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High-quality milk pasteurizing equipment valve response time measuring method

A technology of response time and sterilization equipment, applied in the direction of measuring device, measuring heat, testing of mechanical parts, etc., can solve the problem of insufficient control accuracy of pasteurized milk sterilization intensity, achieve optimization of closing time, optimization of fluid temperature change, measurement of simple method effect

Active Publication Date: 2017-08-18
NEW HOPE DAIRY HLDG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the lack of research on the response time of the pasteurization machine valve in the prior art, and to provide a method for measuring the response time of the pasteurization machine valve.

Method used

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  • High-quality milk pasteurizing equipment valve response time measuring method

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Effect test

Embodiment 1

[0040] Valve Response Time Test

[0041] Test process: 10.1 tons of soft water was used to simulate pasteurized fresh milk sterilization process, and the temperature was 85±2°C. Detect and analyze the working principle of the temperature sensor, connect an analog temperature resistor in parallel, and realize the valve opening and closing trigger through switch simulation. Select the V104 valve for testing: Manually set the sterilization temperature lower than the safe temperature. After the sensor receives the temperature change, press the stopwatch immediately. After seeing the V104 valve starts to move, press the stopwatch again. This time is the response time for the valve to close. Use a stopwatch Record the response time of return and send. And the specific numerical data are shown in Table 1-2.

[0042] Table 1: Valve Response Times

[0043] Valve status Response time (s) Function open 0.38 reflow close 0.24 send out open 0.40 re...

Embodiment 2

[0048] Optimization of valve response time for high-quality milk pasteurization equipment

[0049] (1) According to the response time of the valve opening or closing measured in embodiment 1, T 开0 =0.41,T 关0 =0.24, the maximum deviation is 0.05 seconds.

[0050] (2) Determination of the fluid flow rate in the pasteurization equipment: according to the conventional pasteurization process, input milk, time the time from the milk flow out of the outlet to the reception of 40L milk, milk flow time (S): 14.08s, 13.98s , 14.04s, 13.93s, 13.85s, 13.87s, with an average of 13.96s. Volume flow Q = received milk volume V / reception time T.

[0051] Calculate the distance from the outlet of the insulation pipe of the pasteurization equipment to the valve, and calculate the position from the outlet of the insulation pipe to the valve based on the inner diameter of the pipe, and calculate the internal volume V of the pipe 0 , V 0 =0.00314 cubic meters. Calculate the flow time T of m...

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Abstract

The invention discloses a high-quality milk pasteurizing equipment valve response time measuring method. The high-quality milk pasteurizing equipment valve response time measuring method comprises steps that (1) a temperature sensor of pasteurizing equipment is used for testing, and the working principle of the temperature sensor is analyzed, and a temperature adjusting circuit used for simulating a temperature change is set; (2) the temperature adjusting circuit used for simulating the temperature change is used to adjust the temperature of the pasteurizing equipment, and critical temperature parameters of opening or closing of valves are simulated, and timing is started by using a timer; (3) the time of the opening or the closing of the valve is observed, and the timing of the timer is stopped, and the response time of the opening or the closing of the valve is acquired; (4)the step (2) and the step (3) are repeated for a plurality of times, the response time of the opening or the closing of the valve is recorded, and a mean number is acquired, or a maximal number is acquired, and preferably, an arithmetic average is calculated; (5) the temperature adjusting circuit is recovered to be an original temperature sensor line, and an equipment state is recovered. Electric signals are simulated artificially to trigger the valve response, and the timing and the measuring are carried out directly, and therefore use is simple and effective.

Description

technical field [0001] The invention relates to a valve response time measurement method, in particular to a high-quality milk pasteurization equipment valve response time measurement method, which belongs to the equipment calibration research in the high-quality milk project technology improvement research project. For determining the response speed of the valve, it is of great significance to study the stability and reliability of the equipment. Background technique [0002] Pasteurized Milk is fresh milk processed by pasteurization. Generally, it has a short shelf life, but it retains most of its nutrition and taste. Compared with ultra-high temperature sterilized (UHT) milk, bus milk cannot completely kill all microorganisms due to its lower sterilization temperature, and has a short shelf life and needs to be stored in a low temperature environment. [0003] For pasteurized milk production equipment, pasteurization equipment needs to precisely control the length of ste...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/00G01K15/00
Inventor 刘丹袁雄雄
Owner NEW HOPE DAIRY HLDG
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