WO2021102778A1

WO2021102778A1 - Igniter gas bottle with high compressive strength

Info

Publication number: WO2021102778A1
Application number: PCT/CN2019/121513
Authority: WO
Inventors: 邓卫城
Original assignee: 赣州市卫诚火机制造有限公司
Priority date: 2019-11-28
Filing date: 2019-11-28
Publication date: 2021-06-03

Abstract

Disclosed is an igniter gas bottle with high compressive strength, the igniter gas bottle comprising a body (1), a cover (2) and a sealing bowl (3), wherein the outer side of the upper end of the body (1) is provided with an upper outer inclined welding face (11) that inclines inwards, the lower end of the periphery of the cover (2) is in sealed connection with the body (1), the inner side of the lower end of the periphery of the cover (2) is provided with an upper inner inclined welding face (23), and the sealing bowl (3) is arranged at a lower section (213) of a hollow hole (21) of the cover (2). Before the body (1) is welded to the cover (2), the angle of inclination of the upper outer inclined welding face (11) is greater than that of the upper inner inclined welding face (23). With regard to the defect of an existing igniter gas bottle having low compressive strength, the body (1) and the cover (2) of the igniter gas cylinder with high compressive strength are mutually stressed before being welded to each other, and therefore, the upper outer inclined welding face (11) and the upper inner inclined welding face (23) can be better welded into a whole.

Description

Igniter gas cylinder with high compressive strength

Technical field

The utility model belongs to the technical field of igniter gas filling, and particularly relates to an igniter gas cylinder with high pressure resistance strength.

Background technique

The igniter gas cylinder usually includes a body, a cover, a sealing bowl, a valve assembly and a head cover. The device cover is arranged at the upper end of the device body and sealed with the device body, the sealing bowl is arranged at the lower end of the hollow hole of the device cover, the air valve assembly is arranged in the hollow hole of the device cover, and the head cover covers the air valve assembly.

The existing body and cover are usually made of AS resin injection molding, and the body and cover are sealed by welding. Referring to Fig. 7, the existing igniter gas cylinder has a right-angle trapezoid in the cross section of the welding place between the body and the cover, and leakage or even separation between the body and the cover often occurs during the test. The reason is that the maximum thickness a of the welding part of the body and the maximum thickness b of the welding part of the cover are small, which makes the welding strength between the body and the cover insufficient, resulting in low compressive strength. In Figure 7, a is 1.35mm and b is 1.33mm.

Summary of the invention

Aiming at the disadvantage of the low pressure resistance of the existing igniter gas cylinder, the utility model provides an igniter gas cylinder with high pressure resistance, which can effectively improve the welding strength between the body and the cover of the igniter. Further, optimize other structures of the igniter cylinder.

In order to achieve the above-mentioned purpose, the present invention adopts the following technical solution: an igniter gas cylinder with high pressure resistance, and the igniter gas cylinder includes:

A body, the body having a containing chamber capable of accommodating liquefied combustible gas, and the outer side of the upper end of the body has an inwardly inclined upper and outer inclined welding surface;

The device cover is arranged on the upper end of the device body, the lower end of the outer periphery of the cover is sealed with the body, the inner side of the lower end of the outer periphery of the cover has an upper and inner inclined welding surface, and the interior of the cover has a hollow part. The hollow portion has a hollow hole, and the hollow hole includes an upper section, a middle section and a lower section;

A sealed bowl, the sealed bowl is arranged in the lower section of the hollow hole of the cover;

The air valve assembly, the air valve assembly is arranged in the hollow hole;

A head cover, the head cover is arranged on the device cover;

The inclination angle of the upper outer inclined welding surface is larger than the upper inner inclined welding surface, so that the thickness of the welding part of the body and the maximum thickness of the welding part of the cover can be increased.

The igniter gas cylinder with high pressure resistance of the utility model, before the body and the cover are welded, the upper and outer inclined welding surface of the body has an inclination angle, and the inclination angle of the upper and outer inclined welding surface of the body is greater than that of the cover The upper inner inclined welding surface is vertical compared to the welding surface of the body welding part in the prior art, so that the thickness of the body welding part and the thickness of the cover welding part can be increased, effectively improving the gap between the body and the cover. Welding strength and compressive strength are higher.

As an improvement, the body also has an outer vertical surface connected to the upper and outer inclined welding surface and an outer inclined surface connected to the outer vertical surface, and the device cover has an inner vertical surface that is matched with the outer vertical surface. Surface and the inner inclined surface matched with the outer inclined surface.

As an improvement, the inclination angle of the upper outer inclined welding surface is greater than the inclination angle of the outer inclined surface; the inclination angle of the upper inner inclined welding surface is consistent with the inclination angle of the inner inclined surface; the inclination angle of the outer inclined surface is the same as that of the inner inclined surface. The inclination angles of the inclined surfaces are the same.

As an improvement, the inclination angle of the upper outer inclined welding surface is 40°, and the inclination angle of the upper inner inclined welding surface is 18°.

As an improvement, the vertical dimension of the upper outer inclined welding surface section is smaller than the vertical dimension of the upper inner inclined welding surface section; the section size of the outer inclined surface is consistent with the inner inclined surface section size.

As an improvement, there is a middle and inner horizontal plane between the upper and inner inclined welding surface and the inner vertical surface; the section height of the outer vertical surface is greater than the section height of the inner vertical surface.

As an improvement, the body further has a lower outer horizontal plane connected with the lower outer welding inclined surface, the device cover has a lower inner horizontal plane connected with the inner inclined surface, and the lower outer horizontal plane matches the lower inner horizontal plane.

As an improvement, the body and the cover are both made of AS resin injection molding, and the outer edge of the lower end of the hollow part is provided with a cold material head. The cover is integrally injection molded and the lower edge of the hollow part of the cover has a cold material head formed by injection molding, which transfers the weld marks originally generated in the hollow hole of the cover near the sealing bowl to the outer edge of the lower end of the hollow part of the cover to prevent welding The mark has an air leakage effect on the cover, which improves the pressure resistance of the gas cylinder and ensures the sealing effect.

As an improvement, the lower section of the hollow hole has a conical cylindrical sealing surface.

As an improvement, the upper section of the hollow hole is longer than the middle section of the hollow hole, and the diameter of the upper section of the hollow hole is larger than the middle section of the hollow hole.

As an improvement, the air valve assembly includes an air valve string, a sealing ring arranged on the air valve string, a flat gasket and a compression spring, the sealing ring seals the air valve string and the device cover, and the air valve string There is a channel part, the center of the channel part has an air outlet channel with a closed lower end, and the side of the channel part has an air inlet hole communicating with the air outlet channel. During the descending process of the air valve column, the sealing bowl is removed from the lower section of the hollow hole so that Air intake holes can be used for air intake.

As an improvement, the lower end of the valve column has a clamping part, the small-diameter cylindrical section of the clamping part is sealed with the sealing bowl, and the large-diameter section of the clamping part is located below the sealing bowl.

As an improvement, the large-diameter section of the clamping portion has a guiding inclined surface.

As an improvement, the valve column has a matching section that is clearance fit with the upper section of the hollow hole and a mounting section located below the matching section, the outer diameter of the mounting section is smaller than the outer diameter of the matching section, the compression spring, the flat gasket and the sealing ring Set in the upper section of the hollow hole in order from top to bottom.

As an improvement, the upper end of the cover has a step, and the head cover is tightly fitted with the cover.

As an improvement, the lower part of the inner end of the head cover has a plurality of ribs.

The beneficial effects of the igniter gas cylinder with high compressive strength of the utility model are as follows: compared with the prior art, the welding surface of the body welding part is vertical, and the thickness of the body welding part and the thickness of the cover welding part are increased. Large, so that the outer inclined welding surface and the upper inner inclined welding surface can be better welded together.

Description of the drawings

Fig. 1 is a cross-sectional view of the igniter gas cylinder of the first embodiment of the present invention.

Figure 2 is a cross-sectional view of the body of the igniter gas cylinder in the first embodiment of the present invention.

Fig. 3 is a cross-sectional view of the cover of the igniter gas cylinder in the first embodiment of the present invention.

Fig. 4 is a cross-sectional view of the gas valve assembly of the igniter gas cylinder in the first embodiment of the present invention.

Fig. 5 is a cross-sectional view of the gas valve column of the gas valve assembly of the igniter gas cylinder according to the first embodiment of the present invention.

Fig. 6 is a cross-sectional view of the head cover of the igniter gas cylinder of the first embodiment of the present invention.

Fig. 7 is a schematic cross-sectional view of a conventional igniter gas cylinder.

In the figure, 1. body; 11, upper and outer inclined welding surface; 12, outer vertical surface; 13, outer inclined surface; 14, outer horizontal plane; 2. device cover; 21, hollow hole; 211, upper section; 212, Middle section; 213. Lower section; 22. Cold head; 23. Upper and inner inclined welding surface; 24. Middle and inner horizontal plane; 25. Inner vertical plane; 26. Inner inclined plane; 27. Lower inner horizontal plane; 3. Sealed bowl; 4. Air valve assembly; 41, air valve column; 411, channel part; 4111, matching section; 4112, installation section; 4113, air outlet channel; 4114, air inlet; 412, clamping part; 42, compression spring; 43 , Flat gasket; 44, sealing ring; 5. Head cover; 51, convex rib.

Detailed ways

The technical solutions of the embodiments of the present utility model are explained and described below in conjunction with the drawings of the embodiments of the present utility model. However, the following embodiments are only preferred embodiments of the present utility model, and not all of them. Based on the examples in the implementation manners, other examples obtained by those skilled in the art without creative work shall fall within the protection scope of the present invention.

Referring to Figures 1 to 6, the igniter gas cylinder with high pressure resistance of the present invention includes:

The air valve assembly, the air valve assembly is arranged in the hollow hole;

A head cover, the head cover is arranged on the device cover;

In the igniter gas cylinder with high pressure resistance strength of the utility model, before the body and the cover are welded, the upper and outer inclined welding surface of the body has an inclination angle, and the inclination angle of the upper and outer inclined welding surface of the body is larger than that of the cover The upper inner inclined welding surface is vertical compared to the welding surface of the body welding part in the prior art, so that the thickness of the body welding part and the thickness of the cover welding part can be increased, effectively raising the gap between the body and the cover The welding strength is higher, and the compressive strength is higher.

Example one

Referring to Figures 1 to 6, the igniter gas cylinder with high compressive strength according to the first embodiment of the present utility model, the igniter gas cylinder includes:

The body 1, the body 1 has a containing chamber that can accommodate liquefied combustible gas, and the outer side of the upper end of the body 1 has an inwardly inclined upper and outer inclined welding surface 11;

The device cover 2 is provided at the upper end of the device body 1, the lower end of the outer circumference of the device cover 2 is sealed to the body 1, and the inner side of the lower end of the outer circumference of the device cover 2 has an upper and inner inclined welding surface 23. The device cover 2 There is a hollow inside, the hollow part has a hollow hole 21, and the hollow hole 21 includes an upper section 211, a middle section 212 and a lower section 213;

A sealed bowl 3, which is provided in the lower section 213 of the hollow hole 21 of the cover 2;

The air valve assembly 4, the air valve assembly 4 is arranged in the hollow hole 21;

A head cover 5, which is arranged on the device cover 2;

The inclination angle of the upper outer inclined welding surface 11 is greater than that of the upper inner inclined welding surface 23.

Specifically in FIG. 1, the inner diameter of the upper end of the section of the upper outer inclined welding surface 11 is smaller than the inner diameter of the upper end of the section of the upper inner inclined welding surface 23, and the inner diameter of the lower end of the section of the upper outer inclined welding surface 11 is larger than that of the upper inner inclined welding surface 23. The inner diameter of the lower end, the lower end of the section of the upper outer inclined welding surface 11 is higher than the lower end of the section of the upper inner inclined welding surface 23. In Figure 1, a is 1.56mm and b is 1.62mm.

As an improvement, the body 1 also has an outer vertical surface 12 connected to the upper outer inclined welding surface 11 and an outer inclined surface 13 connected to the outer vertical surface 12, and the device cover 2 has an outer vertical surface 12 connected to the outer vertical surface. The inner vertical surface 25 matched with the surface 12 and the inner inclined surface 26 matched with the outer inclined surface 13.

As an improvement, the inclination angle of the upper outer inclined welding surface 11 is greater than the inclination angle of the outer inclined surface 13; the inclination angle of the upper inner inclined welding surface 23 is consistent with the inclination angle of the inner inclined surface 26; the outer inclined surface 13 The inclination angle of is consistent with the inclination angle of the inner inclined surface 26.

As an improvement, the inclination angle of the upper outer inclined welding surface 11 is 40°, and the inclination angle of the upper inner inclined welding surface 23 is 18°.

As an improvement, the vertical dimension of the section of the upper outer inclined welding surface 11 is smaller than the vertical dimension of the section of the upper inner inclined welding surface 23; the section size of the outer inclined surface 13 is consistent with the section size of the inner inclined surface 26.

As an improvement, there is a middle and inner horizontal plane 24 between the upper inner inclined welding surface 23 and the inner vertical surface 25; the section height of the outer vertical surface 12 is greater than the section height of the inner vertical surface 25.

As an improvement, the body 1 further has a lower outer horizontal plane 14 connected with the lower outer welding inclined surface, the device cover 2 has a lower inner horizontal plane 27 connected with the inner inclined surface 26, the lower outer horizontal plane 14 and The lower inner horizontal plane 27 matches.

As an improvement, as an improvement, the body 1 and the cover 2 are both made of AS resin injection molding, and the outer edge of the lower end of the hollow part has a cold material head 22. The cover 2 is integrally injection molded, and the outer edge of the lower end of the hollow part of the cover 2 has a cold material head 22 formed by injection molding, which transfers the weld marks originally generated in the hollow hole 21 of the cover 2 adjacent to the sealing bowl 3 to the hollow part of the cover 2 At the outer edge of the lower end, the welding marks are prevented from causing air leakage on the cover 2, which improves the pressure resistance of the gas cylinder and ensures the sealing effect.

As an improvement, the lower section 213 of the hollow hole 21 has a conical cylindrical sealing surface.

As an improvement, the upper section 211 of the hollow hole 21 is longer than the middle section 212 of the hollow hole 21, and the upper section 211 of the hollow hole 21 has a larger diameter than the middle section 212 of the hollow hole 21.

As an improvement, the air valve assembly 4 includes an air valve column 41, a sealing ring 44 arranged on the air valve column 41, a flat gasket 43 and a compression spring 42. The sealing ring 44 connects the air valve column 41 and the device cover 2 The air valve stem 41 has a channel portion 411, the center of the channel portion 411 has an air outlet channel 4113 with a closed lower end, and the side of the channel portion 411 has an air inlet 4114 communicating with the air outlet channel 4113. During the descending process of the spool 41, the sealing bowl 3 is removed from the lower section 213 of the hollow hole 21 so that the air inlet hole 4114 can take in air.

As an improvement, the lower end of the valve column 41 has a clamping portion 412, a small-diameter cylindrical section of the clamping portion 412 is sealed with the sealing bowl 3, and a large-diameter section of the clamping portion 412 is located below the sealing bowl 3.

As an improvement, the large-diameter section of the clamping portion 412 has a guiding inclined surface.

As an improvement, the valve column 41 has a matching section 4111 that is clearance fit with the upper section 211 of the hollow hole 21 and a mounting section 4112 located below the matching section 4111. The outer diameter of the mounting section 4112 is smaller than the outer diameter of the matching section 4111. The spring 42, the flat washer 43 and the sealing ring 44 are arranged in the upper section 211 of the hollow hole 21 in order from top to bottom.

As an improvement, the upper end of the cover 2 has a step, and the head cover 5 is tightly fitted with the cover 2.

As an improvement, the lower part of the inner end of the head cover 5 has a plurality of ribs 51.

The beneficial effects of the igniter gas cylinder with high compressive strength according to the first embodiment of the present invention are as follows: Compared with the welding surface of the body in the prior art, the welding surface of the body 1 is changed in this embodiment. It is the upper and outer inclined welding surface 11, and the inclination angle of the upper and outer inclined welding surface 11 is larger than the upper inner inclined welding surface 23 of the cover 2, which increases the thickness a of the welding part of the body 1 and the thickness b of the welding part of the cover 2. The strength of the welded structure between the lifter body 1 and the cover 2 improves the pressure resistance.

Claims

The igniter gas cylinder with high compressive strength is characterized in that the igniter gas cylinder includes:

The body (1), the body (1) has a containing chamber that can contain liquefied combustible gas, and the outer side of the upper end of the body (1) has an inwardly inclined upper and outer inclined welding surface (11);

The device cover (2), the device cover (2) is arranged at the upper end of the device body (1), the lower end of the outer circumference of the device cover (2) is sealed to the body (1), and the inner side of the lower end of the outer circumference of the device cover (2) It has an upper inner inclined welding surface (23), the inside of the cover (2) has a hollow part, the hollow part has a hollow hole (21), and the hollow hole (21) includes an upper section (211) and a middle section (212) And the next paragraph (213);

A sealed bowl (3), the sealed bowl (3) is arranged in the lower section (213) of the hollow hole (21) of the device cover (2);

The air valve assembly (4), the air valve assembly (4) is arranged in the hollow hole (21);

A head cover (5), the head cover (5) is arranged on the device cover (2);

The inclination angle of the upper outer inclined welding surface (11) is greater than the upper inner inclined welding surface (23), so that the thickness of the welded part of the body (1) and the maximum thickness of the welded part of the cover (2) can be increased .
The igniter gas cylinder with high compressive strength according to claim 1, characterized in that: the body (1) also has an outer vertical surface (12) connected with an upper outer inclined welding surface (11) and The outer inclined surface (13) connected with the outer vertical surface (12), the device cover (2) has an inner vertical surface (25) matched with the outer vertical surface (12) and an outer inclined surface (13) ) Mating inner inclined surface (26).
The igniter gas cylinder with high compressive strength according to claim 2, characterized in that: the inclination angle of the upper outer inclined welding surface (11) is greater than the inclination angle of the outer inclined surface (13); the upper inner inclined surface The inclination angle of the welding surface (23) is consistent with the inclination angle of the inner inclined surface (26); the inclination angle of the outer inclined surface (13) is consistent with the inclination angle of the inner inclined surface (26).
The igniter gas cylinder with high compressive strength according to claim 3, characterized in that the inclination angle of the upper outer inclined welding surface (11) is 40°, and the upper inner inclined welding surface (23) has an inclination angle of 40°. The angle is 18°.
The igniter gas cylinder with high compressive strength according to claim 3, wherein the vertical dimension of the upper outer inclined welding surface (11) is smaller than the vertical dimension of the upper inner inclined welding surface (23). The cross-sectional size of the outer inclined surface (13) is consistent with the cross-sectional size of the inner inclined surface (26).
The igniter gas cylinder with high compressive strength according to claim 3, characterized in that: there is a middle inner horizontal plane (24) between the upper inner inclined welding surface (23) and the inner vertical surface (25); The cross-sectional height of the outer vertical surface (12) is greater than the cross-sectional height of the inner vertical surface (25).
The igniter gas cylinder with high compressive strength according to claim 1, characterized in that: the body (1) also has a lower outer horizontal plane (14) connected with the lower outer welding inclined surface, and the cover (2) There is a lower inner horizontal plane (27) connected with the inner inclined surface (26), and the lower outer horizontal plane (14) and the lower inner horizontal plane (27) are matched.
The igniter gas cylinder with high compressive strength according to claim 1, wherein the body (1) and the cover (2) are both made of AS resin injection molding.
The igniter gas cylinder with high compressive strength according to claim 8, wherein the outer edge of the lower end of the hollow part has a cold material head (22).
The igniter gas cylinder with high pressure resistance according to claim 1, characterized in that: the gas valve assembly (4) comprises a gas valve column (41), and a sealing ring (4) arranged on the gas valve column (41). 44), a flat gasket (43) and a compression spring (42). The sealing ring (44) seals the valve stem (41) and the device cover (2), and the valve stem (41) has a passage Part (411), the center of the channel part (411) has an air outlet channel (4113) with a closed lower end, and the side of the channel part (411) has an air inlet hole (4114) communicating with the air outlet channel (4113). During the descending process of the spool (41), the sealing bowl (3) is moved out of the lower section (213) of the hollow hole (21) so that the air inlet hole (4114) can take in air.