Hydrogen generating cabin sealing structure

Abstract

The utility model provides a hydrogen generating cabin sealing structure and relates to the technical field of hydrogen reaction devices, in order to solve the problem that in the prior art, a single-layer cover is poor in sealing performance, the hydrogen generating cabin sealing structure comprises a hydrogen generating cabin body and a first sealing mechanism, and a connecting nozzle extending upwards is arranged at the top of the hydrogen generating cabin body; an upper opening is formed in the connecting nozzle, the first sealing mechanism is arranged at the upper opening of the connecting nozzle, the first sealing mechanism comprises an outer sealing cover and an inner sealing cover, the outer sealing cover is in sealing connection with the outer wall of the connecting nozzle on the outer side of the connecting nozzle, and the inner sealing cover is in sealing connection with the outer wall of the connecting nozzle. The inner sealing cover is connected to the inner side of the outer sealing cover and connected with the inner wall of the connecting nozzle in a sealed mode. Compared with a traditional thread sealing structure with a single-layer cover, the sealing structure of the hydrogen generating cabin has the double-layer sealing effect, the double-sealing guarantee effect is achieved, and the sealing performance is better.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydrogen reaction device technical field especially is involved in a kind of hydrogen cabin sealing structure. BACKGROUND

[0002] The known hydrogen reaction device is provided with a metal hydride in the reaction bin, the metal hydride reacts with water to form hydrogen gas, and the water bin is connected to a water pump by a water outlet pipe. Water enters the reaction bin through the water inlet pipe by the water pump, mixes with the metal hydride, and produces hydrogen gas through a chemical reaction.

[0003] At present, the known hydrogen cabin sealing cover is mainly sealed by internal thread connection, which requires a large tightening force and is inconvenient to operate, and has poor sealing performance. In addition, the liquid injection structure of the hydrogen cabin cover is generally invisible, and the process state of liquid entering the hydrogen cabin cannot be observed after installation. The liquid injection rate per unit time can only be deduced by the total liquid amount required for reaction in the test stage, and it is impossible to determine whether there is uneven liquid injection or liquid injection deviation during the liquid injection process, which is easy to cause false judgment.

[0004] The patent application file with application number 202011041300.6 discloses a solid hydrogen hydrogen gas generating device. The bottom of the hydrogen cabin is provided with a wastewater outlet, the top of the hydrogen cabin is provided with a mounting hole, a sensor connection port and a hydrogen gas outlet, the mounting hole is threadedly connected with a bin cover, the bin cover is provided with a water inlet hole penetrating from its upper surface to its bottom surface, the bottom of the bin cover is connected with a containing barrel, the containing barrel is a cylindrical structure with an open top end and a closed bottom end, and the surface of the containing barrel is uniformly provided with through holes communicating with its inner cavity. The water inlet hole is provided with a standard thread. The bin cover of this hydrogen gas generating device is connected with the mounting hole through threads, and the water inlet hole is connected with the water pipeline through threads. The installation operation is inconvenient, and the single-layer cover has poor sealing performance. In addition, water directly flows into the containing barrel from the water inlet hole to realize the reaction of solid hydride and water to release hydrogen, but the contact area between water and solid hydride is small, and the reaction efficiency is low. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a hydrogen cabin sealing structure to solve the problem of poor sealing performance of the single-layer cover in the prior art. Compared with the thread sealing structure of the traditional single-layer cover, the hydrogen cabin sealing structure of the utility model has the effect of double-layer sealing, plays a double sealing guarantee role, and has better sealing performance.

[0006] The utility model provides a kind of hydrogen cabin sealing structure, including hydrogen cabin body and first sealing mechanism, the top of the hydrogen cabin body is provided with the connecting mouth that projects upward, upper opening is provided on the connecting mouth, the first sealing mechanism is arranged at the upper opening of the connecting mouth, the first sealing mechanism includes outer sealing cover and inner sealing cover, the outer sealing cover is sealedly connected with the outer wall of the connecting mouth on the outside of the connecting mouth, the inner sealing cover is connected to the inside of the outer sealing cover and is sealedly connected with the inner wall of the connecting mouth.

[0007] As a preferred scheme of the utility model, the outer sealing cover is connected with the outer wall of the connecting mouth by thread, the top surface of the inner sealing cover is connected with the top surface of the outer sealing cover by bolt, the first elastic sealing assembly is arranged between the inner sealing cover and the inner wall of the connecting mouth, and the first elastic sealing assembly is sealedly connected between the inner sealing cover and the inner wall of the connecting mouth.

[0008] As a preferred scheme of the utility model, the first elastic sealing assembly includes a first sealing ring and a second sealing ring, a first annular groove and a second annular groove are arranged on the outside of the inner sealing cover sidewall, the first annular groove and the second annular groove are arranged in parallel, and the first sealing ring and the second sealing ring are arranged in the first annular groove and the second annular groove respectively and protrude from the first annular groove and the second annular groove.

[0009] As a preferred scheme of the utility model, the second sealing mechanism further includes a lower sealing cover and a second elastic sealing assembly, the lower sealing cover is arranged on the outside of the connecting mouth on the lower side of the outer sealing cover, a liquid inlet and a plurality of distribution holes are arranged at the lower section of the connecting mouth corresponding to the lower sealing cover, the plurality of distribution holes are evenly distributed along the circumferential side of the connecting mouth, the second elastic sealing assembly is sealedly connected between the outer wall of the connecting mouth and the lower sealing cover, a shunt passage is formed between the outer wall of the connecting mouth, the second elastic sealing assembly and the lower sealing cover, and the shunt passage is communicated with the liquid inlet and the plurality of distribution holes.

[0010] As a preferred scheme of the utility model, the second elastic sealing assembly includes a third sealing ring and a fourth sealing ring, the third sealing ring and the fourth sealing ring are arranged on the upper and lower sides of the plurality of distribution holes respectively and are sealedly connected between the outer wall of the connecting mouth and the lower sealing cover, parallel third annular grooves and fourth annular grooves are arranged on the outer wall of the connecting mouth, the third annular grooves and the fourth annular grooves are arranged on the upper and lower sides of the plurality of distribution holes respectively, and the third sealing ring and the fourth sealing ring are connected in the third annular grooves and the fourth annular grooves respectively.

[0011] As a preferred scheme of the utility model, still include the core, the core includes the outer core body and the inner column pipe, the column pipe gap is arranged in the inside of the outer core body, the inside of the connecting mouth is provided with the clamping table, the clamping table is arranged in the downside of multiple the distribution hole and is along the circumference of the connecting mouth arrangement, the top edge of the outer core body is provided with the overlap edge that stretches out to the outside, the overlap edge is along the circumference of the outer core body arrangement, the overlap edge is overlapped on the clamping table.

[0012] As a preferred scheme of the utility model, the column pipe is coaxial with the outer core body arrangement, the top surface downside of the inner sealing cover is provided with the installation groove, the top end of the column pipe is provided with the clamping piece, the upper end of the clamping piece is connected in the installation groove, the lower end of the clamping piece is connected with the column pipe.

[0013] As a preferred scheme of the utility model, the outer wall of the outer sealing cover is provided with multiple vertical extension's convex rib, multiple the convex rib is evenly distributed along the circumferential side of the outer sealing cover, the upside of the outer arm of the outer sealing cover is provided with multiple plane, multiple the plane is evenly distributed along the circumferential side of the outer sealing cover.

[0014] Compared with the prior art, the utility model has following positive effect:

[0015] The hydrogen cabin sealing structure provided by the utility model, including hydrogen cabin body and first sealing mechanism, the top of hydrogen cabin body is provided with the connecting mouth that stretches out to the upwards, be provided with the upper opening on the connecting mouth, the first sealing mechanism sets up at the upper opening of connecting mouth, the first sealing mechanism includes outer sealing cover and inner sealing cover, and the outer sealing cover is sealedly connected with the outer wall of the connecting mouth on the outside of the connecting mouth, and the inner sealing cover is connected to the inside of the outer sealing cover and is sealedly connected with the inner wall of the connecting mouth. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for ordinary skilled person in the art, other drawings can be obtained according to these drawings without creating creative labor.

[0017] Figure 1 It is the structure schematic diagram of the hydrogen cabin sealing structure of the utility model;

[0018] Figure 2 The exploded view of the hydrogen cabin sealing structure of the utility model;

[0019] Figure 3 The front view of the hydrogen cabin sealing structure of the utility model;

[0020] Figure 4 The Figure 3 The cross-sectional view of A-A;

[0021] Figure 5 The internal structure schematic view of the hydrogen cabin sealing structure of the utility model.

[0022] In the figure: 1, hydrogen cabin body; 11, connecting mouth; 111, third ring groove; 112, fourth ring groove; 113, liquid distribution hole; 114, clamping table; 12, gas outlet; 2, core; 21, outer core body; 22, column pipe; 23, lap joint edge; 24, clamping piece; 3, outer sealing cover; 31, convex rib; 32, plane; 4, inner sealing cover; 41, first ring groove; 42, second ring groove; 43, mounting groove; 5, bolt; 6, first elastic sealing assembly; 61, first sealing ring; 62, second sealing ring; 7, lower sealing cover; 71, liquid inlet; 8, second elastic sealing assembly; 81, third sealing ring; 82, fourth sealing ring; 9, shunt channel. DETAILED DESCRIPTION

[0023] In the description of the utility model, it needs to be explained that, unless otherwise stated, the meaning of "multiple" is two or more than two; The orientation or position relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "front end", "rear end", "head", "tail" and the like is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplification, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0024] In the description of the utility model, it also needs to be explained that, unless otherwise stated and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; It can be mechanical connection, or electrical connection; It can be directly connected, or indirectly connected through an intermediate medium. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0025] The utility model discloses a further detailed description of the specific implementation of the utility model below in conjunction with the drawings.

[0026] Embodiment 1:

[0027] The hydrogen cabin sealing structure provided in the embodiment comprises a hydrogen cabin body 1 and a first sealing mechanism, as shown in the drawings. Figures 1-5 The first sealing mechanism comprises an outer sealing cover 3 and an inner sealing cover 4, the outer sealing cover 3 is sealingly connected with the outer wall of the connecting mouth 11 on the outer side of the connecting mouth 11, and the inner sealing cover 4 is connected to the inner side of the outer sealing cover 3 and sealingly connected with the inner wall of the connecting mouth 11.

[0028] The hydrogen cabin sealing structure of the embodiment seals the upper opening of the connecting mouth 11 on the outer side of the connecting mouth 11 through the outer sealing cover 3 and seals the upper opening of the connecting mouth 11 on the inner side of the connecting mouth 11 through the inner sealing cover 4, forming a double-layer sealing structure.

[0029] Preferably, as shown in the drawings, Figure 2 And Figure 4 The outer sealing cover 3 is connected with the outer wall of the connecting mouth 11 through threads, and the top surface of the inner sealing cover 4 is connected with the top surface of the outer sealing cover 3 through bolts 5.

[0030] When the outer sealing cover 3 is screwed on the connecting mouth 11, the inner sealing cover 4 is also pressed into the inner side of the connecting mouth 11 under the downward external force of the outer sealing cover 3, so that the first sealing mechanism is convenient to install.

[0031] Preferably, the first elastic sealing assembly 6 comprises a first sealing ring 61 and a second sealing ring 62.

[0032] When the inner sealing cover 4 is connected to the inside of the connecting nozzle 11, the first sealing ring 61 and the second sealing ring 62 play the role of sealing, only one sealing ring is pressed into the connecting nozzle 11 to play the role of sealing gas, and the double-layer sealing ring plays the role of double protection, which can further enhance the sealing effect between the connecting nozzle 11 and the inner sealing cover 4.

[0033] Preferably, the hydrogen tank sealing structure of the embodiment further comprises a second sealing mechanism, the second sealing mechanism comprising a lower sealing cover 7 and a second elastic sealing assembly 8, the lower sealing cover 7 being arranged outside the connecting nozzle 11 on the lower side of the outer sealing cover 3. A liquid inlet 71 and a plurality of liquid distribution holes 113 are arranged on the lower section of the connecting nozzle 11 corresponding to the lower sealing cover 7, the plurality of liquid distribution holes 113 being uniformly distributed along the circumferential side of the connecting nozzle 11, and the second elastic sealing assembly 8 being sealingly connected between the outer wall of the connecting nozzle 11 and the lower sealing cover 7. A shunt passage 9 is formed between the outer wall of the connecting nozzle 11, the second elastic sealing assembly 8 and the lower sealing cover 7, and the shunt passage 9 communicates with the liquid inlet 71 and the plurality of liquid distribution holes 113. The liquid distribution holes 113 are provided with 8 liquid distribution holes.

[0034] When the liquid is introduced into the hydrogen tank, the liquid passes through the liquid inlet 71 on the lower sealing cover 7, passes through the shunt passage 9 and enters the 8 liquid distribution holes 113 uniformly distributed on the connecting nozzle 11, the liquid distribution holes 113 play the role of shunting the liquid, so that the flow rate of the liquid in each liquid distribution hole 113 is equal, the liquid flows into the hydrogen tank from the liquid distribution holes 113, at the same time, the liquid flushes the column tube 22 arranged in the middle of the core from the surrounding, so that the liquid flows downward along the column tube 22 and reacts with the solid hydride in the core, so that the liquid and the solid hydride are in full contact, the reaction contact area is increased, and the reaction efficiency is improved.

[0035] Preferably, the second elastic sealing assembly 8 comprises a third sealing ring 81 and a fourth sealing ring 82, the third sealing ring 81 and the fourth sealing ring 82 being respectively arranged on the upper and lower sides of the plurality of liquid distribution holes and being sealingly connected between the outer wall of the connecting nozzle 11 and the lower sealing cover 7. A third annular groove 111 and a fourth annular groove 112 are arranged on the outer wall of the connecting nozzle 11 in parallel, the third annular groove 111 and the fourth annular groove 112 being respectively arranged on the upper and lower sides of the plurality of liquid distribution holes, and the third sealing ring 81 and the fourth sealing ring 82 being respectively connected in the third annular groove 111 and the fourth annular groove 112. The third annular groove 111 and the fourth annular groove 112 play the role of positioning the third sealing ring 81 and the fourth sealing ring 82, respectively, so that the sealing effect is more stable. The third sealing ring 81 and the fourth sealing ring 82 seal the liquid in the shunt passage 9, so that the liquid does not leak under the condition of pressure in the hydrogen tank, and at the same time, the liquid does not leak under the condition of fine adjustment of the position of the lower sealing cover 7. When assembling, only the third sealing ring 81 and the fourth sealing ring 82 are respectively assembled in the third annular groove 111 and the fourth annular groove 112, and the lower sealing cover 7 is axially sleeved on the upper part of the connecting nozzle 11 and is gently pressed down, which is convenient to operate.

[0036] As shown in Figure 2 and Figure 3 The lower side of the lower sealing cover 7 is provided with an arc-shaped side and is matched with the outer arc surface of the hydrogen generator body, so that the shunt passage 9 is communicated with the liquid inlet 71 and the plurality of liquid distribution holes 113, and installation errors are prevented.

[0037] Preferably, the hydrogen generator sealing structure of the embodiment further comprises a core 2, which comprises an outer core body 21 and an inner column pipe 22 arranged at the inner side of the outer core body. A clamping table 114 is arranged at the inner side of the connecting nozzle 11, and the clamping table 114 is arranged at the lower side of the plurality of liquid distribution holes 113 and is arranged along the circumference of the connecting nozzle 11. An overlapping edge 23 is arranged at the top edge of the outer core body 21 and extends outward, and the overlapping edge 23 is arranged along the circumference of the outer core body 21 and overlaps the clamping table 114.

[0038] Before the test reaction, the core 2 can be directly placed in the hydrogen generator, the overlapping edge 23 overlaps the clamping table 114, and the clamping table 114 supports the core 2. In the state of installing the second sealing mechanism and not installing the first sealing mechanism, the test of liquid into the hydrogen generator is performed, which is convenient for directly observing whether the liquid is uniformly injected into the hydrogen generator and observing the contact state of the liquid and the solid hydride in the core, and facilitating installation and debugging.

[0039] Preferably, the column pipe 22 is coaxially arranged with the outer core body 21. An installation groove 43 is arranged at the lower side of the top surface of the inner sealing cover 4. A clamping piece 24 is arranged at the top end of the column pipe 22, the upper end of the clamping piece 24 is connected to the installation groove 43, the lower end of the clamping piece 24 is connected to the column pipe 22, and the installation groove 43 fixes the column pipe 22 to avoid the core from shaking due to the liquid turbulence during the reaction. The column pipe 22 is in a cylindrical shape. The clamping piece 24 is made of elastic material and the upper end and the lower end of the clamping piece 24 are respectively in interference fit with the installation groove 43 and the column pipe 22, or the upper end and the lower end of the clamping piece 24 are respectively connected to the installation groove 43 and the column pipe 22 through threads. Solid MgH2 is arranged between the column pipe 22 and the outer core body 21. The water introduced reacts with the solid MgH2 to generate hydrogen gas, which flows out from the gas outlet 12 at the upper side of the hydrogen generator body 1.

[0040] Preferably, a plurality of vertical extending ribs 31 are arranged on the outer wall of the outer sealing cover 3, and the plurality of vertical extending ribs 31 are uniformly distributed along the circumference of the outer sealing cover 3. A plurality of planes 32 are arranged at the upper side of the outer arm of the outer sealing cover 3, and the plurality of planes 32 are uniformly distributed along the circumference of the outer sealing cover 3, which facilitates tightening by means of tools. A plurality of vertical extending ribs are arranged on the outer wall of the lower sealing cover 7, which increases the friction when manually tightening.

[0041] The above merely describes preferred embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can make several modifications and improvements without departing from the creative concept of the present application, and all should be encompassed within the protection scope of the present application.

Claims

1. A hydrogen tank sealing structure, characterized by, The hydrogen tank body (1) and the first sealing mechanism are provided with a connecting nozzle (11) extending upward on the top of the hydrogen tank body (1), the connecting nozzle (11) is provided with an upper opening, the first sealing mechanism is arranged at the upper opening of the connecting nozzle (11), the first sealing mechanism comprises an outer sealing cover (3) and an inner sealing cover (4), the outer sealing cover (3) is sealingly connected with the outer wall of the connecting nozzle (11) on the outer side of the connecting nozzle (11), and the inner sealing cover (4) is connected to the inner side of the outer sealing cover (3) and sealingly connected with the inner wall of the connecting nozzle (11).

2. The hydrogen tank sealing structure according to claim 1, wherein The outer sealing cover (3) and the outer wall of the connecting nozzle (11) are connected by threads, the top surface of the inner sealing cover (4) and the top surface of the outer sealing cover (3) are connected by bolts (5), and the first elastic sealing assembly (6) is arranged between the inner sealing cover (4) and the inner wall of the connecting nozzle (11).

3. A hydrogen tank sealing structure according to claim 2, wherein The first elastic sealing assembly (6) comprises a first sealing ring (61) and a second sealing ring (62), a first ring groove (41) and a second ring groove (42) are arranged on the outer side of the side wall of the inner sealing cover (4), the first ring groove (41) and the second ring groove (42) are arranged in parallel, and the first sealing ring (61) and the second sealing ring (62) are arranged in the first ring groove (41) and the second ring groove (42) respectively and protrude from the first ring groove (41) and the second ring groove (42).

4. The hydrogen tank sealing structure according to claim 1, wherein The second sealing mechanism comprises a lower sealing cover (7) and a second elastic sealing assembly (8), the lower sealing cover (7) is arranged on the outer side of the connecting nozzle (11) on the lower side of the outer sealing cover (3), a liquid inlet (71) and a plurality of liquid distribution holes (113) are arranged on the lower section of the connecting nozzle (11) corresponding to the lower sealing cover (7), the plurality of liquid distribution holes (113) are uniformly distributed along the circumferential side of the connecting nozzle (11), the second elastic sealing assembly (8) is sealingly connected between the outer wall of the connecting nozzle (11) and the lower sealing cover (7), a shunt channel (9) is formed between the outer wall of the connecting nozzle (11), the second elastic sealing assembly (8) and the lower sealing cover (7), and the shunt channel (9) communicates with the liquid inlet (71) and the plurality of liquid distribution holes (113).

5. A hydrogen tank sealing structure according to claim 4, wherein The second elastic sealing assembly (8) comprises a third sealing ring (81) and a fourth sealing ring (82), the third sealing ring (81) and the fourth sealing ring (82) are arranged on the upper and lower sides of the plurality of distribution holes respectively and are sealingly connected between the outer wall of the connecting nozzle (11) and the lower sealing cover (7), the third ring groove (111) and the fourth ring groove (112) are arranged on the outer wall of the connecting nozzle (11) in parallel, the third ring groove (111) and the fourth ring groove (112) are arranged on the upper and lower sides of the plurality of distribution holes respectively, and the third sealing ring (81) and the fourth sealing ring (82) are connected in the third ring groove (111) and the fourth ring groove (112) respectively.

6. The hydrogen tank sealing structure according to claim 4, wherein Further comprising a core (2), the core (2) comprises an outer core body (21) and an inner column pipe (22), the column pipe (22) is arranged in a gap on the inner side of the outer core body, a clamping table (114) is arranged on the inner side of the connecting nozzle (11), the clamping table (114) is arranged on the lower side of the plurality of distribution holes (113) and is arranged along a circumference of the connecting nozzle (11), a lap joint edge (23) is arranged on the top edge of the outer core body (21) and extends outward, the lap joint edge (23) is arranged along a circumference of the outer core body (21), and the lap joint edge (23) is lapped on the clamping table (114).

7. A hydrogen tank sealing structure according to claim 6, wherein The column pipe (22) is coaxially arranged with the outer core body, an installation groove (43) is arranged on the lower side of the top surface of the inner sealing cover (4), a clamping piece (24) is arranged on the top end of the column pipe (22), the upper end of the clamping piece (24) is connected in the installation groove (43), and the lower end of the clamping piece (24) is connected with the column pipe (22).

8. The hydrogen tank sealing structure according to claim 1, wherein A plurality of vertical extending ribs (31) are arranged on the outer wall of the outer sealing cover (3), the plurality of ribs (31) are uniformly distributed along the circumferential side of the outer sealing cover (3), a plurality of planes (32) are arranged on the upper side of the outer arm of the outer sealing cover (3), and the plurality of planes (32) are uniformly distributed along the circumferential side of the outer sealing cover (3).

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