A highly sealed intelligent gas meter

Abstract

The present invention discloses a highly sealed intelligent gas meter, comprising a main shell body with a flow channel installed, a shell bottom including a bottom peripheral wall and a shell cover including a cover peripheral wall; the inner side of the shell bottom is provided with an annular wall located on the inner side of the bottom peripheral wall around the hollow portion, and the end of the annular wall is provided with a first groove-shaped recess; the bottom peripheral wall forms an outer convex edge on the outer side of the shell bottom, and the end of the outer convex edge is provided with a second groove-shaped recess; the inner side of the cover peripheral wall is provided with an annular convex wall, and the end of the annular convex wall is provided with an annular convex ridge, the outer surface of the bottom peripheral wall is an outer inclined surface gradually expanding from outward to inward, and the inner surface of the cover peripheral wall is an inner inclined surface, the rubber strip in the first groove-shaped recess is pressed tightly against the surface of the main shell body to achieve a primary seal, the inner inclined surface of the shell cover and the outer inclined surface of the shell bottom are tightly sealed to achieve a secondary seal, the annular convex ridge on the annular convex wall is embedded in the second groove-shaped recess and presses the rubber strip in the second groove-shaped recess to complete the tertiary seal, and the sealing performance of the gas meter is significantly improved through the multiple sealing structures.

Description

Technical Field

[0001] The present invention relates to the technical field of gas meters, and in particular to a highly sealed intelligent gas meter. Background Art

[0002] With the acceleration of urbanization, gas is becoming increasingly common in daily life and industrial production. As a crucial tool for gas metering, the performance and reliability of gas meters are directly linked to the safety and accuracy of gas supply. Traditional gas meters primarily utilize a mechanical structure, measuring gas usage through gear transmission and a pointer display. However, with technological advancements, smart gas meters are becoming increasingly mainstream in the market. Smart gas meters not only provide basic metering functions but also integrate a variety of intelligent modules, such as electronic displays, communication modules, and valve control modules, enabling remote meter reading, prepayment management, and real-time monitoring.

[0003] However, existing smart gas meters still have some problems in their design and use. In particular, the sealing of the meter head has always been a technical difficulty. For example, the high-sealing smart gas meter mentioned in patent CN222231773U, although the overall sealing performance is improved by the design of multiple gaskets and sealing rings, this design still relies on a complex sealing structure and a large number of sealing elements, which increases production costs and assembly difficulty. In addition, the leak-proof IoT smart gas meter mentioned in patent CN222279850U, although a sealing mating cover and a sealing ring are set between the upper and lower shells of the base meter, these sealing measures are mainly based on direct docking position settings.

[0004] In practice, the seal of a gas meter's header is often difficult to guarantee due to the need to install external interfaces such as the display, buttons, and communication modules. Environmental factors such as moisture and dust can easily enter the meter header through these interfaces, causing moisture, short circuits, or corrosion in electronic components, thereby affecting the meter's proper operation and even posing safety risks. Furthermore, existing sealing designs are prone to aging or damage over long periods of use, further reducing sealing performance.

[0005] In summary, the existing smart gas meters still have deficiencies in the sealing of the meter head part, and further optimization of the design is needed to improve its sealing performance and reliability while reducing production costs and maintenance difficulty. Summary of the Invention

[0006] Based on the shortcomings of the prior art, the technical problem to be solved by the present invention is to provide a highly sealed smart gas meter with better sealing performance.

[0007] The technical solution of the present invention to solve the above technical problems is as follows: a highly sealed intelligent gas meter, comprising a main housing with a flow channel installed, a housing bottom including a bottom peripheral wall, and a housing cover including a cover peripheral wall;

[0008] The shell bottom includes a hollow portion and a groove portion, wherein the groove portion has a notch facing outward and a closed bottom;

[0009] The bottom peripheral wall forms an inner convex edge on the inner side of the shell bottom, and the inner side of the shell bottom is provided with an annular wall located on the inner side of the bottom peripheral wall around the hollow portion, with a gap between the annular wall and the bottom peripheral wall, and a first groove-shaped recess is provided at the end of the annular wall;

[0010] The bottom peripheral wall forms an outer convex edge on the outer side of the shell bottom, and the end of the outer convex edge is provided with a second groove-shaped recess;

[0011] An annular convex wall is provided on the inner side of the peripheral wall of the cover and is mated with the outer convex edge, and an annular convex ridge is provided at the end of the annular convex wall and is matched with the second groove-shaped recess;

[0012] The first groove-shaped recess and the second groove-shaped recess are provided with rubber strips; the shell bottom is fastened to the outside of the main shell, and the rubber strips in the first groove-shaped recess are pressed tightly against the surface of the main shell;

[0013] The outer surface of the bottom peripheral wall is an outer inclined surface that gradually expands outward from the outside to the inside, and the inner surface of the cover peripheral wall is an inner inclined surface that matches the outer inclined surface;

[0014] The shell cover is sleeved outside the shell bottom and fastened, and the outer bevel is tightly sealed against the inner bevel; at the same time, the annular ridge on the annular convex wall is embedded in the second groove-shaped recess and the rubber strip in the second groove-shaped recess is pressed to seal.

[0015] The preferred technical solution of the present invention for solving the above technical problems is: the outer convex edge of the bottom peripheral wall is provided with positioning holes at the two top corners of the upper end, the second groove-shaped depression is bent inward at the top corner and passes around the inner side of the positioning hole, and the outer convex edge is provided with auxiliary glue holes arranged around both sides of the positioning hole.

[0016] The preferred technical solution of the present invention for solving the above technical problems is: the main shell includes an upper shell and a lower shell, the upper shell and the lower shell are connected to form a horizontal convex ring, and the inner side of the shell bottom is provided with a strip-shaped recess matching the convex ring, and the strip-shaped recess is located between the hollow part and the groove part.

[0017] The preferred technical solution of the present invention to solve the above technical problems is as follows: the groove portion is divided into an upper cavity and a lower cavity by a transversely arranged partition, the lower cavity is used to install the battery, and the shell cover is provided with a through groove at a position corresponding to the lower cavity, so that the battery in the lower cavity can be taken out through the through groove;

[0018] The lower section of the outer side of the shell cover is provided with a recessed portion, the recessed portion is provided with an annular ridge surrounding the through groove, the end of the annular ridge is provided with an annular rubber groove, and a sealing cover is provided on the outside of the shell cover, the sealing cover is provided with an annular convex portion that cooperates with the annular rubber groove;

[0019] The sealing cover closes the recessed portion, and an outer surface of the sealing cover is flush with an outer surface of an upper section of the outer side of the shell cover.

[0020] The preferred technical solution of the present invention for solving the above technical problems is as follows: the recessed portion is provided with at least two fixing holes above the through slot, the inner side of the shell cover is provided with a first fixing post corresponding to the fixing holes, the shell bottom is provided with a second fixing post, and a fastener passes through the fixing holes from the outside to the inside to connect the first fixing post and the second fixing post;

[0021] First buckles are provided on both sides of the recessed portion, and the sealing cover is provided with second buckles matching the first buckles. The annular ridge surrounds the fixing hole.

[0022] Another technical solution of the present invention to solve the above technical problems is: a highly sealed intelligent gas meter, comprising a main housing with a flow channel installed, a housing bottom including a bottom peripheral wall, and a housing cover including a cover peripheral wall;

[0023] The shell bottom includes a hollow portion and a groove portion, wherein the groove portion has a notch facing outward and a closed bottom;

[0024] The bottom peripheral wall forms an inner convex edge on the inner side of the shell bottom, and the inner side of the shell bottom is provided with an annular wall located on the inner side of the bottom peripheral wall around the hollow portion, and the end of the annular wall is provided with a first groove-shaped recess;

[0025] The bottom peripheral wall forms an outer convex edge on the outer side of the shell bottom, and the end of the outer convex edge is provided with a second groove-shaped recess;

[0026] An annular convex wall is provided on the inner side of the peripheral wall of the cover and is mated with the outer convex edge, and an annular convex ridge is provided at the end of the annular convex wall and is matched with the second groove-shaped recess;

[0027] Rubber strips are provided in the first groove-shaped recess and the second groove-shaped recess; the shell bottom is fastened to the outside of the main shell body, and the rubber strip in the first groove-shaped recess is pressed tightly against the surface of the main shell body; the shell cover is sleeved outside the shell bottom and the inner end face contacts the surface of the main shell body, and the peripheral wall of the cover is tightly sealed against the peripheral wall of the bottom; at the same time, the annular ridge on the annular convex wall is embedded in the second groove-shaped recess and presses the rubber strip in the second groove-shaped recess for sealing.

[0028] The preferred technical solution of the present invention for solving the above technical problems is: the shell bottom is fastened to the outside of the main shell, a sealing gasket is provided between the shell bottom and the main shell; and the sealing gasket is located inside the inner convex edge.

[0029] The preferred technical solution of the present invention to solve the above technical problems is: the groove portion is divided into an upper cavity and a lower cavity by a transversely arranged partition, the lower cavity is used to install the battery,

[0030] The lower section of the outer side of the shell cover is provided with a recessed portion, and the recessed portion is provided with a through slot corresponding to the position of the lower cavity, so that the battery in the lower cavity can be taken out and put in through the through slot; the recessed portion is provided with at least two fixing holes above the through slot, and fasteners pass through the fixing holes from the outside to the inside to connect the shell bottom and the shell cover;

[0031] The shell cover includes a sealing cover, first buckles are provided on both sides of the recessed portion, and the sealing cover is provided with second buckles matching the first buckles;

[0032] The recessed portion is provided with an annular ridge surrounding the through groove and the fixing hole, the end of the annular ridge is provided with an annular rubber groove, and the sealing cover is provided with an annular convex portion that cooperates with the annular rubber groove;

[0033] The sealing cover closes the recessed portion, and an outer surface of the sealing cover is flush with an outer surface of an upper section of the outer side of the shell cover.

[0034] The preferred technical solution of the present invention for solving the above technical problems is: the outer surface of the bottom peripheral wall is an outer bevel that gradually expands outward from the outside to the inside, and the inner surface of the cover peripheral wall is an inner bevel that matches the outer bevel; the outer bevel and the inner bevel are tightly sealed.

[0035] Compared with the existing technology, the advantages of the present invention are: the rubber strip in the first groove-shaped depression is pressed tightly against the surface of the main shell to achieve a primary seal, the inner surface of the shell cover and the outer surface inclined surface of the shell bottom are tightly sealed to achieve a secondary seal, and the annular ridge on the annular convex wall is embedded in the second groove-shaped depression and presses the rubber strip in the second groove-shaped depression to complete the third seal, thereby significantly improving the sealing performance of the gas meter through the multiple sealing structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The present invention will be described in further detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will appreciate that these drawings are drawn only for the purpose of explaining the preferred embodiments and should not be construed as limiting the scope of the present invention. Furthermore, unless otherwise specified, the drawings are merely schematic representations of the composition or structure of the depicted objects and may contain exaggerated representations. Furthermore, the drawings are not necessarily drawn to scale.

[0037] Figure 1 A schematic diagram of a highly sealed smart gas meter according to a preferred embodiment of the present invention Figure 1 ;

[0038] Figure 2A schematic diagram of a highly sealed smart gas meter according to a preferred embodiment of the present invention Figure 2 ;

[0039] Figure 3 This is an exploded schematic diagram of a highly sealed smart gas meter according to a preferred embodiment of the present invention;

[0040] Figure 4 This is a schematic diagram of the main housing of a highly sealed smart gas meter according to a preferred embodiment of the present invention;

[0041] Figure 5 The bottom of a highly sealed smart gas meter according to a preferred embodiment of the present invention is shown in FIG. Figure 1 ;

[0042] Figure 6 The bottom of a highly sealed smart gas meter according to a preferred embodiment of the present invention is shown in FIG. Figure 2 ;

[0043] Figure 7 A schematic diagram of a highly sealed smart gas meter cover according to a preferred embodiment of the present invention Figure 1 ;

[0044] Figure 8 A schematic diagram of a highly sealed smart gas meter cover according to a preferred embodiment of the present invention Figure 2 ;

[0045] Figure 9 This is an assembly diagram of a shell, bottom, and cover of a highly sealed smart gas meter according to a preferred embodiment of the present invention;

[0046] Figure 10 This is a schematic diagram of a lead module of a highly sealed smart gas meter according to a preferred embodiment of the present invention;

[0047] Figure 11 This is a cross-sectional view of a lead module of a highly sealed smart gas meter according to a preferred embodiment of the present invention;

[0048] Figure 12 This is an exploded view of the lead module of a highly sealed smart gas meter according to a preferred embodiment of the present invention.

[0049] Reference numerals:

[0050] Main shell 1; bottom peripheral wall 20; shell bottom 2; cover peripheral wall 30; shell cover 3; hollow portion 21; groove portion 22; bottom plate 220; transparent window 31; inner convex edge 23; annular wall 25; gap 28; first groove-shaped recess 250; outer convex edge 24; second groove-shaped recess 240; annular convex wall 32; annular convex ridge 320; outer bevel 201; inner bevel 301; upper shell 11; lower shell 12; protruding ring 13; positioning hole 26; positioning hole column 308; auxiliary glue hole 27; mounting hole 14; mounting column 15; partition 29; through groove 36; recessed portion 35; fixing hole 39; first fixing column 39a; second fixing column 39b; sealing cover 4; first buckle 37; annular ridge 38; lead module 5; integrated line 51; base 52; inner sleeve 53; outer sleeve 54; mounting through hole 503; embedded portion 541; exposed portion 542; first outer cone 504; blind hole 501; outer sleeve hole 540; second outer cone 505; inner sleeve hole 530; sensor mounting hole 502; strip-shaped recess 208; upper cavity 221; lower cavity 222. DETAILED DESCRIPTION

[0051] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely illustrative and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0052] It should be noted that like reference numerals denote like items in the following drawings, and therefore, once an item is defined in one drawing, it will not be further defined or explained in the subsequent drawings.

[0053] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0054] like Figure 1-3 As shown, this embodiment provides a highly sealed smart gas meter, which includes a main housing 1 with a flow channel installed, a housing bottom 2 including a bottom peripheral wall 20 and a housing cover 3 including a cover peripheral wall 30 .

[0055] like Figure 1-3 As shown, a component housing, which houses components such as a display meter, metering module, circuit board, and battery, is formed between the housing base 2 and the housing cover 3. This component is located on one side of the main housing 1. The ultrasonic testing module within the main housing 1 is connected to the components within the component housing via a lead module 5.

[0056] like Figure 5-6 As shown, the case bottom 2 includes a hollow portion 21 on the upper side and a groove portion 22 on the lower side. The groove portion 22 has an outward notch and is closed at the bottom by a base plate 220. The display is set in the hollow portion 21. Correspondingly, the case cover 3 forms a transparent window 31 at the corresponding position of the display.

[0057] like Figure 6 As shown, the bottom peripheral wall 20 forms an inner convex edge 23 on the inner side of the housing base 2. An annular wall 25 is formed on the inner side of the housing base 2, surrounding the hollow portion 21. A gap 28 is formed between the annular wall 25 and the bottom peripheral wall 20. A first groove-like recess 250 is formed at the end of the annular wall 25. A rubber strip is disposed within the first groove-like recess 250. The rubber strip is formed by applying a sealant to the first groove-like recess 250 and allowing it to cure. The housing base is secured to the exterior of the main housing. The rubber strip in the first groove-like recess 250 presses against the surface of the main housing 1, thereby sealing the main housing 1 from the components.

[0058] Further, if Figure 5 As shown, the bottom peripheral wall 20 forms an outer convex edge 24 on the outer side of the shell bottom 2 , and a second groove-shaped recess 240 is provided at the end of the outer convex edge 24 .

[0059] like Figure 7 As shown, an annular convex wall 32 is provided on the inner side of the cover peripheral wall 30 to be matched with the outer convex edge 24 , and an annular convex ridge 320 is provided at the end of the annular convex wall 32 to match the second groove-shaped recess 240 .

[0060] A rubber strip is positioned within the second groove-shaped recess 240. The housing cover 3 is fitted over the housing base 2 and secured, with the cover peripheral wall 30 and bottom peripheral wall 20 pressed against each other for a tight seal. Simultaneously, the annular ridge 320 on the annular convex wall 32 engages with the second groove-shaped recess 240, compressing the rubber strip within the second groove-shaped recess 240 to create a seal. The tight contact between the cover peripheral wall 30 and bottom peripheral wall 20, the engagement of the annular ridge 320 with the second groove-shaped recess 240, and the compression of the rubber strip achieve a double seal within the assembly.

[0061] The seal between the main housing 1 and the assembly, as well as the seal within the assembly itself, effectively prevents gas leakage, achieving high sealing performance for the gas meter and ensuring the safety and reliability of the gas meter during use. The sleeve-type connection between the housing cover and the housing base also simplifies the assembly process and reduces production costs.

[0062] like Figure 6 、 7 As shown in Figures 9 and 9, the outer surface of the bottom peripheral wall 20 of the housing base 2 forms an outer bevel 201 that gradually expands inward, while the inner surface of the cover peripheral wall 30 of the housing cover 3 forms an inner bevel 301 that matches the outer bevel 201. The inner bevel of the housing cover 3 tightly seals against the outer bevel 201 of the housing base 2. Compared to vertical surfaces, the press fit of the bevel not only facilitates assembly but also provides a better sealing effect.

[0063] In summary, the rubber strip in the first groove-shaped recess 250 presses against the surface of the main housing 1 to achieve a primary seal. The inner inclined surface of the housing cover 3 and the outer inclined surface of the housing bottom 2 seal against each other to achieve a secondary seal. The annular ridge 320 on the annular convex wall 32 engages with the second groove-shaped recess 240 and presses against the rubber strip in the second groove-shaped recess 240 to achieve a tertiary seal. This embodiment significantly improves the sealing performance of the gas meter through the multiple sealing structures.

[0064] like Figure 6 As shown, there is a gap 28 between the annular wall 25 and the bottom circumferential wall 20, thereby reducing the impact of the deformation of the bottom circumferential wall 20 on the annular wall 25, ensuring that the rubber strip of the first groove-shaped recess 250 of the annular wall 25 can be firmly pressed against the outer surface of the main shell 1.

[0065] Preferably, the shell bottom 2 is fastened to the outside of the main shell 1, and a sealing gasket is provided between the shell bottom 2 and the main shell 1; the sealing gasket is located inside the inner convex edge 23. The provision of the sealing gasket can further enhance the sealing performance.

[0066] like Figure 1-4 As shown in Figures 6 and 7, the main shell 1 includes an upper shell 11 and a lower shell 12. The upper shell 11 and the lower shell 12 are connected to form a horizontal convex ring 13. The inner side of the shell bottom 2 is provided with a strip-shaped recess 208 that matches the convex ring 13. The shell bottom 2 is divided by the strip-shaped recess 208 into a hollow portion 21 located on the upper side for installing the display meter and a groove portion 22 located on the lower side. By dividing the shell bottom 2 into the hollow portion 21 and the groove portion 22, not only is installation space provided for the display meter, but also independent installation areas are provided for other components. The matching test of the strip-shaped recess 208 and the convex ring 13 not only realizes structural avoidance, but also plays a supporting and positioning role, making the installation of the component and the main shell 1 more stable.

[0067] like Figure 5 As shown, the outer convex edge 24 of the bottom peripheral wall 20 of the housing base 2 is provided with positioning holes 26 at the two top corners of the upper end. The second groove-shaped recess 240 bends inward at the top corners and passes around the inner side of the positioning holes 26. Through the positioning holes 26, the housing cover 3 is provided with a positioning hole column 308 that matches the positioning hole 26. The positioning column is penetrated by a positioning pin or screw to achieve a fixed connection.

[0068] like Figure 5 As shown, the outer convex edge 24 is provided with auxiliary glue holes 27 arranged around both sides of the positioning hole 26. The auxiliary glue holes 27 can also compensate for the insufficient sealing problem caused by installation errors to a certain extent, thereby ensuring the reliability of the sealing.

[0069] like Figure 4 As shown, the main housing 1 is provided with a mounting hole 14 for mounting the lead module, and mounting posts 15 for mounting the display meter are provided on both sides of the mounting hole 14 . The mounting hole 14 and the mounting posts 15 fall into the hollow portion 21 .

[0070] like Figure 5 As shown, the recessed portion 22 is divided into an upper chamber 221 and a lower chamber 222 by a transversely disposed partition 29. The lower chamber 222 is used to install batteries. The housing 3 is provided with a through slot 36 at a position corresponding to the lower chamber 222 so that the batteries in the lower chamber 222 can be removed from the through slot 36.

[0071] like Figure 5 、 7 As shown in Figures 8 and 8, a recessed portion 35 is provided on the lower outer section of the shell cover 3, and at least two fixing holes 39 are provided on the recessed portion 35 above the through slot 36. A first fixing column 39a corresponding to the fixing hole 39 is provided on the inner side of the shell cover 3, and a second fixing column 39b is provided on the shell bottom 2. The fastener passes through the fixing hole from the outside to the inside to connect the first fixing column and the second fixing column.

[0072] like Figure 1 、 3 As shown in Figures 8 and 8, the shell cover 3 includes a sealing cover 4. First clips 37 are provided on both sides of the recessed portion 35. The sealing cover 4 is provided with a second clip that matches the first clip 37. The sealing cover 4 is assembled on the shell cover 3 by connecting the second clip and the first clip 37. The sealing cover 4 closes the recessed portion 35 to shield the fixing hole 39 and the through groove 36. The outer surface of the sealing cover 4 is flush with the outer surface of the outer upper section of the shell cover 3.

[0073] By dividing the recessed portion 22 into an upper chamber 221 and a lower chamber 222, a separate installation space is provided for the battery. The design of the through-slot 36 and the sealing cover 4 facilitates easy battery replacement and seal protection. The snap-fit ​​connection between the sealing cover 4 and the recessed portion 35, coupled with its flush outer surface, not only improves the sealing of the battery chamber but also enhances the overall aesthetics of the gas meter. This design not only ensures sealing performance but also enhances the user experience and maintenance convenience of the gas meter.

[0074] like Figure 8 As shown, recessed portion 35 is provided with an annular ridge 38 surrounding through-slot 36 and the fixing hole. The end of annular ridge 38 is provided with an annular adhesive groove, and sealing cover 4 is provided with an annular protrusion that mates with the annular adhesive groove. The design of annular ridge 38 and annular adhesive groove provides additional sealing between sealing cover 4 and housing cover 3. The cooperation between the annular protrusion and the annular adhesive groove achieves a four-fold seal, enhancing the securing effect of sealing cover 4 and effectively preventing gas leakage from the battery cavity, ensuring the safety and reliability of the gas meter while also extending the battery life.

[0075] like Figure 10-12As shown, the lead module 5 includes an integrated wire 51, a base 52, an inner sleeve 53 and an outer sleeve 54. The base 52 is installed inside the main shell 1. A mounting through hole 503 is provided on the base 52, and the hole wall of the mounting through hole 503 is an inner cone surface with an inner diameter gradually increasing from top to bottom. The outer sleeve 54 is arranged in the mounting through hole 503, and includes an embedded portion 541 and an exposed portion 542. The embedded portion 541 matches the mounting through hole 503, and the outer peripheral surface of the embedded portion 541 is a first outer cone surface 504 with an outer diameter gradually increasing from top to bottom. After the embedded portion 541 is assembled, it is located in the through hole. The exposed portion 542 passes through the mounting through hole 503 and is exposed on the upper surface of the base 52. The outer periphery of the exposed portion 542 is provided with an external thread. The module also includes a matching nut. The bottom of the embedded portion 541 is provided with a blind hole 501 for receiving the inner sleeve 53. The wall of the blind hole 501 is a tapered surface with a gradually increasing inner diameter from top to bottom. The outer sleeve 54 is provided with an axially extending outer hole 540 that extends all the way to the blind hole 501. The inner sleeve 53 is in a frustum-shaped configuration that matches the blind hole 501. The outer circumference of the inner sleeve 53 is a second outer tapered surface 505 with a gradually increasing outer diameter from top to bottom.

[0076] The inner sleeve 53 has an inner sleeve hole 530 extending axially therethrough. The inner sleeve hole 530 is a flat rectangular shape that matches the cross-section of the integrated wire 51. The inner sleeve 53 is inserted into the blind hole 501. The outer sleeve hole 540 and the inner sleeve hole 530 are connected to form a lead-in hole. The integrated wire 51 is passed through the lead-in hole. The integrated wire 51 is fixed to the inner sleeve 53, and the inner sleeve hole 530 and the integrated wire 51 are sealed.

[0077] like Figure 4 、 11 -As shown in Figure 12, during the specific assembly, first, the upper shell 11 and the lower shell 12 of the main shell 1 are in a separated state, and the lead module 5 is inside the shell. The integrated wire 51 led out from the main shell 1 is passed through the inner sleeve hole 530. The upper section of the integrated wire 51 exceeds the upper end of the inner sleeve 53, and the lower section of the integrated wire 51 exceeds the lower end of the inner sleeve 53. The integrated wire 51 and the inner sleeve 53 are sealed and fixed to form a first-level component. The preferred fixing method is to solder and seal the two along a circle of the inner sleeve hole 530.

[0078] Then, if Figure 4 、 10 As shown in Figure 12, the primary assembly is inserted from bottom to top into outer sleeve 54. The upper section of integrated cable 51 passes through outer sleeve hole 540, with its upper end extending beyond the upper end of outer sleeve 54. The inner sleeve 53 is inserted into blind hole 501 in outer sleeve 54. The inner sleeve 53 and outer sleeve 54 are compressed and sealed by the inclined surface, forming the secondary assembly. The secondary assembly is then inserted from bottom to top into mounting hole 503, with the exposed portion 542 protruding from above the base 52. This completes the module pre-assembly.

[0079] like Figure 4 、 11As shown in Figure 12, the exposed portion 542 of the preassembled structure is then passed through the outside of the main housing 1 through the mounting hole 14. The nut located outside the main housing 1 is screwed onto the exposed portion 542. The outer sleeve 54 is gradually pulled outward, so that the embedded portion 541 is located in the mounting hole 503 and tightened by the inclined surface, thus achieving a seal while simultaneously installing the module. At this point, the upper end of the integrated cable 51 is located outside the main housing and is connected to the components inside the housing base 2 and the housing cover 3.

[0080] In this embodiment, the integrated wire 51 and the inner sleeve 53 are sealed and fixed by ordinary sealing means, such as the most common soldering seal. During the installation process, the integrated wire 51 is not subjected to dragging force, so it will not cause damage to the seal, which can ensure this primary sealing effect. Due to the conical surface design of the outer sleeve 54 and the inner sleeve 53, when the inner sleeve 53 is internally pressed and embedded in the blind hole 501 of the outer sleeve 54, the two fit tightly together to form a good sealing effect. When the exposed part 542 is pulled outward, the embedded part 541 of the outer sleeve 54 is located in the mounting through hole 503 and is tightened and sealed by the inclined surface. The embedded part 541 of the outer sleeve 54 is tightly matched with the conical surface of the mounting through hole 503 of the base 52, further enhancing the sealing of the entire lead module. In this way, the sealing of the lead during the external insertion process is guaranteed. The entire module structure is relatively simple and the installation is relatively convenient.

[0081] like Figure 10 As shown, in this embodiment, the base 52 is preferably provided with a sensor mounting hole 502, into which a seal detection device is mounted. This device includes a pressure sensor. The pressure sensor monitors the pressure within the meter in real time. When abnormal pressure changes occur, a signal is sent to the gas meter's control unit. Upon receiving the signal, the control unit can take timely measures, such as closing the gas valve, to prevent gas leaks. The addition of this seal detection device significantly improves the safety and reliability of the lead module, providing a strong guarantee for the safe operation of the gas meter.

[0082] This article introduces a highly leak-tight smart gas meter provided by the present invention. Specific examples are used to illustrate the principles and implementation methods of the present invention. The above examples are intended only to facilitate understanding of the present invention and its core concepts. It should be noted that those skilled in the art may make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications fall within the scope of protection of the claims.

Claims

1. A highly sealed smart gas meter, characterized by: The housing comprises a main housing with a flow channel installed therein, a housing bottom comprising a bottom peripheral wall, and a housing cover comprising a cover peripheral wall; The shell bottom includes a hollow portion and a groove portion, the groove portion has a notch facing outward and a closed bottom; the bottom peripheral wall forms an inner convex edge on the inner side of the shell bottom, and the inner side of the shell bottom is provided with an annular wall located on the inner side of the bottom peripheral wall around the hollow portion, and the end of the annular wall is provided with a first groove-shaped recess; The bottom peripheral wall forms an outer convex edge on the outer side of the shell bottom, and a second groove-shaped recess is provided at the end of the outer convex edge; the inner side of the cover peripheral wall is provided with an annular convex wall that is connected to the outer convex edge, and an annular convex ridge is provided at the end of the annular convex wall; The first groove-shaped recess and the second groove-shaped recess are provided with rubber strips; the shell bottom is fastened to the outside of the main shell, and the rubber strips in the first groove-shaped recess are pressed tightly against the surface of the main shell; The outer surface of the bottom peripheral wall is an outer bevel that gradually expands outward from the outside to the inside, and the inner surface of the cover peripheral wall is an inner bevel that matches the outer bevel; the shell cover is sleeved over the shell bottom and tightened, the outer bevel and the inner bevel are tightly sealed, and the annular ridge is embedded in the second groove-shaped recess and presses the rubber strip in the second groove-shaped recess to seal; Positioning holes are provided at two top corners of the outer convex edge of the bottom peripheral wall, and the second groove-shaped recess is bent inward at the top corners and passes around the inner side of the positioning holes; The outer convex edge is provided with auxiliary glue holes arranged around both sides of the positioning hole, and the inner arc line of the auxiliary glue hole and the second groove-shaped depression surround the periphery of the positioning hole; The groove portion is divided into an upper cavity and a lower cavity by a transversely arranged partition, the lower cavity is used to install batteries, and the shell cover is provided with a through groove at a position corresponding to the lower cavity, so that the batteries in the lower cavity can be taken out through the through groove; The lower section of the outer side of the shell cover is provided with a recessed portion, the recessed portion is provided with an annular ridge surrounding the through groove, the end of the annular ridge is provided with an annular rubber groove, and a sealing cover is provided on the outside of the shell cover, the sealing cover is provided with an annular convex portion that cooperates with the annular rubber groove; The sealing cover closes the recessed portion, and an outer surface of the sealing cover is flush with an outer surface of an upper section of the outer side of the shell cover.

2. A highly sealed smart gas meter according to claim 1, characterized in that: The main shell includes an upper shell and a lower shell, the upper shell and the lower shell are connected to form a horizontal convex ring, and the inner side of the shell bottom is provided with a strip-shaped recess matching the convex ring, and the strip-shaped recess is located between the hollow part and the groove part.

3. The highly sealed smart gas meter according to claim 1, characterized in that: The recessed portion is provided with at least two fixing holes above the through slot, the inner side of the shell cover is provided with a first fixing post corresponding to the fixing holes, the shell bottom is provided with a second fixing post, and a fastener passes through the fixing holes from the outside to the inside to connect the first fixing post and the second fixing post; First buckles are provided on both sides of the recessed portion, and the sealing cover is provided with second buckles matching the first buckles. The annular ridge surrounds the fixing hole.

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