A meter case structure and a gas meter

Abstract

This utility model belongs to the field of gas meter technology and discloses a meter housing structure and a gas meter. The meter housing structure includes a base meter, a faceplate, a mounting component, a sealing ring, and a desiccant. This utility model provides a sealing ring at the connection between the mounting component and the faceplate. The sealing ring effectively fills the connection gap, ensuring a tight seal even if the mounting component is detachable, preventing external moisture from entering the cavity through the installation gap. Simultaneously, there is no need to create drainage holes on the base meter or faceplate, structurally eliminating sealing failure caused by openings, thus achieving continuous sealing of the cavity. Furthermore, the desiccant extends into the cavity through a support portion, directly contacting the air inside and actively adsorbing water vapor, reducing the moisture content in the air at its source. Additionally, when the desiccant becomes saturated with moisture, the old desiccant can be removed and replaced with a new one by disassembling the mounting component; this operation is convenient and does not require disassembling the faceplate or base meter.

Description

Technical Field

[0001] This utility model relates to the field of gas meter technology, and in particular to a meter housing structure and a gas meter. Background Technology

[0002] Gas meters are often installed in damp environments such as basements. In damp environments, not only is the relative humidity high, but there is also a significant temperature difference between the gas meter and the outside environment. During operation, a temperature gradient will form between the inside and outside of the gas meter casing due to the temperature difference. Water vapor in the air will easily condense into condensate when it comes into contact with the cooler inner wall of the casing. If the condensate remains inside the casing for a long time, it will pose a potential threat to the normal operation of the gas meter.

[0003] To address the issue of condensation inside the gas meter casing, the industry currently employs two main solutions. The first is to create a drain hole at the bottom of the gas meter casing to directly expel the condensate, reducing its accumulation. The second solution involves placing a sponge inside the casing. The sponge's porous structure and absorbent properties absorb the condensate, temporarily storing it to maintain a relatively dry environment inside the casing.

[0004] In the case of a drain hole design, condensation tends to accumulate on the inner wall of the watch case and the surface of internal components before it can drain completely and quickly, potentially damaging the internal parts. Furthermore, the sponge design has limited absorbency, making it difficult to handle condensation over a long period. It is also inconvenient to replace, and even after replacement, the original sealing performance of the watch case cannot be guaranteed.

[0005] Therefore, neither of the two existing solutions can effectively prevent condensation from damaging the internal parts of the gas meter casing while ensuring the gas meter's sealing. Utility Model Content

[0006] The purpose of this utility model is to provide a gas meter housing structure and a gas meter that can effectively prevent condensation from damaging the internal parts of the housing while ensuring the gas meter's sealing performance.

[0007] To achieve this objective, the present invention adopts the following technical solution:

[0008] A watch case structure includes a base watch, a cover, a mounting element, a sealing ring, and a desiccant, wherein:

[0009] The cover is disposed on the base meter and together with the base meter, forms a receiving cavity for accommodating the internal parts of the gas meter;

[0010] The mounting component is detachably connected to the faceplate and has a support portion that extends into the receiving cavity;

[0011] The sealing ring is provided at the connection position between the mounting component and the face cover;

[0012] The desiccant is detachably mounted on the support portion and is used to adsorb water vapor in the containment cavity.

[0013] Preferably, the mounting component is screwed to the face cover to achieve a detachable connection, and the sealing ring is sleeved on the end of the mounting component near the face cover;

[0014] When the mounting component is screwed onto the face cover, the mounting component can press the sealing ring onto the face cover, causing the sealing ring to undergo elastic deformation to fill the gap between the mounting component and the face cover.

[0015] Preferably, the mounting component is made of a transparent material so that workers can observe the state of the desiccant from the outside.

[0016] Preferably, the desiccant changes color when it adsorbs water vapor to a predetermined degree.

[0017] Preferably, the mounting component includes a mounting body, a support portion, a latching protrusion, and a latching groove. The latching protrusion is disposed on one of the mounting body and the support portion, and the latching groove is disposed on the other of the mounting body and the support portion. The latching protrusion and the latching groove can engage to achieve a detachable connection between the support portion and the mounting body.

[0018] Preferably, when the protrusion and the slot engage, the supporting part and the mounting body enclose a circular cavity, which is used to accommodate the desiccant.

[0019] Both the mounting body and the bearing portion have multiple small holes extending into the circular cavity on their outer surfaces. These small holes allow water vapor in the receiving cavity to enter the circular cavity and come into contact with the desiccant.

[0020] Preferably, the support portion is provided with a disassembly port;

[0021] When it is necessary to disassemble the carrier to replace the desiccant, an external tool can be inserted into the disassembly port and apply a force away from the mounting body to the carrier, thereby disengaging the engagement between the latch and the slot, thus separating the carrier from the mounting body to replace the desiccant.

[0022] Preferably, the end of the mounting component away from the receiving cavity is provided with an operating part that is easy to twist. The outer surface of the operating part is provided with an anti-slip structure so that when the mounting component is screwed to or removed from the cover, the operator can apply torque through the operating part.

[0023] Preferably, the cover is provided with a mark indicating the direction of rotation of the operating part.

[0024] A gas meter includes a metering component and the aforementioned meter housing structure, wherein the metering component is disposed within the meter housing structure and is used to meter the amount of gas used.

[0025] The beneficial effects of this utility model are:

[0026] This invention features a sealing ring at the connection between the mounting component and the cover. The sealing ring effectively fills the connection gap, ensuring a tight seal even if the mounting component is detachable, preventing external moisture from entering the cavity through the installation gap. Furthermore, it eliminates the need for drainage holes on the base or cover, structurally preventing seal failure caused by openings and thus achieving continuous sealing of the cavity.

[0027] Furthermore, the desiccant extends into the housing cavity through the carrier, directly contacting the air inside and actively adsorbing water vapor, thus reducing the moisture content in the air at its source. With reduced air moisture content, the condensation caused by the temperature gradient between the inside and outside of the watch case is significantly reduced, preventing the accumulation of condensation on the inner wall of the faceplate, the inner wall of the base watch, and the surfaces of internal components, thereby eliminating the threat of corrosion from condensation.

[0028] In addition, the mounting component is detachable. When the desiccant becomes saturated with moisture, the old desiccant can be removed and replaced with a new one by disassembling the mounting component. The operation is convenient and does not require disassembling the faceplate or base surface. At the same time, the new desiccant can restore its moisture absorption capacity, ensuring that the containment cavity maintains a low moisture environment for a long time. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the watch case structure provided by this utility model;

[0030] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0031] Figure 3 This is a schematic diagram of the structure of the mounting component provided by this utility model;

[0032] Figure 4 This is a schematic diagram of the structure of the mounting body provided by this utility model;

[0033] Figure 5 This is a schematic diagram of the structure of the support part provided by this utility model.

[0034] In the picture:

[0035] 1. Base plate; 2. Cover; 21. Marking; 3. Mounting component; 31. Mounting body; 32. Bearing part; 33. Snap-fit ​​protrusion; 34. Snap-fit ​​groove; 35. Disassembly port; 36. Operating part; 4. Sealing ring. Detailed Implementation

[0036] Before explaining any implementation of this application in detail, it should be understood that this application is not limited to its application to the structural details and component arrangements set forth in the following description or shown in the above drawings.

[0037] In this application, the terms "comprising," "including," "having," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0038] In this application, the term "and / or" describes a relationship between related objects, indicating that three relationships can exist. For example, a centrifugal vortex magnetic pump and / or a centrifugal vortex magnetic pump can represent: the existence of only one centrifugal vortex magnetic pump, the simultaneous existence of one centrifugal vortex magnetic pump and a centrifugal vortex magnetic pump, or the existence of only one centrifugal vortex magnetic pump. Additionally, the character " / " in this application generally indicates that the preceding and following related objects have an "and / or" relationship.

[0039] In this application, the terms "connection," "combination," "coupling," and "installation" can refer to direct connection, combination, coupling, or installation, or indirect connection, combination, coupling, or installation. For example, a direct connection refers to two parts or components being connected together without the need for an intermediary, while an indirect connection refers to two parts or components each being connected to at least one intermediary, with the connection achieved through the intermediary. Furthermore, "connection" and "coupling" are not limited to physical or mechanical connections or couplings, but can also include electrical connections or couplings.

[0040] In this application, those skilled in the art will understand that relative terms (e.g., “about,” “approximately,” “basically,” etc.) used in conjunction with quantities or conditions are to include the values ​​and have the meaning indicated by the context. For example, such relative terms include at least the degree of error associated with the measurement of a particular value, tolerances associated with the particular value due to manufacturing, assembly, use, etc. Such terms should also be considered as disclosing a range defined by the absolute values ​​of the two endpoints. Relative terms may refer to a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values ​​not using relative terms should also be disclosed as specific values ​​with tolerances. Furthermore, “basically” when expressing relative angular relationships (e.g., substantially parallel, substantially perpendicular) may refer to a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) added to or subtracted from the indicated angle.

[0041] In this application, those skilled in the art will understand that the function performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the function performed by a part can also be performed by one part, one component, or a combination of multiple parts.

[0042] In this application, the directional terms "upper," "lower," "left," "right," "front," and "rear" are used to describe the orientation and positional relationships shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should be understood that when an element is mentioned as being connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected through an intermediate element. It should also be understood that directional terms such as upper side, lower side, left side, right side, front side, and rear side not only represent positive orientation but can also be understood as lateral orientation. For example, "below" can include directly below, lower left, lower right, lower front, and lower rear.

[0043] Please see Figures 1 to 5 This embodiment provides a gas meter casing structure, which includes a base meter 1, a faceplate 2, a mounting member 3, a sealing ring 4, and a desiccant (not shown in the figure). The faceplate 2 is disposed on the base meter 1, forming a cavity with the base meter 1 to accommodate internal components of the gas meter. The mounting member 3 is detachably connected to the faceplate 2 and has a support portion 32 that extends into the cavity. A sealing ring 4 is provided at the connection position between the mounting member 3 and the faceplate 2. The desiccant is detachably disposed on the support portion 32 for absorbing moisture in the cavity.

[0044] With this configuration, a sealing ring 4 is installed at the connection point between the mounting component 3 and the cover 2. The sealing ring 4 effectively fills the connection gap, ensuring a tight seal even if the mounting component 3 is detachable, preventing external moisture from entering the cavity through the installation gap. Furthermore, there is no need to create drainage holes on the base surface 1 or the cover 2, structurally eliminating sealing failure caused by openings and thus achieving continuous sealing of the cavity.

[0045] Furthermore, the desiccant extends into the cavity through the carrier 32, directly contacting the air inside and actively adsorbing water vapor, thus reducing the moisture content in the air at its source. With the reduced moisture content, the condensation caused by the temperature gradient between the inside and outside of the casing is significantly reduced, preventing the accumulation of condensation on the inner wall of the faceplate 2, the inner wall of the base watch 1, and the surfaces of internal parts, thereby eliminating the threat of corrosion from condensation.

[0046] More importantly, the mounting component 3 is a detachable structure. When the desiccant becomes saturated with moisture, the old desiccant can be removed and replaced with a new one by disassembling the mounting component 3. The operation is convenient and does not require disassembling the faceplate 2 or the base surface 1. At the same time, the new desiccant can restore its moisture absorption capacity, ensuring that the containment cavity maintains a low moisture environment for a long time.

[0047] It should be noted that the base watch 1 and the cover 2 constitute the watch case in the prior art. This embodiment does not make any improvements to the specific structure and connection method of the two, so they will not be described in detail. It should also be noted that the specific model of the sealing ring 4 can be selected according to the actual application scenario. This embodiment does not make specific requirements or limitations on this.

[0048] In this embodiment, the mounting member 3 is screwed to the cover 2 to achieve a detachable connection, and the sealing ring 4 is sleeved on the end of the mounting member 3 near the cover 2. When the mounting member 3 is screwed to the cover 2, the mounting member 3 can press the sealing ring 4 onto the cover 2, causing the sealing ring 4 to undergo elastic deformation to fill the gap between the mounting member 3 and the cover 2.

[0049] It is understandable that the mounting part 3 and the cover 2 are screwed together. The screwing process will generate a continuous and uniform axial compressive force on the sealing ring 4 sleeved on the end of the mounting part 3, forcing the sealing ring 4 to undergo elastic deformation to fill all the gaps between the mounting part 3 and the cover 2. Compared with the fit and seal that relies solely on the precision of the parts machining, the elastically deformable sealing ring 4 can adapt to the gap change and completely block the path of external humid air or water vapor to enter the receiving cavity through the connection part.

[0050] It is also understandable that the screw-on structure itself is easy to assemble and disassemble, and the mounting part 3 can be disassembled and assembled without special tools. When replacing the desiccant, simply unscrew the mounting part 3 to remove the desiccant from the bearing part 32, without disassembling the main body connection between the faceplate 2 and the base surface 1, resulting in high operational efficiency. In addition, each time the mounting part 3 is installed, the screwing process repeatedly applies pressure to the sealing ring 4, causing the sealing ring 4 to elastically deform again to fill the gap. Even after multiple disassemblies and assemblies, as long as the sealing ring 4 is not aged or damaged, the same sealing effect can be restored with each assembly.

[0051] Preferably, the mounting component 3 is made of a transparent material so that staff can observe the state of the desiccant from the outside, thereby determining whether the desiccant is saturated with moisture. When the desiccant is not saturated, there is no need to disassemble or replace it, avoiding premature replacement and wasting desiccant resources. When the desiccant is saturated, the mounting component 3 can be disassembled promptly to replace it with new desiccant, preventing the inability to absorb moisture in the containment cavity and the reformation of condensation due to desiccant failure, thus ensuring a continuous and stable moisture-proof effect.

[0052] More importantly, although the mounting component 3 is a detachable structure, frequent disassembly and reassembly are required to determine the desiccant's condition. Each disassembly and reassembly will compress the sealing ring 4, which may lead to elastic fatigue and accelerated aging of the sealing ring 4 over a long period of time. Improper disassembly and reassembly operations may also damage the fit between the sealing ring 4 and the mounting component 3 and the faceplate 2, thereby affecting the sealing performance. The transparent mounting component 3 allows for external observation without disassembly and reassembly, significantly reducing the number of times the mounting component 3 is disassembled and reassembly. On the one hand, it avoids elastic decay or physical damage to the sealing ring 4 due to repeated compression and friction. On the other hand, it reduces installation deviations caused by disassembly and reassembly, ensuring that the sealing ring 4 can always accurately fill the installation gap and maintain the long-term stable sealing performance of the cavity.

[0053] It should be noted that the transparent material of mounting component 3 is preferably polycarbonate or polymethyl methacrylate, both of which have high light transmittance and strong weather resistance, making them suitable for installation environments of gas meters in damp places such as basements.

[0054] To further optimize the convenience and accuracy of desiccant status assessment, the desiccant changes color when it absorbs moisture to a preset level. This proactive color change upon reaching the preset moisture absorption level allows staff to instantly determine whether the desiccant has reached the preset saturation threshold simply by observing the color change through the mounting component 3, without relying on experience.

[0055] When the color remains unchanged, it indicates that the desiccant is still within its effective moisture absorption range and does not need to be disassembled or replaced, avoiding resource waste caused by premature replacement. When the color changes, it indicates that the desiccant has reached the preset saturation level and needs to be replaced promptly to prevent moisture from being unable to be absorbed and condensation from reforming due to desiccant failure, ensuring that the moisture-proof effect always matches the requirements.

[0056] It should be noted that the desiccant material must balance moisture absorption performance, color indication function, and compatibility with the gas meter environment. For example, the core moisture-absorbing material uses fine-porous silica gel or montmorillonite. The silica gel is impregnated with non-toxic dyes such as methyl violet to form cobalt-free color-changing silica gel (orange when dry, dark green when saturated), and the montmorillonite is loaded with pH indicators such as bromothymol blue (blue when dry, yellow after moisture absorption). The physical form of the desiccant is granular (encapsulated in 20-30 mesh breathable non-woven fabric / breathable composite paper bags) or a solid molded product (injection molded from silica gel and polypropylene in a 20%-35% ratio). The specific material can be selected according to the actual application scenario, and will not be elaborated further.

[0057] Specifically, the mounting component 3 includes a mounting body 31, a support portion 32, a latching protrusion 33, and a latching groove 34. The latching protrusion 33 is disposed on one of the mounting body 31 and the support portion 32, and the latching groove 34 is disposed on the other of the mounting body 31 and the support portion 32. The latching protrusion 33 and the latching groove 34 can engage to achieve a detachable connection between the support portion 32 and the mounting body 31.

[0058] This design eliminates the need for additional tools such as screws and wrenches; the mounting component 32 can be assembled and disassembled simply by engaging or disengaging the protrusion 33 and the slot 34. This significantly simplifies maintenance procedures such as desiccant replacement and improves efficiency. Furthermore, the engagement of the protrusion 33 and the slot 34 provides reliable physical positioning, effectively fixing the position of the mounting component 32 and preventing it from falling off due to vibration or displacement during use, thus ensuring the overall structural stability of the mounting component 3.

[0059] Furthermore, when the latching protrusion 33 and the latching groove 34 engage, the supporting part 32 and the mounting body 31 enclose a circular cavity, which is used to contain the desiccant. The outer surfaces of both the mounting body 31 and the supporting part 32 are provided with multiple small holes that penetrate into the circular cavity, allowing water vapor in the containing cavity to enter the circular cavity and come into contact with the desiccant.

[0060] Understandably, the circular cavity provides a stable enclosure and containment for the desiccant, preventing it from scattering or becoming loosely adhered to the cavity wall due to vibration or displacement during use, thus ensuring the desiccant remains in an effective moisture-absorbing position. Furthermore, the multiple small holes on the outer surfaces of the mounting body 31 and the support portion 32 extend into the circular cavity, significantly increasing the contact path and area between the moisture and the desiccant within the cavity. This allows moisture to enter the cavity more evenly and efficiently and be absorbed by the desiccant, preventing localized moisture accumulation and condensation caused by poor moisture flow.

[0061] To further improve the convenience of replacing the desiccant, the carrier 32 is provided with a disassembly port 35. When it is necessary to disassemble the carrier 32 to replace the desiccant, an external tool can be inserted into the disassembly port 35 and apply a force away from the mounting body 31 to the carrier 32, thereby disengaging the locking engagement between the locking protrusion 33 and the locking groove 34, thus separating the carrier 32 from the mounting body 31 to replace the desiccant.

[0062] The disassembly port 35 allows external tools (such as small screwdrivers) to be precisely inserted and applied force directly to the mating point of the latch protrusion 33 and the slot 34, quickly releasing the latch lock without having to find the point of application of force, thus shortening the operation time for desiccant replacement.

[0063] To further improve the convenience of replacing the desiccant, the end of the mounting part 3 away from the receiving cavity is provided with an operating part 36 that is easy to twist. The outer surface of the operating part 36 is provided with an anti-slip structure so that when the mounting part 3 is screwed to or removed from the cover 2, the operator can apply torque through the operating part 36.

[0064] Understandably, the operating part 36, acting as a force-applying carrier, guides the operator to apply torque stably along the axial direction, ensuring a more precise and uniform connection between the mounting part 3 and the cover 2, and avoiding installation deviations caused by uneven force. Furthermore, in damp environments such as basements, where operators' hands are easily contaminated with moisture or oil, the anti-slip structure on the outer surface of the operating part 36 increases the friction between the hand and the operating part 36, ensuring that the torque applied by the operator is efficiently transmitted to the mounting part 3, avoiding repeated operations due to slippage, and significantly shortening the time for screwing or disassembling the mounting part 3 and the cover 2, especially greatly improving efficiency during batch maintenance.

[0065] It should be noted that the anti-slip structure may adopt a textured structure formed on the outer surface of the operating part 36, which will not be described in detail here.

[0066] Furthermore, the cover 2 is provided with a mark 21, which is used to indicate the direction of turning the operating part 36. The mark 21 directly indicates the direction of turning the operating part 36 (such as clockwise tightening / counterclockwise disassembly), eliminating the need for operators to judge based on experience. Especially for novice or unskilled maintenance personnel, it can avoid reverse force causing thread wear, slippage of the operating part 36, or damage to the screw connection structure due to incorrect turning direction, greatly reducing the operational risk.

[0067] This embodiment also provides a gas meter, which includes a metering component and the aforementioned meter housing structure. The metering component is disposed within the meter housing structure and is used to measure gas consumption. It is understood that the gas meter including the aforementioned meter housing structure can provide a long-term dry and clean operating environment for the metering component, avoiding metering deviations or failures caused by moisture corrosion and ensuring metering accuracy. It should be noted that the metering component is prior art, and this embodiment does not make any improvements to it; therefore, it will not be described in detail.

[0068] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A watch case structure, characterized by, Includes base plate (1), faceplate (2), mounting parts (3), sealing ring (4), and desiccant, wherein: The cover (2) is disposed on the base meter (1) and together with the base meter (1) forms a receiving cavity for accommodating the internal parts of the gas meter; The mounting component (3) is detachably connected to the faceplate (2) and has a support portion (32) that can extend into the receiving cavity; The sealing ring (4) is provided at the connection position between the mounting component (3) and the face cover (2); The desiccant is detachably mounted on the support part (32) and is used to adsorb water vapor in the containment cavity.

2. A case structure according to claim 1, wherein The mounting component (3) is screwed to the face cover (2) to achieve a detachable connection, and the sealing ring (4) is sleeved on the end of the mounting component (3) near the face cover (2); When the mounting part (3) is screwed onto the cover (2), the mounting part (3) can press the sealing ring (4) onto the cover (2), causing the sealing ring (4) to undergo elastic deformation to fill the gap between the mounting part (3) and the cover (2).

3. A case structure according to claim 1, wherein The mounting component (3) is made of a transparent material so that the staff can observe the state of the desiccant from the outside.

4. A case structure according to claim 3, wherein The desiccant changes color when it adsorbs water vapor to a preset level.

5. A case structure according to claim 1, wherein The mounting component (3) includes a mounting body (31), a support portion (32), a latching protrusion (33), and a latching groove (34). The latching protrusion (33) is disposed on one of the mounting body (31) and the support portion (32), and the latching groove (34) is disposed on the other of the mounting body (31) and the support portion (32). The latching protrusion (33) and the latching groove (34) can engage to achieve a detachable connection between the support portion (32) and the mounting body (31).

6. A case structure according to claim 5, wherein When the protrusion (33) and the slot (34) engage, the bearing part (32) and the mounting body (31) enclose a circular cavity, which is used to contain the desiccant. The outer surfaces of the mounting body (31) and the bearing part (32) are provided with a plurality of small holes that penetrate into the circular cavity. The small holes are used to allow water vapor in the receiving cavity to enter the circular cavity and come into contact with the desiccant.

7. A case structure according to claim 6, wherein The support portion (32) is provided with a disassembly port (35); When it is necessary to disassemble the support part (32) to replace the desiccant, an external tool can be inserted into the disassembly port (35) and apply a force away from the mounting body (31) to the support part (32), so that the engagement between the latch protrusion (33) and the latch groove (34) is released, thereby separating the support part (32) from the mounting body (31) to replace the desiccant.

8. A case structure according to claim 2, wherein The mounting component (3) is provided with an operating part (36) at one end away from the receiving cavity, which is easy to twist. The outer surface of the operating part (36) is provided with an anti-slip structure so that when the mounting component (3) is screwed to or disassembled from the cover (2), the operator can apply torque through the operating part (36).

9. A case structure according to claim 8, wherein The face cover (2) is provided with an indication (21) for indicating the screwing direction of the operating part (36).

10. A gas meter, characterized in that, The watch case structure as claimed in any one of claims 1-9 is included in a metering assembly, which is arranged in the watch case structure and is used for metering the gas consumption.

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