Plum blossom contact temperature measuring sensor and plum blossom contact

Abstract

The utility model provides a tulip contact temperature measurement sensor and a tulip contact, the tulip contact temperature measurement sensor comprises an annular housing, the annular housing comprises a first semi-ring housing and a second semi-ring housing, the first end of the first semi-ring housing is hinged with the first end of the second semi-ring housing, and the second end of the first semi-ring housing is hinged with the second end of the second semi-ring housing. 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 plum blossom contact temperature measurement sensor can improve the temperature measurement precision and the temperature measurement response speed.

Description

TECHNICAL FIELD

[0001] The utility model relates to sensor technical field, specifically, relate to a plum blossom contact temperature measurement sensor, and further relate to plum blossom contact temperature measurement sensor's plum blossom contact. BACKGROUND

[0002] There are many equipment safety accident lessons in the operation of high-voltage cabinet power equipment in China, in order to prevent the occurrence of similar safety accidents, it is necessary to carry out online state real-time monitoring to the high current high-voltage cabinet. Among them, the temperature collection and analysis of plum blossom contact is one of the common means. However, the appearance of the high current plum blossom contact arm is peculiar, the plum blossom contact is large in size and difficult to disassemble, etc., which leads to the fact that the existing sensors on the market cannot meet the user's demand. A kind of temperature measurement type sensor is installed on the arm in a binding way, and the insulating layer of the arm is contacted for temperature measurement, but due to the influence of the insulating layer, the temperature measurement precision is poor, and the precision requirement is not met. Moreover, the single-point temperature measurement method is used, if the distance between the heat source and the temperature measurement point is far, due to the hysteresis of temperature conduction, the reaction time will be long, and safety accidents are prone to occur. In addition, the sensor is fixed by binding, and the installation is not convenient.

[0003] Therefore, a more optimized plum blossom contact temperature measurement sensor is needed. UTILITY MODEL CONTENT

[0004] The first purpose of the utility model is to provide a plum blossom contact temperature measurement sensor capable of improving temperature measurement precision and temperature measurement response speed.

[0005] The second purpose of the utility model is to provide a plum blossom contact capable of improving temperature measurement precision and temperature measurement response speed.

[0006] In order to achieve the above-mentioned main purpose, the plum blossom contact temperature measurement sensor provided by the utility model comprises a ring-shaped shell, the ring-shaped shell comprises a first half-ring shell and a second half-ring shell, the first end of the first half-ring shell is hinged to the first end of the second half-ring shell, the second end of the first half-ring shell is detachably connected to the second end of the second half-ring shell through a buckle structure, and the first half-ring shell and the second half-ring shell cooperate to form a mounting position for accommodating the plum blossom contact. The first side wall of the ring-shaped shell close to the contact finger of the plum blossom contact is provided with two or more temperature probes, and the two or more temperature probes are uniformly arranged along the circumference of the ring-shaped shell.

[0007] From the above scheme can be known, the utility model discloses the temperature sensor of the contact of plum blossom is through setting annular casing, and two or more temperature probes are arranged on the first side wall close to the contact finger of the contact of plum blossom, makes two or more temperature probes even arrangement along the circumference of annular casing, can carry out the multi-point detection to the contact finger of the contact of plum blossom, makes temperature probe direct detection the temperature of contact finger, improves the temperature measurement precision, and simultaneously, multi-point temperature detection, heat conduction time shortening, to improve the temperature measurement response speed. In addition, annular casing is connected by the buckling of first half ring casing and second half ring casing, can be convenient to dismount.

[0008] Further scheme, the temperature probe is telescopically arranged at the first side wall.

[0009] Therefore, the temperature probe is telescopically arranged, can be convenient for the contact finger of the contact of plum blossom, guarantees the reliability of contact.

[0010] Further scheme, the temperature probe includes temperature measurement metal block, spring piece and metal sheet, and the temperature measurement metal block is connected with the metal sheet through the spring piece;Annular casing is provided with circuit cavity, and the temperature measurement metal block is telescopically moved from the circuit cavity to the outside of the first side wall, and the metal sheet is installed in the inner wall opposite to the first side wall in the circuit cavity;The circuit cavity is provided with circuit board, and the probe is arranged on the circuit board, and the probe is in contact with the metal sheet.

[0011] Therefore, the temperature probe is telescopically arranged, can be convenient for the contact finger of the contact of plum blossom, guarantees the reliability of contact.

[0012] Further scheme, the circuit cavity is provided with CT power taking assembly, and the CT power taking assembly is used to power supply to the circuit board;The CT power taking assembly includes soft magnetic alloy belt, coil skeleton and coil, and the coil skeleton is provided with perforation, and the soft magnetic alloy belt is threaded through the coil skeleton from the perforation, and the coil is wound on the coil skeleton;The soft magnetic alloy belt extends from the second end of the first half ring casing to the second end of the second half ring casing.

[0013] Therefore, by setting the CT power taking assembly, the circuit device in the sensor can be powered by induction. At the same time, the soft magnetic alloy belt in the CT power taking assembly is arranged in the circuit cavity, which avoids the exposure of the soft magnetic alloy metal and causes the discharge phenomenon of the product, which brings hidden trouble to the equipment.

[0014] Further scheme, the soft magnetic alloy belt at the second end of the first half ring casing and the soft magnetic alloy belt at the second end of the second half ring casing are arranged in layers.

[0015] Therefore, by designing the soft magnetic alloy strip in a closed manner with the first and second ends stacked, the soft magnetic alloy strip can be reliably closed, and the product power taking capability can be ensured.

[0016] In a further aspect, the soft magnetic alloy strip at the first end of the first half-ring shell is provided with a first bending portion, and / or the soft magnetic alloy strip at the first end of the second half-ring shell is provided with a second bending portion.

[0017] Therefore, by providing the first and second bending portions, the first and second half-ring shells can be prevented from being stretched and broken when being rotated.

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

[0019] Therefore, by providing the spring buckle and the clamping groove, the installation and disassembly can be facilitated.

[0020] In a further aspect, the spring buckle is provided with a double-sawtooth-shaped buckling portion, and the clamping groove is a double clamping groove matched with the buckling portion.

[0021] Therefore, by providing the double-sawtooth-shaped buckling portion, the spring buckle can be firmly buckled, and the stability of the installation can be ensured.

[0022] In a further aspect, the installation position is provided with a limiting structure matched with the outer peripheral wall of the contact arm of the star-shaped contact.

[0023] Therefore, by providing the limiting structure matched with the outer peripheral wall of the contact arm of the star-shaped contact, the installation and fixation can be facilitated.

[0024] In order to achieve the above-mentioned second purpose, the star-shaped contact provided by the utility model comprises a contact arm and a contact finger, the contact finger is installed on the contact arm, the star-shaped contact further comprises a star-shaped contact temperature measurement sensor; the star-shaped contact temperature measurement sensor applies the star-shaped contact temperature measurement sensor mentioned above; the first half-ring shell and the second half-ring shell are buckled to clamp the contact arm; and the temperature probe abuts against the contact finger. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a structural diagram of an embodiment of the star-shaped contact of the utility model.

[0026] Figure 2 is a structural diagram of a star-shaped contact temperature measurement sensor in an embodiment of the star-shaped contact of the utility model from one perspective.

[0027] Figure 3 is a structural exploded view of the star-shaped contact temperature measurement sensor in an embodiment of the star-shaped contact of the utility model.

[0028] Figure 4is the structural view of the hidden part of the temperature sensor of the plum blossom contact in the plum blossom contact embodiment of the utility model.

[0029] Figure 5 is Figure 4 the enlarged view of A in the middle.

[0030] Figure 6 is the structural view of the buckle part in the plum blossom contact embodiment of the utility model.

[0031] Figure 7 is the structural sectional view of one perspective of the temperature probe in the plum blossom contact embodiment of the utility model.

[0032] Figure 8 is the structural sectional view of another perspective of the temperature probe in the plum blossom contact embodiment of the utility model.

[0033] Figure 9 is Figure 8 the enlarged view of B in the middle.

[0034] Figure 10 is the structural view of the temperature measuring metal block in the plum blossom contact embodiment of the utility model.

[0035] Figure 11 is the structural view of another perspective of the temperature sensor of the plum blossom contact in the plum blossom contact embodiment of the utility model.

[0036] Figure 12 is the structural sectional view of the plum blossom contact embodiment of the utility model.

[0037] Figure 13 is the structural view of the plum blossom contact in the embodiment of the utility model along the front view of the side opposite to the contact finger.

[0038] Figure 14 is Figure 12 the enlarged view of C in the middle.

[0039] The utility model is further described below in combination with the drawings and embodiments. DETAILED DESCRIPTION

[0040] As Figure 1 shown, in the embodiment, the plum blossom contact comprises 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, and the connecting structure of the contact arm 1 and the contact finger 3 can adopt a known structure, which will not be repeated here.

[0041] In the embodiment, referring to Figure 2 and Figure 3The temperature measuring sensor 2 of the tulip contact comprises a ring-shaped shell, the ring-shaped shell comprises a first half-ring shell 21 and a second half-ring shell 22, a first end of the first half-ring shell 21 is hinged to a first end of the second half-ring shell 22, a second end of the first half-ring shell 21 is detachably connected to a second end of the second half-ring shell 22 through a buckle structure, and the first half-ring shell 21 and the second half-ring shell 22 cooperatively form a mounting position 211 for accommodating the tulip contact.

[0042] The second end of the first half-ring shell 21 is provided with a elastic buckle 25, the second end of the second half-ring shell 22 is provided with a clamping groove 26, and the elastic buckle 25 is buckled with the clamping groove 26. By arranging the elastic buckle 25 and the clamping groove 26, the disassembly and assembly can be facilitated.

[0043] Referring to Figure 4 , Figure 5 and Figure 6 , the elastic buckle 25 is provided with a double-sawtooth buckling part 251 and a spring 252, and the clamping groove 26 is a double clamping groove matched with the buckling part 251. The second end of the first half-ring shell 21 is further provided with an elastic buckle groove 212, a first end of the spring 252 abuts against the elastic buckle groove 212, a second end of the spring 252 abuts against the buckling part 251, and the buckling part 251 is telescopically arranged in the elastic buckle groove 212. By arranging the double-sawtooth buckling part 251, the elastic buckle 25 can be firmly buckled after buckling, thereby ensuring the stability of the installation.

[0044] The ring-shaped shell is provided, close to a first side wall 23 of a contact finger 3 of the tulip contact, with two or more temperature probes 24, and the two or more temperature probes 24 are uniformly arranged along a circumferential direction of the ring-shaped shell. The number of the temperature probes 24 can be arranged according to requirements, and in the embodiment, the number of the temperature probes 24 is two. Preferably, the temperature probes 24 are telescopically arranged in the first side wall 23. By telescopically arranging the temperature probes 24, the temperature probes 24 can abut against the contact finger 3 of the tulip contact, thereby ensuring the reliability of the contact.

[0045] Referring to Figure 7 , Figure 8 and Figure 9The temperature probe 24 comprises 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 through the spring member 242, and the thermistor is installed on the temperature measuring metal block 241. An electric circuit cavity 213 is arranged in the annular housing, the temperature measuring metal block 241 is extended and retracted from the inside of the electric circuit cavity 213 to the outside of the first side wall 23, and the metal sheet 243 is installed on the inner wall opposite to the first side wall 23 in the electric circuit cavity 213. The electric circuit cavity 213 is provided with a circuit board 28, 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 is provided with the temperature measuring metal block 241 and the spring member 242, so that the temperature measuring metal block 241 can be extended and retracted conveniently. Meanwhile, the temperature probe 24 is also provided with the metal sheet 243, the probe 281 on the circuit board 28 is in contact with the metal sheet 243, so that the temperature measuring metal block 241, the spring member 242, the metal sheet 243 and the probe 281 are in equipotential connection, and the discharge of the metal member of the sensor by the live part of the star contact under the high-voltage state is avoided, so that the product is not burned out and the combustion event is caused.

[0046] It can be seen from Figure 10 The 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 the adjacent two contact fingers 3, so that the temperature measuring metal block 241 of the temperature probe 24 is not clamped into the gap between the contact fingers 3.

[0047] It can be seen from Figure 3 and Figure 4 that the electric circuit cavity 213 is provided with a CT power taking assembly 27 in the embodiment, and the CT power taking assembly 27 is used for supplying power to the circuit board 28.

[0048] The CT power taking assembly 27 comprises a soft magnetic alloy strip 271, a coil former 272 and a coil (not shown), the coil former 272 is provided with a through hole (not shown), the soft magnetic alloy strip 271 penetrates through the coil former 272 from the through hole, and the coil is wound on the coil former 272. The soft magnetic alloy strip 271 is arranged in the electric circuit cavity 213 along the circumferential direction of the annular housing, and extends from the second end of the first half-ring housing 21 to the second end of the second half-ring housing 22. The CT power taking assembly 27 can be used for inductive power taking and supplying power to the circuit device in the sensor, and the principle of power taking is known to those skilled in the art, which will not be described here. Meanwhile, the soft magnetic alloy strip 271 in the CT power taking assembly 27 is arranged in the electric circuit cavity 213, so that the soft magnetic alloy metal is not exposed to cause the discharge of the product and bring hidden troubles to the equipment.

[0049] It can be seen from Figure 5It can be known that the soft magnetic alloy strips 271 at the second end of the first half-ring shell 21 and the soft magnetic alloy strips 271 at the second end of the second half-ring shell 22 are stacked. By stacking the soft magnetic alloy strips 271 at the head and tail, the soft magnetic alloy strips 271 can be reliably closed, and the product power supply capability can be ensured.

[0050] In addition, the soft magnetic alloy strips 271 at the first end of the first half-ring shell 21 are provided with first bending parts 273, and the soft magnetic alloy strips 271 at the first end of the second half-ring shell 22 are provided with second bending parts 274. By providing the first bending parts 273 and the second bending parts 274, the stretching of the soft magnetic alloy strips 271 caused by the hinge of the first half-ring shell 21 and the second half-ring shell 22 during rotation can be avoided.

[0051] In the embodiment, the mounting position 211 is provided with a limiting structure matched with the outer peripheral wall of the arm 1 of the blower contact. By providing the limiting structure matched with the outer peripheral wall of the arm 1 of the blower contact, the installation and fixation can be facilitated. In the embodiment, referring to Figs. 1 to 3, Figure 11 、 Figure 12 and Figure 13 , the 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 arm 1, and the limiting boss 30 extends into the limiting groove 29 from the first side wall 30. The outer peripheral wall of the arm 1 is provided with a rib 11 extending along the axial direction of the 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 is matched with the rib 11 of the arm 1 by providing the limiting groove 29 and the limiting boss 30, so that the blower contact temperature sensor 2 can be limited in the horizontal direction and the vertical direction.

[0052] In the embodiment, when the blower contact temperature sensor 2 is installed, first, the second end of the first half-ring shell 21 is separated from the second end of the second half-ring shell 22, then the arm 1 is clamped by the first half-ring shell 21 and the second half-ring shell 22, the arm 1 is aligned with the limiting structure, and the arm 1 is located in the mounting position 211, finally, the second end of the first half-ring shell 21 and the second end of the second half-ring shell 22 are buckled. When the first half-ring shell 21 and the second half-ring shell 22 are buckled, the arm 1 is clamped, at the same time, the temperature probe 24 abuts against the contact finger 3, and when the temperature probe 24 abuts against the contact finger 3, as shown in Figure 14 , the installation is completed.

[0053] From above, the plum blossom contact temperature measuring sensor 2 is provided with the annular shell, and two or more temperature probes 24 are arranged on the first side wall 23 close to the contact finger 3 of the plum blossom contact, so that the two or more temperature probes 24 are uniformly arranged along the circumference of the annular shell, the contact finger 3 of the plum blossom contact can be detected by multiple points, the temperature probe 24 directly detects the temperature of the contact finger 3, the temperature measuring precision is improved, meanwhile, the multiple point temperature detection shortens the heat conduction time, so that the temperature measuring response speed is improved. In addition, the annular shell is connected by buckling connection of the first half ring shell 21 and the second half ring shell 22, so that the annular shell can be conveniently disassembled.

[0054] It should be noted that the above is only the preferred embodiment of the utility model, but the design concept of the utility model is not limited to this, and any non-essential modification of the utility model made by using the concept also falls within the protection scope of the utility model.

Claims

1. A temperature measuring sensor for a wiper contact, characterized by: The ring-shaped shell comprises a first half-ring shell and a second half-ring shell, a first end of the first half-ring shell is hinged to a first end of the second half-ring shell, a second end of the first half-ring shell is detachably connected to a second end of the second half-ring shell through a buckle structure, and the first half-ring shell and the second half-ring shell cooperate to form a mounting position for accommodating a star contact; The ring-shaped shell is provided with two or more temperature probes near a first side wall of a finger of the star contact, and the two or more temperature probes are uniformly arranged along a circumferential direction of the ring-shaped shell.

2. The star contact temperature measurement sensor according to claim 1, wherein: The temperature probe is telescopically arranged on the first side wall.

3. The star contact temperature measurement sensor according to claim 2, wherein: The temperature probe comprises a temperature measurement metal block, a spring member and a metal sheet, the temperature measurement metal block and the metal sheet are connected through the spring member; The ring-shaped shell is provided with a circuit cavity, the temperature measurement metal block is telescopically moved from the circuit cavity to the outside of the first side wall, and the metal sheet is mounted on an 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 star contact temperature measurement sensor according to claim 3, wherein: The circuit cavity is provided with a CT power taking assembly, and the CT power taking assembly is used to supply power to the circuit board; The CT power taking assembly comprises a soft magnetic alloy strip, a coil former and a coil, the coil former is provided with a through hole, the soft magnetic alloy strip penetrates through the coil former through the through hole, and the coil is wound on the coil former; The soft magnetic alloy strip extends from the second end of the first half-ring shell to the second end of the second half-ring shell.

5. The star contact temperature measurement sensor according to claim 4, wherein: The soft magnetic alloy strip at the second end of the first half-ring shell and the soft magnetic alloy strip at the second end of the second half-ring shell are arranged in a laminated manner.

6. The star contact temperature measurement sensor according to claim 4, wherein: The soft magnetic alloy strip at the first end of the first half-ring shell is provided with a first bending part, and / or the soft magnetic alloy strip at the first end of the second half-ring shell is provided with a second bending part.

7. The star contact temperature measurement sensor according to any one of claims 1 to 6, wherein: The second end of the first half-ring shell is provided with a spring buckle, the second end of the second half-ring shell is provided with a clamping groove, and the spring buckle is buckled with the clamping groove.

8. The star contact temperature measurement sensor according to claim 7, wherein: The spring buckle is provided with a double-sawtooth-shaped buckling part, and the clamping groove is a double clamping groove matched with the buckling part.

9. The star contact temperature measurement sensor according to any one of claims 1 to 6, wherein: The mounting position is provided with a limiting structure matched with an outer circumferential wall of an arm of the star contact.

10. A wiper contact comprising a contact arm and a contact finger, the contact finger being mounted on the contact arm, characterized in that: The star contact further comprises a star contact temperature measurement sensor. The star contact temperature measuring sensorapplicationthe star contact temperature measuring sensor according to any one of claims 1 to 9; The first half-ring shell and the second half-ring shell tighten the contact arm when buckled; The temperature probe abuts against the contact finger.

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