78 results about "Structural temperature" patented technology

The invention discloses a method for preventing and controlling temperature stress cracking of a mass concrete structure. The method comprises the following steps: preparing low-heat high-toughness concrete; low-heat high-toughness concrete is adopted for pouring a mass concrete structure, and simulation calculation is conducted on a transient temperature field and time-varying temperature stress in the mass concrete construction process; and according to a simulation calculation result, in order to avoid temperature stress cracking in the mass concrete structure, the concrete mold entering temperature, the pouring procedure and the construction maintenance are adjusted in good time. The method can be used for preparing the material capable of reducing the adiabatic temperature rise peak value of the mass concrete and improving the tensile strength of the concrete, reasonably determining the pouring construction maintenance system of the mass concrete, and preventing the mass concrete structure from cracking due to the fact that the temperature stress exceeds the allowable tensile strength of the concrete in the construction process.

The invention discloses an intelligent construction method for a global time-varying temperature field of a large-span concrete bridge structure, and relates to the technical field of bridge structure temperature field prediction. Discretizing the bridge and calculating position coordinates; dividing according to position coordinates by considering solar radiation received by the whole region of the bridge; collecting actually measured environment data; constructing a data set, and carrying out normalization processing; constructing a physical constraint loss function and a data constraint loss function; a neural network model is constructed, and an output target is a final prediction value; in a model training process, configuring a weight coefficient for a constraint item, and updating until loss convergence to obtain a temperature prediction result; evaluating the neural network model and completing training; and performing temperature prediction on an actual bridge by using the neural network model. A correlation mechanism of bridge temperature prediction is established, the bridge temperature at a certain moment in the future is predicted while historical temperature data is considered, a physical mechanism is introduced, constraint loss of physical data double constraints is formed, and prediction accuracy is improved.

The invention discloses a method for quickly calculating transient thermal stress of a ceramic radome along a flight path, which comprises the following steps of: determining calculation input which comprises an aerodynamic thermal environment of the ceramic radome and a to-be-evaluated structure scheme; setting a circumferential discrete strategy of the ceramic radome to determine a plurality of meridian planes of the ceramic radome; constructing an aerodynamic thermal environment interpolation model, and determining a meridian plane where aerodynamic heating of the ceramic antenna housing is most strict in the whole flight process; constructing a two-dimensional feature structure model for transient heat transfer and thermal stress analysis of the ceramic radome, and determining an outer contour line of the two-dimensional feature structure model; constructing an axial thermal response calculation interval of the ceramic radome and performing interpolation calculation to obtain aerodynamic thermal environment parameters of the outer contour line at each flight moment; performing heat transfer calculation grid division on the two-dimensional feature structure model, and calculating structure transient temperature distribution of the two-dimensional feature structure model; calculating the temperature gradient of the structure based on the transient temperature distribution of the structure; and calculating transient thermal stress distribution of the ceramic radome by using the structural temperature gradient.

The invention discloses a temperature prediction method and system for a prestressed reinforced concrete long-span beam bridge, and relates to the field of bridge temperature effect analysis. The method comprises the following steps of: 1, acquiring a construction design position coordinate, and monitoring a structure temperature in the construction design position coordinate; step 2, carrying out ANSYS modeling on the structure temperature to divide grids, and establishing a structure temperature field according to the single structure temperature in each grid; 3, acquiring a time sequence corresponding to the single structure temperature, establishing a mapping relation between the time sequence and the structure temperature field, and establishing a coordinate relation between the time sequence and the structure temperature field; and step 4, predicting the temperature at the next moment according to the coordinate relationship between the time sequence and the structural temperature field by using an LS-SVM regression algorithm based on the time sequence. Through temperature monitoring, the distribution rule of a temperature field is mastered, and the influence of the predicted temperature on the deformation of the main beam in the construction process is theoretically analyzed, so that the stress and deformation in the construction process can be timely and intuitively evaluated.

The invention discloses a dynamic seal leakage characteristic test device, which comprises a shell, end covers, a rotating shaft, two turntables, a radial displacement adjusting structure, a temperature sensor, a pressure sensor and a flowmeter, and is characterized in that the end covers are cooperatively installed at two ends of the shell and then cooperatively installed on the rotating shaft, the middle part of the shell is provided with an air inlet, the end covers are provided with air outlets, and the number of the turntables is two; the two rotating discs are installed on the periphery of the rotating shaft in a spaced mode and located on the two sides of the air inlet, the peripheries of the rotating discs and the inner periphery of the shell form an annular cavity used for installing a dynamic seal test piece, and the radial displacement adjusting structure is connected with the shell and used for driving the shell to move in the radial direction of the rotating shaft. And the temperature sensor, the pressure sensor and the flowmeter are respectively used for monitoring the temperature and the pressure at the air inlet and the air flow at the air outlet. The dynamic seal leakage characteristic test device can measure the leakage rate of the brush seal under the conditions of different pressure differences, different temperatures and different rotating speeds, and can simulate the radial interference working condition under the impact of a large load.

The invention discloses a BP neural network-based concrete box girder bridge temperature time-lag prediction and elimination method, and belongs to the bridge health detection technology, the method provides a temperature time-lag calculation index, constructs a BP neural network-based daily temperature difference and temperature time-lag coefficient relation model, can determine the temperature time-lag under different sunshine temperature differences, and provides a BP neural network-based concrete box girder bridge temperature time-lag prediction and elimination method. The problem that a conventional time domain translation method is not suitable for a long-term monitoring data sequence with large temperature fluctuation is solved, the correlation between bridge structure response monitoring data and structure temperature data is greatly improved, and support is provided for structure state diagnosis.

The invention relates to the technical field of tunnel state diagnosis and early warning, and discloses a tunnel health state intelligent diagnosis and early warning method based on multi-modal fusion, which comprises the following steps of: 1, arranging various types of sensors on a tunnel structure, multi-modal data information such as vibration response, reinforced concrete corrosion condition, circumferential strain, structural temperature, longitudinal pipe joint opening displacement and water leakage, traffic load and the like is collected in real time. According to the tunnel health state intelligent diagnosis and early warning method based on multi-modal fusion, through deep fusion of sensing data of multiple modals, the advantages of different sensors are fully played, information islands among data of all modals are broken through, advanced data fusion algorithms and models are utilized, deep mining and analysis are carried out on multi-source heterogeneous data, and the tunnel health state intelligent diagnosis and early warning method based on multi-modal fusion is realized. The health information of the tunnel structure can be obtained more comprehensively and accurately, fine evaluation of the health state of the tunnel is achieved, and the reliability and accuracy of the evaluation result are improved.

The invention discloses an inflatable returner structure safety analysis method and system considering a thermo-pneumatic elastic effect, and the method comprises the steps: building a structural dynamics sub-model, a fluid domain calculation sub-model and a structural thermodynamics sub-model of an inflatable returner, and comprehensively considering the structural thermal deformation caused by aerodynamic heat and the thermal expansion effect of an internally inflated gas; and a bidirectional coupling relationship among aerodynamic force, aerodynamic heat, structural deformation, temperature and internal charging pressure is constructed through the feedback effect of structural deformation on a flow field and an aerodynamic load. And carrying out multi-physics field simultaneous solution by adopting a time step propulsion method, and finally realizing comprehensive safety evaluation of the temperature, stress and deformation characteristics of the structure. According to the method, aerodynamic load distribution, temperature field change, stress response and vibration characteristics of the inflatable returner in the reentry process can be accurately predicted, so that the thermal protection performance and structural safety of the inflatable returner are comprehensively evaluated, and reliable analysis means and engineering basis are provided for optimization design and structural stability improvement of a thermal protection system.

The present invention discloses a method for measuring locking stress of a highly modular steel truss structure, including determining a module rod for which locking stress measurement is to be performed; determining the arrangement of sensors in a stress-temperature measurement and acquisition system; installing a stress-temperature measurement and acquisition system and an environmental meteorological monitoring system in a loose-rod state at the stage of the module rod leaving the factory, measuring stress-temperature data from a zero stress state, and uploading the data to a data cloud platform; the stress-temperature measurement and acquisition system and the environmental meteorological monitoring system continuously collect stress-temperature data throughout the entire process, and uploading the data to a data cloud platform; calculating and eliminating the influence of structural temperature stress and the semi-rigid node effect of the truss structure, and obtaining the locking stress measurement result of the module rod. The present invention monitors the entire process of the component from the time of leaving the factory, and performs temperature stress correction and semi-rigid node correction through sensor arrangement and temperature field monitoring, and obtains the locking stress measurement result of the key rod position.

The application provides a method for determining the structural temperature field and thermal deformation of a compressor rotating disc cavity, which can be applied to the technical field of heat analysis of turbomachinery. The method comprises the following steps: obtaining the geometric parameters, operating parameters and working substance property parameters of the gas in the disc cavity; based on the balance between the buoyancy effect and the viscous effect driven by the centrifugal force, the average heat flux density of the outer ring cover of the disc cavity is obtained according to the outer ring cover radius, the axial gap of the disc cavity, the rotating disc speed, the outer ring cover temperature, the rotating core zone temperature, the Prandtl number, the density, the dynamic viscosity and the thermal conductivity; based on the heat conduction analogy relationship of the laminar Ekman boundary layer, the local heat flux density of the rotating disc is obtained according to the rotating disc speed, the kinematic viscosity, the thermal conductivity and the difference between the rotating disc temperature and the rotating core zone temperature; and the structural temperature field distribution and the thermal deformation of the rotating disc cavity are obtained according to the average heat flux density of the outer ring cover of the disc cavity and the local heat flux density of the rotating disc.

The utility model discloses a corrosion type PH transmitter probe, which comprises a device body, the device body comprises a plug-in device, a fixed cylinder and a protective device, the fixed cylinder is arranged at the top of the plug-in device, and the protective device is arranged at the bottom of the fixed cylinder; the protection device comprises an outer protection shell, a first reference lead, a second PH reference lead, a diaphragm and a temperature sensor, the outer protection shell is of a cylindrical structure, the diaphragm is installed at the bottom of the outer protection shell, a PH glass film is arranged at the bottom of the diaphragm and is of a balloon-shaped structure, and the temperature sensor is located in the PH glass film. The first reference lead and the second PH reference lead are both located in the outer protective shell, one end of the first reference lead and one end of the second PH reference lead are connected with the temperature sensor, and the other end of the first reference lead and the other end of the second PH reference lead are connected with the plug-in device. The device can effectively achieve the purpose of self protection, thereby preventing corrosion and damage to the transmitter probe caused by external factors.

The utility model discloses a super-long structure temperature induction joint structure which comprises a U-shaped groove induction joint arranged at the weak stress position of a super-long structure, a water stop belt is embedded in the bottom of the U-shaped groove induction joint, a drainage structure is fixed to the outer side of the bottom of the U-shaped groove induction joint, and the drainage structure is connected into an adjacent rainwater vertical pipe. And the U-shaped groove induction joint is filled with a joint filling material. According to the temperature induction joint structure, the problem of water seepage at the structural joint is solved, the maintenance cost is reduced, and the building facade effect and structural column grid arrangement are not affected.

This invention relates to the field of bridge engineering technology, specifically to a method and system for calculating temperature fatigue damage. The method includes the following steps: establishing daily temperature curves for the top and bottom slabs based on measured temperatures over a set time period; obtaining the absolute value of the overall temperature difference, the maximum positive vertical temperature difference between the top and bottom slabs, and the absolute value of the maximum negative vertical temperature difference between the top and bottom slabs based on the daily temperature curves; determining the daily equivalent temperature stress amplitude based on the daily absolute values ​​of the overall temperature difference, the maximum positive vertical temperature difference between the top and bottom slabs, and the maximum negative vertical temperature difference between the top and bottom slabs; and calculating the temperature fatigue damage of the bridge structure based on the S-N curve and the daily equivalent temperature stress amplitude. This invention provides a method and system for calculating temperature fatigue damage, which can solve the problem of the need for highly computational equipment and the difficulty in calculating temperature fatigue in existing technologies.

A temperature monitoring unit may be removably installed inside an aircraft wing structure for monitoring temperature conditions along the span of the wing. The wing structure has a temperature-sensitive device (162) for monitoring a temperature con- dition, which is attached to a support frame (173). The support frame and attached temperature-sensitive device may be installed as a unit within the wing structure. The support frame may be configured for sliding engagement inside the wing structure, for example, with a set of tracks.

The present invention relates to the field of temperature control, and in particular to a temperature parameter control method and system for a new energy motor bench test box. The method comprises the following steps: obtaining the real-time working temperature parameters of the test box and the test box structure diagram based on multiple sensor nodes; obtaining spatial temperature distribution data based on the real-time working temperature parameters of the test box; dynamically rendering the change trajectory distribution of the spatial temperature distribution data to construct a dynamic temperature change distribution field; performing position layout analysis on the test box structure diagram to obtain component position layout data; performing three-dimensional interpolation mapping on the component position layout data based on the dynamic temperature change distribution field to obtain a three-dimensional structural temperature change distribution model; obtaining multiple temperature control area models based on the three-dimensional structural temperature change distribution model; performing segmented temperature control decisions on multiple temperature control area models to obtain a multi-order duty cycle temperature control strategy. The present invention achieves efficient and uniform temperature control.

An intelligent construction method for the global time-varying temperature field of a long-span concrete bridge structure, which relates to the technical field of bridge structure temperature field prediction. Discretize the bridge and calculate the position coordinates; consider the solar radiation received by the entire bridge and divide it according to the position coordinates; collect measured environmental data; construct a data set and perform normalization processing; construct a physical constraint loss function and a data constraint loss function; construct a neural network model with the output target being the final predicted value; during the model training process, configure weight coefficients for the constraint terms and update until the loss converges to obtain the temperature prediction result; evaluate the neural network model and complete the training; use the neural network model to predict the temperature of the actual bridge. Establish an association mechanism for bridge temperature prediction, predict the bridge temperature at a future moment while considering historical temperature data, and introduce a physical mechanism to form a constraint loss with double constraints of physical data, thereby improving the prediction accuracy.

The utility model relates to the technical field of regulator, concretely relates to a regulator with temperature protection function, regulator body, back cover, integrated circuit and temperature sensor, the recess is arranged to the lower surface of regulator body, the back cover can be connected in the recess along the mouth and is formed with the cavity structure with the recess cooperation, the integrated circuit is arranged in the cavity structure, the boss is arranged on the back cover, the boss is hollow structure, the temperature sensor is arranged in the lower end in this boss, the temperature sensor is connected on the integrated circuit through the wire, among them, the regulator with temperature protection function is installed on the generator back cover, the boss lower end can contact the copper line on the stator assembly of generator. The boss contacts on the copper line on the stator assembly, the heat that the copper line of stator assembly sends out can be passed through the boss and is delivered to the temperature sensor in the working process of generator, the temperature sensor is connected with the integrated circuit, and the integrated circuit adjusts the duty cycle of generator through the temperature value of measurement.

The invention relates to a fluid-solid-heat coupling calculation method and device based on wall surface temperature heat flow correction, and relates to the technical field of fluid-solid coupling calculation. The method comprises the steps of calculating initial wall surface heat flow and initial surface pressure; performing structure transient heat conduction calculation in the initial time interval by taking the initial wall surface heat flow as a heat boundary condition to obtain first structure temperature distribution; calculating structural deformation to obtain a first wall surface heat flow and a first surface pressure; repeating the steps to obtain second structure temperature distribution; in the first time interval, calculating a corrected heat flow through a heat flow interpolation model; judging whether the corrected heat flow exceeds a precision threshold value or not; if not, skipping structural deformation and fluid domain calculation at a second moment, and entering a second coupling step; if yes, calculating structural deformation and a fluid domain at a second moment, and entering a second coupling step; and the preset total simulation time is reached. According to the method, the simulation calculation efficiency can be improved while the calculation precision is ensured.

The utility model provides a concrete box type structure with the inside and outside temperature difference adjusting function, which comprises a box type beam and a conical ventilation pipe, a plurality of first reserved through holes penetrating inside and outside are arranged on a side web of the box type beam, and the conical ventilation pipe is fixedly arranged in the first reserved through holes. And the small-aperture end of the conical ventilation pipe faces the interior of the box chamber of the box beam. According to the concrete box-type structure, the temperature difference between the interior and the exterior of the box is automatically adjusted through the conical ventilation pipes arranged on the side web plates of the box-type beams, the temperature inside and outside the concrete box-type structure can be reduced under the condition that non-renewable resources are not consumed, and the concrete box-type structure is cleaner and more environmentally friendly compared with mechanical means; the structural temperature stress generated by the temperature difference can be effectively reduced, the configuration of common steel bars or prestressing tendons is reduced, and the economic and technical indexes of the concrete structure can be improved.

The invention provides a measuring device and method for measuring the liquid level height of liquid in a low-temperature container, and relates to the field of measuring the liquid level height of the liquid in the low-temperature container, the measuring device comprises a liquid frame structure, a temperature sensor, a signal acquisition structure and a data processing structure, the liquid frame structure comprises an outer frame structure and an inner frame structure, the outer frame structure and the inner frame structure are each of a cuboid structure. A plurality of temperature sensors are arranged, the plurality of temperature sensors are arranged on the side wall of the inner frame structure, the plurality of temperature sensors are distributed in the direction perpendicular to the ground, and the temperature sensors are attached to the outer side wall of the inner frame structure; the signal acquisition structure is electrically connected with the temperature sensor, and the signal acquisition unit is arranged on the outer frame structure; and the data processing structure is electrically connected with the signal acquisition structure. According to the invention, the problems of intrusive damage to the heat insulation layer, weak anti-interference capability and limited application scene are solved.

The invention relates to the technical field of positive displacement pumps, and discloses a pump and a mechanical seal wear-resisting structure.The pump comprises a base, a motor fixedly arranged on the base, a rotating shaft fixedly arranged at the output end of the motor and a pump body fixedly arranged on the base and further comprises a connecting support, and a fixing block is fixedly installed in the connecting support; a wear-resistant structure is movably mounted in the fixed block; through the wear-resistant structure, the first-stage pushing structure is triggered when the temperature rises for the first time, the second-stage pushing structure is triggered to automatically enhance the lubricating effect when the temperature rises continuously and abnormally, and intelligent lubrication supplied according to needs is achieved by means of thermophysical characteristics and magnetic coupling of materials; the risk that the mechanical seal is damaged in a dry grinding state is greatly reduced, the service life of the pump is prolonged, lubricating oil is distributed according to needs, and waste is avoided.

The present invention provides a crankshaft and roller matching structure, a compressor, and an air conditioner. The crankshaft and roller matching structure includes a crankshaft and a roller. The crankshaft has an eccentric portion, and the roller has an inner hole. The eccentric portion is in the inner hole and a first gap m is formed between the two. When the temperature of the matching structure rises, the outer diameter D2 of the eccentric portion after thermal expansion is smaller than the inner hole diameter D1 of the roller after thermal expansion. The present invention provides a crankshaft and roller matching structure, a compressor, and an air conditioner. When the temperature of the compressor rises, the outer diameter of the eccentric portion of the crankshaft after thermal expansion is smaller than the inner hole diameter of the roller after thermal expansion, thereby preventing the crankshaft and the roller from locking or getting stuck during the operation of the compressor.

The utility model relates to the technical field of sensor mounting equipment, in particular to a mounting structure, a temperature sensor and a reaction kettle, the mounting structure comprises a flange, a base plate and a lining plate, the base plate is positioned on one side of the flange, a first mounting hole is formed in the center of the base plate, and the lining plate is positioned on the other side of the flange. By additionally arranging the base plate, the direct acting force of negative pressure in the reaction kettle on the joint of the temperature measuring rod can be dispersed, the overall structural strength of the mounting structure is enhanced, the risk of tearing the lining is reduced, the service life of the temperature sensor is prolonged, the maintenance cost of equipment is reduced, and the service life of the temperature sensor is prolonged by enhancing the stability of the mounting structure. According to the utility model, the temperature measurement accuracy of the temperature sensor is ensured, production safety accidents and environmental protection risks caused by inaccurate temperature measurement are avoided, and the production safety and stability are improved.

The application provides a manufacturing method of a concrete structure temperature stress release groove, and specifically comprises the following steps: S1, setting multiple groups of frame columns on a construction site; S2, pouring concrete blocks between the multiple groups of frame columns; S3, installing edge sealing beams in a 'concave' shape between the multiple groups of frame columns, so that a backfill space for lightweight concrete is reserved in the middle of the edge sealing beams; S4, installing foamed polystyrene boards on the inner sides of the 'concave' shaped edge sealing beams on the left and right sides close to the lightweight concrete backfill space reserved in the middle; S5, backfilling lightweight concrete so that the lightweight concrete fills the lightweight concrete backfill space reserved in the middle of the edge sealing beams; and S6, after the lightweight concrete solidifies, using an acetone solution to dissolve the foamed polystyrene boards, so that gap joints are formed between the lightweight concrete and the left and right ends of the edge sealing beams. The application has the advantages of simple process, small construction difficulty, short construction period, convenient operation, no need for additional steel bars, and low construction cost.

The present invention relates to a method for testing the temperature of a ceramic-based composite material structure based on an optical fiber sensor, and belongs to the technical field of aeroengine testing. The method is to prepare a high-temperature-resistant ceramic composite coating on the surface of a curved part of a ceramic-based composite material substrate to install and fix a flexible optical fiber sensor, and to achieve a structural temperature test of a composite material substrate part by pre-calibrating the temperature fitting curve obtained by calibrating the test data of the optical fiber sensor. The method can be used for structural temperature testing of ceramic-based composite curved surface parts for next-generation aeroengines under high-temperature working environments, and provide effective data support for the development, verification and improvement of related materials and components.

The application discloses a kind of for space electron beam welding test device, comprising: equipment controller, inside the box is placed, with moving mechanism, infrared thermal imaging detector and electron beam gun connection;Mobile control instruction is sent to moving mechanism, and the detection of structural temperature field distribution performance;Electron beam gun, the electron beam generated, for the welding, cutting or additive forming on test workpiece after heating and melting of metal wire;Excess protection device is placed below electron beam gun, to prevent metal droplet on test workpiece from flying out.Infrared thermal imaging detector, the cutting, welding and additive process of electron beam gun are photographed;Temperature is measured;Moving mechanism moves according to mobile control instruction;Radiation plate radiates heat generated to the outside of box;Test workpiece is placed on the upper surface of excess protection device, excess protection device is connected with moving mechanism, moves with moving mechanism, drives test workpiece to move, realizes the processing of test workpiece.

The invention provides a gradient tightly-supported domain radius optimization principle-based temperature distribution inversion method, which comprises the following steps of: 1, performing unit node division on a measured structure to obtain a unit node temperature value and a temperature function correlation model between any point in the measured structure; step 2, adaptively adjusting a function tight supporting domain radius by using a temperature gradient of a node of a measured structure unit; 3, formulating an optimization scheme of the number and position layout of the fiber grating sensors, and obtaining an optimal configuration form of the sensors through global optimization search; and 4, constructing a multivariable regression error functional model added with a regularization term, solving the unit node temperature value by combining the unit node temperature value with a temperature function correlation model between any points in the measured structure, and performing inversion to obtain the temperature distribution of the measured structure. According to the method, the number and the positions of the fiber grating sensors are optimized, unnecessary measuring point arrangement is reduced, and the use cost and the failure risk are reduced on the premise that the influence on the reconstruction precision of the temperature field is small.

The present invention discloses a multi-tower asymmetric low-tower cable-stayed bridge. The multi-tower low-tower cable-stayed bridge is a long-span structure with a large structural temperature effect; the existing symmetrical structure causes waste of engineering investment. The present invention includes side spans, main spans, and bridge towers, and the steel trusses are fixedly connected to the bottom of the bridge towers; supports are set on the top surfaces of the main piers, auxiliary piers, and connecting piers, and the main pier at the center position is provided with longitudinal and transverse fixed supports on one side of the transverse bridge direction, and longitudinal fixed supports on the other side, and longitudinal movable supports and longitudinal and transverse movable supports are set at other piers; dampers are set on both sides of the supports along the bridge direction; the bridge towers are set at different heights, with high bridge towers configured for large-span spans and low bridge towers configured for small-span spans, and the number of inclined cables matches the height of the bridge towers. The bridge piers where the longitudinal fixed supports are set in the present invention bear longitudinal additional forces such as braking force, and the main beams at other piers can freely expand and contract longitudinally, solving the problem of large bending moments of bridge towers caused by temperature effects in long-span and long-span asymmetric structures.

The utility model provides a motor busbar, a motor assembly and a vehicle, and relates to the technical field of vehicle parts, the motor busbar comprises a busbar body and a temperature detection device fixing structure, and the temperature detection device fixing structure is arranged at one end, close to a stator core, of the busbar body. The busbar body is provided with a temperature detection device fixing structure, the temperature detection device fixing structure and the busbar body are of an integrated structure, a mounting groove is formed in the surface, facing the stator winding and corresponding to the coil, of the temperature detection device fixing structure, the mounting groove is used for mounting the temperature detection device, and the temperature detection device fixing structure is used for pressing the temperature detection device on the corresponding coil. The temperature detection device is pressed on a corresponding coil of the stator winding through the temperature detection device fixing structure, so that the temperature detection device is fixedly installed. Moreover, the temperature detection device fixing structure and the busbar body are designed into an integrated structure, so that the number of parts can be reduced, the installation cost of the temperature detection device is reduced, and the fixing reliability of the temperature detection device is improved.