Switch cabinet and surface acoustic wave temperature measuring device

Abstract

A switch cabinet and surface acoustic wave temperature measuring device provided by the present invention comprises a cabinet body, a circuit breaker main cabinet and a heat dissipation base, the upper end of the front side of the cabinet body is provided with a group of control panels used for controlling related functions of the switch cabinet, and the circuit breaker main cabinet comprises a cabinet door and a contact assembly. The inner side of the cabinet door is provided with a group of cavities which are used for placing the circuit breaker and providing an installation environment for the circuit breaker, and the middle position of each cavity is provided with a group of inner frame bodies which are used for providing supporting and fixing effects for the side frame bodies. Compared with the prior art, the device has the beneficial effects that the inner environment temperature cavity and the temperature measuring component are used for cooperatively optimizing heat dissipation and temperature monitoring, the equipment operation stability is improved, the spring contact finger and the outer positioning frame are designed to enhance the conductive reliability and reduce the contact resistance, the isolation ring supporting structure ensures the stability of an annular conductive path, the fault rate is reduced, the overall integration degree is high, and the reliability is high. Maintenance is convenient, the service life of equipment is prolonged, and efficient and safe power control is achieved.

Description

Technical Field

[0001] This invention relates to a switch cabinet and a surface acoustic wave temperature measuring device, belonging to the field of switch cabinet temperature measuring technology. Background Technology

[0002] The core problem with existing switchgear temperature measurement is insufficient accuracy, stemming from multiple factors: traditional temperature measurement methods often employ single contact sensors, which are susceptible to electromagnetic interference within the switchgear and have limited installation locations, making it difficult to fully cover key heat-generating components like the L-shaped contacts. Furthermore, changes in contact resistance and contact deformation during operation can lead to localized temperature anomalies, and traditional devices lack specific temperature adaptation designs, failing to accurately capture these changes. Additionally, traditional sensor installations lack precise positioning and foolproof structures, making them prone to misalignment due to human error, further impacting measurement accuracy. Conventional solutions include increasing the number of sensors or manually calibrating their positions. However, adding sensors leads to cluttered wiring, increased costs, and conflicting data from multiple sensors, hindering unified and accurate analysis. Manual calibration relies on experience, resulting in significant errors, and frequent disassembly and reassembly can compromise equipment sealing, exacerbating safety hazards. These methods fail to fundamentally solve the problem of insufficient temperature measurement accuracy and compromise the safe operation of the switchgear. Therefore, a switchgear and surface acoustic wave (SAW) temperature measurement device is urgently needed to address these issues. Summary of the Invention

[0003] To address the shortcomings of existing technologies, the present invention aims to provide a switch cabinet and a surface acoustic wave temperature measurement device, comprising: a cabinet, a circuit breaker main cabinet, and a heat dissipation base, in order to solve the problems mentioned in the background art.

[0004] The technical solution of the present invention is implemented as follows: a switch cabinet and a surface acoustic wave temperature measuring device, comprising: a cabinet, a circuit breaker main cabinet and a heat dissipation base, wherein a control panel for controlling the relevant functions of the switch cabinet is provided at the upper front end of the cabinet, the control panel is integrated with the cabinet, an emergency switch for controlling the emergency power cut-off of the circuit is provided at the right front end of the cabinet, a circuit breaker main cabinet for switching the circuit and providing circuit protection is provided inside the middle position of the cabinet, and a heat dissipation base for providing heat dissipation to the lower end of the cabinet; The circuit breaker main cabinet includes a cabinet door, an inner frame, and a contact assembly. The inner side of the cabinet door is provided with a cavity for placing the circuit breaker and providing its installation environment. In the middle of the cavity, there is a set of inner frames for providing support and fixation for the side frames. On the front side of the inner frame, there is a set of side frames for providing support and fixation for several sets of insulating covers. The right side of the side frame has a right-angled trapezoidal cross-section and is fitted into the lower outer side of the inner frame and connected and fixed to it by bolts.

[0005] In a preferred embodiment, the lower ends of the inner frame and the side frame are provided with a set of wire holders for collecting and protecting the internal wiring harnesses of the circuit breaker equipment. The wire holders have a hollow structure inside and a wire cavity for wiring. The front and rear ends of the right side of the wire holders are respectively provided with a set of conduits for leading out the circuit breaker-related wiring harnesses. The inner side of the conduits is provided with a cut-resistant steel wire inner layer and an inner insulating wire layer that provides an insulating transmission environment. The upper front end of the side frame is provided with three sets of insulating covers for providing insulation. The insulating covers include an inner layer, a middle layer, and an outer layer. The inner layer and the outer layer are both insulating layers made of insulating rubber material.

[0006] In a preferred embodiment, the middle layer is an inner support ring layer that enhances the support strength between the inner and outer layers. This inner support ring layer is constructed by welding together several sets of annular support rings and is made of stainless steel. Each set of insulating covers contains a set of poles for connecting two sets of studded contacts on the same horizontal axis. The upper end of each pole has a set of contact arms for conducting electrical energy. The outer side of the front end of each contact arm has a set of external insulating frames for maintaining the contact arm's positioning and providing independent insulation. The outer insulating frames are covered with insulating material. The front side of each contact arm has a set of contact assemblies for separating and conducting current. The outer side of each contact assembly has a set of external insulating protection. The outer insulating sleeve is made of the same insulating material as the inner insulating frame. First, the equipment is started via the control panel to power on the circuit breaker main cabinet. Then, the cabinet door is opened, and the supporting structure formed by the inner and side frames ensures the insulating cover firmly covers the poles and contact arms, providing a safety barrier for subsequent operations. The contact arms fit tightly with the outer insulating frame, effectively isolating the risk of current leakage. Simultaneously, the outer insulating sleeve wraps around the contact assembly, further preventing short circuits. The conduit extends from the right side of the connector, and its cut-resistant steel wire inner layer and inner insulating layer provide double protection for the internal wiring harness, ensuring the cable is not damaged during the outgoing process. In case of circuit abnormalities, the emergency switch can quickly cut off the power supply, ensuring system safety. A surface acoustic wave temperature measurement device monitors the contact assembly temperature in real time, using a precise early warning mechanism to detect potential overheating risks in advance.

[0007] In a preferred embodiment, the contact assembly includes an inner ring temperature cavity and a temperature measuring component. The outer side of the contact assembly is provided with an inner ring temperature cavity for diffusing and cooling the temperature released by the plum blossom contact. The middle position of the inner ring temperature cavity is provided with a set of plum blossom contacts for conducting and separating the current. The outer side of the middle position of the plum blossom contacts is provided with a set of isolation rings for supporting and fixing the contact pieces to form an annular conductive path. The plum blossom contact is an annular metal component, and several sets of contact pieces are fixed to its internal support frame by mechanical assembly and arranged in an annular structure.

[0008] In a preferred embodiment, the inner side of the inner ring wall of the plum blossom contact is provided with a set of contacts for connection with external conductive components. The outer side of each contact is provided with a set of annular grooves, in which spring-loaded contact fingers are embedded. A tension spring provides preload force to the contacts. The tension spring is a φ2mm stainless steel tension spring with a preload range of 5-8N. Each set of contacts has an outer positioning bracket to limit its outward expansion deformation. The temperature measuring component is fitted into the inner side of the isolation ring. Several sets of plum blossom contacts are provided, with every two sets of vertically arranged plum blossom contacts forming a disconnect structure. A set of contact fingers is located at the center of the front side of each set of plum blossom contacts for measuring... The temperature sensing component for the plum blossom contact's operating temperature change first activates the circuit breaker main cabinet via the control panel, completing the power-on operation. Subsequently, the plum blossom contact forms a ring-shaped conductive path under the support of the isolation ring. The contact piece is mechanically fixed to the internal support frame to ensure stable current conduction. The annular groove on the inner side of the contact embeds the spring contact finger, which is provided with preload by the tension spring to enhance contact reliability. The outer positioning frame restricts the outward expansion deformation of the contact piece to maintain structural stability. The inner ring temperature cavity surrounds the plum blossom contact to diffuse and cool the heat released by the contact, avoiding local overheating. The temperature sensing component is fitted and installed with the isolation ring to monitor the operating temperature change of the contact in real time and provide early warning of overheating risk through a surface acoustic wave temperature measuring device.

[0009] In a preferred embodiment, the temperature measuring component includes a rear housing and positioning clips. The rear housing is a cylindrical structure. The front side of the rear housing is provided with a set of sealing liners for fixing mounting base one and mounting base two while maintaining a sealed connection between the rear housing and mounting base one and mounting base two. The sealing liners are integral with the rear housing. The interior of the rear housing is a hollow structure. The inner side of the rear housing is provided with a set of cavities for interlocking with the rear support spring. The front side of the cavity is considered to be a ring structure. The middle position of the cavity is provided with a set of collector antenna one for summarizing and transmitting several sets of temperature collector data. The outer front end of the collector antenna one is provided with several sets of positioning clips for positioning and connecting with collector antenna two.

[0010] In a preferred embodiment, the positioning insert penetrates the middle of the rear support spring and the middle of the support plate of the first collector antenna, and is fitted and connected with the second collector antenna. The positioning insert has an arc-shaped concave structure. When the first collector antenna is connected to the second collector antenna, each set of positioning inserts has a set of positioning clips for maintaining the fitting and locking. Each set of positioning clips has an arc-shaped elliptical structure, and each set of positioning clips has a set of inner support springs for supporting its movement. The front side of the rear support spring has a set of support plates for maintaining its positioning support. The support plates are connected and fixed to the rear support spring. The front side of the support plates has a set of inner grooves for fitting with the inner ring. The front cross-section of the inner groove is an annular structure. The upper and lower sides of the inner groove each have a set of... The positioning connection includes a foolproof base. The inner ring has a set of foolproof interfaces on its upper and lower sides for corresponding engagement with the foolproof base. First, the rear housing is sealed to mounting base one and mounting base two via a sealing liner, ensuring the stability of the hollow structure inside the rear housing. Then, the temperature acquisition unit and temperature sensor are embedded inside the rear housing. The acquisition unit antenna one is engaged with the acquisition unit antenna two via a positioning clip. The positioning clip is locked by the arc-edged elliptical structure and the inner support spring, ensuring stable signal transmission. The rear support spring supports the support plate. The inner groove of the support plate and the inner ring are precisely engaged with the foolproof base via the foolproof interface, preventing installation errors. The front housing cooperates with the front support spring to form a stable support, protecting the internal components. The temperature sensor collects the temperature data of the contact assembly in real time, which is then collected and transmitted to the surface acoustic wave temperature measurement device via the acquisition antenna for accurate monitoring.

[0011] In a preferred embodiment, the front side of the embedded ring is provided with a set of mounting seats one and a set of mounting seats two. Mounting seats one and two are connected and fixed by bolts passing through the embedded ring. Mounting seats one and two have the same structure, both being a ring structure, with several sets of mounting grooves evenly distributed on the outer side. The number of mounting grooves is the same as the number of contact pieces inside the perforated contact, and the position of each set of mounting grooves corresponds to the position of the contact piece. Mounting seat one contains several sets of temperature acquisition devices for wireless data transmission with the temperature sensor, collecting temperature data and visualizing the linear relationship between temperature and surface acoustic waves through a built-in data model. The linear relationship in surface acoustic waves is T = k × surface acoustic wave frequency change Δf + b, where k and b are calibration coefficients with values ​​ranging from 0.02-0.05℃ / Hz and 20-30℃, respectively. The visualization module is connected to an LCD display screen via an external mounting port and transmits temperature data using the RS485 protocol. Several sets of temperature acquisition devices are arranged in a ring structure. The temperature acquisition devices are SAW surface acoustic wave gas sensors. The temperature acquisition devices adopt the passive transmission characteristics of surface acoustic waves, requiring no power supply and avoiding electromagnetic radiation interference. The mounting base II contains several sets of temperature sensors for contact temperature measurement and transmission of surface acoustic waves.

[0012] In a preferred embodiment, a set of second collector antennas for transmitting temperature data is provided at the middle position inside the mounting base one and mounting base two. The first collector antenna and the second collector antenna are electrically connected and simultaneously connected to several sets of temperature collectors. A set of front support springs for limiting and supporting the position of the second collector antenna is provided on its front side. The front support springs are interlocked and limited inside the front housing. The rear side of the front housing is connected and fixed to the front side of the mounting base two. A set of external mounting ports for connecting to external devices is provided at the middle position of the front side of the front housing and the middle position of the rear side of the rear housing, respectively. The inner side of the external mounting ports has internal threads for installation. An inner support frame for positioning the second collector antenna is provided inside the front housing. The operator first connects and fixes the embedded ring to mounting base one and mounting base two with bolts, ensuring that the mounting groove and the contact piece of the plum blossom contact are precisely aligned. Then, the temperature acquisition device is embedded in the annular groove of mounting base one. Its SAW surface acoustic wave technology is electrically connected to acquisition antenna one through acquisition antenna two to realize wireless transmission of temperature data. The temperature sensor is embedded in mounting base two and transmits surface acoustic wave signals synchronously with acquisition antenna two through contact temperature measurement. The front support spring fits and limits the front housing to ensure the stability of acquisition antenna two. The front housing and rear housing are connected to external equipment through the internal thread of the external mounting port. The inner support frame fixes acquisition antenna two to prevent displacement. The temperature data is analyzed by the built-in model to show the linear relationship between surface acoustic wave and temperature, and the contact temperature change is visualized.

[0013] After adopting the above technical solution, the beneficial effects of the present invention are: by using the inner ring temperature cavity and temperature measuring components to optimize heat dissipation and temperature monitoring, the stability of equipment operation is improved. The design of spring contact fingers and outer positioning frame enhances conductivity reliability and reduces contact resistance. The isolation ring support structure ensures the stability of the ring conductive path and reduces the failure rate. The overall integration is high, which facilitates maintenance, extends the equipment life, and achieves efficient and safe power control. The sealed inner liner and foolproof design improve installation reliability and reduce human error; the positioning clip and support structure ensure stable signal transmission and enhance monitoring accuracy; the multi-layer protection design extends component life and reduces maintenance costs; the overall structure is compact and highly integrated, which facilitates daily management and troubleshooting, and achieves efficient and safe temperature monitoring. The ring structure and corresponding slot design of mounting base one and mounting base two improve installation accuracy and temperature measurement consistency. SAW surface acoustic wave technology enables non-contact temperature measurement, avoiding interference with circuits. Wireless data transmission simplifies wiring and reduces maintenance difficulty. Dual sensors work together to enhance data reliability. The overall structure is compact and highly integrated, facilitating rapid installation and troubleshooting, and significantly improving the accuracy and safety of switchgear temperature monitoring. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. 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.

[0015] Figure 1 This is a schematic diagram of the structure of a switch cabinet and a surface acoustic wave temperature measuring device according to the present invention; Figure 2 This is a top view of the right front side of the main cabinet of the circuit breaker of the switch cabinet and surface acoustic wave temperature measuring device of the present invention. Figure 3 This is a top view of the left rear side of the main cabinet of the circuit breaker of the switch cabinet and surface acoustic wave temperature measuring device of the present invention. Figure 4 for Figure 2 Enlarged schematic diagram of the structure at point A in the middle; Figure 5 This is a top view of the left oblique front side of the temperature measuring component in a switch cabinet and surface acoustic wave temperature measuring device of the present invention. Figure 6 This is a right-side exploded view of the temperature measuring component in a switch cabinet and surface acoustic wave temperature measuring device of the present invention. Figure 7This is a schematic cross-sectional view of the temperature measuring component in a switch cabinet and surface acoustic wave temperature measuring device of the present invention. In the diagram: 1-cabinet, 2-control panel, 3-emergency switch, 4-circuit breaker main cabinet, 5-heat dissipation base; 41-Inner frame, 42-Side frame, 43-Line holder, 44-Conductor tube, 45-Insulating cover, 46-Contact arm, 47-Outer insulating frame, 48-Outer isolation sleeve, 49-Contact assembly; 49a-Inner ring temperature cavity, 49b-Isolation ring, 49c-Outer positioning frame, 49d-Plum blossom contact, 49e-Temperature measuring component; e1-Rear housing, e2-Sealed inner liner, e3-Mounting base one, e4-Mounting base two, e5-Temperature collector, e6-Temperature sensor, e7-Front housing, e8-Inner support frame, e9-External mounting port, e10-Cavity, e11-Collector antenna one, e12-Positioning insert, e13-Rear support spring, e14-Support plate, e15-Inner groove, e16-Inner ring, e17-Footproof interface, e18-Collector antenna two, e19-Front support spring, e20-Positioning clip. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] Please see Figures 1-7 As a first embodiment of the present invention, a switch cabinet and a surface acoustic wave temperature measuring device include: a cabinet 1, a circuit breaker main cabinet 4 and a heat dissipation base 5. A set of control panel 2 for controlling the relevant functions of the switch cabinet is provided at the upper front side of the cabinet 1. The control panel 2 is integrated with the cabinet 1. An emergency switch 3 for controlling the emergency power cut-off of the circuit is provided at the right front side of the cabinet 1. A set of circuit breaker main cabinet 4 for switching the circuit and providing circuit protection is provided inside the middle position of the cabinet 1. A set of heat dissipation base 5 for providing heat dissipation to the lower end of the cabinet 1 is provided. The circuit breaker main cabinet 4 includes a cabinet door, an inner frame 41, and a contact assembly 49. The inner side of the cabinet door is provided with a cavity for placing the circuit breaker and providing its installation environment. In the middle of the cavity, there is an inner frame 41 for providing support and fixation for the side frame 42. On the front side of the inner frame 41, there is a side frame 42 for providing support and fixation for several sets of insulating covers 45. The right side of the side frame 42 has a right-angled trapezoidal cross-section and is fitted and installed with the lower outer side of the inner frame 41 and is connected and fixed to it by bolts.

[0018] Please see Figures 1-3 As a second embodiment of the present invention: based on the description in the first embodiment, the lower ends of the inner frame 41 and the side frame 42 are provided with a set of wire holders 43 for collecting and protecting the internal wiring harness of the circuit breaker equipment. The wire holder 43 has a hollow structure inside and a wire cavity for wiring. The front and rear ends of the right side of the wire holder 43 are respectively provided with a set of conductor tubes 44 for leading out the relevant wiring harness of the circuit breaker. The inner side of the conductor tube 44 is provided with a cut-resistant steel wire inner layer and an inner insulating wire layer that provides an insulating transmission environment. The upper front end of the side frame 42 is provided with three sets of insulating covers 45 for providing insulation effect. The insulating cover 45 includes an inner layer, a middle layer and an outer layer. The inner layer and the outer layer are both insulating layers made of insulating rubber material.

[0019] The middle layer is an inner support ring layer that improves the support strength between the inner and outer layers. The inner support ring layer is composed of several sets of annular support rings welded together. The inner support ring layer is made of stainless steel. Each set of insulating covers 45 has a set of poles inside for connecting two sets of plum blossom contacts 49d on the same horizontal axis. The upper end of the pole has a set of contact arms 46 for conducting electrical energy. The front side of the contact arm 46 has a set of outer insulating frames 47 for maintaining the position of the contact arm 46 and for independent insulation. The outer insulating frame 47 is covered with insulating material. The front side of the contact arm 46 has a set of contact assemblies 49 for conducting and separating current. The outer side of the contact assembly 49 has a set of outer isolation sleeves 48 for providing external insulation protection. The outer isolation sleeves 48 and the inner insulating material of the outer insulating frame 47 are the same. First, the equipment is started via control panel 2 to power on the main cabinet 4 of the circuit breaker. Then, the cabinet door is opened. The supporting structure formed by the inner frame 41 and side frame 42 ensures that the insulating cover 45 firmly covers the pole and contact arm 46, providing a safety barrier for subsequent operations. The contact arm 46 fits tightly with the outer insulating frame 47, effectively isolating the risk of current leakage. Simultaneously, the outer insulating sleeve 48 wraps around the contact assembly 49, further preventing short circuits. The conductor conduit 44 extends from the right side of the connector 43. Its cut-resistant steel wire inner layer and inner insulating wire layer provide double protection for the internal wiring harness, ensuring that the cable is not damaged during the outgoing process. When a circuit abnormality occurs, the emergency switch 3 can quickly cut off the power supply, ensuring system safety. The surface acoustic wave temperature measurement device monitors the temperature of the contact assembly 49 in real time, detecting potential overheating risks in advance through a precise early warning mechanism.

[0020] Please see Figures 1-4As a third embodiment of the present invention: based on the description in the first embodiment, the contact assembly 49 includes an inner ring temperature cavity 49a and a temperature measuring component 49e. The outer side of the contact assembly 49 is provided with an inner ring temperature cavity 49a for diffusing and cooling the temperature released by the plum blossom contact 49d. The middle position of the inner ring temperature cavity 49a is provided with a set of plum blossom contacts 49d for conducting and separating the current. The outer side of the middle position of the plum blossom contact 49d is provided with a set of isolation rings 49b for supporting and fixing the contact piece to form an annular conductive path. The plum blossom contact 49d is an annular metal component and is fixed to its internal support frame by a mechanical assembly of several sets of contact pieces, and is arranged in an annular structure.

[0021] Each of the inner ring walls of the plum blossom contact 49d has a set of contacts for connecting with external conductive components. The outer side of the contacts has a set of annular grooves with spring contact fingers embedded in them. The springs provide a pre-tightening force to the contacts. The springs are φ2mm stainless steel springs with a pre-tightening force range of 5-8N. Each set of contacts has an outer positioning frame 49c for maintaining its outward expansion deformation limit. The temperature measuring component 49e is fitted into the isolation ring 49b. There are several sets of plum blossom contacts 49d. Every two sets of vertically arranged plum blossom contacts 49d form a disconnection structure. Each set of plum blossom contacts 49d has a set of temperature measuring components 49e for measuring the operating temperature change of the plum blossom contacts 49d at the middle of the front side. First, the circuit breaker main cabinet 4 is started via control panel 2 to complete the power-on operation. Then, the plum blossom contact 49d forms an annular conductive path under the support of the isolation ring 49b. The contact piece is mechanically fixed to the internal support frame to ensure stable current conduction. The annular groove on the inner side of the contact is embedded with the spring contact finger, and the tension spring provides pre-tightening force to enhance contact reliability. The outer positioning frame 49c restricts the outward expansion deformation of the contact piece to maintain structural stability. The inner annular temperature cavity 49a surrounds the plum blossom contact 49d to diffuse and cool the heat released by the contact, avoiding local overheating. The temperature measuring component 49e is fitted and installed with the isolation ring 49b to monitor the change in the operating temperature of the contact in real time and to provide early warning of overheating risk through the surface acoustic wave temperature measuring device.

[0022] Please see Figures 1-7As a fourth embodiment of the present invention: based on the description in the second and third embodiments, the temperature measuring component 49e includes a rear housing e1 and a positioning clip e20. The rear housing e1 is a cylindrical structure. The front side of the rear housing e1 is provided with a set of sealing liners e2 for fixing mounting base one e3 and mounting base two e4 and keeping the rear housing e1 sealed to the mounting base one e3 and mounting base two e4. The sealing liners e2 and the rear housing e1 are an integral structure. The interior of the rear housing e1 is a hollow structure. The inner side of the rear housing e1 is provided with a set of cavities e10 for interlocking with the rear support spring e13. The front side of the cavity e10 is considered to be a ring structure. The middle position of the cavity e10 is provided with a set of collector antenna one e11 for summarizing and transmitting data from several sets of temperature collectors e5. The outer side of the front end of the collector antenna one e11 is provided with several sets of positioning clips e12 for positioning and connecting with the collector antenna two e18.

[0023] The positioning insert e12 passes through the middle of the rear support spring e13 and the middle of the support plate e14 of the first data collector antenna e11, and is fitted and connected with the second data collector antenna e18. The positioning insert e12 is a concave arc-shaped structure. When the first data collector antenna e11 is connected to the second data collector antenna e18, each set of positioning inserts e12 has a set of positioning latches e20 inside to maintain the fitting and locking. Each set of positioning latches e20 is an elliptical structure with an arc edge, and each set of positioning latches e20 has a set of positioning latches inside to support its movement. The inner support spring, the rear support spring e13 has a set of support discs e14 on the front side for maintaining its positioning support, the support discs e14 are connected and fixed to the rear support spring e13, the support discs e14 have a set of inner grooves e15 on the front side for engaging with the inner ring e16, the inner grooves e15 have a ring-shaped cross-section on the front side, the inner grooves e15 have a set of anti-foolproof seats on the upper and lower sides for positioning connection, and the inner rings e16 have a set of anti-foolproof interfaces e17 on the upper and lower sides for engaging with the anti-foolproof seats. First, the rear housing e1 is sealed and connected to mounting base one e3 and mounting base two e4 through the sealing liner e2, ensuring the stability of the hollow structure inside the rear housing e1. Then, the temperature acquisition unit e5 and the temperature sensor e6 are embedded inside the rear housing e1. The acquisition unit antenna one e11 is fitted and connected to the acquisition unit antenna two e18 through the positioning insert e12. The positioning clip e20 is locked by the arc-edge elliptical structure and the internal support spring to ensure stable signal transmission. The rear support spring e13 supports the support plate e14. The groove e15 and the inner ring e16 of the support plate e14 are precisely fitted with the foolproof interface e17 and the foolproof seat to avoid installation errors. The front housing e7 cooperates with the front support spring e19 to form a stable support and protect the internal components. The temperature sensor e6 collects the temperature data of the contact assembly 49 in real time and transmits it to the surface acoustic wave temperature measurement device through the acquisition unit antenna to achieve accurate monitoring.

[0024] Please see Figures 1-7 As a fifth embodiment of the present invention: Based on the description in the fourth embodiment, a set of mounting seats e3 and a set of mounting seats e4 are provided on the front side of the embedded ring e16. The mounting seats e3 and e4 are connected and fixed by bolts through the embedded ring e16. The mounting seats e3 and e4 have the same structure, both being a ring structure, with several sets of mounting grooves evenly distributed on the outer side. The number of mounting grooves is the same as the number of contact pieces inside the 49d of the plum blossom contact, and the position of each set of mounting grooves corresponds to the position of the contact piece. The mounting seat e3 has several sets of grooves inside for wireless data transmission communication with the temperature sensor e6, collecting temperature data, and analyzing the linear relationship between temperature and surface acoustic wave through a built-in data model, and converting the temperature into a signal. The temperature acquisition unit e5 is visualized, where the linear relationship of temperature T in surface acoustic wave (SAW) is T = k × SAW frequency change Δf + b, and k and b are calibration coefficients with values ​​ranging from 0.02-0.05℃ / Hz and 20-30℃, respectively. The visualization module is connected to an LCD display screen via an external mounting port and transmits temperature data using the RS485 protocol. Several groups of temperature acquisition units e5 are arranged in a ring structure. The temperature acquisition unit e5 is a SAW gas sensor and adopts the passive transmission characteristics of SAW, requiring no power supply and avoiding electromagnetic radiation interference. The mounting base e4 contains several groups of temperature sensors e6 for contact temperature measurement and transmission of SAW.

[0025] Inside mounting base one e3 and mounting base two e4, there is a set of collector antenna two e18 for transmitting data from temperature collector e5. Collector antenna one e11 is electrically connected to collector antenna two e18 and is also connected to several sets of temperature collectors e5. A set of front support springs e19 is provided on the front side of collector antenna two e18 to limit its position. The front support springs e19 are interlocked and limited inside the front housing e7. The rear side of the front housing e7 is connected and fixed to the front side of mounting base two e4. At the middle of the front side of the front housing e7 and the middle of the rear side of the rear housing e1, there are respectively a set of external mounting ports e9 for connecting with external equipment. The inner side of the external mounting ports e9 is provided with internal threads for installation. Inside the front housing e7, there is a set of internal support frames e8 for positioning collector antenna two e18. The operator first connects and fixes the embedded ring e16 to mounting base one e3 and mounting base two e4 with bolts, ensuring that the mounting groove and the position of the 49d contact piece of the plum blossom contact are precisely aligned. Then, the temperature acquisition device e5 is embedded in the annular groove of mounting base one e3. Its SAW surface acoustic wave technology is electrically connected to acquisition antenna one e11 through acquisition antenna two e18 to realize wireless transmission of temperature data. The temperature sensor e6 is embedded in mounting base two e4 and transmits surface acoustic wave signals synchronously with acquisition antenna two e18 through contact temperature measurement. The front support spring e19 is engaged and limited with the front housing e7 to ensure the stable position of acquisition antenna two e18. The front housing e7 and the rear housing e1 are connected to external equipment through the internal thread of the external mounting port e9. The inner support frame e8 fixes acquisition antenna two e18 to prevent displacement. The temperature data is analyzed by the built-in model to show the linear relationship between surface acoustic wave and temperature, and the temperature change of the contact is visualized.

[0026] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A switch cabinet and a surface acoustic wave temperature measuring device, comprising: The cabinet (1), the circuit breaker main cabinet (4) and the heat dissipation base (5) are characterized in that: the upper front side of the cabinet (1) is provided with a control panel (2) for controlling the relevant functions of the switch cabinet, the control panel (2) is integrated with the cabinet (1), the right front side of the cabinet (1) is provided with an emergency switch (3) for controlling the emergency power cut-off of the circuit, the middle position of the cabinet (1) is provided with a circuit breaker main cabinet (4) for switching the circuit and providing circuit protection, and the lower end of the cabinet (1) is provided with a heat dissipation base (5) for providing heat dissipation to it; The circuit breaker main cabinet (4) includes a cabinet door, an inner frame (41), and a contact assembly (49). The inner side of the cabinet door is provided with a cavity for placing the circuit breaker and providing its installation environment. The middle of the cavity is provided with an inner frame (41) for providing support and fixing to the side frame (42). The front side of the inner frame (41) is provided with a side frame (42) for providing support and fixing to several sets of insulating covers (45). The right side of the side frame (42) has a right-angled trapezoidal cross-section and is fitted and installed with the lower outer side of the inner frame (41) and connected and fixed to it by bolts.

2. The switch cabinet and surface acoustic wave temperature measuring device according to claim 1, characterized in that: The lower end of the inner frame (41) and the side frame (42) is provided with a set of wire holders (43) for collecting and protecting the internal wiring harness of the circuit breaker equipment. The wire holder (43) has a hollow structure inside and a wire cavity for wiring. The front and rear ends of the right side of the wire holder (43) are respectively provided with a set of conductor tubes (44) for leading out the relevant wiring harness of the circuit breaker. The inner side of the conductor tube (44) is provided with a cut-resistant steel wire inner layer and an inner insulation wire layer that provides an insulating transmission environment. The upper front end of the side frame (42) is provided with three sets of insulating covers (45) for providing insulation effect. The insulating cover (45) includes an inner layer, a middle layer and an outer layer. The inner layer and the outer layer are both insulating layers made of insulating rubber material.

3. The switch cabinet and surface acoustic wave temperature measuring device according to claim 2, characterized in that: The middle layer is an inner support ring layer that improves the support strength between the inner and outer layers. The inner support ring layer is composed of several sets of annular support rings welded together. The inner support ring layer is made of stainless steel. Each set of insulating covers (45) has a set of poles inside for connecting two sets of plum blossom contacts (49d) on the same horizontal axis. The upper end of the pole has a set of contact arms (46) for conducting electrical energy. The front side of the contact arm (46) has a set of outer insulating frames (47) for maintaining the position of the contact arm (46) and for independent insulation. The outer insulating frame (47) is covered with insulating material. The front side of the contact arm (46) has a set of contact assemblies (49) for conducting and separating current. The outer side of the contact assembly (49) has a set of outer isolation sleeves (48) for providing external insulation protection. The outer isolation sleeves (48) and the inner insulating material of the outer insulating frame (47) are the same.

4. The switch cabinet and surface acoustic wave temperature measuring device according to claim 3, characterized in that: The contact assembly (49) includes an inner ring temperature cavity (49a) and a temperature measuring component (49e). The outer side of the contact assembly (49) is provided with an inner ring temperature cavity (49a) for diffusing and cooling the temperature released by the plum blossom contact (49d). The middle position of the inner ring temperature cavity (49a) is provided with a set of plum blossom contacts (49d) for conducting and separating the current. The outer side of the middle position of the plum blossom contact (49d) is provided with a set of isolation rings (49b) for supporting and fixing the contact piece to form an annular conductive path. The plum blossom contact (49d) is an annular metal component and is fixed to its internal support frame by mechanical assembly of several sets of contact pieces, and is arranged in an annular structure.

5. A switch cabinet and surface acoustic wave temperature measuring device according to claim 4, characterized in that: The inner side of the inner ring wall of the plum blossom contact (49d) is provided with a set of contacts for connecting with external conductive components. The outer side of the contact is provided with a set of annular grooves, in which spring contact fingers are embedded. The springs provide a pre-tightening force to the contacts. Each set of contact pieces is provided with an outer positioning frame (49c) for maintaining its outward expansion deformation limit. The temperature measuring component (49e) is installed in conjunction with the isolation ring (49b). The plum blossom contact (49d) is provided with several sets. Every two sets of vertically arranged plum blossom contacts (49d) form a disconnection structure. The front middle position of each set of plum blossom contacts (49d) is provided with a set of temperature measuring components (49e) for measuring the operating temperature change of the plum blossom contact (49d).

6. The switch cabinet and surface acoustic wave temperature measuring device according to claim 5, characterized in that: The temperature measuring component (49e) includes a rear housing (e1) and a positioning clip (e20). The rear housing (e1) is a cylindrical structure. A set of mounting bases (e3 and e4) is provided on the front side of the rear housing (e1) for fixing mounting base one (e3) and mounting base two (e4) while simultaneously holding the rear housing (e1) and mounting bases one (e3) and two (e4) in a sealed connection. The sealing liner (e2) and the rear housing (e1) are an integral structure. The interior of the rear housing (e1) is hollow. The structure includes a set of cavities (e10) on the inner side of the rear housing (e1) for engaging with the rear support spring (e13). The front side of the cavity (e10) is considered to be a ring structure. A set of collector antenna one (e11) is provided in the middle of the cavity (e10) for summarizing and transmitting data from several temperature collectors (e5). Several sets of positioning inserts (e12) are provided on the outer side of the front end of the collector antenna one (e11) for positioning and connecting with collector antenna two (e18).

7. A switch cabinet and surface acoustic wave temperature measuring device according to claim 6, characterized in that: The positioning insert (e12) passes through the middle of the rear support spring (e13) and the middle of the support plate (e14) of the first data collector antenna (e11), and is fitted and connected with the second data collector antenna (e18). The positioning insert (e12) is a concave arc-shaped structure. When the first data collector antenna (e11) and the second data collector antenna (e18) are connected, each set of positioning inserts (e12) has a set of positioning latches (e20) inside to maintain the fitting and locking. Each set of positioning latches (e20) is an elliptical arc-edged structure, and each set of positioning latches (e20) has a set of positioning latches (e20) inside to support its movement. The rear support spring (e13) has a set of support discs (e14) on its front side for maintaining its positioning support. The support discs (e14) are connected and fixed to the rear support spring (e13). The front side of the support discs (e14) has a set of inner grooves (e15) for engaging with the inner ring (e16). The front cross-section of the inner grooves (e15) is a ring structure. The upper and lower sides of the inner grooves (e15) each have a set of anti-foolproof seats for positioning and connection. The upper and lower sides of the inner ring (e16) each have a set of anti-foolproof interfaces (e17) for engaging with the anti-foolproof seats.

8. A switch cabinet and surface acoustic wave temperature measuring device according to claim 7, characterized in that: The front side of the embedded ring (e16) is provided with a set of mounting base one (e3) and a set of mounting base two (e4). The mounting base one (e3) and the mounting base two (e4) are connected and fixed by bolts through the embedded ring (e16). The mounting base one (e3) and the mounting base two (e4) have the same structure, which is a ring structure. Several sets of mounting grooves are evenly distributed on the outer side. The number of mounting grooves is the same as the number of contact pieces inside the plum blossom contact (49d). The position of each set of mounting grooves corresponds to the position of the contact piece. The mounting base one (e3) is provided with several sets of temperature acquisition devices (e5) for wireless data transmission with the temperature sensor (e6), collecting temperature data, analyzing the linear relationship between temperature and surface acoustic wave through the built-in data model, and visualizing the temperature. The several sets of temperature acquisition devices (e5) are arranged in a ring structure. The temperature acquisition device (e5) is a SAW surface acoustic wave gas sensor. The mounting base two (e4) is provided with several sets of temperature sensors (e6) for contact temperature measurement and transmission of surface acoustic waves.

9. A switch cabinet and surface acoustic wave temperature measuring device according to claim 8, characterized in that: The mounting base one (e3) and mounting base two (e4) have a set of collector antenna two (e18) in the middle position inside for transmitting temperature collector data (e5). The collector antenna one (e11) is electrically connected to the collector antenna two (e18) and is also connected to several sets of temperature collectors (e5). The front side of the collector antenna two (e18) has a set of front support springs (e19) for limiting its position. The front support springs (e19) are interlocked and limited inside the front housing (e7). The rear side of the front housing (e7) is connected and fixed to the front side of the mounting base two (e4). The middle position of the front side of the front housing (e7) and the middle position of the rear side of the rear housing (e1) are respectively provided with a set of external mounting ports (e9) for connecting with external equipment. The inner side of the external mounting port (e9) is provided with internal threads for installation. The front housing (e7) has a set of internal support frames (e8) for positioning the collector antenna two (e18).

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