A cover opening alarm structure of a volume correction instrument

Abstract

The utility model relates to a gas metering instrument technical field, concretely is a kind of volume correction instrument's uncovering alarm structure, and each correction instrument line board is installed on correction instrument front cover and correction instrument base, and the correction instrument line board on correction instrument front cover is provided with uncovering alarm electronic component, and switch alarm device is vertically provided on correction instrument base, battery is provided on back, uncovering induction shaft sleeve is installed on switch alarm device, uncovering induction shaft sleeve is provided with uncovering induction shaft, spring is provided on uncovering induction shaft and located in uncovering induction shaft sleeve, uncovering induction shaft sleeve cap is provided on the side of spring and located in the periphery of uncovering induction shaft sleeve, and one end of uncovering induction shaft is provided with magnetic steel, can be used under the condition of only using one line board simultaneously to the uncovering alarm function of front cover and battery compartment, while its simple structure, ingenious, cost controllable, for the similar anti-uncovering instrument design in this field also exist same technical inspiration, with good market application prospect.

Description

Technical Field

[0001] This utility model relates to the field of gas metering instrument technology, specifically to an open cover alarm structure for a volume corrector. Background Technology

[0002] A volume corrector is a professional metering auxiliary device that dynamically corrects the volume of gas. Its core function is to eliminate the influence of environmental factors on the accuracy of fluid volume measurement and ensure that the measurement results meet the metering requirements under standard conditions. It is a key device in the gas transmission and distribution system and is often installed outdoors or in unattended pressure regulating stations, metering stations and other places.

[0003] In practical applications, the casing of the volume corrector is the first physical barrier protecting its internal precision electronic components and parameter settings. However, unauthorized opening of the casing has become a prominent safety hazard and a means of metering fraud in the gas industry. Criminals illegally open the instrument casing to tamper with internal parameters or connecting wires in order to steal gas or interfere with normal metering. This not only causes huge economic losses to gas supply companies but also seriously undermines the accuracy and impartiality of metering data and may even lead to safety accidents.

[0004] While existing volume correction devices have some opening detection capabilities, most of them only record single-compartment opening alarms. This method has weak anti-tampering capabilities, is easily identified and bypassed, and poses certain security risks.

[0005] Based on the above reasons, this utility model designs an open cover alarm structure for a volume corrector. It is not only simple in structure, cost-controllable, and reliable in operation, but also can realize dual-compartment alarm function, making up for the shortcomings of the existing technology, effectively curbing illegal open cover behavior, and ensuring the safety and accuracy of gas metering. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide an open cover alarm structure for a volume corrector. This structure is not only simple in structure, cost-controllable, and reliable in operation, but also enables dual-compartment alarm function. It makes up for the shortcomings of the prior art, effectively curbs illegal open cover behavior, and ensures the safety and accuracy of gas metering.

[0007] To achieve the above objectives, this utility model provides an open-cover alarm structure for a volume corrector, including a corrector base, which is rotatably connected to a corrector front cover. A corrector battery compartment cover is provided on the back of the corrector base. A corrector circuit board is installed on both the corrector front cover and the corrector base. An open-cover alarm electronic component is provided on the corrector circuit board on the corrector front cover. A switch alarm device is vertically installed on the corrector base. A battery is provided on the back of the corrector base. An open-cover sensing sleeve is installed on the switch alarm device. An open-cover sensing shaft is provided inside the open-cover sensing sleeve. A spring is provided on the open-cover sensing shaft and inside the open-cover sensing sleeve. An open-cover sensing sleeve cap is provided on one side of the spring and outside the open-cover sensing sleeve. A magnet is provided at one end of the open-cover sensing shaft.

[0008] The battery is isolated from the correction device circuit board.

[0009] The alarm switch is located above the battery.

[0010] The magnet is located on one side of the cover-opening alarm electronic component.

[0011] The other end of the opening sensing shaft relative to the magnet is close to the rear cover of the corrector's battery compartment.

[0012] When both the front cover and the rear cover of the battery compartment of the corrector are closed, the spring is compressed by the rear cover of the battery compartment of the corrector. The end of the opening sensing shaft without a magnet is in close contact with the rear cover of the battery compartment of the corrector, while the end of the opening sensing shaft with a magnet is close to the opening alarm electronic component.

[0013] The base of the corrector and the front cover of the corrector are connected by a hinge.

[0014] Compared with existing technologies, this utility model features a vertically mounted switch alarm device on the base of the corrector. Utilizing the structural design's interaction between the cover-opening sensing shaft and bushing, and the bushing cap and spring, and through the sensing principle of the magnet relative to the cover-opening alarm electronic components, it can simultaneously trigger automatic alarms when both the front cover and the rear cover of the corrector's battery compartment are illegally opened. This achieves dual-compartment alarm functionality with only one switch alarm device, eliminating the need for an additional circuit board in the battery compartment and further saving on component usage. Through its simple and ingenious structural design, this utility model achieves dual cover-opening alarms for important instruments like volume correctors, ensuring the safety of the circuit board metering compartment and the independent battery compartment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is a schematic cross-sectional view of the battery compartment of this utility model in the open state.

[0017] Figure 3 This is a schematic diagram of the metering chamber of this utility model in the open state.

[0018] Figure 4 This is a schematic diagram of the switch alarm device of this utility model.

[0019] Figure 5 This is a schematic cross-sectional view of the switch alarm device of this utility model.

[0020] Figure 6 This is a schematic cross-sectional view of the switch alarm device of the present invention when the battery compartment is open.

[0021] Explanation of reference numerals in the attached figures: 1. Front cover of the corrector; 2. Base of the corrector; 3. Rear cover of the battery compartment of the corrector; 4. Circuit board of the corrector; 41. Electronic components for opening the cover alarm; 5. Switch alarm device; 51. Opening the cover sensing shaft; 52. Opening the cover sensing shaft sleeve; 53. Opening the cover sensing shaft sleeve cap; 54. Spring; 55. Magnet; 6. Battery. Detailed Implementation

[0022] The present invention will now be further described with reference to the accompanying drawings.

[0023] See Figures 1-6 This utility model provides an open cover alarm structure for a volume corrector, including a corrector base 2, which is rotatably connected to a corrector front cover 1. A corrector battery compartment back cover 3 is provided on the back of the corrector base 2. A corrector circuit board 4 is installed on both the corrector front cover 1 and the corrector base 2. An open cover alarm electronic component 41 is provided on the corrector circuit board 4 on the corrector front cover 1. A switch alarm device 5 is vertically installed on the corrector base 2. A battery 6 is provided on the back of the corrector base 2. An open cover sensing sleeve 52 is installed on the switch alarm device 5. An open cover sensing shaft 51 is provided inside the open cover sensing sleeve 52. A spring 54 is provided on the open cover sensing shaft 51 and inside the open cover sensing sleeve 52. An open cover sensing sleeve cap 53 is provided on one side of the spring 54 and outside the open cover sensing sleeve 52. One end of the open cover sensing shaft 51 is provided with...

[0024] Battery 6 is isolated from the corrector circuit board 4.

[0025] The switch alarm device 5 is located above the battery 6.

[0026] Magnet 55 is located on one side of the cover-opening alarm electronic component 41.

[0027] The other end of the opening sensing shaft 51 relative to the magnet 55 is close to the rear cover 3 of the corrector battery compartment.

[0028] When both the front cover 1 and the rear cover 3 of the battery compartment of the corrector are closed, the spring 54 is compressed by the rear cover 3 of the battery compartment of the corrector. The end of the opening sensing shaft 51 without the magnet 55 is in close contact with the rear cover 3 of the battery compartment of the corrector, and the end of the opening sensing shaft 51 with the magnet 55 is close to the opening alarm electronic component 41.

[0029] The base 2 of the corrector is connected to the front cover 1 of the corrector by a hinge.

[0030] Working principle: See Figures 1-6 This utility model does not require much debugging. In actual use, you only need to completely close the front cover 1 of the corrector and the rear cover 3 of the battery compartment of the corrector. At this time, the rear cover 3 of the battery compartment of the corrector squeezes the spring 54 inside the switch alarm device 5, so that the cover opening sensing shaft 51 approaches the cover opening alarm electronic component 41, and the cover opening alarm electronic component 41 is in the normally closed state.

[0031] If the front cover 1 of the corrector is opened, the switch alarm device 5 mounted on the base 2 of the corrector will move away from the cover-opening alarm electronic component 41 mounted on the circuit board 4 of the corrector. At this time, the cover-opening alarm electronic component 41 will be in a normally open state, thereby triggering the corrector's cover-opening alarm. Similarly, if the rear cover 3 of the corrector's battery compartment is opened, the previously compressed spring 54 will no longer be compressed, causing the cover-opening sensing shaft 51 to move away from the cover-opening alarm electronic component 41. At this time, the cover-opening alarm electronic component 41 will also be in a normally open state, thereby triggering the corrector's cover-opening alarm. In this way, the dual-compartment alarm function is realized.

[0032] As for the wiring and electrical connection relationships of the circuit board, electronic components and batteries in this utility model, they can be connected in accordance with existing technology. They are common and well-known technical means and have no necessary logical relationship with solving the problem to be solved in this application. They are not the main innovation of this application, nor are they the objects to be protected.

[0033] The above are merely preferred embodiments of this utility model, intended only to aid in understanding the method and core concept of this application. The scope of protection of this utility model is not limited to the above embodiments; all technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the scope of protection of this utility model.

[0034] This invention addresses the shortcomings of existing volume correctors, which can only provide single-compartment opening alarms and offer limited overall protection. By cleverly utilizing springs, bushings, and caps, it enables simultaneous opening alarms for both the front cover and battery compartment using only one circuit board. Furthermore, its simple structure, ingenious design, and controllable cost provide similar technical inspiration for the design of similar anti-opening instruments in the field, demonstrating promising market application prospects.

Claims

1. A cover-opening alarm structure for a volume corrector, comprising a corrector base (2), wherein the corrector base (2) is rotatably connected to a corrector front cover (1), and a corrector battery compartment rear cover (3) is provided on the back of the corrector base (2), characterized in that, A circuit board (4) is installed on the front cover (1) and the base (2) of the corrector. An open cover alarm electronic component (41) is provided on the circuit board (4) on the front cover (1). A switch alarm device (5) is vertically provided on the base (2). A battery (6) is provided on the back of the base (2). An open cover sensing sleeve (52) is installed on the switch alarm device (5). An open cover sensing shaft (51) is provided inside the open cover sensing sleeve (52). A spring (54) is provided on the open cover sensing shaft (51) and inside the open cover sensing sleeve (52). An open cover sensing sleeve cap (53) is provided on one side of the spring (54) and outside the open cover sensing sleeve (52). A magnet (55) is provided at one end of the open cover sensing shaft (51).

2. The cover-opening alarm structure of the volume corrector according to claim 1, characterized in that, The battery (6) is isolated from the circuit board (4) of the corrector.

3. The cover-opening alarm structure of the volume corrector according to claim 2, characterized in that, The switch alarm device (5) is located above the battery (6).

4. The cover-opening alarm structure of the volume corrector according to claim 1, characterized in that, The magnet (55) is located on one side of the cover-opening alarm electronic component (41).

5. The cover-opening alarm structure of the volume corrector according to claim 4, characterized in that, The other end of the opening sensing shaft (51) relative to the magnet (55) is close to the rear cover (3) of the corrector battery compartment.

6. The cover-opening alarm structure of the volume corrector according to claim 5, characterized in that, When both the front cover (1) and the rear cover (3) of the battery compartment of the corrector are closed, the spring (54) is compressed by the rear cover (3) of the battery compartment of the corrector. The end of the opening sensing shaft (51) without the magnet (55) is close to the rear cover (3) of the battery compartment of the corrector, and the end of the opening sensing shaft (51) with the magnet (55) is close to the opening alarm electronic component (41).

7. The cover-opening alarm structure of the volume corrector according to claim 1, characterized in that, The base (2) of the corrector is connected to the front cover (1) of the corrector by a hinge.

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