CN220186525U - Bottle valve - Google Patents

Abstract

The utility model provides a bottle valve, comprising: the valve body is provided with a connecting hole, the connecting hole is provided with a first end and a second end which are oppositely arranged, and the first end of the connecting hole is used for being communicated with a hydrogen cylinder; the temperature sensor is arranged at the first end of the connecting hole; the first fixing sleeve is arranged between the temperature sensor and the inner wall of the connecting hole, is in interference fit with the connecting hole, and is provided with a limiting structure between the first fixing sleeve and the temperature sensor so as to fix the temperature sensor in the connecting hole; and the sealing component is arranged between the temperature sensor and the connecting hole and is arranged close to the second end of the connecting hole relative to the first fixing sleeve. By the technical scheme provided by the utility model, the problems that the temperature sensor in the prior art is difficult to install and the sealing assembly is easy to wear can be solved.

Description

Bottle valve

Technical Field

The utility model relates to the technical field of bottle valves, in particular to a bottle valve.

Background

At present, in on-vehicle hydrogen storage system field, the import of hydrogen cylinder is installed the bottle valve, and the bottle valve includes valve body and temperature sensor, and temperature sensor fixes on the valve body, and temperature sensor can real-time detection hydrogen cylinder internal temperature.

In the prior art, when the temperature sensor is fixed on the valve body, a threaded structure such as a nut is generally adopted to fix the temperature sensor, that is, the temperature sensor is fixed on the nut, and the nut is in threaded connection with the valve body. However, due to the fact that the nut is large in size, interference is easily generated between the nut and other elements in the bottle valve, and the temperature sensor is inconvenient to install and fix. Meanwhile, in order to ensure sealing, a sealing component is arranged between the temperature sensor and the valve body, but when the temperature sensor is fixed by adopting a nut, the temperature sensor can drive the sealing component to synchronously rotate in the shell, so that friction is generated between the sealing component and the valve body, and the possibility of abrasion of the sealing component is increased.

The patent document with the application number 202220403951.3 discloses a temperature sensor for a bottleneck valve of a fuel cell automobile, and specifically discloses the temperature sensor for the bottleneck valve of the fuel cell automobile, which comprises a sensor and a valve body, wherein a cavity for accommodating the sensor is arranged in the valve body, and the sensor is arranged in the cavity in the valve body through an embedded nut; the sensor is provided with a plurality of grooves, the number of the grooves is two, and a first sealing ring and a second sealing ring are arranged in the grooves. So set up, embedded nut's volume is great, is inconvenient for installing fixedly temperature sensor, and when installing temperature sensor simultaneously, first sealing washer and second sealing washer very easily produce wearing and tearing.

Disclosure of Invention

The utility model provides a bottle valve, which solves the problems that a temperature sensor in the prior art is difficult to install and a sealing component is easy to wear.

The utility model provides a bottle valve, comprising: the valve body is provided with a connecting hole, the connecting hole is provided with a first end and a second end which are oppositely arranged, and the first end of the connecting hole is used for being communicated with a hydrogen cylinder; the temperature sensor is arranged at the first end of the connecting hole; the first fixing sleeve is arranged between the temperature sensor and the inner wall of the connecting hole, is in interference fit with the connecting hole, and is provided with a limiting structure between the first fixing sleeve and the temperature sensor so as to fix the temperature sensor in the connecting hole; and the sealing component is arranged between the temperature sensor and the connecting hole and is arranged close to the second end of the connecting hole relative to the first fixing sleeve.

Further, one end that the first fixed cover is close to the second end of connecting hole is provided with first spacing section, and the direction that the internal radial direction of first spacing section is close to the second end of connecting hole increases gradually, is provided with the spacing section of second on the temperature sensor, and the diameter of the spacing section of second increases gradually to the direction that is close to the second end of connecting hole, and the spacing section of second and the looks butt of first spacing section, and first spacing section and the spacing section of second cooperate and form limit structure.

Further, a first included angle is formed between the inner side wall of the first limiting section and the axis of the connecting hole, a second included angle is formed between the outer side wall of the second limiting section and the axis of the connecting hole, and the difference between the first included angle and the second included angle is between 1 and 3 degrees.

Further, the sealing assembly comprises a first sealing structure and a second sealing structure, and the first sealing structure and the second sealing structure are arranged at intervals along the axial direction of the temperature sensor.

Further, the second end setting that the connecting hole was kept away from to first seal structure relative second seal structure, and first seal structure includes first sealing washer, and second seal structure includes second sealing washer and retaining ring, and the retaining ring is close to the second end setting of connecting hole relative second sealing washer, and the retaining ring can carry out axial spacing to the second sealing washer.

Further, the bottle valve further includes: the wire harness is arranged in the connecting hole, one end of the wire harness is connected with the temperature sensor, and the other end of the wire harness extends to the second end of the connecting hole; and the fixing assembly is arranged at the second end of the connecting hole so as to fix the wire harness.

Further, the fixed subassembly includes the shutoff piece, and the shutoff piece sets up in the connecting hole, shutoff piece and connecting hole interference fit are provided with first through-hole on the shutoff piece, and the pencil is worn to establish in first through-hole.

Further, the fixed subassembly still includes the fixed cover of second, and the first end setting of connecting hole is kept away from to the relative shutoff piece of the fixed cover of second, and the fixed cover of second includes interconnect's linkage segment and fixed section, and the external diameter of fixed section is greater than the external diameter of linkage segment, and the linkage segment setting is in the connecting hole, linkage segment and connecting hole interference fit, linkage segment and shutoff piece looks butt, and fixed section is located the outside of connecting hole, and the terminal surface looks butt of fixed section and valve body.

Further, the connecting hole comprises a first stepped hole, a second stepped hole and a third stepped hole which are communicated sequentially, the first stepped hole is formed in the first end of the connecting hole, the third stepped hole is formed in the second end of the connecting hole, the diameter of the second stepped hole is smaller than that of the first stepped hole and that of the third stepped hole, and the temperature sensor is abutted to a stepped surface between the first stepped hole and the second stepped hole.

Further, the first fixing sleeve and the second fixing sleeve are both made of nylon materials.

By applying the technical scheme of the utility model, one end of the temperature sensor is arranged at the first end of the connecting hole of the valve body, the first fixing sleeve is in interference fit with the connecting hole, meanwhile, the temperature sensor is fixed through the limiting structure between the first fixing sleeve and the temperature sensor, and the sealing assembly is arranged between the temperature sensor and the connecting hole so as to seal a gap between the connecting hole and the temperature sensor and avoid hydrogen leakage. By adopting the structure, the first fixing sleeve is small in structural size, is not easy to interfere with other elements in the bottle valve, and is convenient for fixing the temperature sensor. Simultaneously, can avoid seal assembly to rotate in the connecting hole to can avoid producing the friction because of rotating between seal assembly and the inner wall of connecting hole, avoid seal assembly to produce wearing and tearing, improve seal assembly's life, guarantee seal assembly's sealed effect.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

fig. 1 shows a schematic structural view of a bottle valve provided according to an embodiment of the present utility model;

FIG. 2 shows a partial enlarged view at A in FIG. 1;

fig. 3 shows a partial enlarged view at B in fig. 1.

Wherein the above figures include the following reference numerals:

10. a valve body; 11. a connection hole; 111. a first stepped hole; 112. a second stepped hole; 113. a third stepped hole;

20. a temperature sensor; 21. The second limiting section;

30. a first fixing sleeve; 31. A first limit section;

40. a seal assembly; 411. a first seal ring; 42. a second sealing structure; 421. a second seal ring; 422. a retainer ring;

50. a wire harness;

60. a fixing assembly; 61. a blocking member; 62. a second fixing sleeve; 621. a connection section; 622. and (5) fixing the section.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1 to 3, the present utility model provides a cylinder valve including a valve body 10, a temperature sensor 20, a first fixing sleeve 30, and a sealing assembly 40. The valve body 10 is provided with a connecting hole 11, the connecting hole 11 has a first end and a second end which are oppositely arranged, and the first end of the connecting hole 11 is used for communicating with a hydrogen cylinder. The temperature sensor 20 is provided at a first end of the connection hole 11 to detect the temperature in the hydrogen cylinder. The first fixing sleeve 30 is disposed between the temperature sensor 20 and the inner wall of the connecting hole 11, the first fixing sleeve 30 is in interference fit with the connecting hole 11, and a limiting structure is disposed between the first fixing sleeve 30 and the temperature sensor 20 to fix the temperature sensor 20 in the connecting hole 11. The sealing assembly 40 is disposed between the temperature sensor 20 and the connection hole 11, and the sealing assembly 40 is disposed near the second end of the connection hole 11 with respect to the first fixing sleeve 30. In the present utility model, one end of the temperature sensor 20 is disposed at the first end of the connection hole 11, and the other end of the temperature sensor 20 extends into the hydrogen cylinder.

According to the technical scheme, one end of the temperature sensor 20 is arranged at the first end of the connecting hole 11 of the valve body 10, the first fixing sleeve 30 is in interference fit with the connecting hole 11, meanwhile, the temperature sensor 20 is fixed through the limiting structure between the first fixing sleeve 30 and the temperature sensor 20, and the sealing assembly 40 is arranged between the temperature sensor 20 and the connecting hole 11 so as to seal a gap between the connecting hole 11 and the temperature sensor 20 and avoid hydrogen leakage. With the above structure, the first fixing sleeve 30 has a small size, is not easy to interfere with other elements in the bottle valve, and is convenient for fixing the temperature sensor 20. Simultaneously, can avoid seal assembly 40 to rotate in connecting hole 11 to can avoid seal assembly 40 and the inner wall of connecting hole 11 to produce the friction because of rotating between, avoid seal assembly 40 to produce wearing and tearing, improve seal assembly 40's life, guarantee seal assembly 40's sealed effect.

As shown in fig. 3, one end of the first fixing sleeve 30, which is close to the second end of the connecting hole 11, is provided with a first limiting section 31, the direction of the inner radial direction of the first limiting section 31, which is close to the second end of the connecting hole 11, is gradually increased, the temperature sensor 20 is provided with a second limiting section 21, the diameter of the second limiting section 21 is gradually increased towards the direction, which is close to the second end of the connecting hole 11, the second limiting section 21 is abutted against the first limiting section 31, and the first limiting section 31 and the second limiting section 21 are matched to form a limiting structure. Wherein in the present utility model, the temperature sensor 20 is clearance fit with the first stationary sleeve 30. By adopting the structure, the temperature sensor 20 is convenient to fix, the structure is simple, and the operation is convenient. Meanwhile, the first fixing sleeve 30 and the temperature sensor 20 are sealed in a conical manner, the contact surface between the first fixing sleeve 30 and the temperature sensor 20 can be reduced, the sealing performance is in direct proportion to the internal pressure of the hydrogen cylinder on the premise that the sealing specific pressure acting on the inner side wall of the first limiting section 31 is smaller than the allowable specific pressure, the bigger the internal pressure of the hydrogen cylinder is, the better the sealing performance is, foreign matters in the hydrogen cylinder are prevented from entering the cylinder valve, the high pressure born by the sealing assembly 40 can be relieved, the sealing effect of the sealing assembly 40 is guaranteed, and the service life of the sealing assembly 40 is prolonged.

Further, a first included angle is formed between the inner side wall of the first limiting section 31 and the axis of the connecting hole 11, a second included angle is formed between the outer side wall of the second limiting section 21 and the axis of the connecting hole 11, and the difference between the first included angle and the second included angle is between 1 ° and 3 °. By the arrangement, the first limiting section 31 and the second limiting section 21 can form a linear seal, and the sealing effect between the first limiting section 31 and the second limiting section 21 is further improved. When the difference between the first included angle and the second included angle is smaller than 1 °, the contact area between the inner side wall of the first limiting section 31 and the outer side wall of the second limiting section 21 is larger, so that the sealing between the temperature sensor 20 and the first fixing sleeve 30 is affected; when the difference between the first included angle and the second included angle is larger than 3 degrees, the contact area between the inner side wall of the first limiting section 31 and the outer side wall of the second limiting section 21 is too small, and a gap is easily generated between the first limiting section 31 and the second limiting section 21, so that the sealing between the temperature sensor 20 and the first fixing sleeve 30 is affected; therefore, the difference between the first included angle and the second included angle is set between 1 ° and 3 °, so that the sealing between the temperature sensor 20 and the first fixing sleeve 30 can be ensured, and hydrogen leakage is avoided. Wherein, the difference between the first included angle and the second included angle can be set to 1 degree, 2 degrees or 3 degrees, and in the utility model, the difference between the first included angle and the second included angle is set to 2 degrees.

As shown in fig. 2, the seal assembly 40 includes a first seal structure and a second seal structure 42, the first seal structure and the second seal structure 42 being disposed at intervals along the axial direction of the temperature sensor 20. So set up, can guarantee the seal between temperature sensor 20 and the connecting hole 11, avoid revealing of hydrogen, first seal structure can slow down the high pressure that second seal structure 42 bore simultaneously, guarantee the sealed effect of second seal structure 42, improve second seal structure 42's life.

In the present utility model, a first groove and a second groove are axially disposed on the sidewall of the temperature sensor 20 at intervals, the first groove and the second groove are both disposed on the sidewall of the temperature sensor 20 in a ring shape, the first sealing structure is disposed in the first groove, and the second sealing structure 42 is disposed in the second groove, so that the first sealing structure and the second sealing structure 42 are convenient to be installed and fixed.

Specifically, the first sealing structure is disposed away from the second end of the connection hole 11 with respect to the second sealing structure 42, and the first sealing structure includes a first seal 411. The second sealing structure 42 includes a second sealing ring 421 and a retainer ring 422, where the retainer ring 422 is disposed near the second end of the connection hole 11 relative to the second sealing ring 421, and the retainer ring 422 can axially limit the second sealing ring 421. So set up, first sealing washer 411 can slow down the high pressure that second sealing washer 421 bore, guarantees the sealed effect of second sealing washer 421, improves the life of second sealing washer 421, and retaining ring 422 can avoid second sealing washer 421 to be extruded to the space between temperature sensor 20 and the connecting hole 11 by high pressure in simultaneously, further guarantees the sealed effect of second sealing washer 421.

The bottle valve further includes, among other things, a wiring harness 50 and a securing assembly 60. The wire harness 50 is provided in the connection hole 11, one end of the wire harness 50 is connected to the temperature sensor 20, and the other end of the wire harness 50 extends to the second end of the connection hole 11. The fixing member 60 is provided at the second end of the connection hole 11 to fix the wire harness 50. So set up, be convenient for fix pencil 50, guarantee the normal connection of pencil 50 and other components, avoid pencil 50 landing.

Specifically, the fixing assembly 60 includes a blocking member 61, the blocking member 61 is disposed in the connection hole 11, the blocking member 61 is in interference fit with the connection hole 11, a first through hole is disposed on the blocking member 61, and the wire harness 50 is inserted into the first through hole. So set up, be convenient for fix pencil 50, simple structure, the operation of being convenient for can avoid impurity to fall into in the connecting hole 11 simultaneously. In the present utility model, a plurality of annular protrusions are annularly disposed on the side wall of the blocking member 61, and the annular protrusions are in interference fit with the connection holes 11, so that the detachment and installation of the blocking member 61 are facilitated. Alternatively, the blocking member 61 may be a waterproof plug, and the blocking member 61 may be made of rubber.

Further, the fixing assembly 60 further comprises a second fixing sleeve 62, the second fixing sleeve 62 is arranged at a first end of the connecting hole 11 away from the blocking piece 61, the second fixing sleeve 62 comprises a connecting section 621 and a fixing section 622 which are connected with each other, the outer diameter of the fixing section 622 is larger than that of the connecting section 621, the connecting section 621 is arranged in the connecting hole 11, the connecting section 621 is in interference fit with the connecting hole 11, the connecting section 621 is abutted against the blocking piece 61, the fixing section 622 is located outside the connecting hole 11, and the fixing section 622 is abutted against the end face of the valve body 10. So set up, the shutoff piece 61 can be avoided to the second fixed cover 62 drops, guarantees the fixed effect to pencil 50. Meanwhile, the second fixing sleeve 62 is convenient to detach and mount, and is convenient to operate. Wherein, in the prior art, the second fixing sleeve 62 is generally screw-coupled with the coupling hole 11 to fix the blocking member 61. However, in the present utility model, the second fixing sleeve 62 has a small size, and is not likely to interfere with other elements in the cylinder valve, thereby facilitating the fixing of the blocking member 61.

Wherein, the connecting hole 11 includes a first stepped hole 111, a second stepped hole 112 and a third stepped hole 113 that communicate in order, the first stepped hole 111 is disposed at a first end of the connecting hole 11, the third stepped hole 113 is disposed at a second end of the connecting hole 11, a diameter of the second stepped hole 112 is smaller than a diameter of the first stepped hole 111 and a diameter of the third stepped hole 113, and the temperature sensor 20 is abutted to a stepped surface between the first stepped hole 111 and the second stepped hole 112. So set up, be convenient for fix a position temperature sensor 20, can reduce the structural dimension of connecting hole 11 simultaneously, be convenient for lay out and fix other components on the valve body 10.

Specifically, the first fixing sleeve 30 and the second fixing sleeve 62 are both made of nylon. So set up, the weight of first fixed cover 30 and second fixed cover 62 is lighter to can alleviate the weight of bottle valve, the subsequent installation of bottle valve of being convenient for simultaneously in being convenient for install first fixed cover 30 to first shoulder hole 111, be convenient for install second fixed cover 62 to third shoulder hole 113. The first fixing sleeve 30 and the second fixing sleeve 62 may be made of other metal materials.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present utility model. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

In the description of the present utility model, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present utility model; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present utility model.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. A bottle valve, comprising:

the device comprises a valve body (10), wherein a connecting hole (11) is formed in the valve body (10), the connecting hole (11) is provided with a first end and a second end which are oppositely arranged, and the first end of the connecting hole (11) is used for being communicated with a hydrogen cylinder;

a temperature sensor (20), the temperature sensor (20) being arranged at a first end of the connection hole (11);

the first fixing sleeve (30) is arranged between the temperature sensor (20) and the inner wall of the connecting hole (11), the first fixing sleeve (30) is in interference fit with the connecting hole (11), and a limiting structure is arranged between the first fixing sleeve (30) and the temperature sensor (20) so as to fix the temperature sensor (20) in the connecting hole (11);

and the sealing component (40) is arranged between the temperature sensor (20) and the connecting hole (11), and the sealing component (40) is arranged close to the second end of the connecting hole (11) relative to the first fixing sleeve (30).

2. The bottle valve according to claim 1, wherein a first limiting section (31) is arranged at one end of the first fixing sleeve (30) close to the second end of the connecting hole (11), the direction of the inner radial direction of the first limiting section (31) close to the second end of the connecting hole (11) is gradually increased, a second limiting section (21) is arranged on the temperature sensor (20), the diameter of the second limiting section (21) is gradually increased towards the direction close to the second end of the connecting hole (11), the second limiting section (21) is abutted against the first limiting section (31), and the first limiting section (31) and the second limiting section (21) are matched to form the limiting structure.

3. The bottle valve according to claim 2, characterized in that a first angle is formed between the inner side wall of the first limiting section (31) and the axis of the connecting hole (11), a second angle is formed between the outer side wall of the second limiting section (21) and the axis of the connecting hole (11), and the difference between the first angle and the second angle is set between 1 ° and 3 °.

4. The cylinder valve according to claim 1, wherein the sealing assembly (40) comprises a first sealing structure and a second sealing structure (42), the first sealing structure and the second sealing structure (42) being arranged at intervals along the axial direction of the temperature sensor (20).

5. The bottle valve according to claim 4, wherein the first sealing structure is arranged away from the second end of the connecting hole (11) relative to the second sealing structure (42), the first sealing structure comprises a first sealing ring (411), the second sealing structure (42) comprises a second sealing ring (421) and a retainer ring (422), the retainer ring (422) is arranged near the second end of the connecting hole (11) relative to the second sealing ring (421), and the retainer ring (422) can axially limit the second sealing ring (421).

6. The bottle valve of claim 1, wherein the bottle valve further comprises:

a wire harness (50) arranged in the connecting hole (11), wherein one end of the wire harness (50) is connected with the temperature sensor (20), and the other end of the wire harness (50) extends to the second end of the connecting hole (11);

and a fixing member (60) provided at a second end of the connection hole (11) to fix the wire harness (50).

7. The bottle valve according to claim 6, wherein the fixing assembly (60) comprises a blocking piece (61), the blocking piece (61) is arranged in the connecting hole (11), the blocking piece (61) is in interference fit with the connecting hole (11), a first through hole is formed in the blocking piece (61), and the wire harness (50) is arranged in the first through hole in a penetrating mode.

8. The cylinder valve according to claim 7, characterized in that the fixing assembly (60) further comprises a second fixing sleeve (62), the second fixing sleeve (62) is arranged away from the first end of the connecting hole (11) relative to the blocking piece (61), the second fixing sleeve (62) comprises a connecting section (621) and a fixing section (622) which are connected with each other, the outer diameter of the fixing section (622) is larger than that of the connecting section (621), the connecting section (621) is arranged in the connecting hole (11), the connecting section (621) is in interference fit with the connecting hole (11), the connecting section (621) is abutted with the blocking piece (61), the fixing section (622) is located outside the connecting hole (11), and the fixing section (622) is abutted with the end face of the valve body (10).

9. The bottle valve according to claim 6, wherein the connection hole (11) comprises a first stepped hole (111), a second stepped hole (112) and a third stepped hole (113) which are sequentially communicated, the first stepped hole (111) is arranged at a first end of the connection hole (11), the third stepped hole (113) is arranged at a second end of the connection hole (11), the diameter of the second stepped hole (112) is smaller than the diameters of the first stepped hole (111) and the third stepped hole (113), and the temperature sensor (20) is abutted against a stepped surface between the first stepped hole (111) and the second stepped hole (112).

10. The cylinder valve according to claim 8, wherein the first and second retaining sleeves (30, 62) are each of nylon material.