Emergency discharge assembly of high-pressure hydrogen valve body

Abstract

The utility model belongs to the technical field of valve bodies, and particularly relates to a high-pressure hydrogen valve body emergency discharge assembly which comprises a first valve block and a second valve block, an installation hole is formed in the upper side face of the first valve block, an exhaust hole communicated with the installation hole is formed in the lower end of the first valve block, and external threads are formed in the outer side face of the first valve block. The second valve block comprises a first cylinder and a second cylinder connected to the upper end of the first cylinder, the first cylinder is slidably connected into the mounting hole, a first sealing groove is formed in the outer side face of the first cylinder, a first sealing piece is mounted in the first sealing groove, a guide hole is formed in the lower side face of the first cylinder, a glass bulb is arranged in the mounting hole, and the upper end of the glass bulb abuts against the interior of the guide hole. The lower end of the glass bulb abuts against the bottom of the mounting hole, a positioning hole is formed in the guide hole, a protruding part is arranged at the upper end of the glass bulb and inserted into the positioning hole, positioning and mounting of the glass bulb are facilitated through the guide hole and the positioning hole, and meanwhile the glass bulb can be observed through the air hole and is prevented from being broken due to stress during mounting.

Description

TECHNICAL FIELD

[0001] The utility model belongs to valve body technical field, especially, relate to a high pressure hydrogen valve body emergency discharge assembly. BACKGROUND

[0002] With the increasing demand for clean energy in the world, hydrogen energy as a kind of efficient, clean energy carrier, gradually receives widespread attention in the field of application of automobile. Hydrogen energy automobile uses hydrogen as fuel, in the hydrogen energy automobile hydrogen supply system, the valve of high pressure hydrogen bottle mouth plays a vital role, the existing high pressure hydrogen pressure stabilizing valve is basically equipped with emergency discharge assembly, the existing emergency discharge assembly is generally through setting temperature sensing glass assembly, temperature sensing glass assembly breaks and controls the opening of emergency discharge assembly, but temperature sensing glass assembly is very fragile, and it is easy to produce inclination in the installation process, and the inclined temperature sensing glass assembly is easy to cause extrusion and break, and the stress extrusion of the inclined temperature sensing glass assembly is too large in the case of not breaking, which also affects the effectiveness of temperature sensing glass assembly, for the convenience of installing emergency discharge assembly, a high pressure hydrogen valve body emergency discharge assembly with simple structure can be quickly installed in place and avoid the breakage of temperature sensing glass assembly. SUMMARY

[0003] In view of the above problems, the utility model provides a high pressure hydrogen valve body emergency discharge assembly, which solves the problems in the prior art.

[0004] In order to achieve the above purpose, the utility model adopts the following technical scheme: a high pressure hydrogen valve body emergency discharge assembly, including valve block one and valve block two, the upper side of valve block one is provided with a mounting hole, the lower end of valve block one is provided with an exhaust hole communicated with the mounting hole, the outer side of valve block one is provided with an external thread, valve block two includes a cylinder one and a cylinder two connected to the upper end of the cylinder one, the cylinder one is slidingly connected in the mounting hole, the outer side of the cylinder one is provided with a sealing groove one, the sealing groove one is provided with a sealing element one, the lower side of the cylinder one is provided with a guide hole, the mounting hole is provided with a glass bulb, the upper end of the glass bulb abuts in the guide hole, the lower end of the glass bulb abuts the bottom of the mounting hole, the diameter of the cylinder two is less than that of the cylinder one, the outer side of the cylinder two is provided with a sealing groove two, the sealing groove two is provided with a sealing element two, the guide hole is provided with a positioning hole, the upper end of the glass bulb is provided with a protruding part, the protruding part is inserted into the positioning hole, the guide hole is provided with a positioning hole, the upper end of the glass bulb is provided with a protruding part, and the protruding part is inserted into the positioning hole.

[0005] Further, the top end of the protruding part is semispherical, and the connecting part of the protruding part and the glass bulb is arc-shaped transition.

[0006] Further, the lower end of the glass bubble is spherical, and the exhaust hole is provided with an arc-shaped chamfer at one end of the mounting hole, and the lower end of the glass bubble abuts against the arc-shaped chamfer.

[0007] Further, a waterproof air-permeable plug is mounted at the lower end of the exhaust hole.

[0008] Further, a buffer gasket is sleeved on the second column body, and the buffer gasket is located at the connection between the first column body and the second column body.

[0009] Further, a limiting boss is arranged on the outer side surface of the valve block one, and a sealing groove three is arranged on the outer side surface of the valve block one and located above the limiting boss.

[0010] Further, the lower end of the valve block one is a prismatic column.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] The utility model discloses a positioning hole is arranged in the guide hole, and the protruding part arranged on the glass bubble is cooperated, and the positioning and installation of the glass bubble are more convenient, the glass bubble is prevented from being inclined in the process of installing the glass bubble, the installation is more accurate, the glass bubble state can be directly observed through the air hole, whether the glass bubble is inclined is judged, so that the glass bubble is prevented from being broken under stress during installation, and the buffer gasket sleeved on the second column body is cooperated with the sliding of the valve block one and the valve block two, and plays a buffering role and prevents the glass bubble from being stressed during installation. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 It is the internal structure section view of the utility model;

[0014] Fig. 2 It is the three-dimensional structure schematic view of the utility model.

[0015] In the drawing: 1, valve block one;2, valve block two;21, first column body;22, second column body;3, mounting hole;4, exhaust hole;5, sealing groove one;6, sealing piece one;7, guide hole;8, glass bubble;9, sealing groove two;10, sealing piece two;11, positioning hole;12, protruding part;13, waterproof air-permeable plug;14, buffer gasket;15, limiting boss;16, sealing groove three. DETAILED DESCRIPTION

[0016] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model. Apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0017] As shown in Figs. 1-2 A high-pressure hydrogen valve body emergency discharge assembly, comprising a valve block one 1 and a valve block two 2, the valve block one 1 and the valve block two 2 are both cylindrical, the upper side of the valve block one 1 is provided with a mounting hole 3, the mounting hole 3 is vertically provided from the upper side of the valve block one 1 to the lower side, the lower end of the valve block one 1 is provided with an exhaust hole 4 communicating with the mounting hole 3, the outer side of the valve block one 1 is provided with external threads, the valve block two 2 comprises a cylinder one 21 and a cylinder two 22 integrally connected to the upper end of the cylinder one 21, the lower end of the cylinder one 21 is in contact with the inner side of the mounting hole 3 and is slidingly connected in the mounting hole 3, the outer side of the cylinder one 21 is provided with a sealing groove one 5, the sealing groove one 5 is provided with a sealing element one 6, the sealing element one 6 can be a sealing ring or a sealing gasket, the lower side of the cylinder one 21 is provided with a guide hole 7, the guide hole 7 is vertically provided from the center of the lower side of the cylinder to the upper side, the mounting hole 3 is provided with a glass bulb 8, the upper end of the glass bulb 8 abuts in the guide hole 7, the lower end of the glass bulb 8 abuts the bottom of the mounting hole 3, the diameter of the cylinder two 22 is smaller than that of the cylinder one 21, the outer side of the cylinder two 22 is provided with a sealing groove two 9, the sealing groove two 9 is provided with a sealing element two 10, the guide hole 7 is provided with a positioning hole 11, the positioning hole 11 is coaxially arranged with the guide hole 7, the upper end of the glass bulb 8 is provided with a protruding part 12, the protruding part 12 is inserted into the positioning hole 11.

[0018] In this embodiment, the top end of the protruding part 12 is hemispherical, the hemispherical protruding part 12 facilitates the installation of the upper end of the glass bulb 8 in the positioning hole 11, the connection part of the protruding part 12 and the glass bulb 8 is arc-shaped, which makes the glass bulb 8 automatically centered and kept vertical during installation.

[0019] In this embodiment, the lower end of the glass bulb 8 is spherical, one end of the exhaust hole 4 communicating with the mounting hole 3 is provided with an arc-shaped chamfer, the lower end of the glass bulb 8 abuts the arc-shaped chamfer, which facilitates the observation of the state of the glass bulb 8 through the exhaust hole 4 and makes the abutment of the lower end of the glass bulb 8 more stable.

[0020] In this embodiment, the lower end of the exhaust hole 4 is provided with a waterproof and breathable plug 13, the inner wall of the exhaust hole 4 can be provided with internal threads, and a waterproof and breathable plug as disclosed in CN201059529Y is used for installation by threaded connection.

[0021] In this embodiment, a buffer gasket 14 is sleeved on the cylinder two 22, the buffer gasket 14 is located at the connection between the cylinder one 21 and the cylinder two 22, and during installation, the cylinder two 22 is inserted through the buffer gasket 14 to determine whether it is inserted in place, and the buffer effect of the buffer gasket 14 reduces the direct stress on the glass bulb 8.

[0022] In the embodiment, the outer side of the valve block one 1 is integrally connected with a limiting boss 15, and the outer side of the valve block one 1 is provided with a sealing groove three 16, which is located above the limiting boss 15.

[0023] In the embodiment, the lower end of the valve block one 1 is a prismatic column, which can be conveniently screwed with the valve body by a wrench or the like.

[0024] In the embodiment, in working, the column two 22 is inserted into the channel of the valve body which needs to be sealed, the valve block two 2 is threadedly connected with the valve body, when the temperature reaches the glass bubble 8 breaking temperature, the glass bubble 8 breaks, at the same time, the column two 22 is retracted under pressure into the mounting hole 3, so that the channel is in an open state, and the gas in the mounting hole 3 extruded by the column two 22 is discharged outside through the exhaust hole 4 and the waterproof air permeable plug 13.

[0025] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A high pressure hydrogen valve body emergency vent assembly, characterized by: The utility model provides a valve block, which comprises a valve block one and a valve block two, the upper side of the valve block one is provided with a mounting hole, the lower end of the valve block one is provided with an exhaust hole communicated with the mounting hole, the outer side of the valve block one is provided with an external thread, the valve block two comprises a column body one and a column body two connected to the upper end of the column body one, the column body one is slidingly connected in the mounting hole, the outer side of the column body one is provided with a sealing groove one, the sealing groove one is provided with a sealing piece one, the lower side of the column body one is provided with a guide hole, the mounting hole is provided with a glass bubble, the upper end of the glass bubble abuts in the guide hole, the lower end of the glass bubble abuts the bottom of the mounting hole, the diameter of the column body two is less than that of the column body one, the outer side of the column body two is provided with a sealing groove two, the sealing groove two is provided with a sealing piece two, the guide hole is provided with a positioning hole, the upper end of the glass bubble is provided with a convex part, and the convex part is inserted into the positioning hole.

2. The high pressure hydrogen valve body emergency vent assembly of claim 1, wherein: The top end of the convex part is semispherical, and the connecting part of the convex part and the glass bubble is arc-shaped.

3. The high pressure hydrogen valve body emergency vent assembly of claim 1, wherein: The lower end of the glass bubble is spherical, one end of the exhaust hole communicated with the mounting hole is provided with an arc-shaped chamfer, and the lower end of the glass bubble abuts the arc-shaped chamfer.

4. The high pressure hydrogen valve body emergency vent assembly of claim 1, wherein: The lower end of the exhaust hole is provided with a waterproof air-permeable plug.

5. The high pressure hydrogen valve body emergency vent assembly of claim 1, wherein: The column body two is provided with a buffer gasket, and the buffer gasket is located at the connecting part of the column body one and the column body two.

6. The high pressure hydrogen valve body emergency vent assembly of claim 1, wherein: The outer side of the valve block one is provided with a limiting boss, and the outer side of the valve block one is provided with a sealing groove three, which is located above the limiting boss.

7. The high pressure hydrogen valve body emergency vent assembly of claim 1, wherein: The lower end of the valve block one is a prismatic column.

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