A wobbler high temperature alarm device

Abstract

This invention discloses a high-temperature alarm device for a plum blossom contact, relating to the field of electrical component temperature monitoring technology. It includes a contact mounting unit, a temperature monitoring unit, and an alarm unit. The contact mounting unit includes an upper contact mounting assembly disposed at one end of the plum blossom contact base and a lower contact mounting assembly disposed at the other end of the plum blossom contact base. The temperature monitoring unit includes a temperature sensing component disposed on the upper contact mounting assembly. This high-temperature alarm device for a plum blossom contact, by incorporating an alarm unit and a fusible metal that melts under high-temperature conditions, achieves the function of reflecting alarm signals using a refractive element under high-temperature conditions, thereby sending alarm signals to an alarm device for alarm activation. This allows the temperature monitoring module disposed on the plum blossom contact to quickly trigger an alarm when the temperature of the plum blossom contact rises to 95 degrees Celsius without requiring a power supply, ensuring that the switch plum blossom contact does not suffer more serious short-circuit accidents due to prolonged overheating.

Description

Technical Field

[0001] This invention relates to the field of temperature monitoring technology for electrical components, and in particular to a high-temperature alarm device with a plum blossom contact. Background Technology

[0002] High-voltage switchgear, as an important piece of equipment in power plants and substations, plays the role of closing and opening power lines. It is used to transmit and switch power loads, as well as to remove faulty equipment and line segments from the power system, thereby ensuring the safe operation of the power system.

[0003] Currently, the widely used handcart-type switchgear uses stud contacts between the circuit breaker and the switchgear. When the handcart-type switchgear suffers from manufacturing defects, poor installation, or material quality issues, poor contact of the stud contacts can lead to increased contact resistance, resulting in excessively high contact temperatures. Since the temperature of the heated parts cannot be monitored, this can cause fires. Temperature monitoring and alarm devices for the stud contacts of fully enclosed high-voltage switchgear can detect and eliminate potential thermal faults in advance, which is of great significance for the safe and reliable operation of the power system.

[0004] When the battery of the existing temperature sampling module located on the plum blossom contact socket is depleted, the signal conditioning circuit will not be able to receive the true temperature signal. Or, when the signal conditioning circuit is interfered with, it will not be able to accurately reflect the actual temperature signal, and the microcontroller will ultimately be unable to determine the temperature anomaly. Summary of the Invention

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0006] In view of the problems existing in the current high temperature alarm device with plum blossom contact, the present invention is proposed.

[0007] Therefore, the purpose of this invention is to provide a high temperature alarm device for plum blossom contacts, which aims to solve the technical problem that existing temperature sampling modules cannot monitor the temperature of plum blossom contacts when power is lost.

[0008] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a plum blossom contact high temperature alarm device, including a contact mounting unit, a temperature monitoring unit and an alarm unit.

[0009] The contact mounting unit includes an upper contact mounting assembly disposed at one end of the pentagonal contact base and a lower contact mounting assembly disposed at the other end of the pentagonal contact base; the temperature monitoring unit includes a temperature sensing component disposed on the upper contact mounting assembly, an optical fiber adjustment base disposed on the temperature sensing component, an adjustment knob rotatably disposed on the optical fiber adjustment base, and an optical fiber mounting base threadedly connected to the adjustment knob and slidably disposed on the optical fiber adjustment base; and the alarm unit includes a signal transmitting optical fiber assembly disposed on the optical fiber mounting base and a signal receiving optical fiber assembly disposed on the optical fiber mounting base.

[0010] The signal transmitting end of the signal transmitting fiber assembly and the signal receiving end of the signal receiving fiber assembly both face the temperature sensing component.

[0011] Under normal conditions, the temperature sensing component does not have a signal reflection function, and the signal transmitting fiber optic component and the signal receiving fiber optic component cannot receive signals; under high temperature alarm conditions, the temperature sensing component has a signal reflection function, and the signal transmitting fiber optic component and the signal receiving fiber optic component can receive signals.

[0012] As a preferred embodiment of the high temperature alarm device with plum blossom contact described in this invention, the temperature sensing component includes an inner shell disposed on the upper contact mounting assembly, a refractive part disposed on the inner shell, a fusible alloy part disposed on the inner shell and located between the refractive part and the alarm unit, and an outer shell part disposed on the outside of the inner shell.

[0013] As a preferred embodiment of the plum blossom contact high temperature alarm device of the present invention, the refractive part includes a refractive ball mounting seat disposed on the inner shell, a slider disposed on the refractive ball mounting seat and slidably connected to the inner shell and the outer shell, and a refractive ball disposed on the refractive ball mounting seat.

[0014] As a preferred embodiment of the plum blossom contact high temperature alarm device of the present invention, the fusible alloy part includes a fusible alloy ball mounting seat disposed on the inner shell, a slider disposed on the fusible alloy ball mounting seat and slidably connected to the inner shell and the outer shell, a fusible alloy ball disposed on the fusible alloy ball mounting seat with a light-shielding coating on its surface, and a receiving tray disposed on the fusible alloy ball mounting seat between the fusible alloy ball and the alarm unit.

[0015] As a preferred embodiment of the plum blossom contact high temperature alarm device of the present invention, the outer shell includes an outer shell disposed outside the inner shell, and a telescopic blade with one end disposed on the slider one or the slider two and the other end disposed on the outer shell.

[0016] In a preferred embodiment of the plum blossom contact high temperature alarm device of the present invention, the optical fiber mounting base is provided with an external thread that engages with the adjustment knob, and the adjustment knob is provided with a rotating locking block that is rotatably connected to the optical fiber adjustment base.

[0017] As a preferred embodiment of the plum blossom contact high temperature alarm device of the present invention, the inner shell is provided with an internal thread, and the optical fiber adjustment seat is provided with an external thread corresponding to the internal thread.

[0018] In a preferred embodiment of the high-temperature alarm device for the plum blossom contact described in this invention, the signal transmitting fiber optic assembly includes a signal transmitting fiber disposed on the lower contact mounting assembly and the fiber optic mounting base, and a signal transmitting base disposed on the signal transmitting fiber optic assembly; the signal receiving fiber optic assembly includes a signal receiving fiber disposed on the lower contact mounting assembly and the fiber optic mounting base, and a signal receiving base disposed on the signal receiving fiber optic assembly; the alarm unit further includes an alarm device communicatively connected to the signal transmitting fiber optic assembly and the signal receiving fiber optic assembly.

[0019] As a preferred embodiment of the high temperature alarm device for the plum blossom contact described in this invention, the upper contact mounting assembly includes an upper mounting seat disposed at one end of the plum blossom contact seat and having an upper mounting groove corresponding to the plum blossom contact seat, and a mounting pin disposed on the plum blossom contact seat and the upper mounting seat.

[0020] As a preferred embodiment of the high temperature alarm device for the plum blossom contact described in this invention, the lower contact mounting assembly includes a lower mounting base disposed at the other end of the plum blossom contact base, having a lower mounting groove corresponding to the plum blossom contact base and an optical fiber mounting groove corresponding to the alarm unit, and a mounting pin two disposed on the plum blossom contact base and the lower mounting base.

[0021] The beneficial effects of this invention are as follows: By setting up an alarm unit and using a fusible metal that melts in high-temperature environments, the invention achieves the function of reflecting alarm signals using a refractive part under high-temperature conditions, thereby sending alarm signals to the alarm device for alarm activation. It also enables the temperature monitoring module installed on the tulip contact to quickly trigger an alarm when the tulip contact temperature rises to 95 degrees Celsius without requiring a power supply. This allows for prompt manual reduction of the switch load current and transfer of the load, followed by timely inspection to ensure that the switch tulip contact does not experience a more serious short circuit due to prolonged overheating. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram and a partial enlarged view of the installation of the plum blossom contact high temperature alarm device of the present invention.

[0024] Figure 2 This is a schematic diagram of the overall structure of the plum blossom contact high temperature alarm device of the present invention.

[0025] Figure 3 This is a schematic diagram of the temperature sensing component in the high-temperature alarm device with plum blossom contact of the present invention.

[0026] Figure 4 A perspective view of the temperature sensing component in the high-temperature alarm device with plum blossom contact of the present invention. Figure 1 And a magnified view of the details.

[0027] Figure 5 A perspective view of the temperature sensing component in the high-temperature alarm device with plum blossom contact of the present invention. Figure 2 .

[0028] Figure 6 This is a schematic diagram and a partial enlarged view of the temperature monitoring unit and alarm unit in the plum blossom contact high temperature alarm device of the present invention.

[0029] Figure 7 This is a schematic diagram of the upper contact mounting assembly in the high-temperature alarm device with plum blossom contact of the present invention.

[0030] Figure 8 This is a schematic diagram of the lower contact mounting assembly in the high-temperature alarm device with plum blossom contact of the present invention.

[0031] Figure 9 This is a cross-sectional view of the fusible alloy part in the high-temperature alarm device with plum blossom contact of the present invention in the unmelted state.

[0032] Figure 10 This is a schematic diagram of fiber optic signal reception in the molten state of the fusible alloy part in the high-temperature alarm device with plum blossom contact of the present invention. Detailed Implementation

[0033] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0034] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0035] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0036] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0037] Example 1, referring to Figure 1-2 The first embodiment of the present invention provides a high temperature alarm device for a plum blossom contact, which includes a contact mounting unit 100, a temperature monitoring unit 200 and an alarm unit 300.

[0038] The contact mounting unit 100 includes an upper contact mounting assembly 101 disposed at one end of the pentagonal contact seat and a lower contact mounting assembly 102 disposed at the other end of the pentagonal contact seat. The contact mounting unit 100 is used to mount the pentagonal contact seat using the upper contact mounting assembly 101 and the lower contact mounting assembly 102. The temperature monitoring unit 200 includes a temperature sensing component 201 disposed on the upper contact mounting assembly 101. The temperature sensing component 201 can sense the temperature of the pentagonal contact seat and transfer heat to its interior. By adjusting the adjustment knob 203 mounted on the fiber optic adjustment base 202, the relative positions of the fiber optic adjustment base 202 mounted on the temperature sensing component 201 and the fiber optic mounting base 204, which is threadedly connected to the adjustment knob 203 and slidably mounted on the fiber optic adjustment base 202, can be adjusted. This adjusts the position of the alarm unit 300 relative to the temperature sensing component 201, optimizing the temperature sensing alarm function of the alarm device. The alarm unit 300 includes a signal transmitting fiber optic assembly 301 mounted on the fiber optic mounting base 204 and a signal receiving fiber optic assembly 302 mounted on the fiber optic mounting base 204.

[0039] During use, both the signal transmitting end of the signal transmitting fiber optic assembly 301 and the signal receiving end of the signal receiving fiber optic assembly 302 should face the temperature sensing component 201. Under normal conditions, the temperature sensing component 201 does not have a signal reflection function, and the signal transmitting fiber optic assembly 301 and the signal receiving fiber optic assembly 302 cannot receive signals. Under high-temperature alarm conditions, the temperature sensing component 201 has a signal reflection function, and the signal transmitting fiber optic assembly 301 and the signal receiving fiber optic assembly 302 receive signals and send the signals to the alarm device connected to the alarm unit 300. This allows for a rapid alarm when the temperature of the switch's swivel contact rises to 95 degrees Celsius or an abnormal temperature, enabling manual reduction of the switch's load current and transfer of the load for timely inspection, ensuring that the switch's swivel contact does not experience a more serious short circuit due to prolonged overheating.

[0040] Example 2, refer to Figure 1-5 This is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that the temperature sensing component 201 further includes an inner housing 201a disposed on the upper contact mounting assembly 101, a refractive part 201b disposed on the inner housing 201a, a fusible alloy part 201c disposed on the inner housing 201a and located between the refractive part 201b and the alarm unit 300, and an outer housing part 201d disposed outside the inner housing 201a.

[0041] Compared to Embodiment 1, the refractive part 201b further includes a refractive sphere mounting base 201b-1 disposed on the inner housing 201a, a slider 201b-2 disposed on the refractive sphere mounting base 201b-1 and slidably connected to the inner housing 201a and the outer housing 201d, and a refractive sphere 201b-3 disposed on the refractive sphere mounting base 201b-1. Figure 9 As shown, when the temperature of the plum blossom contact seat is within the normal range, the plum blossom contact seat works normally. Due to the obstruction of the fusible alloy part 201c, which is coated with a light-shielding paint, the refractive part 201b cannot refract and merge the signals emitted by the signal transmitting fiber optic assembly 301 and the signal receiving fiber optic assembly 302 in the alarm unit 300 toward the temperature sensing component 201, and therefore will not trigger an alarm.

[0042] Furthermore, the fusible alloy section 201c includes a fusible alloy ball mounting base 201c-1 disposed on the inner housing 201a, a slider 201c-2 disposed on the fusible alloy ball mounting base 201c-1 and slidably connected to the inner housing 201a and the outer housing 201d, a fusible alloy ball 201c-3 disposed on the fusible alloy ball mounting base 201c-1 with a light-shielding coating, and a receiving tray 201c-4 located between the fusible alloy ball 201c-3 and the alarm unit 300, disposed on the fusible alloy ball mounting base 201c-1. By setting the fusible alloy section 201c, the optical fiber and the fusible alloy are perfectly combined. When the temperature of the stylus contact rises to 95 degrees Celsius, the fusible alloy ball 201c-3 installed inside the probe immediately melts. The fusible alloy ball 201c-3 can be made of bismuth-tin alloy. After the fusible alloy ball 201c-3 melts, according to… Figure 10 When the two ends of the optical fiber are connected, the device issues a high temperature alarm for the corresponding sprite contact. This allows for rapid alarm when the temperature of the switch sprite contact rises to 95 degrees Celsius, enabling manual reduction of the switch's load current and load transfer for timely inspection, ensuring that the switch sprite contact does not experience a more serious short circuit due to prolonged overheating.

[0043] Furthermore, the outer casing 201d includes an outer casing 201d-1 disposed outside the inner casing 201a, and a telescopic blade 201d-2 with one end disposed on slider 1 201b-2 or slider 2 201c-2 and the other end disposed on the outer casing 201d-1. By providing the outer casing 201b, when the fusible metal ball and the refracting glass ball are installed via slider 1 201b-2 or slider 2 201c-2, even though the inner casing 201a has sliding grooves for slider 1 201b-2 or slider 2 201c-2, the telescopic blade 201d-2 prevents direct contact between the interior of the temperature sensing component 201 and the contact seat of the perforated contactor, thus preventing leakage of the fusible metal ball from the inner casing 201a. This provides protection for the temperature sensing element inside the temperature sensing component 201.

[0044] During use, both the signal transmitting end of the signal transmitting fiber optic assembly 301 and the signal receiving end of the signal receiving fiber optic assembly 302 are directed towards the temperature sensing component 201. Under normal conditions, the temperature sensing component 201 does not have signal reflection capabilities, and no signal can be received between the signal transmitting fiber optic assembly 301 and the signal receiving fiber optic assembly 302. Under high-temperature alarm conditions, the temperature sensing component 201 has signal reflection capabilities, and the signal transmitting fiber optic assembly 301 and the signal receiving fiber optic assembly 302 receive signals and transmit them to the alarm device connected to the alarm unit 300. This allows for rapid alarm response when the switch's swivel contact temperature rises to 95 degrees Celsius or an abnormal temperature, enabling manual reduction of the switch's load current and load transfer for timely inspection, ensuring that the switch's swivel contact does not experience a more serious short circuit due to prolonged overheating. The complete internal structure of the temperature sensing component 201 can be described as a light-shielding fiber optic temperature sensor. The signal transmitting fiber optic assembly 301 and the signal receiving fiber optic assembly 302 in the alarm unit 300 use low-loss plastic optical fibers with a wavelength of 650nm as the incident and receiving fibers, respectively. The probe located on the signal transmitting fiber optic assembly 301 and the signal receiving fiber optic assembly 302 consists of two optical fibers. A bismuth-tin alloy metal ball, also known as the fusible metal part 201c, and a glass ball, also known as the refractive part 201b, are installed on the probe's detection end face via the temperature sensing component 201. When the metal ball melts, the two fiber end faces are connected by light reflected from the glass ball.

[0045] Preferably, an overly smooth metal sphere surface can easily cause some light to return into the sensing fiber, affecting the probe's consistency. Therefore, the light-blocking surface of the metal sphere is blackened. To prevent the molten metal from affecting the fiber optic cable and temperature probe, the fiber optic cable and temperature probe are fully insulated to meet the insulation level requirements of the switch contact wall. A receiving tray 201c-4 is also provided on the fusible alloy ball mounting base 201c-1 to further prevent the molten metal from affecting the fiber optic cable and temperature probe. The fiber optic cable is fixed to the outer insulating sheath of the switch contact wall, and the temperature probe, i.e., the temperature sensing component 201, is fixed to the contact seat of the perforated contact via the contact seat mounting unit 100 to prevent it from falling off during operation.

[0046] The remaining structure is the same as that in Example 1.

[0047] Example 3, referring to Figure 1-10 This is the third embodiment of the present invention, which differs from the second embodiment in that: the optical fiber mounting base 204 is provided with an external thread that engages with the adjustment knob 203, and the adjustment knob 203 is provided with a rotating locking block 203a that is rotatably connected to the optical fiber adjustment base 202. The rotating locking block 203a is provided to prevent the adjustment knob 203 from falling off the optical fiber adjustment base 202.

[0048] Compared to Embodiment 2, the inner housing 201a is further provided with an internal thread 201a-1, and the fiber optic adjustment seat 202 is provided with an external thread 202a corresponding to the internal thread 201a-1. This facilitates the detachable installation of the fiber optic adjustment seat 202 on the inner housing 201a, thereby facilitating the replacement of the fusible metal ball after an alarm is triggered, and enabling the repeated use of this alarm device.

[0049] Furthermore, the signal transmitting fiber optic assembly 301 includes a signal transmitting fiber 301a disposed on the lower contact mounting assembly 102 and the fiber optic mounting base 204, and a signal transmitting base 301b disposed on the signal transmitting fiber 301a; the signal receiving fiber optic assembly 302 includes a signal receiving fiber 302a disposed on the lower contact mounting assembly 102 and the fiber optic mounting base 204, and a signal receiving base 302b disposed on the signal receiving fiber 302a; the alarm unit 300 also includes an alarm device communicatively connected to the signal transmitting fiber 301a and the signal receiving fiber 302a. The alarm device is a common alarm device in the prior art, equipped with a microcontroller and signal conditioning circuit, capable of identifying and analyzing the alarm signal emitted by the alarm unit 300 and triggering an alarm.

[0050] Furthermore, the upper contact mounting assembly 101 includes an upper mounting seat 101a disposed at one end of the pentagonal contact seat and having an upper mounting groove 101a-1 corresponding to the pentagonal contact seat, and a mounting pin 101b disposed on the pentagonal contact seat and the upper mounting seat 101a. The temperature sensing component 201, the fiber optic adjustment seat 202, the adjustment knob 203, and the fiber optic mounting seat 204 are mounted on the pentagonal contact seat via the upper contact mounting assembly 101. The upper mounting groove 101a-1 is provided to align the upper contact mounting assembly 101 with the pentagonal contact seat, and a mounting through hole is provided on the pentagonal contact seat to facilitate the installation of the mounting pin 101b.

[0051] Furthermore, the lower contact mounting assembly 102 includes a lower mounting base 102a located at the other end of the pentagonal contact base, having a lower mounting groove 102a-1 corresponding to the pentagonal contact base and an optical fiber mounting groove 102a-2 corresponding to the alarm unit 300, and a mounting pin 102b located on the pentagonal contact base and the lower mounting base 102a. The temperature sensing component 201, the optical fiber adjustment base 202, the adjustment knob 203, and the optical fiber mounting base 204 are mounted on the pentagonal contact base via the lower contact mounting assembly 102. The lower mounting groove 102a-1 aligns the lower contact mounting assembly 102 with the pentagonal contact base, and a mounting through hole is provided on the pentagonal contact base for easy installation of the mounting pin 102b. The optical fiber mounting groove 102a-2 facilitates the fixing of the two sets of optical fibers in the alarm unit 300 onto the lower contact mounting assembly 102.

[0052] The remaining structure is the same as that in Example 2.

[0053] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0054] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the currently considered best mode for carrying out the invention, or those features that are not relevant to implementing the invention) may be omitted.

[0055] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A high-temperature alarm device with a plum blossom contact, characterized in that: include, The contact mounting unit (100) includes an upper contact mounting assembly (101) disposed at one end of the pentagonal contact seat and a lower contact mounting assembly (102) disposed at the other end of the pentagonal contact seat. The temperature monitoring unit (200) includes a temperature sensing component (201) disposed on the upper contact mounting assembly (101), an optical fiber adjustment base (202) disposed on the temperature sensing component (201), an adjustment knob (203) rotatably disposed on the optical fiber adjustment base (202), and an optical fiber mounting base (204) threadedly connected to the adjustment knob (203) and slidably disposed on the optical fiber adjustment base (202); and, The alarm unit (300) includes a signal transmitting fiber optic assembly (301) disposed on the fiber optic mounting base (204) and a signal receiving fiber optic assembly (302) disposed on the fiber optic mounting base (204). The signal transmitting end of the signal transmitting fiber optic assembly (301) and the signal receiving end of the signal receiving fiber optic assembly (302) are both facing the temperature sensing assembly (201). Under normal conditions, the temperature sensing component (201) does not have a signal reflection function, and the signal transmitting fiber optic component (301) and the signal receiving fiber optic component (302) cannot receive signals; under high temperature alarm conditions, the temperature sensing component (201) has a signal reflection function, and the signal transmitting fiber optic component (301) and the signal receiving fiber optic component (302) can receive signals. The temperature sensing component (201) includes an inner housing (201a) disposed on the upper contact mounting component (101), a refractive part (201b) disposed on the inner housing (201a), a fusible alloy part (201c) disposed on the inner housing (201a) and located between the refractive part (201b) and the alarm unit (300), and an outer housing part (201d) disposed outside the inner housing (201a). The refractive part (201b) includes a refractive sphere mounting base (201b-1) disposed on the inner shell (201a), a slider (201b-2) disposed on the refractive sphere mounting base (201b-1) and slidably connected to the inner shell (201a) and the outer shell part (201d), and a refractive sphere (201b-3) disposed on the refractive sphere mounting base (201b-1). The fusible alloy part (201c) includes a fusible alloy ball mounting base (201c-1) disposed on the inner shell (201a), a slider two (201c-2) disposed on the fusible alloy ball mounting base (201c-1) and slidably connected to the inner shell (201a) and the outer shell part (201d), a fusible alloy ball (201c-3) disposed on the fusible alloy ball mounting base (201c-1) with a light-blocking coating on its surface, and a receiving tray disposed on the fusible alloy ball mounting base (201c-1) between the fusible alloy ball (201c-3) and the alarm unit (300).

2. The high-temperature alarm device with plum blossom contact as described in claim 1, characterized in that: The outer shell portion (201d) includes an outer shell (201d-1) disposed outside the inner shell (201a), and a telescopic blade (201d-2) with one end disposed on the first slider (201b-2) or the second slider (201c-2) and the other end disposed on the outer shell portion (201d-1).

3. The high-temperature alarm device with plum blossom contact as described in claim 1 or 2, characterized in that: The fiber optic mounting base (204) is provided with an external thread that engages with the adjustment knob (203), and the adjustment knob (203) is provided with a rotating locking block (203a) that is rotatably connected to the fiber optic adjustment base (202).

4. The high-temperature alarm device with plum blossom contact as described in claim 3, characterized in that: The inner shell (201a) is provided with an internal thread (201a-1), and the fiber optic adjustment seat (202) is provided with an external thread (202a) corresponding to the internal thread (201a-1).

5. The high-temperature alarm device with plum blossom contact as described in claim 4, characterized in that: The signal transmitting fiber assembly (301) includes a signal transmitting fiber (301a) disposed on the lower contact mounting assembly (102) and the fiber mounting base (204), and a signal transmitting base (301b) disposed on the signal transmitting fiber (301a). The signal receiving fiber optic assembly (302) includes a signal receiving fiber (302a) disposed on the lower contact mounting assembly (102) and the fiber optic mounting base (204), and a signal receiving base (302b) disposed on the signal receiving fiber (302a). The alarm unit (300) also includes an alarm device that is communicatively connected to the signal transmitting optical fiber (301a) and the signal receiving optical fiber (302a).

6. The high-temperature alarm device with plum blossom contact as described in claim 5, characterized in that: The upper contact mounting assembly (101) includes an upper mounting seat (101a) disposed at one end of the pentagonal contact seat and having an upper mounting groove (101a-1) corresponding to the pentagonal contact seat, and a mounting pin (101b) disposed on the pentagonal contact seat and the upper mounting seat (101a).

7. The high-temperature alarm device with plum blossom contact as described in claim 6, characterized in that: The lower contact mounting assembly (102) includes a lower mounting base (102a) disposed at the other end of the pentagonal contact base, having a lower mounting groove (102a-1) corresponding to the pentagonal contact base and an optical fiber mounting groove (102a-2) corresponding to the alarm unit (300), and a mounting pin two (102b) disposed on the pentagonal contact base and the lower mounting base (102a).

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