Correction instrument with sealing structure

Abstract

The utility model discloses a correction instrument with a sealing structure. The correction instrument comprises a middle shell, at least one of the surface shell and the bottom shell is connected with the side part of the middle shell, and a sealing structure is arranged at the joint of the surface shell and the bottom shell; the sealing structure comprises a groove matched with the outline of the middle shell, a convex edge capable of being embedded into the groove and a sealing ring arranged in the groove, the whole correction instrument is formed by assembling the multiple shells, the sealing structure is arranged at the joint of every two adjacent shells, so that the correction instrument has good sealing performance, and rainwater is prevented from entering the correction instrument.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas meters, and in particular relates to a corrector with a sealing structure. Background Art

[0002] The volume corrector is mainly used to monitor the temperature, pressure, flow and other signals of the gas online, and to automatically correct the compression factor and automatically track the flow. It is a high-precision intelligent secondary instrument specially designed for flow metering instruments. It uses a high-precision digital temperature sensor and a digital pressure sensor, and integrates a temperature and pressure correction function. It can convert the working volume flow measured by the flow meter into the standard volume flow. It is an ideal supporting instrument for gas flow meters in the city gas, petroleum, chemical, metallurgy and other industries. Figure 1 As shown, the corrector is connected to the upper end of the flow meter.

[0003] Chinese patent application number CN202322305601.0 discloses a comprehensive detection device for a volume corrector, including a first shell, a second shell and a shock-absorbing fixing mechanism. The first shell is connected to the second shell by a hinge, the second shell is provided with a button, and the second shell is provided with a display screen. By turning the handle, the handle drives the screw to rotate downward in the threaded hole in the first connecting plate, driving the pressure plate to squeeze the second shell, and the shock-absorbing spring at the bottom is compressed, thereby fixing the device. The shock-absorbing spring has a shock-absorbing effect and improves the service life of the device.

[0004] As the applicant conducted further research, it was found that since the technical solution did not take into account the complexity of the flow meter's usage scenarios, such as outdoors, it may encounter rainy weather conditions. In order to prevent rainwater from entering the corrector and causing damage to internal components, the corrector's waterproof performance needs to have certain requirements. However, due to structural limitations, the existing technical solution has the need to improve its waterproof performance. Utility Model Content

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A corrector with a sealed structure, comprising:

[0007] middle shell;

[0008] At least one of the top shell and the bottom shell is connected to the side of the middle shell, and a sealing structure is provided at the connection;

[0009] The sealing structure includes a groove conforming to the contour of the middle shell, a ridge that can be embedded in the groove, and a sealing ring arranged in the groove.

[0010] Furthermore, the ridge has a clamping guide surface, and the groove has an inclined guide surface that matches the clamping guide surface.

[0011] Furthermore, the groove is configured to be closed with the end connected.

[0012] Furthermore, the groove and / or ridge has one or more inclined guide sections along the setting path.

[0013] Furthermore, a cavity for accommodating the power supply component is formed between the middle shell and the bottom shell.

[0014] Furthermore, an inner shell is provided between the surface shell and the middle shell.

[0015] Furthermore, a display component is provided in the face shell.

[0016] Furthermore, the surface shell and the middle shell are connected by a hinge connection.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The corrector is assembled from multiple shells, and a sealing structure is provided at the connection between adjacent shells to ensure good sealing performance and prevent rainwater from entering the corrector.

[0019] The sealing structure adopts a connection method of inlaying grooves and ridges, and a sealing ring is placed between the two. After the two adjacent shells are assembled and matched, due to the elastic characteristics of the sealing ring, the small gap between the grooves and the ridges can be completely sealed, and the air tightness is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of the utility model after the gas correction instrument and flow meter are assembled;

[0021] Figure 2 This is a schematic diagram of the three-dimensional structure of the gas correction instrument according to an embodiment of the present utility model;

[0022] Figure 3 This is a schematic cross-sectional view of the gas correction instrument according to an embodiment of the present utility model;

[0023] Figure 4 for Figure 3 A partial enlarged view of point A in the middle;

[0024] Figure 5 This is a schematic diagram of the explosion structure of the gas correction instrument according to an embodiment of the present utility model (viewing angle 1);

[0025] Figure 6 This is a schematic diagram of the explosion structure of the gas correction instrument according to an embodiment of the present utility model (viewpoint 2);

[0026] Figure 7 This is a schematic diagram of the partial structure of the face shell of an embodiment of the utility model;

[0027] The reference numerals in the drawings of the specification include:

[0028] Middle shell 1, front shell 2, display component 20, inner shell 21, bottom shell 3, groove 40, inclined guide surface 400, ridge 41, snap-fit guide surface 410, inclined guide section 42, power supply component 5, flow meter 6. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.

[0030] The accompanying drawings are for illustrative purposes only and are schematic rather than physical representations, and should not be construed as limiting this patent. To better illustrate the embodiments of the present invention, certain components of the accompanying drawings may be omitted, enlarged, or reduced in size, and do not represent the dimensions of actual products. It is understandable to those skilled in the art that certain well-known structures and their descriptions may be omitted from the accompanying drawings. Identical or similar reference numerals in the accompanying drawings of the embodiments of the present invention correspond to identical or similar components. In the description of the present invention, it should be understood that the terms "upper," "lower," "left," "right," "inner," "outer," and the like, indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction. Therefore, the terms describing positional relationships in the accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. Those skilled in the art will understand the specific meanings of the above terms based on specific circumstances.

[0031] like Figure 1 - Figure 7 As shown, the present invention is a correction instrument with a sealed structure, comprising a middle shell 1, a surface shell 2 and a bottom shell 3;

[0032] Among them, at least one of the face shell 2 and the bottom shell 3 is connected to the side of the middle shell 1, and a sealing structure is provided at the connection. The face shell 2 and the bottom shell 3 in this embodiment are respectively detachably connected to the two sides of the middle shell 1. The detachability is mainly for the convenience of manufacturing, and the produced shells are assembled into a whole.

[0033] The sealing structure includes a groove 40 conforming to the contour of the middle shell 1 , a ridge 41 that can be embedded in the groove 40 , and a sealing ring (not shown) disposed in the groove 40 .

[0034] The corrector is assembled from multiple shells, and a sealing structure is provided at the connection between adjacent shells to ensure good sealing performance and prevent rainwater from entering the corrector.

[0035] The sealing structure adopts a connection method of inlaying the groove 40 and the ridge 41, and placing a sealing ring between the two. After the two adjacent shells are assembled and matched, due to the elastic characteristics of the sealing ring, the small gap between the groove 40 and the ridge 41 can be completely sealed, and the airtightness is good.

[0036] Specifically, such as Figure 3 、 Figure 4 As shown, the ridge 41 has a locking guide surface 410 , and the groove 40 has an inclined guide surface 400 that matches the locking guide surface 410 .

[0037] The groove 40 and the ridge 41 in the present technical solution are respectively provided with a snap-fit guide surface 410 and an inclined guide surface 400. During the assembly or opening and closing process of each shell, the snap-fit guide surface 410 and the inclined guide surface 400 are mutually squeezed, and the groove 40 and the ridge 41 fit more tightly.

[0038] It should be noted that the locations of the grooves 40 and ridges 41 in the sealing structure are not specifically limited. The grooves 40 can be provided on both sides of the middle shell 1, and correspondingly, the ridges 41 can be provided on the face shell 2 and / or the bottom shell 3. Alternatively, as in the present embodiment, the grooves 40 can be provided on the face shell 2 and the bottom shell 3, and the ridges 41 can be provided on the middle shell 1. Figure 5 、 Figure 6 shown.

[0039] In addition, the groove 40 in the present technical solution is configured to be closed and connected end to end. In this way, the sealing performance of each housing of the corrector can be increased as much as possible.

[0040] like Figure 5 、 Figure 6 、 Figure 7 As shown, the groove 40 and / or the ridge 41 has one or more inclined guide sections 42 along the setting path.

[0041] The inclined guide section 42 is an inclined surface. On the one hand, it is to consider the stability of the sealing ring after installation to avoid vibration when opening and closing the face shell 2, which may cause the sealing ring to slightly shift and affect the airtightness of the groove 40 and the ridge 41. On the other hand, since the sealing structure is respectively arranged on two adjacent shells and cooperates with each other, after assembly or closing, it forms a structure that can limit the relative lateral or longitudinal movement of each shell, the clearance of each shell is effectively controlled, and the tightness is stronger.

[0042] In addition, if Figure 3 、 Figure 5 As shown, a cavity for accommodating a power supply assembly 5 is formed between the middle shell 1 and the bottom shell 3. The power supply assembly 5 includes at least two groups of lithium batteries, which can provide power for measurement and communication respectively.

[0043] Among them, an inner shell 21 is further provided between the front shell 2 and the middle shell 1. The control body, as well as various storage, computing and other components can be provided in the inner shell 21.

[0044] A display assembly 20 is provided in the face shell 2, and a glass panel, preferably tempered glass, is provided on the surface of the face shell 2.

[0045] In addition, the surface shell 2 and the middle shell 1 are connected by a hinge. The surface shell 2 and the middle shell 1 of the corrector are hinged by an axle pin. In the later maintenance, there is no need to remove the surface shell 2, and the installation is more convenient and quick.

[0046] The above connection method can use existing technology and is easy to implement. It does not fall within the scope of protection of this application. Therefore, it at least has the beneficial effects brought by the technical solutions of the above embodiments and will not be repeated here.

[0047] It should be noted that the application areas of this correction instrument include but are not limited to urban gas, petroleum, chemical industry, metallurgy and other industries.

[0048] The above are only embodiments of the present invention. Common knowledge such as the known specific structures and characteristics in the scheme is not described in detail here. Ordinary technicians in the relevant field are aware of all common technical knowledge in the technical field of the utility model before the application date or priority date, can obtain all existing technologies in the field, and have the ability to apply conventional experimental means before that date. Ordinary technicians in the relevant field can improve and implement this scheme based on their own abilities under the guidance of this application. Some typical known structures or methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for those skilled in the art, without departing from the structure of the utility model, they can also make several variations and improvements, which should also be regarded as the scope of protection of the utility model. These will not affect the effect of the implementation of the utility model and the practicality of the patent.

Claims

1. A corrector with a sealed structure, characterized in that: include: middle shell; At least one of the top shell and the bottom shell is connected to the side of the middle shell, and a sealing structure is provided at the connection; The sealing structure includes a groove conforming to the contour of the middle shell, a ridge that can be embedded in the groove, and a sealing ring arranged in the groove.

2. A corrector with a sealed structure as claimed in claim 1, characterized in that: The ridge has a clamping guide surface, and the groove has an inclined guide surface matched with the clamping guide surface.

3. A corrector with a sealed structure according to claim 1 or 2, characterized in that: The groove is configured to be closed with its end portions connected.

4. A corrector with a sealed structure as claimed in claim 3, characterized in that: The grooves and / or ridges have one or more inclined guide sections along the arrangement path.

5. A corrector with a sealed structure as claimed in claim 1, 2 or 4, characterized in that: A cavity for accommodating the power supply component is formed between the middle shell and the bottom shell.

6. A corrector with a sealed structure as claimed in claim 5, characterized in that: An inner shell is further provided between the surface shell and the middle shell.

7. A corrector with a sealed structure as claimed in claim 1, 2, 4 or 6, characterized in that: A display component is arranged in the face shell.

8. The corrector with a sealed structure according to claim 7, characterized in that: The surface shell and the middle shell are connected in a hinged manner.

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