JPS62246700A - Operation control device for steam using apparatus - Google Patents

Abstract

PURPOSE:To control automatically the quality of products by measuring the steam consumption, steam pressure, condensate temperature, and the temperature of products. CONSTITUTION:The steam generated by a boiler 1 is sent to steam using apparatus 5 and 6 through steam lead pipes 3, 4 branched from a main steam pipe 2. The pressure sensors 17, 18 which measure the steam pressures in the steam lead pipes 3, 4, and product temperature sensors 19, 20 which measure the temperatures of products in steam using apparatus 5, 6 are electrically connected to condensate flow meters 13, 14. The condensate flow meters 13, 14 measure the flow rate of condensate, and measure and display the steam consumptions consumed by the steam using apparatus 5, 6. The data thus obtained are output by pen recorders 21, 22.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an operation control system for steam-using equipment that enables the steam-using equipment to produce higher quality and larger quantities with less steam consumption.

The steam produced in the boiler is sent to multiple steam-using devices and used as a heat source for heating, evaporation, heat retention, cooling, etc., to produce products.

Understanding boiler evaporation (steam consumption) can help you save energy and produce products by minimizing steam (fuel) consumption, maximizing production per unit time, and producing higher quality products. important for improving performance and quality.

Conventional technology Traditionally, boiler evaporation time has been calculated by subtracting boiler can water blowout from the value of the water supply meter installed in the boiler, or by calculating boiler efficiency from the amount of fuel consumed to operate the boiler. I thought about it and understood it.

Additionally, a flow meter was installed to measure steam consumption. This will be explained with reference to FIG.

The steam produced in the boiler 31 is passed through steam introduction pipes 33 and 34 branched from the main steam pipe 32 to steam-using equipment 35 and 36.
sent to. The steam that has done work such as heating in the steam-using equipment 35 and 36 is combined with condensate and is sent to the steam traps 37 and 3.
Eliminated at 8.

The steam introduction pipes 33 and 34 are provided with pressure reducing valves 39 and 40 that reduce the pressure of steam supplied to the steam using devices 35 and 36 to a desired pressure, and valves 41 and 42 that control the supply of steam.

A steam flow meter 43 is arranged in the steam main pipe 32, and the steam main pipe 3
2. Measure the amount of steam flowing through 2 to understand the amount of steam consumed.

Problems to be solved by the present invention However, simply determining the amount of boiler evaporation (steam consumption) does not reveal how much steam is consumed by each steam-using device, I don't understand the relationship between gender and quality.

The technical problem of the present invention is therefore to make it possible to manage the operation of steam-using equipment in relation to steam consumption, productivity and quality for each steam-using equipment.

Means for Solving the Problems The technical means of the present invention taken to solve the above-mentioned technical problems is to arrange a flow meter for each steam-using device to measure and display steam consumption, and to measure and display steam pressure. A means is provided to measure and display the condensate temperature and product temperature, and the amount of heat is calculated and displayed from the steam consumption, steam pressure, and condensate temperature, and the control valves that adjust the steam supplied to the steam-using equipment are opened and closed. It is designed to be controlled based on the above measured values.

action The operation of the above technical means is as follows.

Since a flow meter is attached to each steam-using device, the amount of steam consumed by each steam-using device can be measured. Productivity data can be collected separately per unit time. In addition, since it measures the temperature of the product and the steam pressure and condensate temperature, it is possible to measure the amount of heat consumed by each steam-using device from the steam consumption, steam pressure, and condensate temperature, making it possible to control product quality. Data is obtained.

Therefore, the operation of steam-using equipment can be managed based on these data.

Effects of the invention Since steam consumption, steam pressure, condensate temperature, and product temperature are measured, these measurement data can be automatically displayed all at once on a pen recorder, etc., and the operation of individual steam-using equipment can be improved. You can understand the status at a glance.

Furthermore, since the opening and closing of the control valve is controlled according to the amount of steam consumed, the steam pressure, or the temperature of the product, the quality of the product can be automatically controlled.

Embodiment An embodiment illustrating a specific example of the above technical means will be described (see FIG. 1).

Steam produced in the boiler 1 is sent to steam-using devices 5 and 6 through steam introduction pipes 3 and 4 branched from the main steam pipe 2.

The steam that has done work such as heating in the steam-using equipment 5.6 becomes condensate and is automatically removed by the steam traps 7 and 8.

The steam introduction pipes 3 and 4 are provided with pressure reducing valves 9 and 10 that reduce the pressure of steam supplied to the steam using devices 5 and 6 to a desired pressure, and control valves 11 and 12 that control the supply of steam.

Condensate flowmeters 13 and 14 are placed between the steam using devices 5 and 6 and the steam traps 7 and 8. Condensate flow rate 13/14
Condensate temperature sensors 15 and 16 are built in to measure the temperature of condensate.

Pressure sensor 1 that measures steam pressure in steam introduction pipes 3 and 4
7 and 18, and product temperature sensors 19 and 20 that measure the temperature of the products of steam-using equipment 5 and 6, and condensate flow meters 13 and 1.
4. In addition, condensate □ flow meter 13, 14
The control valves 11 and 12 and the pen recorders 21 and 22 are electrically connected to each other.

Condensate flow meters 13 and 14 measure the flow rate of condensate and measure and display the steam consumption ports consumed by steam using equipment 5 and 6', as well as the pressure values detected by pressure sensors 17 and 18 and the product temperature sensor. 19/20 and condensate 1 degree sensor 15/
The temperature value detected in step 16 is displayed. Further, these measured values are output as voltages to the pen recorders 21 and 22.

In addition, the condensate flow meters 13 and 14 display the hot state based on the relationship between the steam consumption, steam pressure, and condensate temperature, that is, the steam consumption, steam enthalpy, and condensate enthalpy, and also display the steam consumption. Opening/closing control of control valves 11 and 12 for regulating the steam supplied to the steam-using devices 5 and 6 is performed based on the steam pressure and temperature of the product.

[Brief explanation of drawings]

FIG. 1 is a diagram showing an outline of an embodiment of the steam consumption measuring device according to the present invention and its piping state, and FIG. 2 is a diagram showing the piping state of a conventional steam flowmeter. 5 and 6: Steam using equipment 11 and 12: Control valves 13 and 14: Condensate flow meter 15 and 16: Condensate temperature sensor 17 and 18: Pressure sensor

Claims (1)

[Claims] 1. A flow meter is placed in each steam-using device to measure and display steam consumption, and a means is provided to measure and display steam pressure, condensate temperature, and product temperature. An operation management device for steam-using equipment, which calculates and displays the amount of heat from the measured value, and controls the opening and closing of a control valve that regulates the steam supplied to the steam-using equipment based on the measured value.