Electric energy meter with flame-retardant function

Abstract

The utility model relates to an electric energy meter with a flame retardant function, which comprises a shell, an execution unit and a display unit, a processing unit is arranged between the execution unit and the display unit, a terminal connecting piece is arranged on the outer side of the shell, an electric wire is connected to the terminal connecting piece, a first flame retardant storage box is arranged in the shell, and a second flame retardant storage box is arranged in the shell. A spraying pump is arranged on the first flame retardant storage box, and at least one temperature sensor is arranged in the shell; and a second flame retardant storage box is arranged on the inner wall of the shell. Efficient safety protection is achieved through the active and passive combined dual-flame-retardant design, a temperature sensor in a shell detects the temperature and transmits a signal to a processing unit, a spraying pump of a first flame retardant storage box is controlled, and a flame retardant is sprayed at the initial stage of a fire behavior to block combustion; and the plastic second flame retardant storage box on the inner wall of the shell can enable the internal flame retardant to naturally flow out to realize passive fire extinguishing when the fire breaks through active protection and burns through the box body, so that the fire risk is reduced through double protection.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electric energy meter especially, it is an electric energy meter with flame -retardant function. BACKGROUND

[0002] As the core instrument of electric energy measurement, electric energy meter is widely used in industrial, commercial and residential electricity fields, and the reliability and safety of its performance are directly related to the stable operation of power system, the fairness of trade settlement and the safety of life and property of users. Electric energy meter often causes fire due to internal temperature being too high in long-term operation process, and the main reasons include that the overheat of connection terminal and other elements caused by the overload of electric load exceeding the rated capacity, installation process defects (such as that the contact resistance is increased due to that the connection screw is not tightened or copper-aluminum transition treatment is not done), that environmental humidity accelerates insulation aging, and external faults such as lightning overvoltage or line short circuit, especially in summer peak period, line aging and overload operation are more likely to cause local overheating, and there is a huge fire hazard. SUMMARY

[0003] To solve the above problems, the utility model provides an electric energy meter with flame -retardant function.

[0004] The technical scheme adopted by the utility model to solve its technical problems is:

[0005] An electric energy meter with flame -retardant function, including the casing, the execution unit and the display unit in the casing, the processing unit is arranged between the execution unit and the display unit, the terminal connecting piece is arranged on the outside of the casing, the electric wire is connected on the terminal connecting piece, the first flame -retardant agent storage tank is arranged in the casing, the spraying pump is arranged on the first flame -retardant agent storage tank, at least one temperature sensor is arranged in the casing, the temperature sensor and the spraying pump are connected to the processing unit, the temperature sensor detects the temperature in the casing and is handled by the processing unit, and the processing unit controls the spraying pump to work according to the processing result;Second flame -retardant agent storage tank is arranged on the inner wall of the casing, and the second flame -retardant agent storage tank is made of plastic material.

[0006] Further specifically, the processing unit is arranged on the flame -retardant agent storage tank, and at least one nozzle of the spraying pump is aligned with the processing unit.

[0007] Further specifically, the flame -retardant agent in the first flame -retardant agent storage tank and the second flame -retardant agent storage tank is all perfluorohexanone.

[0008] Further specifically, the second flame -retardant agent storage tank is arranged in plurality and is uniformly distributed on the inside of the casing.

[0009] Further specifically, the second flame -retardant agent storage tank is connected to the inner wall of the casing through the fixed assembly.

[0010] Further, the fixing assembly comprises a sliding rail arranged on the inside of the shell and a sliding groove arranged on the second fire retardant storage tank.

[0011] Further, the sliding rail and the sliding groove are both in T-shaped structure.

[0012] Further, the second fire retardant storage tank comprises a tank body and a cover arranged on the tank body, and fixing grooves are arranged on both sides of the tank body, and fixing blocks are arranged on the cover, the fixing blocks are inserted into the fixing grooves, positioning holes are arranged on the fixing grooves, and positioning bead spring plungers are arranged on the fixing blocks and matched with the positioning holes.

[0013] Further, a sealing ring is arranged between the tank body and the cover.

[0014] The utility model discloses the beneficial effect is: through the initiative and passive combination double fire -retardant design realizes efficient safety protection, on one hand, the temperature sensor in the shell detects the internal temperature in real time, and after signal transmission to the processing unit, the processing unit can control the spraying pump on the first fire retardant storage tank according to the temperature situation and starts, and the fire retardant is sprayed in the initiative in the initial stage of the fire, and the combustion is blocked, on the other hand, the second fire retardant storage tank of the plastic material is made to the inner wall of the shell, and when the fire breaks through the initiative protection and the temperature rises to burn the tank body, the internal fire retardant is let out naturally and realizes passive bottom fire extinguishing, and the fire risk is further reduced. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the external structure schematic diagram of the utility model discloses the electric energy meter with fire -retardant function;

[0016] Figure 2 It is the internal structure schematic diagram of the utility model discloses the electric energy meter with fire -retardant function;

[0017] Figure 3 It is the structure schematic diagram of the second fire retardant storage tank of the utility model;

[0018] Figure 4 It is Figure 3 The enlarged structure schematic diagram of part A in it.

[0019] In the drawing: 10, shell;20, execution unit;30, display unit;40, processing unit;50, terminal connecting piece;60, electric wire;70, first fire retardant storage tank;71, spraying pump;72, temperature sensor;80, second fire retardant storage tank;81, sliding rail;82, sliding groove;83, tank body;84, cover;85, fixing groove;86, fixing block;87, positioning hole;88, positioning bead spring plunger. DETAILED DESCRIPTION

[0020] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0021] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. The direction of movement is also a relative direction of movement, and does not limit the absolute direction of movement. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0022] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as there is no conflict between them.

[0023] As Figure 1 With Figure 2The application provides an electric energy meter with a fire-retardant function, which comprises a shell 10, an execution unit 20 and a display unit 30 located in the shell 10, and a processing unit 40 arranged between the execution unit 20 and the display unit 30; the shell 10 is a bearing component of the application, an internal closed space is formed for assembling other components, the execution unit 20 is responsible for the collection and conversion of electric energy signals and transmits the signals to the processing unit 40, and the processing unit 40 is used for receiving the signals of the execution unit 20, processing the signals and outputting the signals to the display unit 30 for display, wherein the execution unit 20 mainly comprises a current collection component, a voltage collection component and a signal conditioning circuit, and the processing unit 40 mainly comprises a processing chip and a peripheral circuit; a terminal connecting piece 50 is arranged outside the shell 10, and an electric wire 60 is connected to the terminal connecting piece 50, so that the electric energy meter and an external circuit are connected for electric energy and signal transmission.

[0024] Based on this, Figure 2 The application is provided with a first fire-retardant agent storage tank 70 in the shell 10, and a spraying pump 71 is arranged on the first fire-retardant agent storage tank 70, the liquid inlet of the spraying pump 71 is connected to the first fire-retardant agent storage tank 70 and inserted into the fire-retardant agent liquid, at least one spray head is arranged on the spraying pump 71 through a pipeline, and the spray head sprays the fire-retardant agent to a required position; at least one temperature sensor 72 is arranged in the shell 10, the temperature sensor 72 is arranged at a position with a high temperature, and the spray head also aims at the position with a high temperature, wherein the position with a high temperature also includes the processing unit 40; the temperature sensor 72 and the spraying pump 71 are connected to the processing unit 40, the temperature sensor 72 detects the temperature in the shell 10 and transmits the temperature to the processing unit 40, the processing unit 40 judges whether the detected temperature falls within a pre-set temperature threshold, if yes, the processing unit 40 sends a control signal to the spraying pump 71, the spraying pump 71 sprays the fire-retardant agent to extinguish the fire and reduce the temperature, and if not, no action is performed; wherein the temperature sensor 72 can also be replaced by a fire detector.

[0025] Further, an electromagnetic valve can also be arranged at each spray head according to the need, the electromagnetic valve corresponding to the position of the temperature sensor 72 is opened according to the position of the temperature sensor 72, and the spraying operation is only performed on the position with a high temperature.

[0026] As Figure 2The second fire retardant storage tank 80 is arranged on the inner wall of the shell 10, is assembled with the circumferential side wall or the inner side surface of the shell 10, and is stably connected with the shell 10. The second fire retardant storage tank 80 can be arranged as an integrated structure or can be arranged as multiple separate assemblies. The second fire retardant storage tank 80 is made of plastic material, and the plastic material has a relatively low melting point and a heat resistance limit. When the temperature in the shell 10 increases due to the expansion of the fire and exceeds the control range, the tank body 83 made of plastic material can be burned through under the action of high temperature, so that the fire retardant stored in the tank can flow out naturally, and the fire is inhibited or extinguished by passive release. The plastic material itself is easy to process and shape, and can better adapt to the shape of the inner wall of the shell 10 to achieve stable installation.

[0027] The fire retardant in the first fire retardant storage tank 70 and the second fire retardant storage tank 80 is all perfluorohexanone. Perfluorohexanone can extinguish fire by inhibiting free radical chain transmission in the combustion reaction. For small fires caused by short circuit and overload of electrical appliances, perfluorohexanone can quickly cover the fire source, block the combustion, and reduce the burning time of the core components of the electrical appliances. Perfluorohexanone has good insulation performance and will not cause secondary short circuit of the electrical appliances during fire extinguishing, thereby avoiding additional electrical damage to the electrical appliances during fire extinguishing.

[0028] The second fire retardant storage tank 80 is connected to the inner wall of the shell 10 through a fixing assembly. The fixing assembly includes a sliding rail 81 arranged on the inside of the shell 10 and a sliding groove 82 arranged on the second fire retardant storage tank 80. The sliding groove 82 is inserted into the sliding rail 81. The sliding groove 82 on the second fire retardant storage tank 80 is aligned with the sliding rail 81 on the inner wall of the shell 10, and the sliding groove 82 is smoothly inserted into the sliding rail 81 along the length direction of the sliding rail 81. The connection and fixation of the storage tank and the inner wall of the shell 10 are completed. When the fire retardant is repaired or replaced, the second fire retardant storage tank 80 can be pulled out along the direction of the sliding rail 81 and opened. The operation is simple, and the normal operation of other components in the electrical energy meter is not affected.

[0029] The sliding rail 81 and the sliding groove 82 are both in T-shaped structure, which forms precise fitting. The T-shaped structure not only enables smooth insertion and installation of the sliding groove 82 along the length direction of the sliding rail 81, but also limits the displacement of the second fire retardant storage tank 80 in the direction perpendicular to the sliding rail 81, thereby avoiding loosening or deviation of the storage tank due to vibration and other factors during the operation of the electrical energy meter, and ensuring that the storage tank is always stably fixed at the preset position on the inner wall of the shell 10. Other shapes such as I-shaped structure and dovetail-shaped structure can also be selected according to needs.

[0030] As Figure 3 With Figure 4The second fire retardant storage tank 80 includes a tank body 83 and a cover 84 on the tank body 83, and the tank body 83 and the cover 84 are combined to form an internal containing space for filling the fire retardant. Fixed grooves 85 are arranged on both sides of the tank body 83, and corresponding fixed blocks 86 are arranged on the cover 84, which can be inserted into the fixed grooves 85. The shape and size of the fixed blocks 86 match the fixed grooves 85, so that when the cover 84 is closed, the fixed blocks 86 can be inserted into the fixed grooves 85, and the positioning butt joint of the tank body 83 and the cover 84 is realized.

[0031] In order to further improve the stability of the connection between the tank body 83 and the cover 84, and avoid separation of the two due to vibration or external force, causing the fire retardant to leak, positioning holes 87 are arranged on the fixed grooves 85 of the tank body 83, which penetrate the side walls of the fixed grooves 85. At the same time, positioning bead spring plungers 88 are arranged on the fixed blocks 86 of the cover 84, and the positioning beads at the ends thereof can be stretched outward under the action of the spring force. When the fixed blocks 86 are inserted into the fixed grooves 85, the positioning beads will be compressed by the inner wall of the fixed grooves 85 as the insertion action advances, until the fixed blocks 86 are inserted to the preset position and the positioning beads are aligned with the positioning holes 87 on the fixed grooves 85. At this time, the spring resets, the positioning beads pop out and are clamped into the positioning holes 87, and the fixed blocks 86 are locked in the fixed grooves 85 through the cooperation of the positioning beads and the positioning holes 87, finally realizing the stable connection of the tank body 83 and the cover 84, and guaranteeing the sealing property and structural stability of the second fire retardant storage tank 80.

[0032] A sealing ring is arranged between the tank body 83 and the cover 84, which can be embedded in the annular groove at the top of the tank body 83 or the corresponding position at the bottom of the cover 84, further improving the overall sealing property.

[0033] The application can greatly reduce the risk of fire through the combination of active and passive double-layer fire retardant protection. The active end is monitored by the temperature sensor 72 in real time, and the processing unit 40 accurately judges and controls the spraying pump 71 of the first fire retardant storage tank 70 to directionally spray perfluorohexone to quickly intervene in the initial fire; the passive end relies on the second fire retardant storage tank 80 on the inner wall of the shell 10, and when the plastic tank body 83 is burned through, the perfluorohexone naturally flows out to form secondary protection. Perfluorohexone has the characteristics of efficient fire extinguishing, insulation, no corrosion, environmental protection and low toxicity, which is suitable for the needs of electrical appliance scenes. At the same time, the second storage tank is conveniently installed through the T-shaped sliding rail 81 and the sliding groove 82, the tank body 83 and the cover 84 are buckled through the positioning bead spring plunger 88 and are matched with the sealing ring to prevent leakage and pollution, and the processing unit 40 filters the temperature signal to avoid the misstart of the spraying pump 71; the metering, data presentation and transmission functions of the terminal connecting piece 50 are not affected.

[0034] It should be emphasized that: the above is only the preferred embodiment of the present application, not any form of the present application for any restrictions, in accordance with the technical essence of the present application for any simple modification, equivalent changes and modifications of the above examples, still belong to the scope of the present application technical scheme.

Claims

1. An electric energy meter with a flame-retardant function, characterized in that, The application relates to a shell (10), an execution unit (20) and a display unit (30) in the shell (10), a processing unit (40) arranged between the execution unit (20) and the display unit (30), a terminal connector (50) arranged outside the shell (10), an electric wire (60) connected to the terminal connector (50), a first fire-retardant storage tank (70) arranged in the shell (10), a spraying pump (71) arranged on the first fire-retardant storage tank (70), at least one temperature sensor (72) arranged in the shell (10), the temperature sensor (72) and the spraying pump (71) being connected to the processing unit (40), the temperature sensor (72) detecting the temperature in the shell (10) and being processed by the processing unit (40), the processing unit (40) controlling the spraying pump (71) to work according to the processing result, and a second fire-retardant storage tank (80) arranged on the inner wall of the shell (10), the second fire-retardant storage tank (80) being made of plastic.

2. The electric energy meter with the fire-retardant function according to claim 1, characterized in that, The processing unit (40) is arranged on the fire-retardant storage tank, and at least one nozzle of the spraying pump (71) is aimed at the processing unit (40).

3. The electric energy meter with the fire-retardant function according to claim 1, characterized in that, The fire-retardant in the first fire-retardant storage tank (70) and the second fire-retardant storage tank (80) is all perfluorohexanone.

4. The electric energy meter with the fire-retardant function according to claim 1, characterized in that, The second fire-retardant storage tank (80) is arranged in plurality and uniformly distributed on the inside of the shell (10).

5. The electric energy meter with the fire-retardant function according to claim 1, characterized in that, The second fire-retardant storage tank (80) is connected to the inner wall of the shell (10) through a fixing assembly.

6. The electric energy meter with the fire-retardant function according to claim 5, characterized in that, The fixing assembly comprises a sliding rail (81) arranged on the inside of the shell (10) and a sliding groove (82) arranged on the second fire-retardant storage tank (80), and the sliding groove (82) is inserted into the sliding rail (81).

7. The electric energy meter with the fire-retardant function according to claim 6, characterized in that, The sliding rail (81) and the sliding groove (82) are both T-shaped structures.

8. The electric energy meter with the fire-retardant function according to claim 5, characterized in that, The second fire-retardant storage tank (80) comprises a tank body (83) and a cover (84) arranged on the tank body (83), fixing grooves (85) are arranged on both sides of the tank body (83), corresponding fixing blocks (86) are arranged on the cover (84), the fixing blocks (86) are inserted into the fixing grooves (85), positioning holes (87) are arranged on the fixing grooves (85), positioning bead spring plungers (88) are arranged on the fixing blocks (86), and the positioning bead spring plungers (88) are matched with the positioning holes (87).

9. The electric energy meter with the fire-retardant function according to claim 8, characterized in that, A sealing ring is arranged between the tank body (83) and the cover (84).

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