Plum blossom contact temperature measuring sensor and plum blossom contact

Abstract

The invention provides a tulip contact temperature measurement sensor and a tulip contact, the tulip contact temperature measurement sensor comprises an annular shell, the annular shell comprises a first semi-ring shell and a second semi-ring shell, the first end of the first semi-ring shell is hinged to the first end of the second semi-ring shell, and the second end of the first semi-ring shell is hinged to the second end of the second semi-ring shell; the second end of the first semi-ring shell is detachably connected with the second end of the second semi-ring shell through a buckle structure, and the first semi-ring shell and the second semi-ring shell are matched to form a mounting position for accommodating a tulip contact; more than two temperature probes are arranged on a first side wall, close to a contact finger of the tulip contact, of the annular shell, and are uniformly arranged along the circumferential direction of the annular shell. The tulip contact uses the tulip contact temperature measurement sensor. The tulip contact temperature measurement sensor can improve the temperature measurement precision and the temperature measurement response speed.

Description

Technical Field

[0001] The present invention relates to the technical field of sensors, and in particular to a plum blossom contact temperature measuring sensor, and also to a plum blossom contact using the plum blossom contact temperature measuring sensor. Background Art

[0002] In order to prevent similar safety accidents from happening, it is necessary to monitor the online status of high-current high-voltage cabinets in real time. Among them, temperature collection and analysis of plum blossom contacts is one of the common means. However, the contact arm of the high-current plum blossom contact has a strange shape, the plum blossom contact is large in size, and it is difficult to disassemble, resulting in the inability of existing sensors on the market to meet user needs. An existing temperature measurement type sensor is installed on the contact arm in a bundling manner, and the insulation layer of the contact arm is contact-type temperature measured. However, due to the influence of the insulation layer, the temperature measurement accuracy of this method is poor and does not meet the accuracy requirements. Moreover, this method adopts a single-point temperature measurement method. If the heat source is far away from the temperature measurement point, due to the lag in temperature conduction, the reaction time will be long, and safety accidents are prone to occur. In addition, the sensor is fixed by bundling, which is inconvenient to install.

[0003] Therefore, a more optimized plum blossom contact temperature sensor is needed. Summary of the invention

[0004] The first object of the present invention is to provide a plum blossom contact temperature measuring sensor which can improve the temperature measuring accuracy and the temperature measuring response speed.

[0005] The second object of the present invention is to provide a plum blossom contact which can improve the temperature measurement accuracy and the temperature measurement response speed.

[0006] In order to achieve the above-mentioned main purpose, the plum blossom contact temperature sensor provided by the present invention includes an annular shell, the annular shell includes a first half-annular shell and a second half-annular shell, the first end of the first half-annular shell is hinged to the first end of the second half-annular shell, the second end of the first half-annular shell is detachably connected to the second end of the second half-annular shell through a snap structure, and the first half-annular shell and the second half-annular shell cooperate to form an installation position for accommodating the plum blossom contact; the first side wall of the annular shell close to the contact finger of the plum blossom contact is provided with more than two temperature probes, and the more than two temperature probes are evenly arranged along the circumference of the annular shell.

[0007] As can be seen from the above scheme, the plum blossom contact temperature sensor of the present invention is provided with an annular shell, and two or more temperature probes are provided on the first side wall near the contact finger of the plum blossom contact, so that the two or more temperature probes are evenly arranged along the circumference of the annular shell, and the contact finger of the plum blossom contact can be detected at multiple points, so that the temperature probe directly detects the temperature of the contact finger, thereby improving the temperature measurement accuracy. At the same time, the multi-point temperature detection shortens the heat conduction time, thereby improving the temperature measurement response speed. In addition, the annular shell is provided with a first half-ring shell and a second half-ring shell for buckling connection, which can be easily disassembled.

[0008] In a further solution, the temperature probe is telescopically arranged on the first side wall.

[0009] It can be seen that the retractable arrangement of the temperature probe can facilitate the contact between the temperature probe and the contact finger of the plum blossom contact, thereby ensuring the reliability of the contact.

[0010] In a further scheme, the temperature probe includes a temperature measuring metal block, a spring part and a metal sheet, and the temperature measuring metal block and the metal sheet are connected by the spring part; a circuit cavity is provided in the annular shell, the temperature measuring metal block telescopes from the circuit cavity to the outside of the first side wall, and the metal sheet is installed on the inner wall of the circuit cavity opposite to the first side wall; the circuit cavity is provided with a circuit board, and a probe is provided on the circuit board, and the probe is in contact with the metal sheet.

[0011] It can be seen that the temperature probe can facilitate the extension and contraction of the temperature measuring metal block by setting the temperature measuring metal block and the spring part. At the same time, the temperature probe is also provided with a metal sheet, and a probe is provided on the circuit board to contact the metal sheet, so that the temperature measuring metal block, the spring part, the metal sheet and the probe can form an equipotential connection, avoiding the discharge of the charged body of the plum blossom contact to the metal part of the sensor under high voltage, burning the product and causing a combustion event.

[0012] In a further scheme, a CT power supply assembly is arranged in the circuit cavity, and the CT power supply assembly is used to supply power to the circuit board; the CT power supply assembly includes a soft magnetic alloy strip, a coil frame and a coil, and the coil frame is provided with a through hole, and the soft magnetic alloy strip passes through the coil frame through the through hole, and the coil is wound on the coil frame; the soft magnetic alloy strip extends from the second end of the first semi-ring shell to the second end of the second semi-ring shell.

[0013] It can be seen that by setting up a CT power taking component, power can be taken by induction and supplied to the circuit components in the sensor. At the same time, the soft magnetic alloy strip in the CT power taking component is set in the circuit cavity to avoid the discharge of the product caused by the exposure of the soft magnetic alloy metal, which brings hidden dangers to the equipment.

[0014] In a further embodiment, the soft magnetic alloy strip located at the second end of the first semi-annular shell and the soft magnetic alloy strip located at the second end of the second semi-annular shell are stacked.

[0015] It can be seen that by designing the soft magnetic alloy strip to be closed in a stacked manner from head to tail, the closure reliability of the soft magnetic alloy strip can be guaranteed, and the power-drawing capacity of the product can be guaranteed.

[0016] In a further embodiment, the soft magnetic alloy strip at the first end of the first semi-ring shell is provided with a first bend; and / or the soft magnetic alloy strip at the first end of the second semi-ring shell is provided with a second bend.

[0017] It can be seen that by providing the first bending portion and the second bending portion, it is possible to avoid the hinge between the first half-ring shell and the second half-ring shell from stretching the soft magnetic alloy strip and causing it to break during rotation.

[0018] In a further solution, a spring buckle is provided at the second end of the first semi-ring shell, and a clamping groove is provided at the second end of the second semi-ring shell, and the spring buckle is buckled with the clamping groove.

[0019] It can be seen that by providing the spring buckle and the slot, disassembly and assembly can be facilitated.

[0020] In a further solution, the spring buckle is provided with a double serrated buckling portion, and the card slot is a double card slot that cooperates with the buckling portion.

[0021] It can be seen that the spring buckle can be made firm and secure after buckling by providing a double-serrated buckling portion, thereby ensuring the stability of installation.

[0022] In a further solution, the mounting position is provided with a limiting structure that cooperates with the outer peripheral wall of the contact arm of the plum blossom contact.

[0023] It can be seen that by providing a limiting structure that cooperates with the outer peripheral wall of the contact arm of the plum blossom contact, installation and fixation can be facilitated.

[0024] In order to achieve the above-mentioned second purpose, the plum blossom contact provided by the present invention includes a contact arm and a contact finger, the contact finger is installed on the contact arm, and the plum blossom contact also includes a plum blossom contact temperature sensor; the plum blossom contact temperature sensor uses the above-mentioned plum blossom contact temperature sensor; the first half ring shell and the second half ring shell are buckled to tighten the contact arm; the temperature probe is in contact with the contact finger. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural diagram of an embodiment of a plum blossom contact of the present invention.

[0026] Figure 2 It is a structural diagram of a plum blossom contact temperature measuring sensor from one perspective in a plum blossom contact embodiment of the present invention.

[0027] Figure 3 It is a structural exploded view of the plum blossom contact temperature measuring sensor in the plum blossom contact embodiment of the present invention.

[0028] Figure 4 It is a structural diagram of the plum blossom contact temperature measuring sensor after a portion of the housing is hidden in the plum blossom contact embodiment of the present invention.

[0029] Figure 5 yes Figure 4 Enlarged view of point A in the middle.

[0030] Figure 6 It is a structural diagram of the buckling part in the plum blossom contact embodiment of the present invention.

[0031] Figure 7 It is a structural cross-sectional view of a temperature probe in a plum blossom contact embodiment of the present invention from one viewing angle.

[0032] Figure 8 It is a structural cross-sectional view from another perspective of the temperature probe in the plum blossom contact embodiment of the present invention.

[0033] Fig. 9 yes Figure 8 Enlarged view of point B in the middle.

[0034] Fig.10 It is a structural diagram of the temperature measuring metal block in the plum blossom contact embodiment of the present invention.

[0035] Fig.11 It is a structural diagram of the plum blossom contact temperature measuring sensor from another perspective in the plum blossom contact embodiment of the present invention.

[0036] Fig.12 It is a structural cross-sectional view of an embodiment of a plum blossom contact of the present invention.

[0037] Fig.13 It is a structural diagram of a plum blossom contact embodiment of the present invention viewed from the front along the side facing away from the contact finger.

[0038] Fig.14 yes Fig.12 Enlarged view of point C in the middle.

[0039] The present invention is further described below in conjunction with the accompanying drawings and embodiments. DETAILED DESCRIPTION

[0040] like Figure 1 As shown, in this embodiment, the plum blossom contact includes a contact arm 1, a plum blossom contact temperature sensor 2 and a contact finger 3. The plum blossom contact temperature sensor 2 and the contact finger 3 are both installed on the contact arm 1. The connection structure of the contact arm 1 and the contact finger 3 can adopt a known structure and will not be repeated here.

[0041] In this embodiment, see Figure 2 and Figure 3 The plum blossom contact temperature sensor 2 includes an annular shell, which includes a first semi-annular shell 21 and a second semi-annular shell 22. The first end of the first semi-annular shell 21 is hinged to the first end of the second semi-annular shell 22, and the second end of the first semi-annular shell 21 is detachably connected to the second end of the second semi-annular shell 22 through a snap-on structure. The first semi-annular shell 21 and the second semi-annular shell 22 cooperate to form an installation position 211 for accommodating the plum blossom contact.

[0042] The second end of the first semi-ring housing 21 is provided with an elastic buckle 25, and the second end of the second semi-ring housing 22 is provided with a clamping groove 26, and the elastic buckle 25 is buckled with the clamping groove 26. By providing the elastic buckle 25 and the clamping groove 26, it is convenient to disassemble and assemble.

[0043] See also Figure 4 , Figure 5 and Figure 6 The spring buckle 25 is provided with a double sawtooth-shaped buckle part 251 and a spring 252, and the slot 26 is a double slot matched with the buckle part 251. The second end of the first semi-ring housing 21 is also provided with a spring buckle slot 212, the first end of the spring 252 abuts against the spring buckle slot 212, and the second end of the spring 252 abuts against the buckle part 251, and the buckle part 251 can be telescopically installed in the spring buckle slot 212. The spring buckle 25 is provided with a double sawtooth-shaped buckle part 251, which can make it firm and secure after buckling, ensuring the stability of installation.

[0044] The first side wall 23 of the annular housing near the contact finger 3 of the plum blossom contact is provided with more than two temperature probes 24, and the more than two temperature probes 24 are evenly arranged along the circumference of the annular housing. The number of temperature probes 24 can be set as needed. In this embodiment, the number of temperature probes 24 is two. Preferably, the temperature probe 24 is telescopically arranged on the first side wall 23. The telescopic arrangement of the temperature probe 24 can facilitate the abutment of the temperature probe 24 with the contact finger 3 of the plum blossom contact, thereby ensuring the reliability of the contact.

[0045] See also Figure 7 , Figure 8 and Fig. 9 The temperature probe 24 includes a temperature measuring metal block 241, a spring member 242, a metal sheet 243 and a thermistor (not shown). The temperature measuring metal block 241 and the metal sheet 243 are connected by the spring member 242, and the thermistor is installed on the temperature measuring metal block 241. A circuit cavity 213 is provided in the annular shell, and the temperature measuring metal block 241 telescopically moves from the circuit cavity 213 to the outside of the first side wall 23, and the metal sheet 243 is installed on the inner wall of the circuit cavity 213 opposite to the first side wall 23. The circuit cavity 213 is provided with a circuit board 28, and the circuit board 28 is provided with a probe 281, and the probe 281 is in contact with the metal sheet 243. The temperature probe 24 can facilitate the telescopic movement of the temperature measuring metal block 241 by providing the temperature measuring metal block 241 and the spring member 242. At the same time, the temperature probe 24 is also provided with a metal sheet 243, and a probe 281 is provided on the circuit board 28 to contact the metal sheet 243, so that the temperature measuring metal block 241, the spring part 242, the metal sheet 243 and the probe 281 can form an equipotential connection, thereby preventing the charged body of the plum blossom contact from discharging to the metal parts of the sensor under high voltage, thereby burning the product and causing a combustion incident.

[0046] See also Fig.10The temperature measuring metal block 241 is provided with a spring hole 2411 and a thermistor hole 2412, the spring member 242 is inserted into the spring hole 2411, and the thermistor is inserted into the thermistor hole 2412. In addition, the width of the temperature measuring metal block 241 is greater than the maximum distance between two adjacent contact fingers 3, so as to ensure that the temperature measuring metal block 241 of the temperature probe 24 is not stuck in the gap between the contact fingers 3.

[0047] Depend on Figure 3 and Figure 4 It can be seen that in this embodiment, a CT power supply component 27 is provided in the circuit cavity 213 , and the CT power supply component 27 is used to supply power to the circuit board 28 .

[0048] The CT power supply assembly 27 includes a soft magnetic alloy strip 271, a coil frame 272 and a coil (not shown), the coil frame 272 is provided with a perforation (not shown), the soft magnetic alloy strip 271 passes through the coil frame 272 through the perforation, and the coil is wound on the coil frame 272. The soft magnetic alloy strip 271 is arranged in the circuit cavity 213 along the circumference of the annular shell, and the soft magnetic alloy strip 271 extends from the second end of the first semi-annular shell 21 to the second end of the second semi-annular shell 22. By setting the CT power supply assembly 27, inductive power supply can be performed and power can be supplied to the circuit devices in the sensor. The power supply principle is a well-known technology for those skilled in the art and will not be repeated here. At the same time, the soft magnetic alloy strip 271 in the CT power supply assembly 27 is set in the circuit cavity 213 to avoid the discharge of the product caused by the soft magnetic alloy metal being exposed, which brings hidden dangers to the equipment.

[0049] Depend on Figure 5 It can be seen that the soft magnetic alloy strip 271 at the second end of the first semi-ring shell 21 and the soft magnetic alloy strip 271 at the second end of the second semi-ring shell 22 are stacked. By designing the head-to-tail stacking closure of the soft magnetic alloy strip 271, the closure reliability of the soft magnetic alloy strip 271 can be ensured, and the power supply capability of the product can be ensured.

[0050] In addition, the soft magnetic alloy strip 271 located at the first end of the first semi-ring shell 21 is provided with a first bending portion 273, and the soft magnetic alloy strip 271 located at the first end of the second semi-ring shell 22 is provided with a second bending portion 274. By providing the first bending portion 273 and the second bending portion 274, it is possible to avoid the soft magnetic alloy strip 271 being stretched and broken at the hinge of the first semi-ring shell 21 and the second semi-ring shell 22 during rotation.

[0051] In this embodiment, the installation position 211 is provided with a limiting structure that cooperates with the outer peripheral wall of the contact arm 1 of the plum blossom contact. By providing a limiting structure that cooperates with the outer peripheral wall of the contact arm 1 of the plum blossom contact, installation and fixing can be facilitated. In this embodiment, see Fig.11 , Fig.12 and Fig.13The limiting structure includes a limiting groove 29 and a limiting boss 30. The limiting groove 29 is located on the side of the annular shell facing the contact arm 1, and the limiting boss 30 extends from the first side wall 30 into the limiting groove 29. A rib 11 is provided on the outer peripheral wall of the contact arm 1. The rib 11 extends along the axial direction of the contact arm 1, and the rib 11 is located in the limiting groove 29. A gap 4 is provided between the rib 11 and the contact finger 3, and the limiting boss 30 is inserted into the gap 4. The limiting structure can limit the plum blossom contact temperature sensor 2 in the horizontal direction and the vertical direction by providing the limiting groove 29 and the limiting boss 30 in cooperation with the rib 11 of the contact arm 1.

[0052] When installing the plum blossom contact temperature sensor 2 in this embodiment, first separate the second end of the first semi-ring shell 21 from the second end of the second semi-ring shell 22, then use the first semi-ring shell 21 and the second semi-ring shell 22 to clamp the contact arm 1, so that the contact arm 1 is aligned with the limiting structure and the contact arm 1 is located in the installation position 211, and finally, the second end of the first semi-ring shell 21 and the second end of the second semi-ring shell 22 are buckled. When the first semi-ring shell 21 and the second semi-ring shell 22 are buckled, the contact arm 1 is tightened, and at the same time, the temperature probe 24 is in contact with the contact finger 3. When the temperature probe 24 is in contact with the contact finger 3, Fig.14 The installation is completed.

[0053] As can be seen from the above, the plum blossom contact temperature sensor 2 of the present invention is provided with an annular shell, and two or more temperature probes 24 are provided on the first side wall 23 near the contact finger 3 of the plum blossom contact, so that the two or more temperature probes 24 are evenly arranged along the circumference of the annular shell, and the contact finger 3 of the plum blossom contact can be detected at multiple points, so that the temperature probe 24 directly detects the temperature of the contact finger 3, thereby improving the temperature measurement accuracy. At the same time, multi-point temperature detection shortens the heat conduction time, thereby improving the temperature measurement response speed. In addition, the annular shell is provided with a first semi-annular shell 21 and a second semi-annular shell 22 for buckling connection, which can be easily disassembled.

[0054] It should be noted that the above are only preferred embodiments of the present invention, but the design concept of the invention is not limited thereto, and any non-substantial modifications made to the present invention using this concept also fall within the protection scope of the present invention.

Claims

1. A plum blossom contact temperature sensor, characterized in that: The annular housing comprises a first half-ring housing and a second half-ring housing, wherein the first end of the first half-ring housing is hinged to the first end of the second half-ring housing, the second end of the first half-ring housing is detachably connected to the second end of the second half-ring housing through a snap-fit ​​structure, and the first half-ring housing and the second half-ring housing cooperate to form an installation position for accommodating a plum blossom contact; The first side wall of the annular housing close to the contact finger of the plum blossom contact is provided with more than two temperature probes, and the more than two temperature probes are evenly arranged along the circumference of the annular housing.

2. The plum blossom contact temperature sensor according to claim 1, characterized in that: The temperature probe is telescopically arranged on the first side wall.

3. The plum blossom contact temperature sensor according to claim 2, characterized in that: The temperature probe comprises a temperature measuring metal block, a spring component and a metal sheet, and the temperature measuring metal block and the metal sheet are connected via the spring component; A circuit cavity is provided in the annular housing, the temperature measuring metal block telescopically moves from the circuit cavity to the outside of the first side wall, and the metal sheet is installed on the inner wall of the circuit cavity opposite to the first side wall; The circuit cavity is provided with a circuit board, the circuit board is provided with a probe, and the probe is in contact with the metal sheet.

4. The plum blossom contact temperature sensor according to claim 3, characterized in that: A CT power supply component is provided in the circuit cavity, and the CT power supply component is used to supply power to the circuit board; The CT power taking component comprises a soft magnetic alloy strip, a coil frame and a coil, the coil frame is provided with a through hole, the soft magnetic alloy strip passes through the coil frame through the through hole, and the coil is wound on the coil frame; The soft magnetic alloy strip extends from the second end of the first semi-annular shell to the second end of the second semi-annular shell.

5. The plum blossom contact temperature sensor according to claim 4, characterized in that: The soft magnetic alloy strip located at the second end of the first semi-annular shell and the soft magnetic alloy strip located at the second end of the second semi-annular shell are stacked.

6. The plum blossom contact temperature sensor according to claim 4, characterized in that: The soft magnetic alloy strip located at the first end of the first semi-annular shell is provided with a first bent portion; and / or the soft magnetic alloy strip located at the first end of the second semi-annular shell is provided with a second bent portion.

7. The plum blossom contact temperature sensor according to any one of claims 1 to 6, characterized in that: The second end of the first semi-ring shell is provided with a spring buckle, and the second end of the second semi-ring shell is provided with a clamping groove, and the spring buckle is buckled with the clamping groove.

8. The plum blossom contact temperature sensor according to claim 7, characterized in that: The spring buckle is provided with a double-serrated buckling portion, and the clamping slot is a double clamping slot matched with the buckling portion.

9. The plum blossom contact temperature sensor according to any one of claims 1 to 6, characterized in that: The installation position is provided with a limiting structure which cooperates with the outer peripheral wall of the contact arm of the plum blossom contact.

10. A plum blossom contact, comprising a contact arm and a contact finger, wherein the contact finger is mounted on the contact arm, characterized in that: The plum blossom contact also includes a plum blossom contact temperature sensor; The plum blossom contact temperature sensor applies the plum blossom contact temperature sensor according to any one of claims 1 to 9; The first half ring shell and the second half ring shell are fastened together to tighten the contact arm; The temperature probe abuts against the contact finger.

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