Temperature measuring device of large current flow contact

Abstract

The utility model discloses a temperature measuring device of a large-current moving contact, which belongs to the technical field of temperature measurement and comprises a protective shell and a plugboard assembly arranged on one side of the protective shell, and a plugboard of the plugboard assembly is matched with a gap of a spacing grid of the moving contact. The protective housing and the plugboard are clamped on two sides of the spacing grid, and the temperature measuring device is fixed on the spacing grid of the moving contact, thereby facilitating the continuous temperature measurement of the moving contact. And other structures of the moving contact are not interfered.

Description

Technical Field

[0001] The utility model relates to the technical field of temperature measurement, in particular to a temperature measuring device for a large current moving contact. Background Art

[0002] Power distribution rooms often use central cabinets and other distribution cabinets. The moving contacts within these cabinets are key components in the circuit. These contacts can generate heat for various reasons during operation. If this heat generation is not detected in time, it can have serious consequences for the power system. The safe and stable operation of these moving contacts is crucial to the continuity and safety of the power system. Therefore, monitoring real-time temperature changes on these moving contacts is crucial.

[0003] In order to avoid failures caused by heat, it is necessary to measure the temperature and temperature rise at the connection between the moving contact and the static contact. During the operation of the moving contact, it is necessary to monitor the temperature changes in real time. When the temperature exceeds the set value, an alarm message is sent and the operator takes countermeasures to ensure safe operation.

[0004] Existing chip temperature measurement components are typically installed in the middle of the contact. This installation method is suitable for measuring the temperature of moving contacts operating below 2000A. However, for moving contacts operating above 2000A, due to structural differences and more stringent safety requirements, the method of installing the temperature measurement component in the middle of the contact is not suitable. Utility Model Content

[0005] In view of the above technical problems existing in the prior art, the utility model provides a temperature measuring device for a large current moving contact, which can be installed on a spacer grid of the moving contact to adapt to the large current moving contact.

[0006] The utility model discloses a temperature measuring device for a large current moving contact, comprising a protection shell and a plug-in board assembly arranged on one side of the protection shell. The plug-in board of the plug-in board assembly matches the spacing grid gap of the moving contact.

[0007] Preferably, the protective shell and the inserting plate are clamped on both sides of the spacer grille; and the inserting plate is provided with a flange protruding inward.

[0008] Preferably, a temperature measuring component is provided in the protective shell, and the temperature measuring component includes a ceramic antenna and a temperature measuring chip installed on one side of the ceramic antenna.

[0009] Preferably, a heat conducting plate is installed on a side of the protective shell facing the plug-in board assembly, and the plug-in board assembly is installed on one side of the heat conducting plate.

[0010] Preferably, a plurality of bayonet holes are provided on the side wall of the protective shell, and the heat conducting plate is mounted on the bayonet holes by snap fastening.

[0011] Preferably, the plug plate assembly includes a first coupling mechanism, which includes a mounting boss, a locking tongue and a locking port, the mounting boss is arranged on the upper side of the heat conducting plate, the locking tongue is arranged on the lower side of the heat conducting plate, and the upper side of the plug plate is hinged on the mounting boss; the lower side of the plug plate is provided with a locking port that cooperates with the locking tongue.

[0012] Preferably, the upper side of the plug plate is rotatably mounted on the mounting boss via a pin.

[0013] Preferably, the plug board assembly includes a second engaging mechanism, which includes a hook provided on the lower side of the plug board; the plug board and its hook cooperate with the spacer grille; and the plug board is fixed to the upper side of the heat conducting plate.

[0014] Preferably, the inserting plate is an elastic metal part.

[0015] Compared with the prior art, the beneficial effects of the present invention are: the protective shell and the plug-in plate are clamped on both sides of the spacer grid, and the temperature measuring device is fixed on the spacer grid of the moving contact, which is conducive to continuous temperature measurement of the moving contact; and will not interfere with other structures of the moving contact. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of a temperature measuring device for a large current moving contact in Example 1;

[0017] Figure 2 is an exploded view of the temperature measuring device of Example 1;

[0018] Figure 3a It is a schematic diagram of the movable plate inserted into the moving contact;

[0019] Figure 3b 1 is a schematic diagram of a buckled movable plate;

[0020] Figure 3c 1 is an installation structure diagram of the temperature measuring device of Example 1;

[0021] Figure 4 is an installation cross-sectional view of the temperature measuring device of Example 1;

[0022] Figure 5 2 is a schematic structural diagram of a temperature measuring device according to Example 2;

[0023] Figure 6 is an exploded view of the temperature measuring device of Example 2;

[0024] Figure 7 Schematic diagram of the installation of the temperature measuring device of Example 2;

[0025] Figure 8 This is a cross-sectional view of the installation of the temperature measuring device of Example 2.

[0026] Markings in the figure: 1 temperature measuring device, 11 protective shell, 111 bayonet, 12 heat conducting plate, 121 buckle,

[0027] 2. Insertion plate assembly, 21. Flange, 22. Insertion plate, 25. First engaging mechanism, 251. Mounting boss, 253. Pin, 255. Locking mouth, 256. Lock tongue, 26. Second engaging mechanism, 261. Hook, 3. Temperature measuring assembly, 31. Temperature measuring chip, 32. Ceramic antenna; 4. Moving contact, 41. Contact arm, 42. Spacer, 43. Gap, 45. Contact piece. DETAILED DESCRIPTION

[0028] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are 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 making creative efforts shall fall within the scope of protection of the present invention.

[0029] The present invention is described in further detail below with reference to the accompanying drawings:

[0030] A temperature measuring device 1 for a large current moving contact, such as Figure 1-Figure 7 , including a protective shell 11 and a plug-in board assembly 2 installed on one side of the protective shell 11 , wherein the plug-in board 22 of the plug-in board assembly 2 matches the gap 43 of the spacer grid 42 of the moving contact 4 .

[0031] The protective shell 11 and the plug-in plate 22 are clamped on both sides of the spacer 42, and the temperature measuring device is fixed on the spacer 42 of the moving contact 4, which is conducive to continuous temperature measurement of the moving contact 4; it will not interfere with other structures of the moving contact; after testing, it can stably measure the moving contact of large current above 2000A.

[0032] like Figure 1 and Figure 5 The insert plate 22 is provided with an inwardly protruding flange 21 for clamping the spacer grille 42. A temperature measurement assembly 3 is disposed within the protective housing 11. The temperature measurement assembly 3 includes a ceramic antenna 32 and a temperature measurement chip 31 mounted on one side of the ceramic antenna 32. The structures of the ceramic antenna 32 and the temperature measurement chip are prior art and will not be further described in detail in this utility model.

[0033] More specifically, the inserting plate 22 is an elastic metal piece.

[0034] Figure 3a and Figure 3cThe schematic structure of the moving contact 4 is shown, wherein a contact arm 41 is provided at the front end, a spacer grid 42 is provided in the middle, and a contact piece 45 is provided at the rear. However, the movable contact structure applicable to the temperature measuring device of the present invention is not limited thereto.

[0035] The protective housing 11 is provided with a heat conducting plate 12 on the side facing the plug board assembly 2, and the plug board assembly 2 is installed on the side of the heat conducting plate 12. The heat conducting plate is used to improve the heat conduction efficiency and improve the temperature measurement accuracy and timeliness of the temperature measuring assembly 3. Specifically, Figure 2 A plurality of bayonet holes 111 are provided on the side wall of the protective shell, and the heat conducting plate 12 is mounted on the bayonet holes 111 via buckles 121 .

[0036] Example 1

[0037] The board assembly 2 includes a first engaging mechanism 25, Figure 1-Figure 4 , shows the structure and installation process of the first engaging mechanism 25. The first engaging mechanism 25 comprises a mounting boss 251, a locking tongue 256, and a locking notch 255. The mounting boss 251 is located on the upper side of the heat conducting plate 12, and the locking tongue 256 is located on the lower side of the heat conducting plate 12. The upper side of the insert plate 22 is hingedly connected to the mounting boss 251; the lower side of the insert plate 22 is provided with a locking notch 255 that mates with the locking tongue 256. The upper side of the insert plate 22 is rotatably mounted on the mounting boss 251 via a pin 253.

[0038] The installation process is as follows Figure 3a-3c , Figure 3a In the process, the lock 255 and the lock tongue 256 of the insert plate are opened, the insert plate 22 is rotated to a suitable angle, and the insert plate 22 is inserted into the gap 43, as shown in FIG. Figure 3b Rotate the protective housing 11, the protective housing 11 under the lock tongue 256 buckle into the lower side of the plug plate 22 on the lock 255, forming a hoop form, complete the installation of the temperature measuring device, such as Figure 3c This mounting structure is secure and prevents it from falling. The flange 21 on the insert plate 22 generates a spring force to compensate for the gap. The flange 21 presses against the side of the spacer grille 42, ensuring a tight fit between the heat conducting plate 12 and the end of the contact 45 on one side of the grille. The insert plate 22 is a movable plate. The temperature of the contact 45 is transmitted to the temperature measuring assembly 3 through the heat conducting plate, thereby detecting the temperature change of the moving contact and transmitting the temperature signal to the outside via the ceramic antenna 32.

[0039] Example 2

[0040] like Figure 5 、 Figure 6 、 Figure 7 and Figure 8The plug-in board assembly 2 includes a second coupling mechanism 26 , which includes a hook 261 provided on the lower side of the plug-in board 22 ; the plug-in board 22 and its hook 261 cooperate with the spacer 42 ; the plug-in board 22 is fixed on the upper side of the heat conducting plate 12 .

[0041] Under the action of the inserting plate 22 and the hook 261 on its lower side, the protective shell 11 hugs the spacer grille 42 to fix it.

[0042] The temperature measuring device of the utility model is suitable for various moving contacts, and is particularly suitable for measuring the temperature of moving contacts with a large current of more than 2000A.

[0043] The temperature measuring device is directly connected to the spacer grid of the moving contact, maintaining an equipotential state when energized. Furthermore, the temperature measuring device does not protrude beyond the outer contour of the moving contact, eliminating the risk of partial discharge. All connections in the temperature measuring device utilize a snap-on structure, eliminating the risk of loose screws falling during use and causing accidents. The temperature measuring device is compact and mounted on the spacer grid, eliminating interference with other moving contact components. This solves the problem of installing temperature sensors on moving contacts with high currents exceeding 2000A.

[0044] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A temperature measuring device for a large current moving contact, characterized in that: It comprises a protective shell (11) and a plugboard assembly (2) installed on one side of the protective shell (11). The inserting plate (22) of the inserting plate assembly (2) is matched with the gap (43) of the spacing grid (42) of the moving contact (4).

2. The temperature measuring device according to claim 1, characterized in that The protective housing (11) and the inserting plate (22) are clamped on both sides of the spacer grille (42); The inserting plate (22) is provided with a flange (21) protruding inward.

3. The temperature measuring device according to claim 1, characterized in that A temperature measuring component (3) is provided in the protective housing (11). The temperature measurement component (3) comprises a ceramic antenna (32) and a temperature measurement chip (31) mounted on one side of the ceramic antenna (32).

4. The temperature measuring device according to claim 1, characterized in that The protective housing (11) is provided with a heat conducting plate (12) on the side facing the plugboard assembly (2). The plug-in board assembly (2) is installed on one side of the heat conducting plate (12).

5. The temperature measuring device according to claim 4, characterized in that: A plurality of bayonet holes (111) are provided on the side wall of the protective shell. The heat conducting plate (12) is mounted on the bayonet (111) via a buckle (121).

6. The temperature measuring device according to claim 4, characterized in that: The plugboard assembly (2) includes a first engaging mechanism (25), wherein the first engaging mechanism (25) includes a mounting boss (251), a locking tongue (256) and a locking port (255). The mounting boss (251) is arranged on the upper side of the heat conducting plate (12), and the locking tongue (256) is arranged on the lower side of the heat conducting plate (12). The upper side of the inserting plate (22) is hinged on the mounting boss (251); A locking opening (255) that matches the locking tongue (256) is provided on the lower side of the inserting plate (22).

7. The temperature measuring device according to claim 6, characterized in that: The upper side of the inserting plate (22) is rotatably mounted on the mounting boss (251) via a pin shaft (253).

8. The temperature measuring device according to claim 4, characterized in that: The inserting plate assembly (2) includes a second engaging mechanism (26), and the second engaging mechanism (26) includes a hook (261) arranged on the lower side of the inserting plate (22); The inserting plate (22) and its hook (261) are matched with the spacer grid (42); The inserting plate (22) is fixed on the upper side of the heat conducting plate (12).

9. The temperature measuring device according to claim 1, characterized in that: The inserting plate (22) is an elastic metal piece.

Images