Temperature sensor mounting base, temperature measuring device, tulip contact and system

Abstract

The invention discloses a mounting base of a temperature sensor. The mounting base comprises a mounting platform for mounting the temperature sensor and a fixing part for fixing the mounting base on an adjacent contact finger of a tulip contact, the fixing part is connected with the mounting platform through a connecting part, and the mounting platform is configured to be recessed in a space between the adjacent contact fingers when the mounting base is connected to the contact fingers. The invention further provides a temperature measuring device, a tulip contact and a system using the mounting base. The temperature sensor can be installed by effectively utilizing the space between the contact fingers of the tulip contact, it is ensured that the temperature sensor does not exceed the original outline of the tulip contact after being installed, and structural transformation of the tulip contact is not needed.

Description

Technical Field

[0001] The present invention relates to the technical field of power grid equipment, and particularly relates to a temperature sensor mounting base, a temperature measuring device using the mounting base, a plum blossom contact and a system. Background Art

[0002] The function of the plum blossom contact is to realize electrical connection between the moving and static contact arms of the switch cabinet circuit breaker and provide a current path. Usually, it is divided into different specifications according to the current carried, such as 630A (12 pieces) plum blossom contact, 1250A (30 pieces) plum blossom contact, 1600A (36 pieces) plum blossom contact, 2000A (48 pieces) plum blossom contact, 4000A (84 pieces) plum blossom contact, etc. During the operation of the switch cabinet, due to the large load current, the temperature often becomes too high, especially at the joint of the moving and static contacts. Due to the existence of contact resistance, the joint of the moving contact and the static contact, that is, the plum blossom contact often has the serious problems of overheating and being damaged or even burned. Therefore, the real-time temperature monitoring of the plum blossom contact has always been the focus of the temperature monitoring of the switch cabinet.

[0003] Currently, the existing plum blossom contacts with temperature measurement functions are essentially temperature sensors added to the plum blossom contacts. The technical principles adopted by these temperature sensors are generally wireless, such as CT power taking, RFID, surface acoustic wave, etc. The installation methods adopted by these temperature sensors are usually bundling or buckling. All of the existing plum blossom contacts with temperature measurement functions have a problem, that is, after installing the temperature sensor, the height of the temperature sensor will exceed the original maximum size of the plum blossom contact. The consequence of this approach is that the safety distance between the plum blossom contact and the insulating sheath is shortened, the original electric field distribution is disrupted, the insulation performance of the equipment is reduced, and huge safety hazards are brought to the switch cabinet.

[0004] The structural form of the existing plum blossom contact is that a certain number of contact fingers are clamped on the bracket by two springs to form a hollow cylinder. The plum blossom contact is usually installed on the moving contact arm and can be pushed in and out with the handcart. After the handcart is pushed to the working position, the static contact arm is inserted into the contact fingers of the plum blossom contact to form electrical connection with the moving contact arm and realize current transmission. In the overall structural composition of the plum blossom contact, the outermost layer is the spring for fastening, and the diameter of the spring is generally 4mm. That is to say, if a temperature sensor is installed on the outer edge of the plum blossom contact, in order not to reduce the original insulation performance after installing the temperature sensor, the maximum installation height of the temperature sensor cannot exceed 4mm. However, the bundling or buckling installation of the temperature sensor will cause the height of the temperature sensor to exceed the original maximum size of the plum blossom contact after installation, exceeding the diameter of the spring. Specifically as follows:

[0005] (1) CT-powered temperature sensor: The outer contour of the petal contact is circular, and the current flows through the surface of the contact fingers that make up the contact (skin effect). Therefore, for a temperature sensor using the CT-powered principle, it must be strapped outside the petal contact to form a power-taking ring. This method will inevitably cause the sensor after installation to exceed the original contour of the petal contact, resulting in a decline in insulation performance;

[0006] (2) Temperature sensors based on RFID or surface acoustic wave principles are usually square. When such a shaped temperature sensor is installed on the outer diameter of the petal contact, it will also inevitably cause the temperature sensor to exceed the original outer contour of the petal contact after installation, reducing the insulation performance of the switchgear. If the RFID or surface acoustic wave temperature sensor is made into an arc shape and sleeved on the outer diameter of the petal contact, this approach can reduce the height of the sensor after installation. However, the problems brought by this approach are that the antenna of the sensor is a special-shaped antenna, resulting in a significant increase in cost; the second problem is that the available space for this approach is only the 4-mm height of the fastening spring, and the space is too narrow, leading to a decline in the antenna performance of the sensor, insufficient stability of temperature data transmission, and a substantial increase in the false alarm rate, making the monitored temperature data untrustworthy. Therefore, this approach cannot be applied in practice.

[0007] In addition, in the above installation methods, the installation process of the temperature sensor is cumbersome, inconvenient to operate, and improper installation is likely to cause potential safety hazards. For example, for the strapped temperature sensor, it is strapped to the outer edge of the petal contact through a metal hoop. If it is strapped too tightly, the metal hoop is prone to fatigue failure under long-term stress and high temperature. If it is strapped too loosely, the contact with the petal contact is not tight, and there is a hidden danger of loosening and falling. For the inverted snap-on type, it is very difficult to completely match the depth of the card slot with the height of the contact finger. If the card slot is too shallow, it cannot be installed. If the card slot is too deep, the sensor and the contact finger are not in close contact, which may cause the sensor to become an isolated metal, resulting in partial discharge. Not only is the sensor easily damaged, but the partial discharge generated may also damage the petal contact.

[0008] In the prior art, there is another installation method: modifying the contact fingers of the petal contact, adding an installation base on the contact fingers, and installing the temperature sensor on the base so that the temperature sensor is located between the contacts. The space between the contacts can be utilized, and the temperature sensor will not exceed the original maximum size of the petal contact. However, this method requires changing the structure of the contact fingers. During the production process of the petal contact, a base is formed on one contact. Therefore, this method can only be applied to newly produced petal contacts and cannot be installed on-site. For petal contacts that have been put into use, this method cannot be used to install the temperature sensor. Summary of the Invention

[0009] In the existing plum blossom contact with a temperature measurement function, the temperature sensor is installed on the outer edge of the plum blossom contact, and the temperature sensor exceeds the original contour of the plum blossom contact, shortening the safety distance between the plum blossom contact and the insulating sheath and reducing the insulation performance of the equipment. The biggest reason for this result is that, in order not to shorten the insulation distance between the plum blossom contact and the insulating sheath, the available height on the outer edge of the plum blossom contact is only the size of the spring diameter, but the size of the existing temperature sensor far exceeds this size, so other spaces of the plum blossom contact need to be utilized. In addition, it is best not to modify the existing structure of the plum blossom contact.

[0010] To solve this problem, the present invention proposes an installation base for a temperature sensor, which includes an installation platform for installing the temperature sensor and a fixing portion for fixing the installation base on adjacent fingers of the plum blossom contact; the fixing portion is connected to the installation platform through a connecting portion, and the installation platform is configured such that when the installation base is connected to the finger, the installation platform is concave in the space between the adjacent fingers.

[0011] Further, the fixing portion includes a first wing portion and a second wing portion. The first wing portion and the second wing portion are located on both sides of the installation platform along the length direction. The first wing portion and the second wing portion extend away from the installation platform along the height direction of the installation platform, and the first wing portion and the second wing portion are oppositely arranged.

[0012] Further, the first wing portion and the second wing portion are configured to be respectively clamped on two opposite side surfaces of the adjacent fingers.

[0013] Further, the first wing portion and the second wing portion are plate-shaped.

[0014] Further, the first wing portion and the second wing portion respectively fit the side surfaces of the adjacent fingers.

[0015] Further, a first connecting portion is provided between the first wing portion and the installation platform, and a second connecting portion is provided between the second wing portion and the installation platform. The first connecting portion is configured to fit the top of the finger, and the second connecting portion is configured to fit the top of the finger.

[0016] Further, engaging mechanisms are provided at the bottom ends of the first wing portion and the second wing portion. The engaging mechanisms include protruding portions that contact the bottom of the finger.

[0017] Further, the end of the protruding portion of the first wing portion extends away from the second wing portion, and the end of the protruding portion of the second wing portion extends away from the first wing portion, such that the ends of the protruding portions are in an open state.

[0018] Further, the mounting base is made of a metal material.

[0019] The present invention also provides a mounting base for a temperature sensor, comprising:

[0020] A mounting platform for mounting the temperature sensor;

[0021] A first wing portion and a second wing portion located on both sides of the mounting platform along the length direction, and both the first wing portion and the second wing portion are connected to the mounting platform through connecting portions;

[0022] The mounting base is elastic, and in an initial state of the mounting base, the distance between the first wing portion and the second wing portion is smaller than the distance between two opposite side surfaces of adjacent fingers of the plum blossom contact, and the mounting base is configured such that the first wing portion and the second wing portion are clamped on the adjacent fingers, and the mounting platform is recessed in the space between the adjacent fingers.

[0023] Further, both the first wing portion and the second wing portion are plate-shaped.

[0024] Further, the first wing portion and the second wing portion are configured such that when the first wing portion and the second wing portion are clamped on the adjacent fingers, both the first wing portion and the second wing portion fit the corresponding side surfaces of the adjacent fingers.

[0025] Further, the connecting portion is plate-shaped and is configured to fit the top of the finger when the first wing portion and the second wing portion are clamped on the adjacent fingers.

[0026] Further, engaging mechanisms are provided at the bottom ends of both the first wing portion and the second wing portion, and the engaging mechanism includes a protruding portion that contacts the bottom of the finger.

[0027] Further, the end of the protruding portion of the first wing portion extends in a direction away from the second wing portion, and the end of the protruding portion of the second wing portion extends in a direction away from the first wing portion, so that the ends of the protruding portions are in an open state.

[0028] The present invention also provides a temperature measuring device for being mounted on a plum blossom contact, comprising the mounting base and the temperature sensor as described above, and the temperature sensor is fixed on the mounting platform of the mounting base.

[0029] Further, the temperature measuring device further includes an outer cover, and the outer cover covers the temperature sensor.

[0030] Further, the temperature sensor includes a sensor antenna and a sensor chip, and the sensor chip is disposed on the sensor antenna.

[0031] The present invention also provides a plum blossom contact, which includes a bracket, a spring and a plurality of finger contacts. The plurality of finger contacts are evenly arranged along the circumferential direction of the bracket, and the outer edge of each finger contact among the plurality of finger contacts forms the outer circumferential contour of the plum blossom contact; there is a gap between any one of the plurality of finger contacts and the adjacent finger contact; the spring is sleeved at both ends of the plurality of finger contacts; wherein, the plum blossom contact further includes the temperature measuring device as described above, and wherein the temperature measuring device is installed on any two adjacent contacts of the plurality of contacts; the top of the temperature sensor of the temperature measuring device is lower than the maximum outer circular contour of the plum blossom contact.

[0032] The present invention also provides a plum blossom contact system, which includes the plum blossom contact as described above.

[0033] The present invention has the following beneficial technical effects:

[0034] 1. By using the installation platform recessed between adjacent finger contacts, the installation of the sensor can be realized, making full use of the space on the side of the finger contacts, achieving the purpose that the sensor does not exceed the maximum outer circular contour of the plum blossom contact after installation, and using the wing portion of the base to fix the base on the finger contacts, so that it can be directly applied to the existing finger contacts that have been put into production and operation without changing the structure of the finger contacts, and has a wide application range.

[0035] 2. The installation base of the present invention can be directly inserted from the top of the finger contact and then clamped on the finger contact, and the installation is simple and fast.

[0036] The following will further illustrate the concept, specific structure and technical effects of the present invention in conjunction with the drawings, so as to fully understand the purpose, features and effects of the present invention. Description of the Drawings

[0037] Figure 1 is a schematic structural diagram of a conventional plum blossom contact in the prior art;

[0038] Figure 2 is a schematic structural diagram of the temperature sensor installation base of a preferred embodiment of the present invention;

[0039] Figure 3 is Figure 2 the schematic structural diagram of the installation base shown installed in the plum blossom contact;

[0040] Figure 4 is a schematic structural diagram of the temperature measuring device of a preferred embodiment of the present invention, wherein the chip of the temperature sensor is installed in the length direction of the antenna;

[0041] Figure 5The chip of the temperature sensor is shown to be installed in the width direction of the antenna;

[0042] Figure 6 The chip of the temperature sensor is shown to be installed in the height direction of the antenna;

[0043] Figure 7 It is a schematic structural diagram of a plum blossom contact with the temperature measuring device of the present invention installed.

[0044] Among them, 1 - finger, 2 - spring, 3 - bracket; 10 - temperature measuring device, 11 - first finger, 11a - first side of the first finger, 11b - second side of the first finger; 12 - second finger, 12a - first side of the second finger, 12b - second side of the second finger, 20 - plum blossom contact;

[0045] 100 - base, 101 - fixing part, 110 - installation platform, 120 - first wing part, 130 - second wing part, 140 - first connecting part, 141 - first fitting surface, 150 - second connecting part, 151 - second fitting surface, 160 - arc transition part, 170 - engaging mechanism, 171 - protruding part, 172 - end;

[0046] 200 - temperature sensor, 201 - sensor antenna, 202 - sensor chip;

[0047] 300 - outer cover. Detailed implementation manners

[0048] The following introduces multiple preferred embodiments of the present invention with reference to the accompanying drawings of the specification to make its technical content clearer and easier to understand. The present invention can be embodied in many different forms of embodiments, and the protection scope of the present invention is not limited to the embodiments mentioned in the text.

[0049] In the drawings, components with the same structure are denoted by the same numerical reference signs, and components with similar structures or functions everywhere are denoted by similar numerical reference signs. The size and thickness of each component shown in the drawings are arbitrarily shown, and the present invention does not limit the size and thickness of each component. In order to make the illustration clearer, the thickness of some parts in the drawings is appropriately exaggerated.

[0050] A plum blossom contact refers to an electrical connector contact with a plum blossom-shaped diameter, and its main function is electrical connection, especially for realizing the transmission of primary power in the power system. The plum blossom contact mainly consists of fingers, a fixed bracket, and a fixed spring. Figure 1The existing plum blossom contact is shown, including a plurality of finger contacts 1, springs 2, and a bracket 3. The main body of the bracket 3 is annular, and the plurality of finger contacts 1 are evenly distributed around the circumference of the bracket. The outer edge of the finger contact 1 forms the original contour of the plum blossom contact, which is generally cylindrical, and the outer edge of the finger contact 1 is on the outer circumferential surface of the cylinder. The number of finger contacts is determined by the magnitude of the load current, generally divided into 12 pieces (rated load 630A), 30 pieces (rated load 1250A), 36 pieces (rated load 1600A), 48 pieces (rated load 2000A), 84 pieces (rated load 4000A). Springs 2 are respectively arranged on the peripheries at both ends of the finger contact 1, so as to tightly hoop the finger contact 1 on the bracket 3. Figure 1 The shown plum blossom contact is a well-known structure. It should be understood that the plum blossom contact applicable to the present invention is not limited to Figure 1 the shown structure, and other well-known plum blossom contacts can all apply the technical solution of the present invention.

[0051] For the existing plum blossom contact with a temperature measurement function, the temperature sensor is installed on the outer circumference of the plum blossom contact, and the temperature sensor protrudes beyond the original contour of the plum blossom contact (i.e., protrudes radially outward from the outer circumference of the plum blossom contact), shortening the safety distance between the plum blossom contact and the insulating sheath and reducing the insulation performance of the equipment. The main reason for this result is that in order not to shorten the insulation distance between the plum blossom contact and the insulating sheath, the available height on the outer edge of the plum blossom contact is only the diameter of the spring. For example, when the diameter of the spring is 4mm, the available height on the outer edge of the plum blossom contact is only 4mm. However, the size of the existing temperature sensor far exceeds this size. The thickness of the conventional temperature sensor is 4mm or 5mm. Adding the outer shell and the fixed base, this height exceeds the maximum available height of 4mm on the outer edge of the plum blossom contact. To solve this problem, without additionally designing a matching temperature sensor, in order to use the existing conventional temperature sensor, it is necessary to find a way to utilize other spaces of the plum blossom contact.

[0052] Through the analysis of the structure of the plum blossom contact, the inventor found that the space between the finger contacts of the plum blossom contact can be used to install the temperature sensor. For example, referring to Figure 1 , for the plum blossom contact with a rated load power of 630A, the distance between adjacent two groups (a total of 12 pieces, with 2 pieces in each group) of finger contacts is 11mm, and the length of the finger gap is 20mm, while the length of the conventional temperature sensor is 13mm and the width is 9mm, which is sufficient to install the temperature sensor. This requires installing the temperature sensor downward. Here, downward means the direction from the outer surface of the circumferential contour of the plum blossom contact along its radial direction inward. That is to say, installing the temperature sensor in the gap between two finger contacts. Therefore, the present invention provides a temperature measurement device 10, as shown in Figure 4As shown, the temperature measuring device 10 includes a base 100 for installing a temperature sensor 200 and the temperature sensor 200 installed on the base 100. Among them, as Figure 2 shown, the base 100 includes an installation platform 110 and a fixing part 101. When the base 100 is installed on the plum blossom contact, it is connected to the finger 1 of the plum blossom contact through the fixing part 101, so as to fix the base 100 on the plum blossom contact. At the same time, the installation platform 110 is recessed in the gap between two adjacent groups of fingers. Then, the temperature sensor is installed on the installation platform 110. In this way, the space between the two groups of fingers can be fully utilized, so that the top of the temperature sensor does not exceed the original radial maximum dimension of the plum blossom contact (that is, does not exceed the original contour of the plum blossom contact), and there is no need to transform the finger structure of the plum blossom contact, and it can be directly installed on the plum blossom contact that has been put into operation.

[0053] The fingers of the plum blossom contact are generally evenly distributed along the circumferential direction of the plum blossom contact. The space between two adjacent groups of fingers is trapezoidal with a wider upper part and a narrower lower part along the radial direction. Therefore, when the installation platform 110 is recessed between two adjacent groups of fingers, the contour of the installation platform 110 matches the shape of the space between the fingers.

[0054] The sinking depth of the installation platform 110 (that is, the distance between the bottom of the installation platform 110 and the top of the finger) can be determined according to the size of the sensor to be installed. Generally, it is required that this depth be as deep as possible on the premise of ensuring the normal installation of the temperature sensor 200. The width of the bottom of the installation platform 110 should be slightly larger than the width of the temperature sensor 200 to ensure that the two sides of the installation platform 110 will not interfere with the temperature sensor 200 when the temperature sensor 200 is installed. Taking the maximum installation height of the plum blossom contact as 4 mm as an example, the distance between the top of the finger of the plum blossom contact and the maximum radial contour of the plum blossom contact is 4 mm (usually the height of the spring 2 of the plum blossom contact). The sinking depth of the installation platform 110 can be set to 2 mm. In this way, the maximum available installation height of the temperature sensor is 6 mm, an increase of 50%.

[0055] In some embodiments, the length direction of the installation platform 110 is parallel to the length direction of the finger 1 instead of being tangent. When the temperature sensor is installed on the installation platform 110, the width direction of the temperature sensor 200 is tangent to the outer edge (circular) of the plum blossom contact instead of the length direction. In this installation method, on the premise of ensuring that the temperature sensor 200 does not exceed the outer edge of the plum blossom contact after installation, the available height of the temperature sensor 200 is the highest.

[0056] The temperature sensor 200 is installed on the mounting platform 110 and can be installed in a known manner. For example, the temperature sensor 200 is adhered to the mounting platform 110 through conductive adhesive, or adhered through a thermal conductive gasket, or installed by indium foil crimping. In some embodiments, an outer cover 300 is provided outside the temperature sensor 200 to protect the temperature sensor 200. The outer cover 300 can be made of a non-metallic material with high stability, good insulation, and strong heat resistance, such as PPS. The outer cover can be processed into a square shape to match the size of the temperature sensor 200; or it can be encapsulated, with the temperature sensor 200 encapsulated in the colloid. If the encapsulation method is used, the material of the colloid selected needs to withstand the temperature for a long time and cover the temperature measurement range of the temperature sensor, usually -25°C to 125°C, or -40°C to 125°C; at the same time, the colloid needs to be insulated and flame-retardant.

[0057] The function of the fixing part 101 is to fix the base 100 on the plum blossom contact. The fixing part 101 can be connected to the finger 1 of the plum blossom contact, thus playing a fixing role.

[0058] In some embodiments, the fixing part 101 is clamped on two adjacent sets of fingers, similar to a clip. The fixing part 101 includes a first wing part 120 and a second wing part 130 respectively located on both sides of the mounting platform 110 along the length direction. The first wing part 120 and the second wing part 130 extend away from the mounting platform 110 along the height direction of the mounting platform 110, and generally extend along the radial direction of the plum blossom contact. Specifically, taking the first wing part 120 as an example, the extending direction of the first wing part 120 is from the top of the finger 1 towards the middle of the plum blossom contact, and the extending direction is generally the same as the radial direction of the plum blossom contact, that is, it can be parallel to the radial direction of the plum blossom contact, or form a small angle with the radial direction of the plum blossom contact. The first wing part 120 and the second wing part 130 are respectively located on the opposite sides of two adjacent sets of fingers. Specifically, the two adjacent sets of fingers are the first finger 11 and the second finger 12. The first side 11a of the first finger 11 faces the first side 12a of the second finger 12, and the second side 11b of the first finger 11 and the second side 12b of the second finger 12 are opposite. The first wing part 120 is located at the second side 11b of the first finger 11, and the second wing part 130 is located at the second side 12b of the second finger 12. The first wing part 120 and the second wing part 130 respectively apply clamping forces at the corresponding finger sides, clamping on the first finger 11 and the second finger 12 like a clip, thereby fixing the base 100 on the plum blossom contact, and the mounting platform 110 just falls into the space between the first finger 11 and the second finger 12.

[0059] The shapes of the first wing portion 120 and the second wing portion 130 may be plate-shaped. When the first wing portion 120 and the second wing portion 130 are clamped on the contact fingers, at least part of the first wing portion 120 and the second wing portion 130 is in contact with the side surface of the contact fingers to provide a clamping force application point. For example, the first wing portion 120 and the second wing portion 130 may be selected to be plate-shaped, and the bottom edge of the plate-shaped portion is in contact with the side surface of the contact fingers to form a force application point. Preferably, the plate-shaped portion may be arranged to be completely in contact with the side surface of the contact fingers. It should be understood that the first wing portion 120 and the second wing portion 130 may also be selected in other shapes. For example, the middle of the wing portion is hollowed out and the edge is a rod-shaped member.

[0060] There is a first connecting portion 140 between the first wing portion 120 and the mounting platform 110, and a second connecting portion 150 between the second wing portion 130 and the mounting platform 110. Through the first connecting portion 140 and the second connecting portion 150, the mounting platform 110, the first wing portion 120, and the second wing portion 130 are formed into a whole. When the base 100 is mounted on the plum blossom contact, the first connecting portion 140 is located at the top of the first contact finger 11, and the second connecting portion 150 is located at the top of the second contact finger 12. In some embodiments, the first connecting portion 140 and the second connecting portion 150 are selected to be plate-shaped. Preferably, after the base 100 is mounted in place, the first connecting portion 140 and the second connecting portion 150 are respectively in contact with the tops of their corresponding contact fingers. As shown in the figure, the side surface of the first connecting portion 140 facing the contact finger is the first contact surface 141, and the side surface of the second connecting portion 150 facing the contact finger is the second contact surface 151. After the base 100 is mounted in place, the first contact surface 141 is in contact with the top of the first contact finger 11, and the second contact surface 151 is in contact with the top of the second contact finger 12.

[0061] The base 100 formed by the first wing portion 120, the second wing portion 130, the first connecting portion 140, the second connecting portion 150, and the mounting platform 110 can be integrally formed. The integrally formed base 100 has elasticity, so that the first wing portion 120 and the second wing portion 130 can be clamped on the adjacent first contact finger 11 and second contact finger 12. For example, the distance between the first wing portion 120 and the second wing portion 130 is slightly smaller than the distance between the second side surface 11b of the first contact finger 11 and the second side surface 12b of the second contact finger 12, and the first wing portion 120 and the second wing portion 130 achieve clamping through interference fit with the contact fingers. In some embodiments, the width of the first connecting portion 140 is greater than the width of the first contact finger 11. An arc transition portion 160 is provided between the first connecting portion 140 and the first wing portion 120. The arc transition portion 160 extends from the outer edge of the first connecting portion 140 towards the second side surface 11b of the first contact finger 11, and then connects to the first wing portion 120; the second connecting portion 150 and the second wing portion 130 also adopt the same structure.

[0062] In some embodiments, a latching mechanism 170 is provided at the bottom of the first wing portion 120 and the second wing portion 130. The latching mechanism 170 can latch onto the bottom of the finger, thereby strengthening the base 100. Preferably, the latching mechanism 170 can be set in an S shape. Taking the first wing portion 120 as an example, a protrusion 171 extends from the bottom edge of the first wing portion 120 towards the second wing portion 130. The protrusion 171 can latch onto the bottom of the finger, and then the protrusion 171 continues to extend away from the second wing portion 130, thus forming an S shape. The second wing portion 130 also adopts the same structure. For the two S-shaped latching mechanisms 170, the distance between the protrusions 171 is less than the minimum distance between the first wing portion 120 and the second wing portion 130, which can effectively latch onto the bottom of the finger and ensure that the base 100 will not fall off the finger after being installed, eliminating the hidden danger of insecure installation. The ends 172 of the two latching mechanisms 170 open outwards, facilitating direct downward insertion during installation without the need for other tools. It should be understood that the latching mechanism 170 can also adopt other structures. For example, the latching mechanism 170 can be set in a hook shape.

[0063] In the embodiments described above, the base 100 is similar to a clip, clamped between two adjacent fingers 11 and 12, so that the base 100 is fixed on the plum blossom contact, and the installation platform 110 in the middle just sinks into the space between the two fingers. During use, only need to align the opening of the latching mechanism 170 at the bottom of the base 100 with the finger and insert it directly to the bottom, without the need for other tools or screw fixation, and the installation is convenient and fast. In addition, without changing the finger structure of the plum blossom contact, it can be installed on the existing plum blossom contact, facilitating the installation of the temperature sensor on the existing plum blossom contact. After the base 100 is installed in place, the first wing portion 120 and the second wing portion 130 on both sides are respectively in close contact with the corresponding fingers, and the entire base 100 is clamped on the fingers by the elasticity of the base 100. At the same time, the middle part of the latching mechanism 170 at the bottom of the wing portion protrudes inwards to latch onto the bottom of the finger for reinforcement, ensuring that the base 100 is firm and reliable after being installed and will not fall off the finger even under extreme conditions.

[0064] It should be understood that setting the fixing portion 101 as a structure similar to a clip and clamping it on the finger is a preferred embodiment of the present invention. The base 100 can also be fixed in other ways, as long as it is ensured that the installation platform 110 is located between two adjacent fingers, the purpose of the present invention can also be achieved.

[0065] The base 100 can be made of a metal material, preferably silver-plated copper.

[0066] The base 100 can be manufactured by an integral molding process.

[0067] The temperature sensor is preferably a sensor that transmits data wirelessly, including a sensor antenna 201 and a sensor chip 202. The chip 202 is connected to the sensor antenna 201. As Figure 4 , Figure 5 and Figure 6 shown, the chip 202 can be located in any direction of the length, width, or height of the sensor antenna 201, and the welding position depends on the design form of the antenna 201. The sensor antenna 201 can be a printed wire antenna, and the antenna substrate is selected from a plate with a high dielectric constant and low loss, preferably a ceramic substrate. The sensor antenna 201 can communicate with an external control device through wireless communication. The sensor antenna 201 can be located on the top or bottom surface of the temperature sensor. The bottom surface refers to the surface where the temperature sensor contacts the base 100, and the top surface is the surface opposite to the bottom surface. The temperature sensor can be selected from existing sensors in the prior art without additional design, thereby reducing the cost of the plum blossom contact.

[0068] The present invention also provides a plum blossom contact 100 using the above temperature measuring device. The plum blossom contact 100 includes a plurality of contact fingers 1, and the plurality of contact fingers 1 are evenly arranged along the circumference of the plum blossom contact. A gap 101 is formed between adjacent contact fingers 1. The temperature measuring device 10 is installed on two adjacent contact fingers of the plum blossom contact 20, so that the temperature sensor is located in the space between the two contact fingers. The height of the temperature measuring device 10 does not exceed the original outer contour of the plum blossom contact, and thus does not affect the safety distance between the plum blossom contact and the insulating sheath, does not reduce the insulation performance of the equipment, and at the same time realizes the on-line temperature monitoring of the plum blossom contact. At the same time, for existing plum blossom contacts, no modification is required and they can be applied.

[0069] The present invention also provides a plum blossom contact system including the above plum blossom contact. The plum blossom contact system described in the present invention refers to equipment that requires the use of plum blossom contacts, such as moving contacts, circuit breakers, switch cabinets, and other equipment.

[0070] The preferred specific embodiments of the present invention have been described in detail above. It should be understood that those of ordinary skill in the art can make many modifications and variations based on the concept of the present invention without creative labor. Therefore, all technical solutions that can be obtained by those skilled in the art in the technical field of the present invention through logical analysis, reasoning, or limited experiments based on the concept of the present invention on the basis of the prior art should fall within the protection scope determined by the claims.

Claims

1. A mounting base for a temperature sensor, characterized in that: It comprises a mounting platform for mounting the temperature sensor and a fixing portion for fixing the mounting base on adjacent contact fingers of the plum blossom contact; the fixing portion is connected to the mounting platform via a connecting portion, and the mounting platform is configured so that when the mounting base is connected to the contact fingers, the mounting platform is recessed in the space between the adjacent contact fingers.

2. The mounting base according to claim 1, characterized in that: The fixing portion includes a first wing portion and a second wing portion, the first wing portion and the second wing portion are located on both sides of the mounting platform along the length direction, the first wing portion and the second wing portion extend along the height direction of the mounting platform in a direction away from the mounting platform, and the first wing portion and the second wing portion are arranged opposite to each other.

3. The mounting base according to claim 2, characterized in that: The first wing portion and the second wing portion are configured to be respectively clamped on two opposite side surfaces of the adjacent contact fingers.

4. The mounting base according to claim 3, characterized in that: The first wing portion and the second wing portion are plate-shaped.

5. The mounting base according to claim 4, characterized in that: The first wing portion and the second wing portion are respectively attached to the side surfaces of the adjacent contact fingers.

6. The mounting base according to claim 2, characterized in that: A first connection portion is provided between the first wing and the mounting platform, a second connection portion is provided between the second wing and the mounting platform, the first connection portion is configured to fit with the top of the contact finger, and the second connection portion is configured to fit with the top of the contact finger.

7. The mounting base according to claim 3, characterized in that: The bottom ends of the first wing and the second wing are both provided with a snap-fit ​​mechanism, and the snap-fit ​​mechanism includes a protrusion that contacts the bottom of the contact finger.

8. The mounting base according to claim 7, characterized in that: The end of the protrusion of the first wing extends in a direction away from the second wing, and the end of the protrusion of the second wing extends in a direction away from the first wing, so that the end of the protrusion is in an open state.

9. The mounting base according to claim 1, wherein: The mounting base is made of metal material.

10. A mounting base for a temperature sensor, characterized in that: include: A mounting platform for mounting the temperature sensor; A first wing portion and a second wing portion located on both sides of the mounting platform along the length direction, wherein the first wing portion and the second wing portion are connected to the mounting platform via a connecting portion; The mounting base is elastic, wherein in an initial state, the distance between the first wing and the second wing is smaller than the distance between two opposite sides of adjacent contact fingers of the plum blossom contact, and the mounting base is configured as follows: the first wing and the second wing are clamped on the adjacent contact fingers, and the mounting platform is recessed in the space between the adjacent contact fingers.

11. The mounting base according to claim 10, characterized in that: The first wing portion and the second wing portion are both plate-shaped.

12. The mounting base according to claim 11, wherein: The first wing portion and the second wing portion are configured such that, when the first wing portion and the second wing portion are clamped on the adjacent contact fingers, the first wing portion and the second wing portion both adhere to the side surfaces of the adjacent contact fingers respectively corresponding to the first wing portion and the second wing portion.

13. The mounting base according to claim 11, wherein: The connecting portion is plate-shaped and is configured to fit the top of the contact finger when the first wing portion and the second wing portion are clamped on the adjacent contact finger.

14. The mounting base according to claim 10, wherein: The bottom ends of the first wing and the second wing are both provided with a snap-fit ​​mechanism, and the snap-fit ​​mechanism includes a protrusion that contacts the bottom of the contact finger.

15. The mounting base according to claim 14, wherein: The end of the protrusion of the first wing extends in a direction away from the second wing, and the end of the protrusion of the second wing extends in a direction away from the first wing, so that the end of the protrusion is in an open state.

16. A temperature measuring device, used for installation on a plum blossom contact, characterized in that: It comprises a mounting base as described in any one of claims 1 to 15 and a temperature sensor, wherein the temperature sensor is fixed on the mounting platform of the mounting base.

17. The temperature measuring device according to claim 16, characterized in that: The temperature measuring device also includes an outer cover, which covers the temperature sensor.

18. The temperature measuring device according to claim 16, characterized in that: The temperature sensor includes a sensor antenna and a sensor chip, and the sensor chip is disposed on the sensor antenna.

19. A plum blossom contact, characterized in that: It comprises a bracket, a spring and a plurality of contact fingers, wherein the plurality of contact fingers are evenly arranged along the circumference of the bracket, and the outer edge of each of the plurality of contact fingers forms the outer circumferential contour of the plum blossom contact; there is a gap between any one of the plurality of contact fingers and an adjacent contact finger; the spring is sleeved at both ends of the plurality of contact fingers; wherein the plum blossom contact further comprises the temperature measuring device according to claim 16, wherein the temperature measuring device is mounted on any two adjacent contacts of the plurality of contacts; the top of the temperature sensor of the temperature measuring device is lower than the maximum outer circumferential contour of the plum blossom contact.

20. A plum blossom contact system, characterized in that: Comprising the plum blossom contact as claimed in claim 19.

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