Device for automatically measuring performance of temperature control valve of oil cooler

Abstract

The embodiment of the utility model provides an automatic measuring device for the performance of a temperature control valve of an oil cooler. The automatic measuring device comprises an oil bath pan, a detection assembly and an electric cabinet, an oil tank and a heater are arranged on the oil bath pan; a temperature sensor is arranged in the oil tank; the detection assembly comprises a positioning bottom plate, a top plate and a plurality of displacement sensors; the positioning bottom plate covers the top opening of the oil groove, and a plurality of positioning holes are formed in the positioning bottom plate; the top plate is arranged above the positioning bottom plate in parallel and at intervals, and the displacement sensors are installed at the bottom of the top plate and correspond to the positioning holes one to one; the heater, the temperature sensor and the displacement sensor are electrically connected with the electric cabinet; the positioning bottom plate is used for positioning the multiple temperature control valve elements at the same time, the displacement sensors are used for detecting the sliding seat displacement amount of the corresponding temperature control valve elements, automatic measurement can be carried out on the temperature control valve elements in batches, the measurement precision and safety are high, and the cost is low.

Description

Technical Field

[0001] This utility model relates to the field of air compressor technology, specifically to an automatic measurement device for the performance of an oil cooler temperature control valve. Background Technology

[0002] The oil cooler temperature control valve is a crucial component in the oil circuit system of an oil-injected screw compressor. Its function is to regulate the amount of lubricating oil passing through the oil cooler based on the lubricating oil temperature, thereby controlling the unit's exhaust temperature. Specifically, when the lubricating oil temperature is below the valve's opening value, the lubricating oil returns directly from the oil-gas separator to the compressor unit. Conversely, when the lubricating oil temperature is above the valve's opening value, the valve opens, allowing the lubricating oil to enter the oil cooler for cooling before returning to the compressor unit, thus preventing excessively high oil temperatures that could shorten oil life.

[0003] The structure of a commonly used temperature control valve core 1 is as follows: Figure 1 As shown, the valve includes a valve seat 11 and a temperature sensing element 12 and a slide 13 respectively disposed at both ends of the valve seat 11. When the temperature sensing element 12 senses that the lubricating oil temperature is higher than the opening value of the temperature control valve, the slide 13 can move away from the valve seat 11, thereby opening the bypass flow channel; and the displacement of the slide 13 will also change with the change of oil temperature to control the bypass flow.

[0004] Therefore, both manufacturers of oil-injected screw compressors and thermostatic valve cores need accurate information on the opening degree or bypass volume of the thermostatic valve at different oil temperatures. Currently, the common measurement method involves placing the temperature-sensing element of the thermostatic valve core in an oil bath, heating the lubricating oil until the temperature stabilizes, then removing the valve core and quickly measuring the displacement of the slide block using calipers or similar tools. This manual measurement method is not only inaccurate and requires considerable manpower, but also carries the risk of burns from the hot lubricating oil when removing the valve core for measurement. Furthermore, this method does not support batch consistency testing of valve cores.

[0005] Therefore, it is necessary to develop an automatic measurement device for the performance of the oil cooler temperature control valve to solve the above-mentioned technical problems. Utility Model Content

[0006] An embodiment of this utility model provides an automatic measurement device for the performance of an oil cooler temperature control valve. This automatic measurement device can perform automated measurement of temperature control valve cores in batches, with high measurement accuracy and safety, and relatively low cost.

[0007] This utility model provides an automatic measurement device for the performance of an oil cooler temperature control valve, including an oil bath, a detection component and an electrical control box; the oil bath is provided with an oil tank for holding lubricating oil and a heater for heating the lubricating oil in the oil tank, the oil tank is an open tank with an open top, and a temperature sensor for real-time detection of the lubricating oil temperature is provided in the oil tank.

[0008] The detection assembly includes a positioning base plate, a top plate, and multiple displacement sensors. The positioning base plate covers the top opening of the oil tank and has multiple positioning holes for the insertion of temperature-sensing elements of the temperature control valve core. The top plate is arranged parallel and spaced above the positioning base plate by support rods. The displacement sensors are installed at the bottom of the top plate and are arranged corresponding to the positioning holes. The heater, the temperature sensor, and the displacement sensor are all electrically connected to the electrical control box.

[0009] Optionally, the bottom of the oil bath is provided with multiple adjustable support legs.

[0010] Optionally, the edge of the positioning hole is formed with a positioning groove that matches the valve seat of the temperature control valve core.

[0011] Optionally, a plurality of mounting supports for mounting the displacement sensor are fixedly provided at the bottom of the top plate.

[0012] Optionally, the electrical control box is electrically connected to a host computer, which is configured to automatically generate a performance curve of the temperature control valve core based on the oil temperature signal and displacement signal received by the electrical control box.

[0013] The present invention has the following advantages: a detection component is set at the top opening of the oil tank, and multiple temperature control valve cores are positioned simultaneously using a positioning base plate. The sliding seat displacement of the corresponding temperature control valve core is detected by multiple displacement sensors. Multiple temperature control valve cores can be measured automatically in batches with high measurement accuracy. It can also effectively avoid burns from high-temperature lubricating oil. At the same time, both the device cost and the measurement cost are relatively low. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. 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 commonly used temperature control valve core;

[0016] Figure 2This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the oil bath in this embodiment of the present invention;

[0018] Figure 4 This is a schematic diagram of the detection component in an embodiment of the present invention;

[0019] The numbers in the image represent:

[0020] 1. Temperature control valve core; 11. Valve seat; 12. Temperature sensing element; 13. Slide block;

[0021] 2. Oil bath; 21. Oil tank; 22. Support legs;

[0022] 3. Detection components; 31. Positioning base plate; 32. Top plate; 33. Displacement sensor; 34. Positioning hole; 35. Positioning groove; 36. Support rod; 37. Mounting support;

[0023] 4. Electrical control box. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model. Furthermore, it should be understood that the specific embodiments described herein are only for illustration and explanation of the present utility model and are not intended to limit the present utility model. In the present utility model, unless otherwise stated, directional terms such as "top" and "bottom" generally refer to the top and bottom of the device in its actual use or working state, specifically the drawing direction in the accompanying drawings.

[0025] Please see Figures 2-4 As shown, an embodiment of this utility model provides an automatic measurement device for the performance of an oil cooler temperature control valve, including an oil bath 2, a detection component 3, and an electrical control box 4. The oil bath 2 is equipped with an oil tank 21 for holding lubricating oil and a heater (not shown) for heating the lubricating oil in the oil tank 21. The oil tank 21 is an open tank with a top opening, and a temperature sensor is installed inside the oil tank 21 to detect the oil temperature in real time. The bottom of the oil bath 2 is also equipped with multiple adjustable support legs 22.

[0026] The detection assembly 3 includes a positioning base plate 31, a top plate 32, and multiple displacement sensors 33. The positioning base plate 31 covers the top opening of the oil tank 21 and has multiple positioning holes 34. The temperature sensing element 12 of the temperature control valve core 1 can be inserted into the oil tank 21 through the positioning holes 34. The edges of the positioning holes 34 form positioning grooves 35 that match the valve seat 11 of the temperature control valve core 1, facilitating the positioning of the temperature control valve core 1. The top plate 32 is arranged parallel and spaced above the positioning base plate 31 by support rods 36. The displacement sensors 33 are installed at the bottom of the top plate 32 and are arranged one by one with the positioning holes 34, so as to measure multiple temperature control valve cores 1 simultaneously. Specifically, multiple mounting supports 37 are fixedly installed at the bottom of the top plate 32, and the displacement sensors 33 are installed on the mounting supports 37 (the sensing end of the displacement sensor 33 faces downward).

[0027] The heater, temperature sensor, and displacement sensor 33 are all electrically connected to the electrical control box 4. The electrical control box 4 contains a control module for centralized control of functions such as measurement start, interruption, lubricating oil heating, and constant temperature maintenance. It can also receive oil temperature signals from the temperature sensor and displacement signals from the displacement sensor 33. The electrical control box 4 is electrically connected to a host computer, capable of receiving and executing control commands issued by the host computer, and simultaneously sending the received oil temperature and displacement signals back to the host computer for processing.

[0028] The specific testing steps are as follows: Place the oil bath 2 on the workbench. After adjusting the support legs 22 at the bottom of the oil bath 2 to keep the top surface of the oil bath 2 level, add an appropriate amount of lubricating oil to the oil tank 21. Then, insert the temperature control valve core 1 into the positioning hole 34 on the positioning base plate 31 (with the temperature sensing element 12 facing down). Next, place the detection assembly 3 containing the temperature control valve core 1 on the oil tank 21, so that the temperature sensing element 12 of the temperature control valve core 1 is completely submerged in the lubricating oil. Finally, connect the heater, temperature sensor, and displacement sensor 33 to the electrical control box 4, and connect the electrical control box 4 to the host computer.

[0029] After preparation, the entire measuring device is powered on. Each displacement sensor 33 outputs the current distance of its corresponding temperature control valve core 1 as a signal and sends it to the control box 4. The control box 4 then feeds this signal back to the host computer. The host computer processes the received distance signal appropriately and uses the current position of the slide 13 of the temperature control valve core 1 as the zero point of deformation. Then, the host computer sends a heating command to the control box 4, which controls the heater to heat the lubricating oil in the oil tank 21. The temperature sensing element 12 is heated evenly as the lubricating oil temperature rises. When the lubricating oil temperature rises above the opening value of the temperature control valve, the slide 13 of the temperature control valve core 1 will slowly move upward. The displacement sensor 33 converts this displacement into a displacement signal and sends it to the control box 4, which then transmits it back to the host computer. At the same time, the oil temperature signal detected by the temperature sensor is also transmitted back to the host computer through the control box 4. The host computer automatically generates the performance curve of the temperature control valve core 1 based on the received oil temperature signal and displacement signal. After the temperature control valve core 1 is fully opened (i.e. the slide 13 no longer moves upward), the heating of the lubricating oil is stopped. As the temperature of the lubricating oil drops, the slide 13 gradually falls back. The oil temperature signal and displacement signal can continue to be collected to understand the performance curve of the fall.

[0030] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The description of the above embodiments is only for the purpose of helping to understand the technical solutions and core ideas of this utility model. Those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. However, these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. An automatic measuring device for the performance of an oil cooler temperature control valve, characterized in that: It includes an oil bath, a detection component, and an electrical control box; the oil bath is equipped with an oil tank for holding lubricating oil and a heater for heating the lubricating oil in the oil tank. The oil tank is an open tank with an open top, and a temperature sensor for real-time detection of the lubricating oil temperature is installed inside the oil tank. The detection assembly includes a positioning base plate, a top plate, and multiple displacement sensors. The positioning base plate covers the top opening of the oil tank and has multiple positioning holes for the insertion of temperature-sensing elements of the temperature control valve core. The top plate is arranged parallel and spaced above the positioning base plate by support rods. The displacement sensors are installed at the bottom of the top plate and are arranged corresponding to the positioning holes. The heater, the temperature sensor, and the displacement sensor are all electrically connected to the electrical control box.

2. The automatic measuring device for the performance of an oil cooler temperature control valve according to claim 1, characterized in that: The bottom of the oil bath is equipped with multiple adjustable support legs.

3. The automatic measurement device for the performance of an oil cooler temperature control valve according to claim 1, characterized in that: The edge of the positioning hole is formed with a positioning groove that matches the valve seat of the temperature control valve core.

4. The automatic measuring device for the performance of an oil cooler temperature control valve according to claim 1, characterized in that: The bottom of the top plate is fixedly provided with multiple mounting supports for installing the displacement sensor.

5. An automatic measuring device for the performance of an oil cooler temperature control valve according to any one of claims 1-4, characterized in that: The electrical control box is electrically connected to the host computer, which is configured to automatically generate the performance curve of the temperature control valve core based on the oil temperature signal and displacement signal received by the electrical control box.

Images