阅读说明：本技术 一种加热器燃烧试验系统及方法 (Heater combustion test system and method ) 是由 苏霄 刘海 于 2020-03-16 设计创作，主要内容包括：本发明公开了一种加热器燃烧试验系统包括稳压电源、变速调压模块、PLC控制器、模拟量模块、电磁泵驱动模块和人机界面,其中,稳压电源,用于加热器燃烧试验系统的供电调压；PLC控制器,用于读取寄存器数值和发送数字量信号；模拟量模块,用于接收PLC控制器发出的数字量信号,将数字量信号转变成模拟量电压信号；变速调压模块,用于接收模拟量模块发出的模拟量电压信号,将模拟量电压信号放大并转变成电压；电磁泵驱动模块,用于接收PLC控制器发出的数字量信号；人机界面,用于接收PLC控制器发出的数字量信号。能够实现加热器燃烧试验操作简单,试验可持续性强、周期短、提高了工作效率。(The invention discloses a heater combustion test system which comprises a voltage-stabilized power supply, a variable speed and voltage regulation module, a P L C controller, an analog quantity module, an electromagnetic pump driving module and a human-computer interface, wherein the voltage-stabilized power supply is used for power supply and voltage regulation of the heater combustion test system, the P L C controller is used for reading a register value and sending a digital quantity signal, the analog quantity module is used for receiving the digital quantity signal sent by the P L C controller and converting the digital quantity signal into an analog quantity voltage signal, the variable speed and voltage regulation module is used for receiving the analog quantity voltage signal sent by the analog quantity module and amplifying and converting the analog quantity voltage signal into voltage, the electromagnetic pump driving module is used for receiving the digital quantity signal sent by the P L C controller, and the human-computer interface is used for receiving the digital quantity signal sent by the P L C controller.)

1. A heater combustion test system is characterized by comprising a voltage-stabilized power supply, a variable speed and pressure regulating module, a P L C controller, an analog quantity module, an electromagnetic pump driving module and a human-computer interface, wherein,

the voltage-stabilizing power supply is used for power supply voltage regulation of the heater combustion test system;

a P L C controller for reading register values and sending digital signals;

the analog quantity module is used for receiving a digital quantity signal sent by the P L C controller and converting the digital quantity signal into an analog quantity voltage signal;

the variable speed voltage regulating module is used for receiving the analog quantity voltage signal sent by the analog quantity module, amplifying the analog quantity voltage signal and converting the analog quantity voltage signal into voltage;

the electromagnetic pump driving module is used for receiving a digital quantity signal sent by the P L C controller;

and the human-computer interface is used for receiving the digital quantity signal sent by the P L C controller.

2. The heater combustion test system according to claim 1, wherein two variable speed and pressure regulating modules are connected to the output end of the analog quantity module, a main motor and an ignition plug are respectively connected to the output ends of the two variable speed and pressure regulating modules, and an electromagnetic pump is connected to the output end of the electromagnetic pump driving module.

3. The heater combustion testing system of claim 1, wherein the analog quantity module converts a digital quantity signal into a 0-10V analog quantity voltage signal, and the variable speed voltage regulating module converts a voltage signal into a 0-24V voltage.

4. The heater combustion testing system of claim 1, wherein the human-machine interface simultaneously sets three sets of test parameters for sequential testing.

5. The heater burn test system of claim 1 wherein the internally performed linear transformations of the register values and the analog voltage values are linear transformations.

6. A heater combustion test method is characterized by comprising the following steps:

s1, setting load test parameters, voltage and frequency of ignition plug power-on preheating time, first-stage test time, second-stage test time and third-stage test time on a human-computer interface, and enabling a P L C controller to give corresponding numerical values to corresponding registers;

s2, the P L C controller receives a starting signal, the ignition plug is electrified and preheated under a set voltage parameter, after preheating, the main motor and the electromagnetic pump operate according to a first stage, a first stage combustion test is started, the ignition plug continues to preheat for 30S after the first stage combustion test is started, preheating is stopped, and the combustion flame form is recorded;

s3: after the first-stage test time is finished, the main motor and the electromagnetic pump operate according to the second-stage test, and the combustion flame form is recorded;

s4: after the second stage test time is finished, the main motor and the electromagnetic pump operate according to the third stage test, and the combustion flame form is recorded;

s5: after the 300S test time in the third stage is finished, the main motor operates, and the electromagnetic pump stops operating;

s6: the automatic cooling mode is started and the main motor 90S is stopped.

7. The heater burn test method of claim 6 wherein the speed of rotation of the main motor is controlled by voltage and the pulses of the electromagnetic pump are controlled by frequency.

Technical Field

The invention relates to the technical field of heaters, in particular to a heater combustion test system and a heater combustion test method.

Background

In the application field of heaters, the exhaust smoke intensity is an important index for judging whether products are qualified or not, the heaters must ensure that fuel oil is fully combusted, the heaters have no carbon deposition and no dense smoke, and the proper air-fuel ratio ensures that the fuel oil is fully combusted, which is an important precondition for the functional performance of the heaters to reach the standard.

The combustion test is an important and necessary test item in the development stage of a new product in the early stage, and a large number of combustion tests are required to search for the most appropriate air-oil ratio.

At present, a program is written into a controller in advance, the controller is connected with a heater host, the voltage of a stabilized voltage power supply is adjusted to carry out a combustion test, the program is written once in the controller, only a group of tests of air-oil ratio can be carried out, and if the air-oil ratio is not proper and the combustion effect is not good, the program needs to be written again and then the tests are carried out.

The system and the method are complex to operate, the test sustainability is poor, the period for obtaining the optimal test parameters is long, the test efficiency is low, the development period of the whole product is prolonged, and the requirements of automation, high efficiency and convenience cannot be met.

An effective solution to the problems in the related art has not been proposed yet.

Disclosure of Invention

Aiming at the technical problems in the related art, the invention provides a heater combustion test system and a heater combustion test method, which can realize simple operation of heater combustion test, strong test sustainability, short period and improvement of working efficiency.

In order to achieve the technical purpose, the technical scheme of the invention is realized as follows:

a heater combustion test system comprises a voltage-stabilized power supply, a variable speed and pressure regulating module, a P L C controller, an analog quantity module, an electromagnetic pump driving module and a human-computer interface, wherein,

the voltage-stabilizing power supply is used for power supply voltage regulation of the heater combustion test system;

a P L C controller for reading register values and sending digital signals;

the analog quantity module is used for receiving a digital quantity signal sent by the P L C controller and converting the digital quantity signal into an analog quantity voltage signal;

the variable speed voltage regulating module is used for receiving the analog quantity voltage signal sent by the analog quantity module, amplifying the analog quantity voltage signal and converting the analog quantity voltage signal into voltage;

the electromagnetic pump driving module is used for receiving a digital quantity signal sent by the P L C controller;

and the human-computer interface is used for receiving the digital quantity signal sent by the P L C controller.

Furthermore, the output end of the analog quantity module is connected with two speed and pressure regulating modules, the output ends of the speed and pressure regulating modules are respectively connected with a main motor and an ignition plug, and the output end of the electromagnetic pump driving module is connected with an electromagnetic pump.

Further, the analog quantity module converts the digital quantity signal into a 0-10V analog quantity voltage signal, and the variable speed voltage regulating module converts the voltage signal into a 0-24V voltage.

Further, the human-computer interface simultaneously sets three groups of test parameters for sequential tests.

Further, the internally performed multi-segment linear transformation of the register value and the analog quantity voltage value is linear transformation.

In another aspect of the present invention, a heater combustion test method is provided, which includes the following steps:

s1, setting load test parameters, voltage and frequency of ignition plug power-on preheating time, first-stage test time, second-stage test time and third-stage test time on a human-computer interface, and enabling a P L C controller to give corresponding numerical values to corresponding registers;

s2, the P L C controller receives a starting signal, the ignition plug is electrified and preheated under a set voltage parameter, after preheating, the main motor and the electromagnetic pump operate according to a first stage, a first stage combustion test is started, the ignition plug continues to preheat for 30S after the first stage combustion test is started, preheating is stopped, and the combustion flame form is recorded;

s3: after the first-stage test time is finished, the main motor and the electromagnetic pump operate according to the second-stage test, and the combustion flame form is recorded;

s4: after the second stage test time is finished, the main motor and the electromagnetic pump operate according to the third stage test, and the combustion flame form is recorded;

s5: after the 300S test time in the third stage is finished, the main motor operates, and the electromagnetic pump stops operating;

s6: the automatic cooling mode is started and the main motor 90S is stopped.

Further, the rotation speed of the main motor is controlled by voltage, and the pulse of the electromagnetic pump is controlled by frequency.

The invention has the beneficial effects that:

the P L C controller and the human-computer interface realize that 3 groups of wind-oil proportioning parameter tests are carried out according to the time sequence, realize that the test parameters are adjustable, the test is continuous and flexible under multiple groups of parameters, the period for obtaining the optimal test parameters is shortened, the test efficiency is improved, and the development period of the whole product is shortened.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic diagram of a heater burn test system according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.

Referring to fig. 1, a heater combustion test system according to an embodiment of the present invention includes a regulated power supply, a variable speed and pressure regulating module, a P L C controller, an analog quantity module, an electromagnetic pump driving module, and a human-computer interface, wherein,

the voltage-stabilizing power supply is used for power supply voltage regulation of the heater combustion test system;

a P L C controller for reading register values and sending digital signals;

the analog quantity module is used for receiving a digital quantity signal sent by the P L C controller and converting the digital quantity signal into an analog quantity voltage signal;

the variable speed voltage regulating module is used for receiving the analog quantity voltage signal sent by the analog quantity module, amplifying the analog quantity voltage signal and converting the analog quantity voltage signal into voltage;

the electromagnetic pump driving module is used for receiving a digital quantity signal sent by the P L C controller;

and the human-computer interface is used for receiving the digital quantity signal sent by the P L C controller.

In a specific embodiment of the invention, the output end of the analog quantity module is connected with two variable speed and pressure regulating modules, the output ends of the two variable speed and pressure regulating modules are respectively connected with a main motor and an ignition plug, and the output end of the electromagnetic pump driving module is connected with an electromagnetic pump.

The output end of the P L C controller is connected with the input end of the electromagnetic pump driving module, the output end of the electromagnetic pump driving module is connected with the electromagnetic pump, and a human-computer interface communication port is connected with a P L C communication port;

in one embodiment of the invention, the analog quantity module converts the digital quantity signal into a 0-10V analog quantity voltage signal, and the variable speed voltage regulating module converts the voltage signal into a 0-24V voltage.

In an embodiment of the invention, the human-computer interface simultaneously sets three sets of test parameters for sequential tests.

In an embodiment of the present invention, the internally performed multi-segment linear transformation of the register value and the analog voltage value is a linear transformation.

In another aspect of the present invention, a heater burning test method is provided, which includes the steps of:

s1, setting load test parameters, voltage and frequency of ignition plug power-on preheating time, first-stage test time, second-stage test time and third-stage test time on a human-computer interface, and enabling a P L C controller to give corresponding numerical values to corresponding registers;

s2, the P L C controller receives a starting signal, the ignition plug is electrified and preheated under a set voltage parameter, after preheating, the main motor and the electromagnetic pump operate according to a first stage, a first stage combustion test is started, the ignition plug continues to preheat for 30S after the first stage combustion test is started, preheating is stopped, and the combustion flame form is recorded;

s3: after the first-stage test time is finished, the main motor and the electromagnetic pump operate according to the second-stage test, and the combustion flame form is recorded;

s4: after the second stage test time is finished, the main motor and the electromagnetic pump operate according to the third stage test, and the combustion flame form is recorded;

s5: after the 300S test time in the third stage is finished, the main motor operates, and the electromagnetic pump stops operating;

s6: the automatic cooling mode is started and the main motor 90S is stopped.

In a particular embodiment of the invention, the rotational speed of the main motor is controlled by a voltage and the pulses of the electromagnetic pump are controlled by a frequency.

In one embodiment of the invention, the ignition plug is electrified for a preheating time of 30S; the first stage test time is 50S, the voltage is set to be 9V, and the frequency is set to be 3.6 HZ; the second stage test time is 180S, the voltage is set to be 18V, and the frequency is set to be 4.5 HZ; the third stage test time was 300S, the voltage was set to 24V and the frequency was set to 5.2 HZ.

The combustion conditions of the heater in the test stages are respectively recorded, and the optimal voltage parameter and the optimal frequency parameter are selected, so that the method is simple compared with the previous steps, the test progress is accelerated, and the development period of the whole product is shortened.

In order to facilitate understanding of the above-described technical aspects of the present invention, the above-described technical aspects of the present invention will be described in detail below in terms of specific usage.

When the wind-oil ratio parameter test device is used, after a P L C controller receives a starting signal, the P L C controller sends a command to an analog quantity module, an electromagnetic pump driving module and a human-computer interface, the P L C controller communicates a register value to the analog quantity module, the register value is converted into a 0-10V analog quantity voltage signal, the signal is amplified and converted into a 0-24V voltage signal through a variable speed and voltage regulating module, the register value and the analog quantity voltage value are subjected to multi-section linear conversion inside, the P L C controller drives a load to work according to the set parameters, 3 groups of wind-oil ratio parameter tests performed according to a time sequence are realized by utilizing a PWM technology and the multi-section linear conversion of the register value and the analog quantity voltage value, and the optimal combustion parameters can be obtained quickly.

In conclusion, by means of the technical scheme, the test continuity and the flexibility under multiple groups of parameters shorten the period of obtaining the optimal test parameters, improve the test efficiency and shorten the development period of the whole product.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.