阅读说明：本技术 一种基于特斯拉阀结构的阻火器 (Flame arrester based on Tesla valve structure ) 是由 郑金磊 刘威威 李贝贝 刘秀梅 李伟 刘利利 魏令行 赵江坤 于 2021-09-09 设计创作，主要内容包括：本发明公开了一种基于特斯拉阀结构的阻火器,包括中间段箱体,在中间段箱体相对的两侧分别可拆卸连接有保护侧壳体、未保护侧壳体；分别在保护侧壳体、未保护侧壳体与中间段箱体的连接侧设置密封挡板；在中间段箱体的内部设置多组密封片和阻火芯板,所述密封片和阻火芯板交替紧密组合形成阻火单元,在阻火单元内装有针式型散热器,由阻火单元和针式型散热器配合形成特斯拉阀流道,且在安装阻火单元的中间段箱体的两侧分别装有散热板和散热肋板。本发明阻火器的结构一方面可以加速气体推出,减小阻火芯的流阻,增强其流通性能；另一方面在反向传播时流阻近似于无限大,对火焰传播起到抑制作用。(The invention discloses a flame arrester based on a Tesla valve structure, which comprises a middle section box body, wherein a protective side shell and an unprotected side shell are detachably connected to two opposite sides of the middle section box body respectively; sealing baffles are respectively arranged at the connecting sides of the protective side shell, the unprotected side shell and the middle section box body; set up multiunit gasket and back-fire relief core board in the inside of interlude box, gasket and back-fire relief core board are in turn closely combined and are formed the back-fire relief unit, are equipped with needle type radiator in the back-fire relief unit, form the tesla valve flow path by the cooperation of back-fire relief unit and needle type radiator, and are equipped with heating panel and heat dissipation floor respectively in the both sides of the box interlude of installation back-fire relief unit. The structure of the flame arrester can accelerate the gas to be pushed out, reduce the flow resistance of the flame-retardant core and enhance the circulation performance of the flame-retardant core; on the other hand, the flow resistance is approximate to infinity when the flame propagates reversely, and the flame propagation is restrained.)

1. A flame arrester based on a Tesla valve structure is characterized by comprising a middle section box body (12), wherein a protective side shell (1) and an unprotected side shell (6) are detachably connected to two opposite sides of the middle section box body (12) respectively; sealing baffles are respectively arranged at the connecting sides of the protective side shell (1), the unprotected side shell (6) and the middle section box body (12); a plurality of groups of sealing sheets (11) and fire-retardant core plates (10) are arranged in a middle section box body (12), the sealing sheets (11) and the fire-retardant core plates (10) are alternately and tightly combined to form a fire-retardant unit, a needle type radiator (8) is arranged in the fire-retardant unit, and a Tesla valve flow passage is formed by matching the fire-retardant unit and the needle type radiator (8); the bottom of the middle section box body (12) is provided with a heat radiation bottom plate (4) and a bottom heat radiation ribbed plate (3); a top heat radiation rib plate (9) is arranged at the top of the middle section box body (12); the bottom of the pin-type radiator (8) is matched with the heat dissipation bottom plate (4), two ends of the pin-type radiator (8) are respectively contacted with the bottom heat dissipation ribbed plate (3) and the top heat dissipation ribbed plate (9), and the bottom heat dissipation ribbed plate (3) and the top heat dissipation ribbed plate (9) are utilized to fully dissipate heat.

2. A flame arrestor based on a tesla valve structure as defined in claim 1 wherein attachment flanges (121) are provided on both sides of the intermediate section tank (12) in which the flame arrestor unit is installed.

3. A flame arrester based on tesla valve structure as claimed in claim 2, characterized in that the protective side shell (1) and the unprotected side shell (6) have a circular opening at one end and a rectangular opening at the other end, and the two openings are smoothly connected by a transition section; the circular opening and the rectangular opening are provided with flanges; the flange on the side of the round opening is used for being connected with a pipeline; the flange plate at the opening side of the rectangle is provided with two slots (15), and the two slots (15) are parallel to each other; and the slots (15) are respectively corresponding to the connecting flanges (121) of the middle section box body (12).

4. A flame arrestor based on tesla valve structure as claimed in claim 3 wherein the connecting member has two ends respectively passing through the connecting holes of the flanges of the protected side housing (1) and the unprotected side housing (6) and the protected side housing (1) and the unprotected side housing (6) clamp the middle section housing (12) to achieve a fixed connection.

5. A flame arrester based on a tesla valve construction as claimed in claim 3, characterized in that a short conduit is mounted on the transition between the protective side shell (1) and the unprotected side shell (6), which short conduit is fixed by welding, and that threaded holes are present on the inside of the short conduit for mounting sensors for detecting flame signals and pressure signals for monitoring the development of flames.

6. The flame arrester based on a Tesla valve structure as claimed in claim 1, wherein through holes (21) are arranged on the sealing baffle in an array, and the through holes (21) correspond to the inlet and outlet of the flow passage at both sides of the flame arresting unit.

7. The flame arrester based on Tesla valve structure as claimed in claim 1, wherein the sealing sheet (11) is provided with water drop shaped through holes arranged in an array, one side of the fire-arresting core plate (10) is provided with a flow passage structure, and the other side is provided with water drop shaped through holes arranged in an array.

8. A flame arrester based on a tesla valve structure as claimed in claim 1, characterised in that the needle-shaped heat pipe of the needle-type radiator (8) is inserted into the drop-shaped through-hole of the flame arresting unit, forming a tesla valve flow passage in cooperation with the flow passage structure in the flame arresting core plate (10).

9. The flame arrester based on the Tesla valve structure as claimed in claim 2, characterized in that the bottom heat dissipation rib plate (3) and the top heat dissipation rib plate (9) are uniformly provided with a plurality of heat dissipation fins through which heat is dissipated, and the heat dissipation rib plates are provided with flanges opposite to the connecting flange (121), the top heat dissipation rib plate (9), the middle section box body (12) and the needle type radiator (8) are fixedly connected through bolts, and the bottom heat dissipation rib plate (3), the middle section box body (12) and the heat dissipation bottom plate (4) are fixedly connected through bolts.

10. The flame arrester based on a Tesla valve structure as claimed in claim 1, wherein the heat dissipation bottom plate (4) is provided with water drop-shaped grooves arranged in an array; the end of the needle-shaped heat conduction pipe of the needle-shaped heat radiator (8) is matched with the drop-shaped groove in the heat radiation plate.

Technical Field

The invention belongs to the technical field of flame arresters, and particularly relates to a flame arrester based on a Tesla valve structure.

Background

The fire retardant unit of the fire retardant device is mainly used for carrying out fire retardant and explosion suppression through quenching effect, and the quenching effect is one of important indexes of the fire retardant device. If the flame entering the flame arrestor does not cool completely within the flame arrestor unit, the flame will continue to burn at the flame arrestor outlet, resulting in failure of the flame arrestor. The fire retardant core is a main structure for preventing flame propagation, and is usually provided with a metal net and a corrugated structure, but the fire retardant core of the type can not bear violent flame of deflagration, has large flow resistance, is not easy to clean and replace, and can not completely cool the flame. High performance flame arrestors that achieve less flow resistance and are effective in arresting flame are desired in the industry.

Disclosure of Invention

In order to solve the defects in the prior art, the invention provides the flame arrester based on the Tesla valve structure, combustible gas is expanded and then compressed when the combustible gas is positively transmitted in the Tesla valve structure, thrust is generated by the change of the pressure difference, the gas is pushed out more quickly, the flow resistance of the flame-retardant core is reduced, and the flow performance of the flame-retardant core is enhanced. When the flame propagates reversely, the flow resistance is approximate to infinity, and the flame propagation is inhibited. And the multistage structure of the Tesla valve obviously increases the contact area between the flame and the wall surface of the channel, and is beneficial to fully quenching the flame, thereby realizing the effective fire retardant effect.

The technical scheme adopted by the invention is as follows:

a flame arrester based on a Tesla valve structure comprises a middle section box body, wherein a protective side shell and an unprotected side shell are detachably connected to two opposite sides of the middle section box body respectively; sealing baffles are respectively arranged at the connecting sides of the protective side shell, the unprotected side shell and the middle section box body; a plurality of groups of sealing sheets and fire-retardant core plates are arranged in the middle section box body, the sealing sheets and the fire-retardant core plates are alternately and tightly combined to form a fire-retardant unit, a needle-type radiator is arranged in the fire-retardant unit, the fire-retardant unit and the needle-type radiator are matched to form a Tesla valve flow channel, and a heat-radiating bottom plate and a bottom heat-radiating rib plate are arranged at the bottom of the middle section box body; the top of the middle section box body is provided with a top heat radiation ribbed plate; the bottom of the pin type radiator is matched with the heat dissipation bottom plate, two ends of the pin type radiator are respectively contacted with the bottom heat dissipation ribbed plate and the top heat dissipation ribbed plate, and the bottom heat dissipation ribbed plate and the top heat dissipation ribbed plate are utilized to fully dissipate heat.

Furthermore, both sides of the middle section box body for installing the fire retardant unit are provided with connecting flanges.

Furthermore, one end of the protective side shell and one end of the unprotected side shell are circular openings, the other end of the protective side shell and the unprotected side shell are rectangular openings, and the two openings are smoothly connected through a transition section; the circular opening and the rectangular opening are provided with flanges; the flange on the side of the round opening is used for being connected with a pipeline; the flange plate on the side of the rectangular opening is provided with two slots which are parallel to each other; and the slots are respectively corresponding to the connecting flanges of the middle section box body.

Furthermore, the two ends of the connecting piece respectively penetrate through connecting holes on flanges of the shell on the protective side and the shell on the unprotected side, so that the shell on the protective side, the middle section box body and the shell on the unprotected side are fixedly connected.

Further, a short guide pipe is installed on a transition section between the protective side shell and the unprotected side shell and is fixed through welding, and a threaded hole is formed in the inner side of the short guide pipe and is used for installing a sensor and detecting a flame signal and a pressure signal, so that the flame development condition is monitored.

Furthermore, through holes which are arranged in an array mode are formed in the sealing baffle plate and correspond to the flow channel inlets and the flow channel outlets on the two sides of the fire retardant unit.

Furthermore, the sealing sheet is provided with water drop-shaped through holes which are arranged in an array manner, one side of the fire retardant core plate is provided with a flow passage structure, and the other side of the fire retardant core plate is provided with the water drop-shaped through holes which are arranged in an array manner.

Furthermore, the needle-shaped heat conduction pipe of the needle-shaped radiator is inserted into the drop-shaped through hole of the fire retardant unit and is matched with the flow passage structure in the fire retardant core plate to form a Tesla valve flow passage.

Further, a plurality of radiating ribs are uniformly arranged on the bottom radiating rib plate and the top radiating rib plate, heat is dissipated through the radiating ribs, the radiating rib plates are provided with flanges opposite to the connecting flanges, the top radiating rib plate, the middle section box body and the needle type radiator are fixedly connected through bolts, and the bottom radiating rib plate, the middle section box body and the radiating bottom plate are fixedly connected through bolts.

Furthermore, the radiating bottom plate is provided with water drop-shaped grooves which are arranged in an array manner; the tail end of the needle-shaped heat conducting pipe of the needle-shaped heat radiator is matched with the water drop-shaped groove in the heat radiating plate.

The invention has the beneficial effects that:

(1) the flame arrester designed by the invention adopts three-section detachable connection, and is convenient for cleaning and replacing the flame-retardant core.

(2) The fire retardant unit of the fire retardant device adopts a plurality of layers of fire retardant core plates with runners of Tesla valve structures to be alternately matched with the sealing sheets, has the characteristics of forward low flow resistance and reverse high flow resistance, and is large in contact area between flames and the core plates and high in heat dissipation efficiency.

(3) The needle type heat radiator heat conduction pipe is inserted into the fire-retardant core plate, flame energy in the core plate is timely diffused to the ribbed plate through the heat conduction pipe, the temperature in the fire-retardant core plate is rapidly reduced through the strong heat exchange effect of the heat-dissipation ribbed plate, and the quenching capacity of the fire-retardant unit to flame is improved.

(4) The sealing baffle is arranged between the front shell and the rear shell of the flame arrester and the middle box body, so that combustible gas is prevented from diffusing through the wall surface, the flame arresting effect is improved, and meanwhile, the impact resistance of the flame arrester is improved by matching with the flame arresting core plate.

Drawings

FIG. 1 is an exploded isometric view of a flame arrestor of the present invention;

FIG. 2 is a block diagram of a flame arrestor body of the present invention;

FIG. 3 is a view of the flame arrestor housing of the present invention;

FIG. 4 is a block diagram of a flame arrestor box of the present invention;

FIG. 5 is a block diagram of a flame arrestor sealing baffle of the present invention;

FIG. 6 is a view of a flame arrestor core of the present invention;

FIG. 7 is a diagram of a flame arrestor sealing sheet of the present invention;

FIG. 8 is a block diagram of a flame arrestor pin heat sink of the present invention;

FIG. 9 is a view of the flame arrestor heat sink base of the present invention;

FIG. 10 is a view of a flame arrestor heat dissipating rib of the present invention;

in the figure, 1, a protective side shell, 2, a protective side sealing baffle, 3, a bottom heat dissipation rib plate, 4, a heat dissipation bottom plate, 5, an unprotected side sealing baffle, 6, an unprotected side shell, 7, a connecting bolt, 8, a pin type radiator, 9, a top heat dissipation rib plate, 10, a fire retardant core plate, 11, a sealing sheet, 12, a middle box body, 121, a connecting flange, 122, a connecting hole, 13, a shell flange, 14, a boss structure, 15 and an inserting groove are arranged.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

A flame arrester based on a tesla valve structure as shown in fig. 1 includes a protective side case 1, an unprotected side case 6, an intermediate stage case 12, a protective side sealing baffle 2, an unprotected side sealing baffle 5, a heat radiation ribbed plate 9, a heat radiation bottom plate 4, a needle type radiator 8, a sealing sheet 10, and a flame arresting core plate 11.

As shown in fig. 3, the middle section box 12 has a cubic structure in the inner cavity of the middle section box 12, and the left side and the right side of the middle section box 12 are respectively used for connecting the unprotected side shell 6 and the protected side shell 1; as shown in fig. 2, the protective-side case 1, the intermediate-stage case 12, and the unprotected-side case 6 are fixedly connected to each other by the connecting bolts 7. The top and the bottom of the middle section box body 12 are respectively provided with a connecting flange 121, and the connecting flange 121 is uniformly provided with connecting holes 122 as shown in fig. 4.

The protective side shell 1 and the unprotected side shell 6 are structurally shown in fig. 3, one end of each of the protective side shell and the unprotected side shell is a circular opening, the other end of each of the protective side shell and the unprotected side shell is a rectangular opening, and the two openings are connected through a transition section; along the rectangular opening is a raised boss structure 14, which boss structure 14 mates with the middle section box 12. The circular opening and the rectangular opening are provided with flanges. The flange on the circular opening side is used for connecting with a pipeline. Two slots 15 are formed in the shell flange 13 on the side of the rectangular opening, and the two slots 15 are parallel to each other; the insertion grooves 15 correspond to the flanges 121 of the intermediate-stage case 12, respectively, and the flanges 121 can be inserted into the insertion grooves 15 during assembly. Two ends of the connecting bolt 7 respectively penetrate through connecting holes of shell flanges 13 of the protective side shell 1 and the unprotected side shell 6, so that the fixed extrusion force among the protective side shell 1, the middle section box body 12 and the unprotected side shell 6 is realized. And a short guide pipe is arranged on a transition section between the protective side shell 1 and the unprotected side shell 6 and is fixed by welding, and a threaded hole is formed in the inner side of the short guide pipe and is used for installing a sensor and detecting a flame signal and a pressure signal so as to monitor the flame development condition.

A protective side sealing baffle 2 is arranged between the protective side shell 1 and the middle section box body 12, and an unprotected side sealing baffle is arranged between the unprotected side shell 6 and the middle section box body 12 and is matched with the middle section box body through extrusion force. The structure of the sealing baffle is as shown in fig. 5, through holes 21 are arranged in an array on the sealing baffle, and the through holes 21 correspond to the inlets and outlets of the runners at the two sides of the fire retardant unit.

The middle section box body 12 is internally provided with a sealing sheet 11, a fire retardant core plate 10 and a needle type radiator 8; the middle section box body 12 is provided with a top heat radiation rib plate 9. As shown in fig. 7, the sealing sheet 11 is provided with water drop-shaped through holes arranged in an array on the sealing sheet 11. As shown in fig. 6, the fire retardant core plate 10 is provided with tesla-like valve flow passage counter bores in an array, and the adjacent counter bores are spaced at a certain distance; and a water-drop-shaped through hole is formed in the center of each counter bore. In the middle section box body 12, a plurality of groups of sealing sheets 11 and fire retardant core plates 10 are alternately and tightly combined to form a fire retardant unit, and the water drop-shaped through holes of all the sealing sheets 11 and the fire retardant core plates 10 in the fire retardant unit are completely superposed to form a water drop-shaped channel. A needle-type radiator 8 is arranged in a fire retardant unit formed by a sealing sheet 11 and a fire retardant core plate 10, a needle-shaped heat conduction pipe of the needle-type radiator 8 is inserted into a drop-shaped channel of the fire retardant unit, and is matched with a flow channel structure in the fire retardant core plate 10 to form a Tesla valve flow channel as shown in figure 8. As shown in fig. 10, the top heat dissipation rib 9 is uniformly provided with a plurality of heat dissipation fins, and heat is dissipated through the heat dissipation fins, and the top heat dissipation rib 9 is provided with flanges opposite to the connection flange 121. For convenience of installation, the top of the pin-type heat sink 8 is provided with a connecting flange, the connecting flange at the top of the pin-type heat sink 8, the top heat dissipation rib 9 and the connecting flange 121 are connected and fixed with each other through a fastener, and the top of the pin-type heat sink 8 is in contact with the top heat dissipation rib 9.

The bottom of the middle section box body 12 is outwards and sequentially provided with a heat radiation bottom plate 4 and a bottom heat radiation ribbed plate 3; as shown in fig. 9, the heat dissipation base plate 4 is provided with water-drop-shaped grooves arranged in an array manner on the heat dissipation base plate 4; the end of the needle-shaped heat pipe of the needle-shaped heat sink 8 is matched with the drop-shaped groove in the heat dissipation bottom plate 4, and passes through the drop-shaped groove to contact with the bottom heat dissipation rib plate 3. As shown in fig. 10, the bottom heat dissipation rib plate 3 is uniformly provided with a plurality of heat dissipation fins, heat is dissipated through the heat dissipation fins, and the bottom heat dissipation rib plate 3 and the heat dissipation base plate 4 are both provided with flanges opposite to the connecting flange 121, and the fixed connection between the bottom heat dissipation rib plate 3 and the heat dissipation base plate is realized by using bolts. When the pipeline protection device works, the protection side shell 1 is connected with the pipeline side needing protection, the unprotected side shell 6 is connected with the unprotected side pipeline with explosion risk, and the connection modes of the protection side shell 1, the unprotected side shell 6 and the corresponding pipelines are flange connections. When the flame arrester is installed, the bottom radiating rib plate 3 and the top radiating rib plate 9 are perpendicular to the horizontal plane, and the two ends of the needle type radiator 8 are in contact with the top radiating rib plate 9 and the bottom radiating rib plate 3, so that heat is transferred while the top radiating rib plate 9 and the bottom radiating rib plate 3 are utilized to fully radiate heat, and the radiating efficiency is improved.

The above embodiments are only used for illustrating the design idea and features of the present invention, and the purpose of the present invention is to enable those skilled in the art to understand the content of the present invention and implement the present invention accordingly, and the protection scope of the present invention is not limited to the above embodiments. Therefore, all equivalent changes and modifications made in accordance with the principles and concepts disclosed herein are intended to be included within the scope of the present invention.