Contact device, detection method and storage medium thereof

Abstract

This application relates to the field of bridge-type contacts, and more particularly to a contact device, a detection method, and a storage medium thereof. The device comprises a bracket and a plurality of contact pieces rotatably mounted on the bracket and arranged in groups. Bosses are provided between adjacent contact pieces in the same group, and the bosses spread the adjacent contact pieces apart to form a heat dissipation gap. This application improves heat dissipation performance.

Description

Technical Field

[0001] The present application relates to the field of bridge-type contacts, and in particular to a contact device, a detection method, and a storage medium thereof. Background Art

[0002] Bridge contacts (hereafter referred to as bridges) are a crucial component of universal circuit breakers, and their stability is crucial for ensuring reliable and safe operation. Current bridges consist of two contact pieces. When the busbar is inserted into the bridge and energized, the contact pieces mate with each other. Furthermore, because the bridge is located inside the circuit breaker, its poor flow properties result in poor heat dissipation, hindering heat dissipation. Summary of the Invention

[0003] In order to improve the problem of poor heat dissipation of the contact bridge, the present application provides a contact device, a detection method and a storage medium thereof.

[0004] The present application provides a contact device, which adopts the following technical solution:

[0005] A contact device comprises a bracket and a plurality of contact pieces rotatably arranged on the bracket and divided into a plurality of groups. Bosses are arranged between adjacent contact pieces in the same group, and the bosses spread the adjacent contact pieces apart to form heat dissipation gaps.

[0006] By adopting the above technical solution, the contact area between the contact piece and the air is greatly increased through the heat dissipation gap, so that the temperature of the contact piece can be more easily discharged through the heat dissipation gap. The spatial spacing of the heat dissipation gap is fixed by the boss, which reduces the probability of the contact piece displacement changing the spacing of the heat dissipation gap, ensures the regularity of the heat dissipation gap, and greatly improves the heat dissipation performance.

[0007] Optionally, the number of the bosses is at least three, and the bosses are distributed along connecting lines to form a polygon.

[0008] By adopting the above technical solution, the bosses are distributed in a polygonal manner, so that the contact between the bosses and the contact piece is more stable, and the probability of the contact piece shaking caused by multiple bosses being distributed on the same straight line is reduced.

[0009] Optionally, a busbar is included, the contact piece is used to clamp and energize the busbar, and a plurality of heat dissipation holes are formed through the bracket, and the heat dissipation holes face the busbar.

[0010] By adopting the above technical solution, the heat of the clamped busbar is dissipated through the heat dissipation gap, which reduces the probability that the heat of the busbar can only be transferred to the contact sheet and then dissipated through the contact sheet due to the contact sheet being close to the busbar. The step of first transferring the heat to the contact sheet and then transferring it out is reduced, and the heat is directly transferred out through the heat dissipation gap, which increases the contact area between the busbar and the air, greatly improving the heat dissipation efficiency of the busbar. At the same time, it also reduces the probability of two heat accumulations in the contact sheet due to the heat generated by the contact sheet itself and the heat transferred from the busbar to the contact sheet, resulting in excessive temperature. Heat dissipation holes are also opened on the bracket facing the busbar, which further increases the contact area between the busbar and the air, so that the heat at the high-heating position on the busbar can be dissipated through the heat dissipation holes, further improving the heat dissipation efficiency of the busbar.

[0011] Optionally, connecting columns are provided between adjacent contact pieces in the same group, and elastic members are provided on the connecting columns. The elastic members pass through the heat dissipation gap and are connected to the connecting columns of the two groups of contact pieces to pull the contact pieces toward the direction of clamping the busbar.

[0012] By adopting the above technical solution, the elastic member passes through between the contact pieces and is connected to the connecting column, which is more stable and reduces the probability of deformation caused by the elastic force of the elastic member causing the contact piece to be skewed or unevenly stressed, thereby improving stability. At the same time, the contact piece clamps the busbar, thereby improving the stability of the connection between the busbar and the contact bridge.

[0013] Optionally, a first arcuate surface is formed on the busbar, and a second arcuate surface is formed on the side wall of the contact piece for clamping and contacting the busbar, and the first arcuate surface and the second arcuate surface are adapted to fit together.

[0014] By adopting the above technical solution, the contact between the busbar and the contact piece is made more comprehensive by combining the arc surface of the first arc surface and the second arc surface, and the probability that the contact surface between the busbar and the contact piece will change directly from a straight surface to a point contact when the busbar has a certain inclination angle is reduced. Even if the busbar has a certain inclination, the arc surface contact method can be automatically adapted, so that the busbar and the contact piece can still be in close contact, reducing the influence of the busbar inclination angle on the contact area, thereby reducing the point contact method and greatly reducing the contact area, thereby causing a sudden decrease in the conductive cross-sectional area, increasing the internal resistance, and increasing the probability of heat generation, thereby ensuring that the speed of heat generation is not too high.

[0015] Optionally, a heat dissipation groove is provided on the first curved surface, and both ends of the heat dissipation groove extend through the first curved surface toward the heat dissipation hole, and an opening surface of the heat dissipation groove contacts the second curved surface.

[0016] By adopting the above technical solution, the contact area between the busbar and the air is increased through the heat dissipation groove, so that the busbar has a larger heat dissipation area, and the heat emitted from the heat dissipation groove is directly dissipated toward the heat dissipation hole, so that the heat is easier to discharge, thereby improving the heat dissipation efficiency. At the same time, even if the first curved surface and the second curved surface are in contact with each other for conductivity, the heat can still be discharged through the heat dissipation groove, reducing the probability that the heat is difficult to discharge due to the better contact between the first curved surface and the second curved surface, and ensuring heat dissipation while ensuring the conductive area.

[0017] Optionally, a heat dissipation groove is provided on a side wall of the busbar facing the heat dissipation hole, both ends of the heat dissipation groove in an extending direction point to the heat dissipation hole, and the heat dissipation groove opens toward the heat dissipation hole.

[0018] By adopting the above technical solution, the contact area between the busbar and the air is increased through the heat dissipation grooves, so that the busbar has a larger heat dissipation area, and the heat emitted from the heat dissipation grooves is directly dissipated toward the heat dissipation holes, making it easier to discharge the heat and improving the heat dissipation efficiency.

[0019] Optionally, the busbar includes a body for the contact pieces to clamp for power supply and a connecting piece provided on the body, the connecting piece is used to connect the device to the busbar, and a plurality of heat dissipation holes are provided on the connecting piece.

[0020] By adopting the above technical solution, the main body is connected to the equipment through the connecting piece, and the heat is dissipated through the heat dissipation holes, thereby reducing the probability of heat accumulation and difficulty in dissipation due to interference and adhesion with the side wall of the equipment, and improving the heat dissipation efficiency of the busbar.

[0021] This application provides a contact device detection method, which adopts the following technical solution:

[0022] A method for detecting a contact device, comprising:

[0023] Obtain busbar external temperature data, busbar contact temperature data, air temperature data, contact bridge gap temperature data, terminal heat dissipation hole temperature data, open heat dissipation hole temperature data, and flow rate data;

[0024] Determining gap heat by using the contact bridge gap temperature data and a preset gap space threshold;

[0025] Determine the terminal heat by using the terminal heat dissipation hole temperature data and a preset terminal space threshold;

[0026] Determine the opening heat by using the opening heat dissipation hole temperature data and a preset opening space threshold;

[0027] Determine theoretical heat dissipation efficiency data through the gap heat, the end heat, the opening heat, the gap space threshold, the end space threshold, the opening space threshold, the flow rate data, a preset device heat dissipation area, and a preset flow rate ratio threshold;

[0028] Determining theoretical contact temperature data through the busbar external temperature data, the air temperature data, the flow rate data, a preset air heat dissipation efficiency threshold, and the theoretical heat dissipation efficiency data;

[0029] Determine a temperature difference by using the theoretical contact temperature data and the busbar contact temperature data;

[0030] Determining a theoretical flow rate value through the busbar contact temperature data, the air temperature data, and a preset heat circulation threshold;

[0031] Determine a flow rate difference between the theoretical flow rate value and the flow rate data;

[0032] An alarm signal is determined by the flow rate difference, the temperature difference, a preset flow rate difference threshold, and a preset temperature difference threshold, and is output to a user.

[0033] By adopting the above technical solution, through automatic calculation, it is possible to automatically determine where the abnormal problem occurs, which makes it easier for users to carry out targeted repairs and reduces the time spent by users in finding the problem, which is convenient and quick.

[0034] This application provides a computer storage medium that uses the following technical solution:

[0035] A computer storage medium stores a computer program that can be loaded by a processor and executes a detection method for a contact device.

[0036] By adopting the above technical solution, the computer program is stored via a computer storage medium.

[0037] In summary, this application includes at least one of the following beneficial technical effects:

[0038] 1. Heat is easier to discharge, reducing the probability of contact piece displacement changing the spacing of the heat dissipation gap, ensuring the regularity of the heat dissipation gap, and greatly improving the heat dissipation performance.

[0039] 2. The heat from the high-heat-generating areas on the busbar can be dissipated through the heat dissipation gaps and heat dissipation holes, further improving the heat dissipation efficiency of the busbar.

[0040] 3. Automatically determine the abnormal problem, so that users can carry out targeted repairs, reduce the time spent by users in finding the problem, and be convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 This is a schematic diagram of the overall structure of a contact device in Example 1 of the present application.

[0042] Figure 2 It is a schematic diagram of the exploded structure that highlights the boss.

[0043] Figure 3 yes Figure 1 Schematic diagram of the enlarged structure at point A in the middle.

[0044] Figure 4 This is a flow chart of a detection method for a contact device in Example 2 of the present application.

[0045] Explanation of the accompanying reference numerals: 1. Contact piece; 11. Boss; 12. Heat dissipation gap; 13. Connecting column; 14. Elastic member; 15. Second curved surface; 2. Bracket; 21. Heat dissipation hole; 3. Busbar; 31. First curved surface; 32. Heat dissipation groove; 33. Heat dissipation slot; 34. Main body; 35. Connecting piece; 36. Heat dissipation through hole. DETAILED DESCRIPTION

[0046] The following is combined with Figure 1-4 This application is described in further detail.

[0047] Embodiment 1 of the present application discloses a contact device. Figure 1 and Figure 2 The contact device includes a busbar 3, a bracket 2, and a plurality of contact pieces 1 rotatably connected to the bracket 2 and divided into multiple groups. Every two adjacent contact pieces 1 form a group. The multiple groups of contact pieces 1 are divided into two rows. The contact pieces 1 in the two rows are respectively located on both sides of the length direction of the bracket 2. Among the two contact pieces 1 in a group, one contact piece 1 is fixedly connected with a boss 11, which abuts against the other contact piece 1 in the same group. The boss 11 stretches the adjacent contact pieces 1 to form a heat dissipation gap 12, that is, the bosses 11 between the two contact pieces 1 in the same group are all fixedly connected to the same contact piece 1. In other embodiments, the bosses 11 can also be directly fixed on the two contact pieces 1 in the same group. The bosses 11 are directly formed on the contact pieces 1 by stamping.

[0048] Reference Figure 2 The number of protrusions 11 on a contact piece 1 is at least three. In this embodiment, there are three protrusions 11. In other embodiments, the three protrusions 11 on the same contact piece 1 are arranged in a triangle along a connecting line, that is, each protrusion 11 serves as a vertex of the triangle. Two more protrusions 11 are fixedly connected to the side wall of the contact piece 1 facing away from the heat dissipation gap 12. These protrusions 11 abut against the gaskets between different groups of contact pieces 1.

[0049] Reference Figure 1The busbar 3 includes a main body 34 for the contact piece 1 to clamp and energize, and a connecting piece 35 fixedly connected to the main body 34 by bolts or other fixing means. The connecting piece 35 is used to be fixedly connected to the equipment by bolts or other fixing means so that the busbar 3 is fixedly connected to the equipment. A plurality of heat dissipation holes 36 are opened through the connecting piece 35.

[0050] Reference Figure 1 and Figure 2 The contact piece 1 is used to clamp the body 34 to resist electricity. The bracket 2 is provided with a plurality of heat dissipation holes 21, and the heat dissipation holes 21 face the body 34. In this embodiment, the bracket 2 is combined with the contact piece 1 to form an open box shape. The contact piece 1 is regarded as the side wall of the bracket 2 in the longitudinal direction. For ease of description, the opening of the bracket 2 is oriented upward, the direction opposite to the upward direction is downward, and the longer extension direction of the bracket 2 is the longitudinal direction. The contact piece 1 is rotatably connected to both sides of the bracket 2 in the longitudinal direction. A plurality of heat dissipation holes 21 are provided through the end side walls of the bracket 2 in the longitudinal direction. A plurality of heat dissipation holes 21 are also provided through the lower end surface of the bracket 2, and the number of heat dissipation holes 21 on the lower end surface of the bracket 2 exceeds the number of heat dissipation holes 21 on the end of the bracket 2 in the longitudinal direction.

[0051] Reference Figure 2 Connecting posts 13 are fixedly connected between adjacent contact pieces 1 in the same group. In this embodiment, connecting posts 13 are fixed to the exterior of the contact pieces 1 away from the bracket 2. In other embodiments, connecting posts 13 may also be fixed to other locations on the contact pieces 1. Connecting posts 13 are connected to elastic members 14. In this embodiment, elastic members 14 are tension springs. The rear end of elastic member 14 passes through the heat dissipation gap 12 and hooks onto the connecting posts 13. The other end of elastic member 14 passes through the width of the bracket 2 perpendicular to the length of the bracket 2, allowing the other end of elastic member 14 to pass through the rear end of the heat dissipation gap 12 of another group of contact pieces 1 and hook onto the corresponding connecting posts 13. The elastic member 14 expands and contracts along the width of the bracket 2 to pull the contact pieces 1 on both sides of the length of the bracket 2 toward each other, thereby clamping the body 34.

[0052] Reference Figure 1 and Figure 2 and Figure 3A first curved surface 31 is formed on both side walls of the lower end of the body 34. The length extension direction of the first curved surface 31 is parallel to the length direction of the bracket 2. A second curved surface 15 is formed on the side wall of the upper end of the contact piece 1 for clamping the contact body 34. The first curved surface 31 and the second curved surface 15 are adapted to fit together. In this embodiment, the first curved surface 31 is an arc-shaped groove. The arc direction of the first curved surface 31 is arc-shaped in the up and down directions. The second curved surface 15 is an arc-shaped protrusion adapted to the bottom wall of the arc-shaped groove of the first curved surface 31, that is, the second curved surface 15 is inserted into the first curved surface 31, and the second curved surface 15 is adapted to fit together with the bottom wall of the first curved surface 31. A heat dissipation groove 32 is provided on the first curved surface 31. The heat dissipation groove 32 is provided in the middle position of the first curved surface 31 in the vertical direction, and the opening extension direction of the heat dissipation groove 32 is parallel to the length extension direction of the first curved surface 31. The two ends of the heat dissipation groove 32 in the extension direction pass through the two ends of the length extension direction of the first curved surface 31, and the two ends of the heat dissipation groove 32 in the extension direction open toward the heat dissipation holes 21 provided on the side walls at both ends of the length direction of the bracket 2, and the opening surface of the heat dissipation groove 32 contacts the second curved surface 15.

[0053] Reference Figure 3 A heat dissipation groove 33 is provided on the lower end surface of the main body 34. The extension direction of the heat dissipation groove 33 is parallel to the extension direction of the first curved surface 31, and the openings at both ends of the extension direction of the heat dissipation groove 33 are also facing the heat dissipation holes 21 opened on the side walls at both ends of the length direction of the bracket 2. The lower end opening of the heat dissipation groove 33 faces the heat dissipation holes 21 on the bottom wall of the bracket 2.

[0054] The implementation principle of a contact device in an embodiment of the present application is: when the main body 34 is inserted into the bracket 2, under the elastic force of the elastic member 14, the contact piece 1 is pulled to rotate and fit on the main body 34. At this time, the first curved surface 31 fits with the second curved surface 15, and the main body 34 and the contact piece 1 are in contact with each other and the circuit is conductive. The heat generated by the conduction of the main body 34 is dissipated from the heat dissipation gap 12 and the heat dissipation hole 21, and the dissipated heat is dissipated to the outside of the device, that is, it is dissipated to the outside through the through holes or through grooves for heat dissipation opened on the upper wall of the device, thereby forming a heat circulation.

[0055] Example 2:

[0056] Different from the embodiment 1, the embodiment 2 of the present application discloses a detection method of a contact device. Figure 4 , the detection method of the contact device comprises the following steps:

[0057] S1. Obtain busbar external temperature data, busbar contact temperature data, air temperature data, contact bridge gap temperature data, terminal heat dissipation hole temperature data, open heat dissipation hole temperature data, and flow rate data;

[0058] S11, determining the gap heat according to the contact bridge gap temperature data and a preset gap space threshold;

[0059] S12, determining the terminal heat by using the terminal heat dissipation hole temperature data and a preset terminal space threshold;

[0060] S13, determining the opening heat according to the opening heat dissipation hole temperature data and a preset opening space threshold;

[0061] S14, determining theoretical heat dissipation efficiency data based on gap heat, end heat, opening heat, gap space threshold, end space threshold, opening space threshold, flow rate data, and a preset flow rate ratio threshold;

[0062] S15. Determine theoretical contact temperature data based on busbar external temperature data, air temperature data, flow rate data, a preset air heat dissipation efficiency threshold, and theoretical heat dissipation efficiency data;

[0063] S16. Determine the temperature difference based on the theoretical contact temperature data and the busbar contact temperature data;

[0064] S2. Determine the theoretical flow rate value through busbar contact temperature data, air temperature data, a preset heat circulation threshold, and a preset temperature difference threshold;

[0065] S21, determining a flow velocity difference between the theoretical flow velocity value and the flow velocity data;

[0066] S22. Determine an alarm signal based on the flow rate difference, the temperature difference, and a preset flow rate difference threshold, and output it to the user.

[0067] In detail: In this embodiment, the busbar external temperature data, busbar contact temperature data, air temperature data, contact bridge gap temperature data, end heat dissipation hole temperature data, and open heat dissipation hole temperature data can be measured by, for example, temperature sensors, etc. For example, by using a temperature sensor with a sensitive element, the temperature change is converted into an electrical signal through the sensitive element (such as a thermistor, etc.) to obtain temperature data. The busbar external temperature data is the temperature of the end of the detection body 34 away from the bracket 2, that is, the temperature of the end of the body 34 outside the device. The busbar contact temperature data is the temperature of the position where the body 34 is connected to the device, that is, the temperature of the position before the body 34 contacts the contact piece 1. The temperature of the connecting piece 35 can be collected. The air temperature data is the ambient temperature outside the device. The contact bridge gap temperature data is the temperature data collected in the heat dissipation gap 12. Here, the heat dissipation gap 12 includes the heat dissipation between the contact pieces 1 of the same group. The thermal gap 12 also includes the gap space between different groups of adjacent contact pieces 1. For the sake of convenience of description, they are all referred to as heat dissipation gaps 12. The end heat dissipation hole temperature data is the temperature data collected from the heat dissipation holes 21 on the side walls at both ends of the bracket 2 in the length direction, and the open heat dissipation hole temperature data is the temperature data collected from the heat dissipation holes 21 opened on the bottom wall of the bracket 2; the gap space threshold is the space size of the heat dissipation gap 12, the end space threshold is the total space size of the multiple heat dissipation holes 21 on the end of the bracket 2 in the length direction, and the open space threshold is the total space size of the multiple heat dissipation holes 21 on the bottom wall of the bracket 2. These three data can be directly obtained during production. Unless the bracket 2 and the contact piece 1 are deformed, the data will not change. The amount of heat energy contained in this space can be obtained by combining the collected temperature data with the space size. For example, the temperature data is 30° and the gap space threshold is 10cm 3 If the medium in the heat dissipation gap 12 is air, the specific heat capacity of air is 1.007 kJ / (kg*K) and the density is 1.205 kg / m 3 , then it can be calculated that the heat contained in the heat dissipation gap 12 at this time is the gap heat, and the gap heat is 10 / 100 3*1.205*1.007*30, the calculation method of the end heat and the opening heat is the same, or the relationship between heat and temperature can be calculated in advance, the calculation results can be formed into a table, and then the temperature data can be directly substituted into the table after detection, and the heat data can be obtained by looking up the table. At this time, this table is the gap space threshold, the end space threshold, and the opening space threshold; the flow rate ratio threshold is the flow rate ratio of the heat dissipation gap 12 and the heat dissipation holes 21 at different positions, that is, the position with smaller space or the place with narrower space will have a relatively faster flow rate. The heat dissipation area of the equipment is the opening area of the holes for heat dissipation opened on the equipment. The flow rate ratio threshold is set as the heat dissipation gap 12: the heat dissipation hole 21 at the end: the heat dissipation on the bottom wall Hole 21 = 3:2:1. If the collected flow rate data is 0.1m / s, and the unknown number x is set, the relationship can be used: gap space threshold * 1x + end space threshold * 2x + opening space threshold * 3x = equipment heat dissipation area * 0.1. The flow rate of the heat dissipation gap 12 is calculated to be 3x, the flow rate of the heat dissipation hole 21 at the end is 2x, and the flow rate of the heat dissipation hole 21 on the bottom wall is x. Then the theoretical heat dissipation efficiency data is calculated as gap heat * 3x + end heat * 2x + opening heat * 3x. The theoretical heat dissipation efficiency data is the efficiency of heat dissipation at this flow rate. The busbar external temperature data, air temperature data, flow rate data, and air heat dissipation efficiency threshold can be used to calculate the heat outside the equipment. The temperature of the busbar end after natural heat dissipation under the influence of this flow rate can be calculated to obtain the theoretical busbar end temperature data under the natural heat dissipation state, and combined with the heat emitted by the equipment, that is, combined with the theoretical heat dissipation efficiency data, the temperature data of the busbar end under the influence of the heat emitted by the equipment under the natural heat dissipation state can be obtained, that is, the position where the busbar contacts the equipment is most affected, that is, the theoretical theoretical contact temperature data is obtained, and then the theoretical contact temperature data and the actual busbar contact temperature data collected are calculated to obtain the temperature difference. This temperature difference can represent the difference between theory and practice, and this difference is used as an error, which is affected by, for example, the actual heat dissipation gap 12 and the heat dissipation hole caused by dust accumulation on the equipment. The spatial change of 21 causes the actual flow rate ratio to differ from the flow rate ratio threshold, resulting in a deviation between the theoretical calculation and the actual situation. The temperature difference is calculated by collecting the busbar contact temperature data and the air temperature data of the ambient temperature outside the equipment. Then, by substituting this temperature difference into the heat circulation threshold, the theoretical flow rate value can be obtained by looking up the table. For example, if the busbar contact temperature data is 40°, it means that the temperature of bracket 2 where the busbar is inserted into the equipment is 40°, and then the equipment is dissipating heat. However, the external temperature is 30°, resulting in a temperature difference of 10°. Assuming the heat circulation threshold is (10°, 0.01m / s), it means that under ideal conditions, the heat dissipation in the equipment will generate 0.01m / s flow rate, which is the theoretical flow rate value, is obtained by calculating the theoretical flow rate value and the flow rate data actually collected to calculate the flow rate difference. By comparing the flow rate difference with the flow rate difference threshold, it can be determined whether the flow rate is in an ideal state. By comparing the temperature difference with the temperature difference threshold, it can be determined whether the heat dissipation efficiency is in an ideal state. If the temperature difference is too large, it means that there is a decrease in heat dissipation performance due to, for example, dust accumulation, or there may be deformation of the contact piece or damage to other conductive parts in the equipment, resulting in a smaller contact area with the body 34. When the current remains unchanged, the contact area becomes smaller. The reduction in the conductor's cross-sectional area is equivalent to an increase in the equivalent internal resistance, which increases the heat generated by the conduction. If the flow velocity difference is too large, it indicates that dust accumulation, for example, is affecting gas flow. Combined with the temperature difference, if the flow velocity difference and the temperature difference are similar, the excessive temperature difference is caused by the excessive flow velocity difference, and an alarm signal indicating dust accumulation in the heat dissipation gap 12 and heat dissipation hole 21 is output to the user. If the degree of excessive flow velocity difference is less than the degree of excessive temperature difference, or if the flow velocity difference is not excessive but the temperature difference is excessive, it indicates that the excessive temperature difference is caused by deformation of the contact piece or damage to the conductive part, and a corresponding alarm signal is output to the user. Step S11 and step S2 are performed simultaneously, that is, they run in parallel.

[0068] The embodiment of the present application discloses a computer storage medium. Figure 1 The computer storage medium stores a computer program that can be loaded by the processor and execute the detection method of the contact device.

[0069] A processor can include a central processing unit (CPU) or MPU, or a host system built around a CPU or MPU, including both hardware and software. Once a meter is equipped with a processor, people can freely control the metering instrument through programming, making it operate as desired. The processor can control local measurement transmission, remote measurement transmission, and remote communication through internal protocols. Internal protocols broadly refer to all protocols that enable intercommunication or links within the same metering instrument or system, including some or all of the following: human-computer interaction protocols, software / hardware (interface) protocols, chip bus (C-Bus) protocols, and internal bus (I-Bus) protocols. With the advancement of integrated circuit technology, some protocols that were considered external bus (E-Bus) protocols have also become internal protocols after the external bus (E-Bus) has been integrated into the chip.

[0070] Computer-readable storage media include, for example, various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0071] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A contact device, characterized in that: It comprises a bracket (2) and a plurality of contact pieces (1) rotatably arranged on the bracket (2) and divided into a plurality of groups, wherein bosses (11) are provided between adjacent contact pieces (1) in the same group, and the bosses (11) spread the adjacent contact pieces (1) apart to form heat dissipation gaps (12); The busbar (3) is comprised of a contact piece (1) for clamping and energizing the busbar (3); a plurality of heat dissipation holes (21) are provided through the bracket (2), and the heat dissipation holes (21) face the busbar (3); the longer extension direction of the bracket (2) is the longitudinal direction, and the plurality of heat dissipation holes (21) are provided through the end side wall of the bracket (2) in the longitudinal direction; A first arcuate surface (31) is formed on the busbar (3), and a second arcuate surface (15) is formed on the side wall of the contact piece (1) for clamping and contacting the busbar (3), wherein the first arcuate surface (31) and the second arcuate surface (15) are adapted to fit together; A heat dissipation groove (32) is provided on the first curved surface (31), and both ends of the heat dissipation groove (32) extend through the first curved surface (31) toward the heat dissipation hole (21), and the opening surface of the heat dissipation groove (32) contacts the second curved surface (15); A heat dissipation groove (33) is provided on the side wall of the busbar (3) facing the heat dissipation hole (21), with both ends of the heat dissipation groove (33) extending in a direction pointing toward the heat dissipation hole (21), and the heat dissipation groove (33) opening facing the heat dissipation hole (21).

2. A contact device according to claim 1, characterized in that: The number of the bosses (11) is at least three, and the plurality of bosses (11) are distributed along a connecting line to form a polygon.

3. A contact device according to claim 1, characterized in that: A connecting column (13) is provided between adjacent contact pieces (1) of the same group, and an elastic member (14) is provided on the connecting column (13). The elastic member (14) passes through the heat dissipation gap (12) and is connected to the connecting columns (13) of the two groups of contact pieces (1) to pull the contact pieces (1) toward the direction of clamping the busbar (3).

4. A contact device according to claim 1, characterized in that: The busbar (3) comprises a body (34) for the contact piece (1) to clamp and energize, and a connecting piece (35) provided on the body (34), wherein the connecting piece (35) is used to connect a device to the busbar (3), and a plurality of heat dissipation holes (36) are provided on the connecting piece (35).

5. A method for detecting a contact device, according to the contact device of claim 4, characterized in that: include: Obtain busbar external temperature data, busbar contact temperature data, air temperature data, contact bridge gap temperature data, terminal heat dissipation hole temperature data, open heat dissipation hole temperature data, and flow rate data; Determining gap heat by using the contact bridge gap temperature data and a preset gap space threshold; Determining the terminal heat by using the terminal heat dissipation hole temperature data and a preset terminal space threshold; Determine the opening heat by using the opening heat dissipation hole temperature data and a preset opening space threshold; Determine theoretical heat dissipation efficiency data through the gap heat, the end heat, the opening heat, the gap space threshold, the end space threshold, the opening space threshold, the flow rate data, a preset device heat dissipation area, and a preset flow rate ratio threshold; Determining theoretical contact temperature data through the busbar external temperature data, the air temperature data, the flow rate data, a preset air heat dissipation efficiency threshold, and the theoretical heat dissipation efficiency data; Determine a temperature difference by using the theoretical contact temperature data and the busbar contact temperature data; Determining a theoretical flow rate value through the busbar contact temperature data, the air temperature data, and a preset heat circulation threshold; Determine a flow rate difference between the theoretical flow rate value and the flow rate data; An alarm signal is determined by the flow rate difference, the temperature difference, a preset flow rate difference threshold, and a preset temperature difference threshold, and is output to a user.

6. A computer storage medium, characterized in that A computer program is stored which can be loaded by a processor and executes the method for detecting a contact device according to claim 5 .

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