arranged at intervals up and down, the linear air duct and the bent air duct can be longitudinally communicated through the through holes in the heat storage bricks, the heat exchange effect of the air duct is enhanced by utilizing the difference of the pressure difference between the linear air duct and the bent air duct, and the heat storage body is favorable for realizing the quick heat dissipation of the heat storage body. The invention can effectively return air through the height of the air return chamber and the top structure, and thoroughly solves the problems of uneven distribution of air flow supplied by the existing bottom air supply outlet, overhigh local temperature of the heat accumulator, serious heat accumulation and low heat exchange efficiency of air and the heat accumulator.)

1. The utility model provides a solid heat accumulation system, includes thermal insulation shell (1) and its outside wind channel structure (3), its characterized in that: air supply joint (303) in wind channel structure (3) and heat preservation casing (1) one side intercommunication, form in wind channel structure (3) with air supply joint (303) wind equalizing chamber (6), wind equalizing chamber (6) and heat accumulation storehouse (2) intercommunication, heat accumulation storehouse (2) and return air room (8) intercommunication, return air room (8) top and wind channel structure (3) intercommunication.

2. a solid state thermal storage system according to claim 1, wherein: the heat storage bin (2) is internally provided with a plurality of discharged heat accumulators (7), the heat accumulators (7) are in multiple layers, and air channels for communicating the air equalizing chamber (6) with the air return chamber (8) are formed in the heat accumulators (7).

3. A solid state thermal storage system according to claim 2, wherein: the air channel comprises a linear air channel (201) and a bent air channel (202), the linear air channel (201) is short in distance, high in air speed and low in pressure, and the bent air channel (202) is long in distance, low in air speed and high in pressure.

4. A solid state thermal storage system according to claim 3, wherein: the heat accumulator (7) comprises a type I heat accumulation brick (701), a type II heat accumulation brick (704), a type III heat accumulation brick (705), a type IV heat accumulation brick (707), a type V heat accumulation brick (709) and a type VI heat accumulation brick (710).

5. A solid state thermal storage system according to claim 1, wherein: the top of the air return chamber (8) is conical, the top of the air return chamber (8) is higher than the heat storage bin (2), the top of the air return chamber (8) is communicated with the rectangular air pipe (301), and the rectangular air pipe (301) is sequentially provided with a No. III air valve (306), a heat exchanger (5) and a fan (4) for communication.

6. A solid state thermal storage system according to claim 5, wherein: the rectangular air pipe (301) is further communicated with a bypass air pipe (302), two ends of the bypass air pipe (302) are respectively provided with a No. II air valve (305) and a No. I air valve (304) which are communicated, and the air supply connector (303) is communicated with the bypass air pipe (302).

7. A solid state thermal storage system according to claim 4, wherein: one side of the I-shaped heat storage bricks (701) facing the air equalizing chamber (6) forms a slope surface (702), the I-shaped heat storage bricks (701) are placed in a pairwise reverse manner to form a broken line type windward side, the upper side and the lower side of the I-shaped heat storage brick (701) are respectively provided with a linear air groove (703), the upper side and the lower side of the II-shaped heat storage brick (704) are respectively provided with a linear air groove (703), the upper side and the lower side of the III heat storage brick (705) are both provided with a linear air groove (703), a communicated through hole (706) is formed in the linear air groove (703), the through hole (706) is used for communicating the straight air duct (201) and the bent air duct (202), one end of the IV-type heat storage brick (707) forms a broken line air groove (708), the other end of the V-shaped heat storage brick forms a linear air duct (703), the side edges of the V-shaped heat storage bricks (709) are all planes which are used for stacking in a non-air duct area, one end of the VI-shaped heat storage brick (710) forms a linear air duct (703) used for the top or the bottom of the heat storage bin (2).

8. A solid state thermal storage system according to claim 7, wherein: the straight air duct (201) is formed by assembling straight air grooves (703) in the heat storage bricks, and the bent air duct (202) is formed by combining and assembling the straight air grooves (703) and the broken line air grooves (708).

9. A solid state thermal storage system according to claim 1, wherein: and a primary pressure equalizing plate (601) close to the air supply joint (303) and a secondary pressure equalizing plate (602) far away from the air supply joint (303) are arranged in the air equalizing chamber (6).

10. a solid state thermal storage system according to claim 9, wherein: the primary pressure equalizing plate (601) comprises a plurality of parallel and longitudinally arranged folded plates (610), a primary air duct (606) is formed between the two folded plates (610), the secondary pressure equalizing plate (602) comprises a transverse plate body (607) and a longitudinal plate body (608), and a secondary air duct (609) is formed between the transverse plate body (607) and the longitudinal plate body (608).

Technical Field

The invention belongs to the technical field of heat storage and heating, and particularly relates to a solid heat storage system.

background

The heating mode of the traditional coal-fired boiler has low utilization efficiency of primary energy and brings serious pollution to the atmosphere. Central and local governments have continuously provided relevant policies of electric energy substitution and encouraging electric heating, and a peak-valley electricity price policy is implemented in partial regions, so that optimization of resource allocation is facilitated, and peak-valley difference of power load is balanced.

The solid heat storage device is used as a novel energy storage system, and has the main functions of heating and storing heat energy for the solid heat storage material by utilizing clean energy sources such as off-peak electricity, photovoltaic power generation, wind power generation, hydroelectric power generation and the like, releasing the stored heat energy in the peak period of power supply, and supplying heating or heating domestic water and the like for users.

The traditional solid heat storage device air system has poor air flow organization, the serious phenomenon of local heat accumulation, the air flow is completely unorganized flow before the air comes out from the air supply outlet and enters the heat accumulator, the air pressure difference before each ventilation duct of the heat accumulator is large, the air pressure cannot be controlled, local vortex is easily formed particularly at a dead angle, the phenomenon of uneven heat exchange of different ventilation ducts is caused, the heat cannot be taken out, the local temperature of the heat accumulator is too high, the heat accumulation is serious, and the heat exchange efficiency of the air and the heat accumulator is low.

Disclosure of Invention

The invention is provided for solving the problems in the prior art, and aims to provide a solid heat storage system.

The technical scheme of the invention is as follows: the utility model provides a solid heat storage system, includes heat preservation casing and its outside wind channel structure, air supply joint and heat preservation casing one side intercommunication among the wind channel structure, form in the wind channel structure with air supply joint's wind-equalizing chamber, wind-equalizing chamber and heat storage storehouse intercommunication, the heat storage storehouse communicates with the air return chamber, air return chamber top and wind channel structure intercommunication.

Furthermore, a plurality of discharged heat accumulators are arranged in the heat accumulation bin, the heat accumulators are in multiple layers, and an air channel for communicating the air equalizing chamber with the air return chamber is formed in each heat accumulator.

furthermore, the air channel comprises a straight air channel and a bent air channel, the straight air channel is short in distance, high in air speed and low in pressure, and the bent air channel is long in distance, low in air speed and high in pressure.

Furthermore, the heat accumulator comprises a type I heat accumulation brick, a type II heat accumulation brick, a type III heat accumulation brick, a type IV heat accumulation brick, a type V heat accumulation brick and a type VI heat accumulation brick.

Furthermore, the top of the air return chamber is conical, the top of the air return chamber is higher than the heat storage bin, the top of the air return chamber is communicated with a rectangular air pipe, and a No. III air valve, a heat exchanger and a fan are sequentially arranged on the rectangular air pipe for communication.

Furthermore, the rectangular air pipe is communicated with a bypass air pipe, two ends of the bypass air pipe are respectively provided with a No. II air valve and a No. I air valve, and the air supply connector is communicated with the bypass air pipe.

Further, one side formation slope of I type heat accumulation brick orientation is all plenum, thereby two liang of back mutually of I type heat accumulation brick is piled up mutually and is formed broken line type's windward side, both sides all form sharp wind groove about I type heat accumulation brick, both sides all form sharp wind groove about II type heat accumulation brick, both sides all form the through-hole of formation intercommunication in sharp wind groove and the sharp wind groove about III heat accumulation brick, the through-hole is used for communicateing sharp wind channel, the wind channel of buckling, IV type heat accumulation brick one end forms broken line wind groove, and its other end forms sharp wind groove, V type heat accumulation brick side is the plane and is used for the pile up in non-wind channel district, VI type heat accumulation brick one end forms sharp wind groove and is used for holding hot storehouse top or bottom.

Furthermore, the straight air duct is formed by assembling straight air grooves in the heat storage bricks, and the bent air duct is formed by assembling the straight air grooves and the broken line air grooves.

Furthermore, a primary pressure equalizing plate close to the air supply joint and a secondary pressure equalizing plate far away from the air joint are arranged in the air equalizing chamber.

Furthermore, the primary pressure equalizing plate comprises a plurality of parallel and longitudinally arranged folded plates, a primary air channel is formed between the two folded plates, the secondary pressure equalizing plate comprises a transverse plate body and a longitudinal plate body, and a secondary air channel is formed between the transverse plate body and the longitudinal plate body.

the six heat storage bricks form the linear air duct and the bent air duct which are arranged at intervals up and down, the linear air duct and the bent air duct can be longitudinally communicated through the through holes in the heat storage bricks, the heat exchange effect of the air duct is enhanced by utilizing the difference of the pressure difference between the linear air duct and the bent air duct, and the heat storage body is favorable for realizing the quick heat dissipation of the heat storage body.

The invention makes the air flow approach to the surface of the heat storage body in a piston type through the primary pressure equalizing plate and the secondary pressure equalizing plate in the air equalizing chamber, thereby increasing the organization and the uniformity of the air flow of the air supply and improving the conveying efficiency of the air system.

The invention can effectively return air through the height of the air return chamber and the top structure, and ensures the uniformity of air supply through the different sizes of the air supply structures.

drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an external view of the air delivery fitting of the present invention;

FIG. 3 is a schematic structural diagram of a primary pressure equalizing plate according to the present invention;

FIG. 4 is a schematic structural diagram of a secondary pressure equalizing plate according to the present invention;

FIG. 5 is a schematic view of a linear air duct according to the present invention;

FIG. 6 is a schematic view of the structure of the broken-line duct of the present invention;

FIG. 7 is a schematic structural view of a type I heat storage brick of the present invention;

FIG. 8 is a schematic structural view of a type II heat-accumulative brick of the present invention;

FIG. 9 is a schematic structural view of a type III heat-accumulative brick of the present invention;

FIG. 10 is a schematic view of the structure of a type IV thermal storage brick of the present invention;

FIG. 11 is a schematic structural view of a V-shaped heat storage brick in the invention;

FIG. 12 is a schematic structural view of a type VI heat-accumulative brick of the present invention;

Wherein:

1 heat preservation shell and 2 heat storage bins

3 air duct structure 4 fans

5 heat exchanger 6 uniform air chamber

7 heat accumulator 8 air return chamber

201 straight air duct 202 bent air duct

301 rectangular air duct 302 bypass air duct

304I air valve of 303 air supply connector

No. 305 II blast gate 306 III blast gate

601 primary pressure equalizing plate 602 secondary pressure equalizing plate

603 enter chamber 604 primary pressure equalizing chamber

605 two-stage pressure-equalizing cavity 606 one-stage air duct

607 horizontal plate body 608 vertical plate body

609 secondary air duct 610 folded plate

701I type heat storage brick

702 slope 703 straight wind groove

705 III model 704 II heat-accumulating brick

706 through hole 707 IV type heat storage brick

708 broken line wind groove 709V type heat accumulation brick

710 VI type heat-accumulating brick.

Detailed Description

The present invention is described in detail below with reference to the accompanying drawings and examples:

As shown in fig. 1 ~ 12, a solid heat storage system comprises a heat preservation shell 1 and an air duct structure 3 outside the heat preservation shell, wherein an air supply joint 303 in the air duct structure 3 is communicated with one side of the heat preservation shell 1, an air equalizing chamber 6 communicated with the air supply joint 303 is formed in the air duct structure 3, the air equalizing chamber 6 is communicated with a heat storage bin 2, the heat storage bin 2 is communicated with an air return chamber 8, and the top of the air return chamber 8 is communicated with the air duct structure 3.

The heat storage bin 2 is a heat storage core, and a through hole through which an electric heating wire can pass and heat the heat storage body 7 is formed in the heat storage body 7.

A plurality of discharged heat accumulators 7 are arranged in the heat storage bin 2, the heat accumulators 7 are in multiple layers, and air channels for communicating the air equalizing chamber 6 with the air return chamber 8 are formed in the heat accumulators 7.

The air channel comprises a straight air channel 201 and a bent air channel 202, the straight air channel 201 is short in distance, high in air speed and low in pressure, and the bent air channel 202 is long in distance, low in air speed and high in pressure.

the heat accumulator 7 comprises a type I heat accumulation brick 701, a type II heat accumulation brick 704, a type III heat accumulation brick 705, a type IV heat accumulation brick 707, a type V heat accumulation brick 709 and a type VI heat accumulation brick 710.

The top of the air return chamber 8 is conical, the top of the air return chamber 8 is higher than the heat storage bin 2, the top of the air return chamber 8 is communicated with the rectangular air pipe 301, and the rectangular air pipe 301 is sequentially provided with a No. III air valve 306, a heat exchanger 5 and a fan 4 for communication.

The rectangular air pipe 301 is further communicated with a bypass air pipe 302, two ends of the bypass air pipe 302 are respectively provided with a No. II air valve 305 and a No. I air valve 304 which are communicated, and the air supply joint 303 is communicated with the bypass air pipe 302.

As shown in fig. 8 ~ 12, a slope 702 is formed on one side of the i-type thermal storage brick 701 facing the air-equalizing chamber 6, the i-type thermal storage bricks 701 are stacked back to back in pairs to form a broken line type windward side, linear air grooves 703 are formed on both the upper and lower sides of the i-type thermal storage brick 701, linear air grooves 703 are formed on both the upper and lower sides of the ii-type thermal storage brick 704, linear air grooves 703 are formed on both the upper and lower sides of the iii-type thermal storage brick 705, and a through hole 706 communicated with the linear air duct 201 and the bent air duct 202 is formed in the linear air grooves 703, a broken line air groove 708 is formed at one end of the iv-type thermal storage brick 707, and a linear air groove 703 is formed at the other end of the iv-type thermal storage brick 703, the lateral sides of the v-type thermal storage brick 709 are both flat surfaces for stacking in a non-air duct area.

The straight air duct 201 is formed by assembling straight air ducts 703 in the heat storage bricks, and the bent air duct 202 is formed by assembling the straight air ducts 703 and the bent air ducts 708.

The air-equalizing chamber 6 is provided with a primary pressure-equalizing plate 601 close to the air supply joint 303 and a secondary pressure-equalizing plate 602 far away from the air supply joint 303.

The primary pressure equalizing plate 601 comprises a plurality of parallel and longitudinally arranged folded plates 610, a primary air duct 606 is formed between the two folded plates 610, the secondary pressure equalizing plate 602 comprises a transverse plate body 607 and a longitudinal plate body 608, and a secondary air duct 609 is formed between the transverse plate body 607 and the longitudinal plate body 608.

An inlet cavity 603 is formed between the side wall of the heat-insulating shell 1 and the primary pressure equalizing plate 601, a primary pressure equalizing cavity 604 is formed between the primary pressure equalizing plate 601 and the secondary pressure equalizing plate 602, and a secondary pressure equalizing cavity 605 is formed between the primary pressure equalizing cavity 604 and the I-shaped heat storage brick 701.

The heat exchanger 5 and the fan 4 are installed in the equipment room.

As shown in fig. 1, the air outlet of the air supply joint 303 passes through the primary pressure equalizing plate 601 and the secondary pressure equalizing plate 602 in sequence, then enters the high-low staggered fold line surface formed by the i-shaped heat storage bricks 701, then enters the linear air duct 201 and the bent air duct 202 in the heat storage bricks 7 respectively, passes through the air ducts, then enters the air return chamber 8, and then is discharged from the air return chamber 8.

As shown in fig. 2, the air supply joint 303 includes a rectangular body and a trapezoidal body, the rectangular body is formed with a rectangular hole for directly communicating with the bypass air duct 302, and the trapezoidal body is formed with a gradually enlarged through hole in a trapezoidal shape for communicating with the heat insulating housing 1.

the air supply joints 303 are multiple and have the same shape, but the external dimensions of the air supply joints are different, the air supply joint 303 on the upper part in the heat-insulating shell 1 is smaller in size, and the air supply joint 303 on the lower part is larger in size, so that the area of an air port is sequentially reduced from bottom to top, the air supply quantity of each air supply port is basically the same, and the uniformity of air supply is ensured.

As shown in fig. 3-4, a primary pressure equalizing plate 601 and a secondary pressure equalizing plate 602 are arranged in the pressure equalizing chamber 6, and the air flow is sent out from the air supply connector 303 and then passes through the primary pressure equalizing plate 601 and the secondary pressure equalizing plate 602, so that the air flow is pushed to the surface of the heat storage body in a piston-like manner, the organization and uniformity of the air flow of the air supply are increased, and the conveying efficiency of the air system is improved.

As shown in fig. 5, the straight duct 201 necessarily includes a type i heat storage brick 701 on the windward side, and then straight ducts in type ii heat storage bricks 704, type iii heat storage bricks 705, type iv heat storage bricks 707, and type vi heat storage bricks 710 are selected.

II-type heat storage bricks 704, III-type heat storage bricks 705 or IV-type heat storage bricks 707 are selected in the middle of the heat storage bin 2, VI-type heat storage bricks 710 are selected at the contact part of the heat storage bin 2 and the linear air channel 703 in the VI-type heat storage bricks 710 is far away from the top or the bottom of the heat storage bin 2.

When the upper and lower air ducts need to be communicated, the III heat storage bricks 705 are added, so that the vertical communication is realized.

As shown in fig. 6, when the bent air duct 202 is assembled, the bent air duct 202 shown in fig. 6 is formed by continuously using the polygonal-line air grooves 708 formed on the tops of the plurality of iv-type heat storage bricks 707.

V-shaped heat storage bricks 709 are stacked at the position of the heat storage bin 2 where the air exhaust duct is not arranged.

The type II heat storage bricks 704, the type III heat storage bricks 705, the type IV heat storage bricks 707, the type V heat storage bricks 709 and the type VI heat storage bricks 710 have the same size.

Preferably, the electric heating wire may also be disposed in the linear air duct 201.

As shown in fig. 7, one side wall of the i-shaped heat storage brick 701 is a slope 702, the slope 702 plays a role in guiding wind, and the slope 702 forms a V-shaped structure in pairs, so that the airflow in the secondary pressure equalizing cavity 605 can be collected.

the I-shaped heat storage bricks 701 are placed back to form a heat accumulator windward surface structure; the type II heat storage brick 704 is a structure with air grooves arranged on the upper surface and the lower surface; the III-type heat storage brick 705 is additionally provided with a through hole 706 penetrating through an upper air duct and a lower air duct on the basis of the II-type heat storage brick 704; the surface of the IV-type heat storage brick 707 is provided with a fold line air groove 708 which has a turning function to the air flow; no wind groove is formed on the surface of the V-shaped heat storage brick 709; the VI-shaped heat storage brick 710 is provided with an air duct only on one side. The heat storage bricks form a layer of linear air channel 201 and a layer of bent air channel 202 according to an air channel structure, and the linear air channel 201 and the bent air channel 202 are arranged at intervals up and down.

As shown in fig. 3, the flaps 610 are zigzag-shaped, so that two adjacent flaps 610 form a strip-shaped and triangular-convex air channel structure.

The folded plate 610 is perpendicular to the upper and lower ends of the thermal insulation case 2.

Preferably, the flap 610 is angled at an acute angle to the direction of the incoming air flow, thereby causing the air flow to advance nearly piston-like to the primary pressure-equalizing chamber 604.

As shown in fig. 4, the horizontal plates 607 and the vertical plates 608 are arranged crosswise at equal intervals, so as to form a secondary air duct 609 with a square cross section.

The horizontal plate 607 is perpendicular to the left and right sides of the heat preservation housing 2, and the vertical plate 608 is perpendicular to the upper and lower ends of the heat preservation housing 2.

Preferably, the included angle between the horizontal plate 607 and the vertical plate 608 and the air inlet direction is an acute angle, and the longitudinal section of the secondary air duct 609 is in a trapezoid shape. Causing the gas flow to approach a piston-type propulsion to the secondary pressure-equalizing chamber 605.

The air entering the heat storage bin through the air inlet and outlet connector 303 of the primary pressure equalizing plate 601 and the secondary pressure equalizing plate 602 is blown to the heat storage body 7 in a form close to a piston flow under the action of the primary pressure equalizing plate 601 and the secondary pressure equalizing plate 602, so that on one hand, air is guided, and disordered flow is avoided; on the other hand, a large amount of air flow uniformly passes through the heat accumulator 7, so that heat in the heat accumulator 7 can be uniformly and effectively taken away, and the heat transfer efficiency is improved.

The straight air channel 201 and the bent air channel 202 are adjacent up and down, the sections of the straight air channel 201 and the bent air channel 202 are rectangular, and the straight air channel 201 is connected through a straight air groove 703 in the heat storage brick; the bent air channel 202 is connected with the bent air channel 708 through the straight air channel 703 in the heat storage brick, the bent air channel 202 is longer than the heat storage body, the heat exchange area is increased, but the resistance is increased, the circulation is not smooth, the straight air channel 201 is short in distance, the air speed is high, the pressure is small, the circulation is guaranteed to be smooth, the straight air channel 201 is communicated with the straight air channel 706 through the through hole, the pressure difference exists between the bent air channel 202, the heat exchange effect of the heat exchange channel is enhanced, and the heat storage body can be rapidly cooled.

The working process of the invention is as follows:

The heat accumulation process, close No. III blast gate 306, No. I blast gate 304, open No. II blast gate 305, switch on electric heating wire, the air that heats in the heat accumulation storehouse 2 forms the updraft owing to density reduction, thereby the gathering is in the pinnacle department of return air room 8, get into rectangular air pipe 301 through return air room 8, and simultaneously, under the poor drive of density of cold and hot air, directly get into equal plenum 6 through bypass air pipe 302 and air supply connector 303, this application helps make full use of natural power, the consumption of energy saving.

The six heat storage bricks form the linear air duct and the bent air duct which are arranged at intervals up and down, the linear air duct and the bent air duct can be longitudinally communicated through the through holes in the heat storage bricks, the heat exchange effect of the air duct is enhanced by utilizing the difference of the pressure difference between the linear air duct and the bent air duct, and the heat storage body is favorable for realizing the quick heat dissipation of the heat storage body.

The invention makes the air flow approach to the surface of the heat storage body in a piston type through the primary pressure equalizing plate and the secondary pressure equalizing plate in the air equalizing chamber, thereby increasing the organization and the uniformity of the air flow of the air supply and improving the conveying efficiency of the air system.

The invention can effectively return air through the height of the air return chamber and the top structure, and ensures the uniformity of air supply through the different sizes of the air supply structures.