Relay and ammeter thereof

Abstract

The invention relates to the technical field of electricity meters, and particularly discloses a relay and an electricity meter thereof, comprising a mounting plate: a clamping frame is fixedly mounted on the front surface of the mounting plate, sliding grooves are formed in the upper and lower ends of the clamping frame, sliding plates are slidably connected to the inner sides of the sliding grooves, and heat dissipation fins of a heat conduction aluminum plate are attached to electronic components in the electricity meter. The n-pentane heat-conducting medium in the liquid storage box is heated and vaporized, the heat is absorbed, the heat dissipation capability is improved, the heat pushes the air cylinder to open the heat dissipation window, the air velocity in the electric meter is improved, the heat dissipation is enhanced, the temperature is continuously increased, and the heat-conducting medium is further vaporized, so that the inner current-conducting plate and the outer current-conducting plate are attached; and after the temperature is reduced, the heat-conducting medium is condensed, the air cylinder shrinks to block the heat dissipation window, the heat dissipation fan does not need to be automatically triggered by a temperature sensor, the consumption is reduced, the stability is improved, the cost is reduced, and the protection and moisture-proof performance is improved by the blocking window when the heat dissipation device is not used.

Description

Technical Field

[0001] The invention relates to the technical field of electric meters, in particular to a relay and an electric meter thereof. Background Art

[0002] An electric meter is an instrument used to measure electric energy consumption. From the working principle, it is mainly divided into induction meters and electronic meters. The induction meter uses the principle of electromagnetic induction. When current and voltage pass through the coil of the meter, a magnetic field is generated, which drives the aluminum disk to rotate. The rotation speed of the aluminum disk is proportional to the electric energy consumption. By calculating the number of revolutions of the aluminum disk, the amount of electric energy used can be measured. The electronic meter samples the voltage and current, and then uses electronic components (such as chips) to process and calculate the sampled signals to display the electric energy data. In terms of usage, electric meters are widely used in households, businesses, industries and other fields. In the home, the meter is installed near the distribution box to measure the electricity consumption of each household, so that users can clearly understand their electricity consumption, and the power company can also charge electricity fees based on the meter readings. In commercial places, such as shopping malls and office buildings, the meter can help managers count the electricity consumption of each area or tenant and reasonably allocate electricity costs. In industrial environments, the meter is crucial for monitoring the power consumption of large equipment and production lines, which helps enterprises to manage energy and control costs. At the same time, the accuracy of the meter is also very important. High-precision meters can measure electricity more accurately and avoid disputes and energy waste caused by measurement errors.

[0003] The Chinese patent with the announcement number "CN216144855U" discloses a new type of safety meter, which has a meter box body, and the meter box body includes an inner box, a temperature detection device, a temperature sensor, a detection circuit board, a cooling fan, a rotating shaft, a small motor and a cooling grille. When the temperature detection device detects that the temperature exceeds a preset value or the internal temperature is too high, the cooling fan and the cooling grille can be used to dissipate the internal heat to prevent the internal components from overheating and burning the internal machinery, thereby improving the overall service life;

[0004] The above-mentioned electric meter does show a certain convenience during actual use. However, in the specific use process, its heat dissipation structure has obvious shortcomings. Overall, the heat dissipation structure is relatively simple. During the heat dissipation process, it only relies on the heat dissipation fan for auxiliary heat dissipation, and there is only one ventilation window. This design makes the internal air circulation efficiency extremely low during the overall heat dissipation process. The heat dissipation efficiency is also relatively limited when only the fan is used for heat dissipation. It can be seen that the overall heat dissipation structure of the electric meter has significant defects and shortcomings. Due to poor heat dissipation effect, during use, the heat inside the electric meter is difficult to dissipate quickly, which makes the electric meter more prone to overheating and damage. In order to ensure the normal operation and service life of the electric meter and avoid equipment damage caused by overheating, it is urgent to improve the design of its heat dissipation structure. Summary of the invention

[0005] The object of the present invention is to provide a relay and an electric meter thereof, so as to solve the problem of low heat dissipation efficiency of the electric meter in the prior art mentioned in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides a relay, comprising a mounting plate: a card frame is fixedly installed on the front side of the mounting plate, and slide grooves are provided at the upper and lower ends of the card frame, and a slide plate is slidably connected to the inner side of the slide groove, and a relay body is fixedly installed between the inner sides of the slide plate, a wire is fixedly connected to one side of the relay body, and a plug is fixedly connected to the outer end of the wire, and a card installation mechanism is fixedly installed on the top of the card frame, and the bottom of the card installation mechanism and the slider located at the upper end are clamped with each other.

[0007] Furthermore, the clamping mechanism includes a vertical rail and a clamping hole, the vertical rail is fixedly installed on the top rear side of the clamping frame, the interior of the vertical rail is fixedly connected to a limit spring, the end of the limit spring is fixedly installed with a slider, the bottom of the slider is fixedly installed with a limit pin, the clamping hole is opened on the top rear side of the slider located at the top, and the bottom of the limit pin passes through the vertical rail and the clamping frame and is inserted into the inner side of the limit hole.

[0008] Furthermore, a push plate is fixedly mounted on the front of the sliding block, and internal fixing holes are opened at the four corners of the mounting plate, and the internal fixing holes are configured as countersunk holes.

[0009] An electric meter comprises an electric meter body, a front cover is hingedly connected to the front of the electric meter body, a mounting plate is mounted to the upper end of one side of the inner part of the electric meter body by bolts, a heat conduction mechanism is fixedly mounted on the inner rear side of the electric meter body, the front side of the heat conduction mechanism is connected to the electronic components inside the electric meter body, and ventilation mechanisms are fixedly mounted on both sides of the electric meter body.

[0010] Furthermore, a display screen is fixedly connected to the upper end of the front face of the front cover, and display lights are fixedly connected to the middle of the front face of the front cover at equal intervals.

[0011] Furthermore, the heat conduction mechanism includes a heat conduction aluminum plate, which is fixedly installed at the top and bottom of the electric meter body, a volute is fixedly installed on the front of the heat conduction aluminum plate, and a liquid storage box is fixedly connected to the lower end of the back of the heat conduction aluminum plate. A heat conduction medium is provided inside the liquid storage box, and the heat conduction medium is set to be a normal pentane solution. The boiling point of the heat conduction medium in the liquid storage box is 36.1°C. The volute is connected to the ventilation mechanism.

[0012] Furthermore, heat dissipation fins are fixedly installed at equal intervals on the front side of the heat-conducting aluminum plate, and the heat dissipation fins are fitted and connected to the electronic components in the electric meter.

[0013] Furthermore, the ventilation mechanism includes a cylinder and a heat dissipation window, the heat dissipation window is opened at the upper and lower ends of both sides of the meter body, the cylinder is fixedly connected to the top rear ends and the bottom rear ends of the meter body, the input end of the cylinder is connected to the volute, and the inner output end of the cylinder is fixedly connected with a sealing plate, and the sealing plate covers the inner side of the heat dissipation window.

[0014] Furthermore, an inner conductive seat is fixedly connected to the middle of one side of the meter body, and the inner conductive seat is electrically connected to the meter. An outer conductive seat is fixedly connected to the bottom of the sealing plate close to the inner conductive seat. The ventilation mechanism also includes an outer bracket, which is fixedly installed at the upper and lower ends of both sides of the meter body. A cooling fan is fixedly connected to the outer side of the outer bracket, and the cooling fan is electrically connected to the outer conductive seat.

[0015] Furthermore, fixing parts are fixedly installed on the top rear side and the bottom rear side of the meter body, and mounting holes are opened at the outer ends of the fixing parts. The mounting holes are set as countersunk holes, and the external corners of the meter body are set as arcs.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] Firstly, in the present invention, the card-mounting mechanism in the present invention brings great convenience to the use of the device. In actual use, the relay body is inserted into the inner side of the card frame, and the slide plate is also inserted therein. At this time, due to the reset characteristic of the limit spring, the slide block will be pushed to move downward. As the slide block moves downward, the limit pin will be inserted into the limit hole. Through the mutual limiting action of the limit pin and the limit hole, the relay body can be firmly card-mounted and installed, so that it is stably located inside the card frame. When the relay body needs to be removed, it is only necessary to adjust the push plate, which will drive the slide block to move upward. During the upward movement, the slide block will squeeze the limit spring to shrink it. When the limit spring shrinks, the slide block will drive the limit pin to be pulled out of the card hole. At this time, the relay body can be easily removed from the card frame. This design facilitates the disassembly and replacement of the relay body, and improves the practicality and maintainability of the device.

[0018] Secondly, in the present invention, the heat conduction mechanism plays an important role in heat dissipation in the device. The heat dissipation fins on the heat conduction aluminum plate can fit tightly with the electronic components inside the meter body. When the meter body is running, the temperature of the electronic components rises. At this time, the heat conduction aluminum plate and the heat dissipation fins begin to play a role, and perform efficient heat conduction and heat dissipation. As the temperature of the heat conduction aluminum plate and the heat dissipation fins rises, the high heat inside the meter body can be quickly discharged. The heat conduction medium in the liquid storage box will change when the temperature rises. The heat conduction medium of the n-pentane solution changes from liquid to gas. This process can absorb a large amount of heat and significantly improve the overall heat dissipation capacity. Moreover, the heat will drive the cylinder to run along with the gaseous n-pentane. The cylinder operation drives the blocking plate to move downward, opening the heat dissipation window, increasing the air flow rate inside the meter body, and greatly improving the heat dissipation efficiency.

[0019] Thirdly, in the present invention, when the temperature continues to rise, the heat-conducting medium will further evaporate and vaporize, prompting the sealing plate to continue to move. At this time, the inner conductive plate and the outer conductive plate are in contact with each other, and the power of the cooling fan is turned on. The cooling fan operates in coordination to further improve the heat dissipation efficiency. When the temperature drops, the vaporized heat-conducting medium condenses, and the cylinder automatically contracts to re-seal the heat dissipation window. The device can automatically trigger the heat dissipation fan to operate without a temperature sensor, which reduces the consumption of electronic components. At the same time, the absence of an additional sensor trigger improves the triggering stability and reduces the cost of use. The four heat dissipation windows can further improve the heat dissipation effect. When the meter body is not in use, the cylinder retracts to drive the sealing plate to seal the heat dissipation window, so that the meter has better protection performance and improved moisture-proof performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a side view structural schematic diagram of the present invention;

[0022] Figure 3 It is a rear view structure schematic diagram of the present invention;

[0023] Figure 4 It is a schematic diagram of the internal structure of the electric meter body in the present invention;

[0024] Figure 5 It is a schematic diagram of the structure of the heat conduction mechanism and the ventilation mechanism in the electric meter body of the present invention;

[0025] Figure 6 It is a front structural schematic diagram of the heat conduction mechanism in the present invention;

[0026] Figure 7 It is a rear view structural schematic diagram of the heat conduction mechanism in the present invention;

[0027] Figure 8 This is a front view structural diagram of the relay body in the present invention;

[0028] Fig. 9 It is a schematic diagram of the structure of the relay body in the disassembled state in the present invention.

[0029] In the figure: 1. mounting plate; 2. card frame; 3. slide groove; 4. slide plate; 5. relay body; 6. wire; 7. plug; 8. card installation mechanism; 81. vertical rail; 82. card hole; 83. limit spring; 84. slide block; 85. limit pin; 86. push plate; 9. mounting hole; 10. inner fixing hole; 11. meter body; 12. display light; 13. heat conduction mechanism; 131. heat conduction aluminum plate; 132. volute; 133. liquid storage box; 134. heat dissipation fin; 14. front cover; 15. display screen; 16. ventilation mechanism; 161. cylinder; 162. heat dissipation window; 163. sealing plate; 164. inner conductive seat; 165. outer conductive seat; 166. outer bracket; 167. heat dissipation fan; 17. fixing parts. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figure 8-Figure 9In an embodiment of the present invention, a relay and an electric meter thereof include a mounting plate 1, a card frame 2 is fixedly mounted on the front of the mounting plate 1, a slide groove 3 is provided at both upper and lower ends of the card frame 2, a slide plate 4 is slidably connected to the inner side of the slide groove 3, a relay body 5 is fixedly mounted between the inner sides of the slide plate 4, a wire 6 is fixedly connected to one side of the relay body 5, a plug 7 is fixedly connected to the outer end of the wire 6, a card mounting mechanism 8 is fixedly mounted on the top of the card frame 2, the bottom of the card mounting mechanism 8 and a slide block 84 located at the upper end are mutually engaged, the card frame 2 on the front of the mounting plate 1 is matched with the card mounting mechanism 8, and a stable installation position is provided for the relay body 5, the slide grooves 3 at the upper and lower ends of the card frame 2 cooperate with the slide plate 4, so that the installation and removal of the relay body 5 are more convenient, when the relay body 5 needs to be installed, it can be placed between the slide plates 4, and stable fixation is achieved by the engagement of the card mounting mechanism 8 with the slide block 84, this design facilitates the maintenance and replacement of the relay, and improves the convenience and reliability of the entire device, at the same time, the connection method of the wire 6 and the plug 7 makes the connection between the relay and the electric meter more flexible, and convenient for use in different scenarios.

[0032] See also Figure 8-Figure 9 The card-mounting mechanism 8 includes a vertical rail 81 and a card hole 82. The vertical rail 81 is fixedly installed on the top rear side of the card frame 2. The vertical rail 81 is fixedly connected to the inner side of the limit spring 83. The end of the limit spring 83 is fixedly installed with a slider 84. The bottom of the slider 84 is fixedly installed with a limit pin 85. The card hole 82 is opened on the top rear side of the slider 84 located at the top. The bottom of the limit pin 85 passes through the vertical rail 81 and the card frame 2 and is inserted into the inner side of the limit hole. The front of the slider 84 is fixedly installed with a push plate 86. The four corners of the mounting plate 1 are provided with internal fixing holes 10. The internal fixing holes 10 are set as countersunk holes. The vertical rail 81 is fixed on the card frame 2. The top rear side of the frame 2 provides stable support for the internal limit spring 83 and slider 84. The limit spring 83 can push the slider 84 so that the limit pin 85 at the bottom of the slider 84 is inserted into the card hole 82 and the limit hole located on the top rear side of the top slider 84, thereby realizing stable card-connected installation of the relay body 5. When disassembly is required, the slider 84 is driven to move by pushing the push plate 86 so that the limit pin 85 is disengaged from the limit hole. The operation is convenient. The internal fixing holes 10 in the form of countersunk holes at the four corners of the mounting plate 1 are convenient for firmly installing the entire device in a specific position, ensuring the stability and reliability of the device during use.

[0033] See also Figure 1-Figure 7, an electric meter comprises an electric meter body 11, a front cover 14 is hinged on the front of the electric meter body 11, a mounting plate 1 is installed on the upper end of one side of the inner part of the electric meter body 11 by bolts, a heat conduction mechanism 13 is fixedly installed on the inner rear side of the electric meter body 11, the front side of the heat conduction mechanism 13 is connected to the electronic components inside the electric meter body 11, ventilation mechanisms 16 are fixedly installed on both sides of the electric meter body 11, a display screen 15 is fixedly connected to the upper end of the front of the front cover 14, and display lights 12 are fixedly connected at equal intervals in the middle of the front of the front cover 14. The design of the front cover 14 hinged on the front of the electric meter body 11 is very user-friendly, which not only provides certain protection for the inside of the electric meter, but also facilitates the maintenance operation of the staff and the user to check the status of the electric meter. The mounting plate 1 is firmly installed on the upper end of one side of the inner part of the electric meter body 11 by bolts, which ensures the stability of the installation of related components and lays a foundation for the reliable operation of the electric meter. The heat conduction mechanism 13 on the inner rear side of the electric meter body 11 plays a role The key role is that it is closely connected with the internal electronic components and can timely and effectively export the heat generated by the electronic components during the working process, which greatly improves the stability and service life of the meter and avoids damage to electronic components or performance degradation due to heat accumulation. The ventilation mechanisms 16 on both sides of the meter body 11 are also indispensable. They can promote air circulation inside the meter, accelerate the dissipation of heat, and further enhance the heat dissipation effect of the meter. They cooperate with the heat conduction mechanism 13 to jointly maintain a suitable temperature environment inside the meter to ensure the normal operation of the meter. The display screen 15 on the upper front end of the front cover 14 can clearly display various power consumption data, such as power consumption, voltage, current and other information, which is convenient for users and power workers to understand the power consumption at any time, and the display lights 12 fixedly connected at equal intervals in the middle of the front can intuitively reflect the working status of the meter, such as normal operation, fault alarm, etc., providing timely prompts for users and maintenance personnel.

[0034] See also Figure 4-Figure 6The heat-conducting mechanism 13 includes a heat-conducting aluminum plate 131, which is fixedly installed at the top and bottom of the meter body 11. A volute 132 is fixedly installed on the front of the heat-conducting aluminum plate 131. A liquid storage box 133 is fixedly connected to the lower end of the back of the heat-conducting aluminum plate 131. A heat-conducting medium is provided inside the liquid storage box 133, and the heat-conducting medium is set to a normal pentane solution. The boiling point of the heat-conducting medium in the liquid storage box 133 is 36.1°C. The volute 132 is connected to the ventilation mechanism 16. Heat-dissipating fins 134 are fixedly installed at equal intervals on the front of the heat-conducting aluminum plate 131. The heat-dissipating fins 134 are fitted and connected to the electronic components in the meter. The heat-conducting aluminum plate 131 is fixedly installed at the top and bottom of the meter body 11, providing a stable structural foundation for the entire heat-conducting system. The front volute 132 is exquisitely designed. On the one hand, it increases the contact area with the air and improves the heat exchange efficiency. On the other hand, it is connected to the ventilation mechanism 16, and can better utilize the external air flow to dissipate heat. The n-pentane solution, the heat-conducting medium inside the liquid storage box 133, has unique advantages. Its boiling point is 36.1°C, which means that when the temperature inside the meter rises to a relatively low level, the n-pentane solution can be transformed from liquid to gas, thereby absorbing a large amount of heat. This characteristic enables the heat-conducting mechanism 13 to quickly start the heat dissipation mechanism when the temperature of the meter rises slightly, effectively preventing the temperature inside the meter from being too high. The heat dissipation fins 134 fixedly installed at equal intervals on the front of the heat-conducting aluminum plate 131 further enhance the heat conduction and heat dissipation effects. The heat dissipation fins 134 are fitted and connected to the electronic components in the meter, and can quickly conduct the heat generated by the electronic components to the heat-conducting aluminum plate 131 and the volute 132. The presence of the heat dissipation fins 134 increases the heat dissipation area, allowing the heat to be dissipated more efficiently, ensuring that the electronic components inside the meter always operate within a suitable temperature range, improving the stability and reliability of the meter, and extending the service life of the meter.

[0035] See also Figure 1-Figure 5The ventilation mechanism 16 includes a cylinder 161 and a heat dissipation window 162. The heat dissipation window 162 is opened at the upper and lower ends of both sides of the meter body 11. The cylinder 161 is fixedly connected to the top rear ends and the bottom rear ends of the meter body 11. The input end of the cylinder 161 is connected to the volute 132. The inner output end of the cylinder 161 is fixedly connected to a blocking plate 163. The blocking plate 163 covers the inner side of the heat dissipation window 162. An inner conductive seat 164 is fixedly connected to the middle of one side of the meter body 11. The inner conductive seat 164 is electrically connected to the meter. The bottom of the blocking plate 163 close to the inner conductive seat 164 is fixedly connected to an outer conductive seat 165. The ventilator The structure 16 also includes an external bracket 166, which is fixedly installed at the upper and lower ends of both sides of the meter body 11. A cooling fan 167 is fixedly connected to the outer side of the external bracket 166, and the cooling fan 167 is electrically connected to the external conductive seat 165. The top rear side and the bottom rear side of the meter body 11 are fixedly installed with a fixing member 17, and the outer end of the fixing member 17 is provided with a mounting hole 9, and the mounting hole 9 is set as a countersunk hole. The outer edges and corners of the meter body 11 are all set as arcs. The heat dissipation window 162 is opened at the upper and lower ends of both sides of the meter body 11 to provide a channel for heat dissipation. The cylinder 161 is fixed at the top and bottom rear ends of the meter body 11. The input end is connected with the volute 132, and the function of the heat conduction mechanism 13 is cleverly utilized. When the internal temperature of the electric meter rises, the gas generated by the change of the state of the heat-conducting medium in the volute 132 can enter the cylinder 161, and push the blocking plate 163 at the inner output end to move. The blocking plate 163 covers the inner side of the heat dissipation window 162, and the opening and closing of the heat dissipation window 162 can be automatically controlled according to the temperature. When the temperature rises to a certain level, the outer conductive seat 165 at the bottom of the blocking plate 163 near the inner conductive seat 164 contacts the inner conductive seat 164, and the power of the heat dissipation fan 167 is turned on. The outer bracket 166 is fixed to the upper and lower ends of both sides of the electric meter body 11 to dissipate heat. The fan 167 provides stable support. After the cooling fan 167 is started, the air circulation is further enhanced and the heat dissipation efficiency is improved. The fixings 17 on the top and bottom rear sides of the meter body 11 and the mounting holes 9 set as countersunk holes facilitate the installation and fixation of the meter and ensure the stability of the meter during use. The external edges and corners of the meter body 11 are set to be arc-shaped, which is not only more beautiful in appearance, but also can reduce the collision damage that may be caused by the edges and corners, thereby improving the safety of the meter. This ventilation mechanism 16 can automatically adjust the heat dissipation according to the internal temperature of the meter, without the need for additional sensor control, thereby reducing costs and improving the reliability and service life of the meter.

[0036] The working principle of the present invention is as follows: through the provided card installation mechanism 8, the relay body 5 can be inserted into the inner side of the card frame 2 during actual use of the device, and the slide plate 4 can also be smoothly inserted into the card frame 2. During use, due to the reset effect of the limit spring 83, the slider 84 can be pushed to move downward. After the slider 84 moves downward, the limit pin 85 can be driven to be inserted into the inner side of the limit hole. Through the mutual limiting effect of the limit pin 85 and the limit hole, the card installation of the relay body 5 can be assisted, so that the relay body 5 can be stably card-connected and installed on the inner side of the card frame 2. When the relay body 5 needs to be removed, the push plate 86 can be adjusted to drive the slider 84 to move upward. During the upward movement of the slider 84, the limit spring 83 can be squeezed to contract. When the limit spring 83 contracts, the slider 84 can drive the limit pin 85 to be pulled out from the inside of the card hole 82. At this time, the relay body 5 inside the card frame 2 can be easily removed, which greatly facilitates the disassembly and replacement of the relay body 5.

[0037] By setting the heat conduction mechanism 13, the device can be closely attached to the electronic components inside the meter body 11 through the heat dissipation fins 134 on the heat conduction aluminum plate 131 during use. When the meter body 11 is in operation, the temperature of the electronic components inside the meter rises, and then the heat conduction and heat dissipation can be efficiently carried out through the heat conduction aluminum plate 131 and the heat dissipation fins 134. At this time, the overall temperature of the heat conduction aluminum plate 131 and the heat dissipation fins 134 rises, and the high heat inside the meter body 11 can be quickly discharged. Since the heat conduction medium is stored in the liquid storage box 133, and the heat conduction medium is located in the volute tube 132, when the temperature of the heat-conducting aluminum plate 131 rises, the heat-conducting medium of the n-pentane solution will change from liquid to gaseous. In this process, it can absorb a large amount of heat, thereby significantly improving its overall heat dissipation capacity. In addition, in the heat dissipation process, the heat is driven by the gaseous n-pentane to drive the cylinder 161 to operate. The operation of the cylinder 161 can drive the blocking plate 163 to move downward. The blocking plate 163 moves downward to open the heat dissipation window 162. The evaporated gas can synchronously drive the four cylinders 161 to operate, thereby synchronously driving the four blocking plates 163 to synchronously open the heat dissipation window 162. The heat dissipation window 162 is After opening, it can help increase the air flow rate inside the meter body 11, which can greatly improve its overall heat dissipation efficiency. When the temperature continues to rise, as the heat-conducting medium further evaporates and vaporizes, it can prompt the blocking plate 163 to continue to move. At this time, the inner conductive plate and the outer conductive plate are in contact with each other. At this time, the power of the cooling fan 167 can be turned on. The operation of the cooling fan 167 can further improve its overall heat dissipation efficiency. When the temperature drops, the vaporized heat-conducting medium condenses. At this time, the cylinder 161 can automatically shrink, and the heat dissipation window 162 can be re-sealed. It can be seen that this device does not require a temperature sensor. The sensor can automatically trigger the cooling fan 167 to run, which can reduce the consumption of electronic components. At the same time, no additional sensor triggering is required, which can improve the triggering stability and reduce the cost of use. The four windows can further improve the heat dissipation effect. After the temperature drops, as the heat-conducting medium liquefies, the cylinder 161 retracts to drive the sealing plate 163 to seal the heat dissipation window 162, so that the electric meter can automatically close its heat dissipation window 162 when no heat dissipation is needed, so that it can have better protection performance. When the electric meter body 11 is not in use, it can be automatically sealed, which greatly improves its moisture-proof performance.

[0038] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0039] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A relay, characterized in that: The invention comprises a mounting plate (1): a card frame (2) is fixedly mounted on the front of the mounting plate (1); a slide groove (3) is provided at both the upper and lower ends of the card frame (2); a slide plate (4) is slidably connected to the inner side of the slide groove (3); a relay body (5) is fixedly mounted between the inner sides of the slide plate (4); a wire (6) is fixedly connected to one side of the relay body (5); a plug (7) is fixedly connected to the outer end of the wire (6); a card mounting mechanism (8) is fixedly mounted on the top of the card frame (2); the bottom of the card mounting mechanism (8) and a slider (84) located at the upper end are mutually engaged.

2. A relay according to claim 1, characterized in that: The clamping mechanism (8) comprises a vertical rail (81) and a clamping hole (82); the vertical rail (81) is fixedly mounted on the top rear side of the clamping frame (2); a limit spring (83) is fixedly connected inside the vertical rail (81); a slider (84) is fixedly mounted on the end of the limit spring (83); a limit pin (85) is fixedly mounted on the bottom of the slider (84); the clamping hole (82) is opened on the top rear side of the slider (84) located at the top; the bottom of the limit pin (85) passes through the vertical rail (81) and the clamping frame (2) and is inserted into the inner side of the limit hole.

3. A relay according to claim 1, characterized in that: A push plate (86) is fixedly mounted on the front of the sliding block (84), and internal fixing holes (10) are provided at the four corners of the mounting plate (1), wherein the internal fixing holes (10) are configured as countersunk holes.

4. An electric meter, using the relay according to any one of claims 1 to 3, characterized in that: The electric meter body (11) comprises an electric meter body (11), the front of which is hingedly connected to a front cover (14), the mounting plate (1) being mounted on an upper end of one side of the inside of the electric meter body (11) by means of bolts, a heat conducting mechanism (13) being fixedly mounted on the rear side of the inside of the electric meter body (11), the front side of the heat conducting mechanism (13) being connected to electronic components inside the electric meter body (11), and ventilation mechanisms (16) being fixedly mounted on both sides of the electric meter body (11).

5. An electric meter according to claim 4, characterized in that: A display screen (15) is fixedly connected to the upper end of the front face of the front cover (14), and display lights (12) are fixedly connected to the middle of the front face of the front cover (14) at equal intervals.

6. An electric meter according to claim 4, characterized in that: The heat-conducting mechanism (13) comprises a heat-conducting aluminum plate (131), the heat-conducting aluminum plate (131) is fixedly mounted on the top and bottom of the electric meter body (11), a volute (132) is fixedly mounted on the front of the heat-conducting aluminum plate (131), a liquid storage box (133) is fixedly connected to the lower end of the back of the heat-conducting aluminum plate (131), a heat-conducting medium is arranged inside the liquid storage box (133), and the heat-conducting medium is set as an n-pentane solution, the boiling point of the heat-conducting medium in the liquid storage box (133) is 36.1° C., and the volute (132) is connected to the ventilation mechanism (16).

7. An electric meter according to claim 6, characterized in that: Heat dissipation fins (134) are fixedly mounted at equal intervals on the front side of the heat-conducting aluminum plate (131), and the heat dissipation fins (134) are fitted and connected to electronic components in the electric meter.

8. An electric meter according to claim 6, characterized in that: The ventilation mechanism (16) comprises a cylinder (161) and a heat dissipation window (162). The heat dissipation window (162) is provided at both upper and lower ends of the two sides of the meter body (11). The cylinder (161) is fixedly connected to the top rear ends and the bottom rear ends of the meter body (11). The input end of the cylinder (161) is connected to the volute (132). The inner output end of the cylinder (161) is fixedly connected to a blocking plate (163). The blocking plate (163) covers the inner side of the heat dissipation window (162).

9. An electric meter according to claim 8, characterized in that: An inner conductive seat (164) is fixedly connected to the middle of one side of the electric meter body (11), and the inner conductive seat (164) is electrically connected to the electric meter. An outer conductive seat (165) is fixedly connected to the bottom of the sealing plate (163) close to the inner conductive seat (164). The ventilation mechanism (16) also includes an outer bracket (166), and the outer bracket (166) is fixedly installed at the upper and lower ends of both sides of the electric meter body (11). A heat dissipation fan (167) is fixedly connected to the outer side of the outer bracket (166), and the heat dissipation fan (167) is electrically connected to the outer conductive seat (165).

10. An electric meter according to claim 4, characterized in that: A fixing piece (17) is fixedly mounted on the top rear side and the bottom rear side of the electric meter body (11); a mounting hole (9) is provided at the outer end of the fixing piece (17); the mounting hole (9) is configured as a countersunk hole; and the outer corners of the electric meter body (11) are configured as arcs.

Images