Exhaust structure of temperature control equipment for motor test

Abstract

The utility model discloses an exhaust structure of temperature control equipment for motor testing. According to the technical scheme, a main pipe is included, a fluid inlet pipe and a fluid outlet pipe are arranged at the upper end and the lower end of the main pipe respectively, a plurality of inclined and stacked guide plates are fixedly connected to the interior of the main pipe, and the guide plates are arranged on the inner wall of the main pipe in a zigzag mode. Exhaust mechanisms are symmetrically arranged on the two sides of the main pipe, each exhaust mechanism comprises an exhaust shell, an exhaust cavity is formed between the exhaust shell and the main pipe, the main pipe is communicated with the exhaust cavity through a plurality of overflow holes, and an exhaust valve communicated with the exhaust cavity is arranged at the top of each exhaust shell. According to the scheme provided by the utility model, the fluid can be efficiently degassed and exhausted.

Description

Technical Field

[0001] The utility model relates to the technical field of motor testing, in particular to an exhaust structure of a temperature control device for motor testing. Background Art

[0002] Enterprises engaged in motor production need to conduct various parameter tests on their products to check whether the performance and quality of the motor products meet the national standards. The motor test system provides sufficient data support for product design, quality inspection, etc. The correctness and accuracy of the test data are necessary prerequisites for verifying the motor design and ensuring the motor quality. The motor test system generally consists of a dynamometer, a dynamometer controller, a test power supply, a dynamometer stand, tooling fixtures, a temperature control device, and software and hardware of a measurement and control instrument. Among them, the temperature control device plays a very important role. It controls parameters such as the temperature and flow rate of the fluid entering the motor workpiece. The performance of the temperature control device directly affects the test error in the motor test.

[0003] Most of the existing temperature control devices for motor testing on the market use a coolant as the fluid medium. The composition of the coolant is a mixture of water and ethylene glycol. When the temperature drops to dozens of degrees below zero, the viscosity of the mixture increases, the volume of the entrained bubbles becomes smaller, and affected by the surface tension of the liquid, the small bubbles are less likely to overflow; when the mixture is heated to more than one hundred degrees Celsius, the water in it is prone to evaporate to form bubbles; in addition, the open structure of the liquid storage tank is also likely to introduce air into the pipeline to form bubbles. Such functional and structural characteristics of the temperature control device result in more bubbles in the fluid. These entrained bubbles cause unstable fluctuations in the fluid temperature, making the measurement errors of the flowmeter and pressure gauge larger and the performance of the temperature control device worse. Summary of the Utility Model

[0004] Aiming at the deficiencies of the existing technology, the main purpose of the present utility model is to provide an exhaust structure of a temperature control device for motor testing that can efficiently degas and exhaust the fluid.

[0005] To achieve the above purpose, the present utility model provides the following technical solution: An exhaust structure of a temperature control device for motor testing, including a main pipe. A fluid inlet pipe and a fluid outlet pipe are respectively arranged at the upper end and the lower end of the main pipe. A plurality of inclined and stacked flow guiding plates are fixedly connected inside the main pipe. The plurality of flow guiding plates are arranged in a zigzag shape on the inner wall of the main pipe. Exhaust mechanisms are symmetrically arranged on both sides of the main pipe. Each exhaust mechanism includes an exhaust housing. An exhaust cavity is formed between the exhaust housing and the main pipe. The main pipe and the exhaust cavity are communicated through a plurality of overflow holes. An exhaust valve communicated with the exhaust cavity is arranged at the top of each exhaust housing.

[0006] Preferably, three side walls of each flow guiding plate are respectively welded and connected to the inner wall of the main pipe. A gap for the fluid to pass through is formed between the lower side wall and the inner wall of the main pipe.

[0007] Preferably, a plurality of mutually parallel flow guiding grooves are provided on the lower surface of each flow guiding plate.

[0008] Preferably, the main pipe is arranged vertically.

[0009] Preferably, the cross-sectional shape of the main pipe is square.

[0010] Preferably, the opening shape of the overflow air hole is a long and narrow rectangle.

[0011] The utility model has the following advantages compared with the prior art. The fluid enters the upper end of the main pipe through the fluid inlet pipe and enters the fluid outlet pipe from the lower end of the main pipe. It can efficiently degas and exhaust the fluid. The structural design of the flow guiding plate prolongs the fluid path. A plurality of the flow guiding plates are arranged in a zigzag shape on the inner wall of the main pipe. The wedge-shaped structure formed by the angle between two flow guiding plates reduces the flow velocity, which is beneficial to the overflow of bubbles. The bubbles enter the exhaust mechanisms on both sides of the main pipe. The bubbles enter the exhaust cavity through the overflow air holes and are discharged through the exhaust valves. The less bubbles are entrained in the fluid, the better the control performance of the fluid heating temperature, and the smaller the measurement error of the pipeline flowmeter and pressure gauge. Therefore, this structural device is especially suitable for temperature control equipment for high-precision motor testing. Description of the Drawings

[0012] Figure 1 It is a schematic structural diagram of an exhaust structure of a temperature control device for motor testing according to the utility model;

[0013] Figure 2 It is a cross-sectional view of an exhaust structure of a temperature control device for motor testing according to the utility model;

[0014] Figure 3 It is a three-dimensional structural diagram of the stacked relationship of the flow guiding plates according to the utility model;

[0015] Figure 4 It is a structural diagram of the flow guiding plate according to the utility model.

[0016] In the figure: 1, fluid inlet pipe; 2, right exhaust valve; 3, right exhaust cavity; 4, left exhaust cavity; 5, right exhaust housing; 6, right overflow air hole; 7, flow guiding plate; 8, flow guiding groove; 9, main pipe; 10, fluid outlet pipe. Detailed Embodiments

[0017] The following further describes the utility model with reference to the drawings.

[0018] As Figure 1As shown in the figure, an exhaust structure of a temperature control device for motor testing includes a main pipe 9. A fluid inlet pipe 1 and a fluid outlet pipe 10 are respectively arranged at the upper and lower ends of the main pipe 9. A plurality of inclined and stacked flow guiding plates 7 are fixedly connected inside the main pipe 9. The plurality of flow guiding plates 7 are arranged in a zigzag shape on the inner wall of the main pipe 9. Exhaust mechanisms are symmetrically arranged on both sides of the main pipe 9. Each exhaust mechanism includes an exhaust housing. An exhaust cavity is formed between the exhaust housing and the main pipe 9. The main pipe 9 and the exhaust cavity are communicated through a plurality of overflow holes. A top of each exhaust housing is provided with an exhaust valve communicated with the exhaust cavity.

[0019] In the exhaust structure of the temperature control device for motor testing of this solution, the fluid enters the upper end of the main pipe 9 through the fluid inlet pipe 1 and enters the fluid outlet pipe 10 from the lower end of the main pipe 9. High - efficiency degassing and exhaust of the fluid can be carried out. The structural design of the flow guiding plates 7 prolongs the fluid path. The plurality of flow guiding plates 7 are arranged in a zigzag shape on the inner wall of the main pipe 9. The wedge - shaped structure formed by the angle between two flow guiding plates 7 reduces the flow rate, which is beneficial to the overflow of bubbles. The bubbles enter the exhaust mechanisms on both sides of the main pipe 9, enter the exhaust cavity through the overflow holes and are discharged through the exhaust valves. The less bubbles are entrained in the fluid, the better the control performance of the fluid heating temperature and the smaller the measurement error of the pipeline flowmeter and pressure gauge. Therefore, this structural device is especially suitable for temperature control devices for high - precision motor testing.

[0020] In this solution, the two exhaust mechanisms are symmetrically arranged on both sides of the main pipe 9. The right exhaust mechanism includes a right exhaust housing 5, a right exhaust cavity 3 and a right exhaust valve 2. The right exhaust cavity 3 is communicated with the inside of the main pipe 9 through a right overflow hole 6. The left exhaust mechanism has the same structure as the right exhaust mechanism, including a left exhaust housing, a left exhaust cavity 4 and a left exhaust valve. The left exhaust cavity 4 is communicated with the inside of the main pipe 9 through a left overflow hole.

[0021] Preferably, three side walls of each flow guiding plate 7 are respectively welded to the inner wall of the main pipe 9. A gap for the fluid to pass through is formed between the lower side wall and the inner wall of the main pipe 9. The welding connection of the three side walls to the inner wall of the main pipe 9 respectively ensures the effective fixation of the flow guiding plate 7. The inclined setting forms a gap for the fluid to pass through conveniently.

[0022] Preferably, a plurality of mutually parallel flow guiding grooves 8 are arranged on the lower surface of each flow guiding plate 7. The arrangement direction of the flow guiding grooves 8 is consistent with the fluid flow direction. This design is beneficial to collecting small bubbles entrained in the fluid.

[0023] Preferably, the main pipe 9 is arranged vertically. The vertical arrangement is beneficial to the overflow and collection of bubbles.

[0024] Preferably, the cross - sectional shape of the main pipe 9 is square. The square setting can facilitate the installation and fixation of the flow guiding plates 7 to the inner wall of the main pipe 9.

[0025] Preferably, the opening shape of the overflow air hole is a long and narrow rectangle, which is conducive to the smooth discharge of air.

[0026] The above are only the preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the idea of the present invention belong to the protection scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. An exhaust structure of a temperature control device for motor testing, characterized in that: The invention comprises a main pipe, wherein the upper end and the lower end of the main pipe are respectively provided with a fluid inlet pipe and a fluid outlet pipe, wherein a plurality of inclined and stacked guide plates are fixedly connected to the interior of the main pipe, wherein the plurality of guide plates are zigzag-shapedly arranged on the inner wall of the main pipe, and exhaust mechanisms are symmetrically arranged on both sides of the main pipe, wherein each exhaust mechanism comprises an exhaust shell, wherein an exhaust cavity is formed between the exhaust shell and the main pipe, wherein the main pipe and the exhaust cavity are connected via a plurality of overflow holes, and an exhaust valve connected to the exhaust cavity is arranged on the top of each exhaust shell.

2. The exhaust structure of the temperature control device for motor testing according to claim 1 is characterized in that: The three side walls of each guide plate are respectively connected to the inner wall of the main pipe by welding, and a gap is formed between the lower side wall and the inner wall of the main pipe for fluid to pass through.

3. The exhaust structure of the temperature control device for motor testing according to claim 1 is characterized in that: The lower surface of each guide plate is provided with a plurality of guide grooves parallel to each other.

4. The exhaust structure of the temperature control device for motor testing according to claim 1 is characterized in that: The main pipe is arranged vertically.

5. The exhaust structure of the temperature control device for motor testing according to claim 1, characterized in that: The cross-sectional shape of the main pipe is a square.

6. The exhaust structure of the temperature control device for motor testing according to claim 1, characterized in that: The opening shape of the overflow hole is a narrow and long rectangle.

Images