Fuel gas metering box control terminal

Abstract

The utility model discloses a fuel gas metering box control terminal, which comprises a shell assembly with a hollow structure, the shell assembly is provided with an installation cavity and a wiring cavity, the installation cavity is used for installing a control module assembly, the control module assembly is provided with a plurality of wire sockets, the wire sockets are provided with plugs in one-to-one correspondence, and the plugs are inserted into the wiring cavity. A plurality of communicating holes for a plug to be inserted from the wiring cavity are formed between the mounting cavity and the wiring cavity, and the wiring cavity is provided with at least one threading hole and a mounting cover which is arranged in a detachable mode. Two modules in a traditional structure are mainly combined into one, and the installation cavity and the wiring cavity which are relatively independent are arranged, so that a wire group is conveniently and quickly connected, a control module assembly is not influenced, overall stacking, moving, placing and the like are facilitated, and the reliability is good.

Description

Technical Field

[0001] This utility model relates to the field of intelligent gas metering equipment, specifically to a gas metering box control terminal. Background Technology

[0002] With the continuous growth of natural gas consumption in my country, natural gas safety has become increasingly important. Traditional intelligent metering cabinets are basically composed of mechanical metering and pressure regulating cabinets, intelligent industrial gas meters, emergency shut-off valve control boxes, combustible gas leak alarms, combustible gas leak alarm control boxes, explosion-proof axial flow fans, and explosion-proof axial flow fan control boxes. The combustible gas alarm is controlled by the combustible gas leak alarm control box. The control box uploads the detected combustible gas concentration value and alarm information to the gas platform. After secondary analysis by the gas platform, it then controls other control boxes, indirectly controlling equipment such as explosion-proof axial flow fans and emergency shut-off valves. This process is complex and lacks real-time performance.

[0003] With technological advancements, intelligent control systems for metering cabinets have emerged, such as the patent with patent number "CN116658827A" entitled "An Explosion-proof Intelligent Metering Cabinet System," primarily designed to meet the needs of accurate metering, remote monitoring, and intelligent alarms. During their research, the applicant discovered that these systems generally employ a scheme where the junction box and control module are independently configured, making overall installation cumbersome. Furthermore, the wiring terminals of the control module are typically exposed and easily damaged, thus affecting its functional reliability. Utility Model Content

[0004] In view of this, the present invention provides a gas metering box control terminal, which aims to solve the problems of inconvenient installation and poor reliability of current smart metering box terminals.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A gas metering box control terminal, the key features of which are: a hollow housing assembly having a mounting cavity and a wiring cavity, the mounting cavity for mounting a control module assembly having multiple wire sockets having corresponding plugs, multiple connecting holes for inserting plugs from the wiring cavity between the mounting cavity and the wiring cavity, the wiring cavity having at least one through hole, and a detachable mounting cover.

[0007] By adopting the above solution, the two traditional modules are combined into one, with relatively independent mounting and wiring cavities, as well as an openable mounting cover. This facilitates quick connection of wiring harnesses without affecting the control module components, and makes it easy to stack, move, and place the entire module, resulting in better reliability.

[0008] Preferably, the housing assembly includes a fixedly connected bottom shell and a front cover. The mounting cavity and wiring cavity are formed by the bottom shell and the front cover. The front cover has a window corresponding to the wiring cavity, the mounting cover matches this window, and there are sealing structures between the mounting cover and the window, and between the front cover and the bottom shell. This modular design reduces processing and assembly difficulty and ensures adequate internal sealing.

[0009] Preferably, the mounting cover has a fixing hole for connection with the housing assembly, and the fixing hole has radially inwardly protruding anti-detachment protrusions. With this design, during the installation and removal of the mounting cover, the anti-detachment protrusions hold the screws within the fixing hole, preventing them from falling out or being lost.

[0010] Preferably, the inner side of the front cover has connecting screw posts, and the bottom shell has connecting countersunk holes that correspond one-to-one with the connecting screw posts, the connecting countersunk holes penetrating both sides of the bottom shell in the thickness direction. With this design, the connecting screws of the front cover and bottom shell pass through from back to front, avoiding exposed screw holes and keeping them in a hidden position, thus reducing the probability of accidental disassembly.

[0011] Preferably, the housing assembly has fixing plates on both sides of its rear width direction. Each fixing plate includes a shielding connection portion with a height difference and a suspension portion. The width of the shielding connection portion is greater than the diameter of the connecting countersunk hole. The suspension portions of the two fixing plates have symmetrically arranged suspension holes A. Using this solution, the connection holes between the bottom shell and the front cover can be shielded, further improving the overall appearance quality. Simultaneously, the suspension portion provides convenient and reliable suspension.

[0012] Preferably, the housing assembly has fixing blocks at all four corners of its back side, and each fixing block has a hanging hole B.

[0013] Preferably, the bottom shell and front cover have lead-sealing holes facing each other on both sides. This design improves overall packaging security and prevents unauthorized disassembly.

[0014] Preferably, the mounting cavity has a multi-layered support structure for mounting the control module components. This design improves the compactness of the internal mounting structure and reduces the overall volume.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] The gas metering box control terminal provided by this utility model mainly combines the two modules of the traditional structure into one, and sets up relatively independent installation cavity and wiring cavity. This facilitates quick connection of the wiring group without affecting the control module components, and makes it easy to stack, move and place as a whole, and has good reliability. Attached Figure Description

[0017] Figure 1 This is a front view of the present utility model;

[0018] Figure 2 for Figure 1 Sectional view at point AA;

[0019] Figure 3 for Figure 1 Sectional view at point AA;

[0020] Figure 4 for Figure 1 A schematic diagram of the dorsal side structure;

[0021] Figure 5 This is a schematic diagram of the internal structure of the housing assembly;

[0022] Figure 6 This is a schematic diagram of the bottom shell structure;

[0023] Figure 7 This is a schematic diagram of the back structure of the bottom shell;

[0024] Figure 8 This is a schematic diagram of the front cover structure;

[0025] Figure 9 This is a schematic diagram of the inside of the front cover;

[0026] Figure 10 This is a schematic diagram of the cover installation structure;

[0027] Figure 11 This is a schematic diagram of the installation of the fixing block. Detailed Implementation

[0028] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0029] refer to Figures 1 to 11 The gas metering box control terminal shown mainly includes a hollow housing assembly 100. The housing assembly 100 has a mounting cavity 110 and a wiring cavity 120, which are relatively independent. The mounting cavity 110 is used to install a control module assembly 700. The control module assembly 700 has multiple wire sockets 710, and each wire socket 710 has a corresponding plug 130. There are multiple connecting holes 140 between the mounting cavity 110 and the wiring cavity 120 for the plug 130 to be inserted into the wiring cavity 120. The wiring cavity 120 has at least one through hole and a detachable mounting cover 200.

[0030] In specific implementation, the housing assembly 100 includes a fixedly connected bottom shell 300 and front cover 400. The mounting cavity 110 and the wiring cavity 120 are formed by the bottom shell 300 and the front cover 400 together, as shown in the figure. The front cover 400 has a partition 430, which divides the space enclosed by the bottom shell 300 and the front cover 400 into the mounting cavity 110 and the wiring cavity 120. At the same time, the notch of the partition 430 forms a connecting hole 140 for the plug 130 to be inserted into the wire socket 710 located in the mounting cavity 110. A gland 160 is installed on the bottom shell 300 corresponding to the wire hole.

[0031] In addition, to facilitate wiring operations, the front cover 400 has a window 410 at the position corresponding to the wiring cavity 120. The mounting cover 200 matches the window 410, and there are sealing structures between the mounting cover 200 and the window 410, as well as between the front cover 400 and the bottom shell 300. Specifically, the front cover 400 has an annular groove A440 at the position corresponding to the window 410. The annular groove A440 is equipped with a sealing ring A411. Correspondingly, the mounting cover 200 has a pressing part A220 that matches the annular groove A440. When the mounting cover 200 is installed on the front cover 400, the pressing part A220 is pressed into the annular groove A440. Similarly, the outer wall end face of the bottom shell 300 has an annular groove B320, which is equipped with a sealing ring B321. Correspondingly, the inner side of the front cover 400 has a pressing part B450 that matches the annular groove B320.

[0032] In practice, the mounting cover 200 has a fixing hole 210 for connecting with the housing assembly 100. The fixing hole 210 has a radially inwardly protruding anti-detachment protrusion 211. The mounting cover 200 is usually made of resin material. Therefore, during the disassembly and assembly process, the screw and the anti-detachment protrusion 211 are in an interference fit state, which can fully prevent them from falling off and being lost.

[0033] In this embodiment, the front cover 400 and the bottom shell 300 are connected and installed from back to front. Specifically, the front cover 400 has connecting screw post 420 on its inner side, and the bottom shell 300 has connecting countersunk holes 310 that correspond one-to-one with the connecting screw post 420. The connecting countersunk holes 310 penetrate both sides of the bottom shell 300 in the thickness direction. During installation, the connecting screw is inserted from the back of the bottom shell 300 directly opposite the connecting countersunk hole 310 and connected to the corresponding connecting screw post 420.

[0034] The control terminal of this application is usually mounted on a wall. Therefore, this application provides two main mounting structures, the first of which is as follows: Figure 1 and Figure 4As shown, the housing assembly 100 has fixing plates 500 on both sides of its rear width direction. The fixing plates 500 include a shielding connection part 510 and a suspension part 520 with a height difference. In specific implementation, the fixing plates 500 are generally Z-shaped, with the shielding connection part 510 and the suspension part 520 arranged in parallel. The length of the fixing plates 500 is basically the same as the height of the control terminal. The width of the shielding connection part 510 is greater than the diameter of the connecting countersunk hole 310. The suspension parts 520 of the two fixing plates 500 have symmetrically arranged suspension holes A530. In this way, when the fixing plates 500 are connected to the bottom shell 300, they can shield the connecting countersunk hole 310, reduce the exposure of the main body connecting screws, and help prevent accidental disassembly.

[0035] Another structure, such as Figure 11 As shown, the four corners of the back of the housing assembly 100 are provided with fixing blocks 600, and the fixing blocks 600 are provided with hanging holes B610. The separate fixing block structure is beneficial to saving costs and is relatively easier to install.

[0036] To further enhance safety, the bottom shell 300 and the front cover 400 have lead-sealed holes 150 facing each other on both sides.

[0037] The mounting cavity 110 has a multi-layer support structure for mounting the control module assembly 700. Specifically, the control module assembly 700 mainly includes a lower PCB board 720, an upper PCB board 730, and a power module 740. The bottom of the mounting cavity 110 has a grid layer 170, and support column assemblies A180 and B190 for supporting the lower PCB board 720 and the upper PCB board 730, respectively. The upper PCB board 730 is connected to a display screen 731, and the front cover 400 has a transparent window 460 corresponding to the display screen 731.

[0038] use Figures 1 to 11 The gas metering box control terminal shown can be sold as a finished product after the control module component 700 is installed in the mounting cavity 110, the front cover 400, mounting cover 200, fixing plate 500 or fixing block 600 are installed in sequence, and the lead seal is applied. During on-site installation, only the mounting cover 200 needs to be opened to connect the required circuits without affecting the control module component 700. After the circuit connection is completed, it can be mounted as designed.

[0039] Finally, it should be noted that the above description is merely a preferred embodiment of the present utility model. Those skilled in the art, under the guidance of the present utility model, can make various similar representations without departing from the spirit and claims of the present utility model, and such modifications all fall within the protection scope of the present utility model.

Claims

1. A gas metering box control terminal, characterized in that: The device includes a hollow housing assembly (100) having a mounting cavity (110) and a wiring cavity (120), the mounting cavity (110) for mounting a control module assembly (700) having a plurality of wire sockets (710) having a corresponding plug (130) between the mounting cavity (110) and the wiring cavity (120) for inserting the plug (130) from the wiring cavity (120), the wiring cavity (120) having at least one through hole, and a removable mounting cover (200).

2. The gas metering box control terminal according to claim 1, characterized in that: The housing assembly (100) includes a fixedly connected bottom shell (300) and front cover (400). The mounting cavity (110) and wiring cavity (120) are formed by the bottom shell (300) and front cover (400). The front cover (400) has a window (410) at a position corresponding to the wiring cavity (120). The mounting cover (200) matches the window (410), and there is a sealing structure between the mounting cover (200) and the window (410), as well as between the front cover (400) and the bottom shell (300).

3. The gas metering box control terminal according to claim 1 or 2, characterized in that: The mounting cover (200) has a fixing hole (210) for connecting to the housing assembly (100), and the fixing hole (210) has a radially inwardly protruding anti-detachment protrusion (211).

4. The gas metering box control terminal according to claim 2, characterized in that: The front cover (400) has a connecting screw post (420) on its inner side, and the bottom shell (300) has a connecting countersunk hole (310) that corresponds one-to-one with the connecting screw post (420). The connecting countersunk hole (310) penetrates both sides of the bottom shell (300) in the thickness direction.

5. The gas metering box control terminal according to claim 4, characterized in that: The housing assembly (100) has fixing plates (500) on both sides of its back width direction. The fixing plates (500) include a shielding connection part (510) with a height difference and a suspension part (520). The width of the shielding connection part (510) is greater than the diameter of the connecting countersunk hole (310). The suspension parts (520) of the two fixing plates (500) have symmetrically arranged suspension holes A (530).

6. The gas metering box control terminal according to claim 4, characterized in that: The housing assembly (100) has four fixing blocks (600) at the four corners of its back side, and each fixing block (600) has a hanging hole B (610).

7. The gas metering box control terminal according to claim 2, 4, 5, or 6, characterized in that: The bottom shell (300) and the front cover (400) have lead-sealed holes (150) facing each other on both sides.

8. The gas metering box control terminal according to claim 2, characterized in that: The mounting cavity (110) has a multi-layer support structure for mounting the control module assembly (700).

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