阅读说明：本技术 一种测温和取样控制方法 (Temperature measurement and sampling control method ) 是由 王景娟 吕永学 张丙龙 曾卫民 王和兵 吴耀春 王胜 秦登平 赵长亮 孟志铎 张 于 2019-09-04 设计创作，主要内容包括：本发明公开了一种测温和取样控制方法,应用于钢包测温取样系统,所述钢包测温取样系统包括控制器、钢包测温系统和钢包取样系统；所述方法包括：当所述控制器接收到触发信号时,控制接通所述第一接触器和/或第二接触器,同时断开第三接触器和第四接触器；所述控制器向所述测温变频器发送测温控制信号,以控制所述测温电机驱动所述测温执行机构进行测温；和/或,所述控制器向所述取样变频器发送取样控制信号,以控制所述取样电机驱动所述取样执行机构进行取样；避免因取样变频器或测温变频器故障时,维修处理不及时,造成测温或是取样的枪体刚好停留在高温的钢水中,不仅造成枪体烧损,同时阻碍钢水车运行,降低生产效率。(The invention discloses a temperature measurement and sampling control method, which is applied to a ladle temperature measurement sampling system, wherein the ladle temperature measurement sampling system comprises a controller, a ladle temperature measurement system and a ladle sampling system; the method comprises the following steps: when the controller receives a trigger signal, controlling to switch on the first contactor and/or the second contactor, and simultaneously switching off the third contactor and the fourth contactor; the controller sends a temperature measurement control signal to the temperature measurement frequency converter so as to control the temperature measurement motor to drive the temperature measurement actuating mechanism to measure temperature; and/or the controller sends a sampling control signal to the sampling frequency converter so as to control the sampling motor to drive the sampling actuating mechanism to sample; avoid when taking a sample converter or temperature measurement converter trouble, the maintenance is handled untimely, causes the rifle body of temperature measurement or sample just to stop in the molten steel of high temperature, not only causes the rifle body to burn out, hinders the molten steel car operation simultaneously, reduces production efficiency.)

1. A temperature measurement and sampling control method is characterized in that the method is applied to a ladle temperature measurement sampling system, and the ladle temperature measurement sampling system comprises a controller, a ladle temperature measurement system and a ladle sampling system; the ladle temperature measurement system comprises a temperature measurement motor for driving a temperature measurement actuating mechanism, temperature measurement position detection equipment for detecting the position of the temperature measurement actuating mechanism and a temperature measurement frequency converter for controlling the temperature measurement motor; the ladle sampling system comprises a sampling motor for driving a sampling actuating mechanism, sampling position detection equipment for detecting the position of the sampling actuating mechanism and a sampling frequency converter for controlling the sampling motor; wherein the content of the first and second substances,

a first contactor is connected between the temperature measuring frequency converter and the temperature measuring motor, a second contactor is connected between the sampling frequency converter and the sampling motor, a third contactor is connected between the temperature measuring frequency converter and the sampling motor, and a fourth contactor is connected between the sampling frequency converter and the temperature measuring motor;

the controller is respectively and electrically connected with the temperature measuring position detection device, the temperature measuring frequency converter, the sampling position detection device, the sampling frequency converter, the first contactor, the second contactor, the third contactor and the fourth contactor;

the method comprises the following steps:

when the controller receives a trigger signal, controlling to switch on the first contactor and/or the second contactor, and simultaneously switching off the third contactor and the fourth contactor;

the controller sends a temperature measurement control signal to the temperature measurement frequency converter so as to control the temperature measurement motor to drive the temperature measurement actuating mechanism to measure temperature; and/or the controller sends a sampling control signal to the sampling frequency converter so as to control the sampling motor to drive the sampling actuating mechanism to sample;

wherein the content of the first and second substances,

when the controller receives a fault signal of the temperature measuring frequency converter, judging whether the sampling frequency converter is in a standby state or not and judging whether the position of the sampling execution mechanism is higher than a first preset height or not;

if the sampling frequency converter is in a standby state and the position of the sampling execution mechanism is higher than a first preset height, controlling to switch on the fourth contactor and switch off the first contactor, so that the sampling frequency converter controls the temperature measurement execution mechanism to complete temperature measurement;

when the controller receives a fault signal of the sampling frequency converter, judging whether the temperature measurement frequency converter is in a standby state or not and judging whether the position of the temperature measurement actuating mechanism is higher than a second preset height or not;

and if the temperature measurement frequency converter is in a standby state and the position of the temperature measurement actuating mechanism is higher than a second preset height, controlling to switch on the third contactor and switch off the second contactor, so that the temperature measurement frequency converter controls the sampling actuating mechanism to finish sampling.

2. The method of claim 1, wherein after said determining whether the sampling inverter is in a standby state and determining whether the position of the sampling actuator is above a first predetermined height, the method further comprises:

if the sampling frequency converter is in the running state, after the sampling execution mechanism finishes primary sampling and the position of the sampling execution mechanism is higher than the first preset height, the fourth contactor is controlled to be connected, the first contactor is disconnected, and the sampling frequency converter controls the temperature measurement execution mechanism to finish temperature measurement.

3. The method of claim 1 or 2, wherein after the sampling frequency converter controls the temperature measurement actuator to complete temperature measurement, the method further comprises:

and controlling to disconnect the fourth contactor and connect the first contactor to electrically connect the temperature measurement frequency converter with the temperature measurement actuating mechanism.

4. The method of claim 1, wherein after the determining whether the thermometric inverter is in a standby state and the determining whether the position of the thermometric actuator is above a second predetermined height, the method further comprises:

if the temperature measurement frequency converter is in the running state, after the temperature measurement executing mechanism finishes one-time sampling and the position of the temperature measurement executing mechanism is higher than the second preset height, the third contactor is controlled to be connected, the second contactor is disconnected, and the temperature measurement frequency converter controls the sampling executing mechanism to finish sampling.

5. The method of claim 1 or 4, wherein after the thermometric frequency converter controls the sampling actuator to complete sampling, the method further comprises:

and controlling to disconnect the third contactor and connect the second contactor to electrically connect the sampling frequency converter with the sampling and measuring mechanism.

6. The method of claim 1 or 2, wherein the ladle sampling system further comprises a sampling position encoder;

the method for judging whether the position of the sampling actuating mechanism is higher than a first preset height comprises the following steps:

and the controller judges whether the position of the sampling execution mechanism is higher than a first preset height or not according to the position information of the sampling execution structure provided by the sampling position encoder.

7. The method of claim 6, wherein the sampling actuator is a sampling gun.

8. The method of claim 1 or 4, wherein the thermometric sampling system further comprises a thermometric position encoder;

the method for judging whether the position of the temperature measurement actuating mechanism is higher than a second preset height comprises the following steps:

and the controller judges whether the position of the temperature measurement actuating mechanism is higher than a second preset height or not according to the position information of the temperature measurement actuating mechanism provided by the temperature measurement position encoder.

9. The method of claim 8, wherein the thermometry actuator is a thermometry gun.

10. The method of claim 1, wherein the first predetermined height and the second predetermined height are both 11.3 m.

Technical Field

The invention relates to the technical field of steel making, in particular to a temperature measurement and sampling control method.

Background

The steel ladles of the steel converter need temperature measurement and sampling, and the temperature measurement and the sampling are respectively completed by the automatic control of a temperature measurement gun and a sampling gun and a control structure thereof, so that the unattended operation on site is realized.

When the converter that is responsible for control temperature measurement rifle or the converter itself trouble of being responsible for control sampling rifle, maintainer arrive the scene and handle the fastest also must several minutes, probably cause the rifle body of temperature measurement or sample just to stop in the molten steel of high temperature, not only cause the rifle body to burn and lose, hinder the molten steel car operation simultaneously, reduce production efficiency.

Disclosure of Invention

The embodiment of the application provides a temperature measurement and sampling control method, and solves the technical problems that the existing temperature measurement and sampling method is easy to cause gun body burning loss and block molten steel car operation.

The application provides the following technical scheme through an embodiment of the application:

a temperature measurement and sampling control method is applied to a ladle temperature measurement sampling system, and the ladle temperature measurement sampling system comprises a controller, a ladle temperature measurement system and a ladle sampling system; the ladle temperature measurement system comprises a temperature measurement motor for driving a temperature measurement actuating mechanism, temperature measurement position detection equipment for detecting the position of the temperature measurement actuating mechanism and a temperature measurement frequency converter for controlling the temperature measurement motor; the ladle sampling system comprises a sampling motor for driving a sampling actuating mechanism, sampling position detection equipment for detecting the position of the sampling actuating mechanism and a sampling frequency converter for controlling the sampling motor; wherein the content of the first and second substances,

a first contactor is connected between the temperature measuring frequency converter and the temperature measuring motor, a second contactor is connected between the sampling frequency converter and the sampling motor, a third contactor is connected between the temperature measuring frequency converter and the sampling motor, and a fourth contactor is connected between the sampling frequency converter and the temperature measuring motor;

the controller is respectively and electrically connected with the temperature measuring position detection device, the temperature measuring frequency converter, the sampling position detection device, the sampling frequency converter, the first contactor, the second contactor, the third contactor and the fourth contactor;

the method comprises the following steps:

when the controller receives a trigger signal, controlling to switch on the first contactor and/or the second contactor, and simultaneously switching off the third contactor and the fourth contactor;

the controller sends a temperature measurement control signal to the temperature measurement frequency converter so as to control the temperature measurement motor to drive the temperature measurement actuating mechanism to measure temperature; and/or the controller sends a sampling control signal to the sampling frequency converter so as to control the sampling motor to drive the sampling actuating mechanism to sample;

wherein the content of the first and second substances,

when the controller receives a fault signal of the temperature measuring frequency converter, judging whether the sampling frequency converter is in a standby state or not and judging whether the position of the sampling execution mechanism is higher than a first preset height or not;

if the sampling frequency converter is in a standby state and the position of the sampling execution mechanism is higher than a first preset height, controlling to switch on the fourth contactor and switch off the first contactor, so that the sampling frequency converter controls the temperature measurement execution mechanism to complete temperature measurement;

when the controller receives a fault signal of the sampling frequency converter, judging whether the temperature measurement frequency converter is in a standby state or not and judging whether the position of the temperature measurement actuating mechanism is higher than a second preset height or not;

and if the temperature measurement frequency converter is in a standby state and the position of the temperature measurement actuating mechanism is higher than a second preset height, controlling to switch on the third contactor and switch off the second contactor, so that the temperature measurement frequency converter controls the sampling actuating mechanism to finish sampling.

Optionally, after the determining whether the sampling frequency converter is in a standby state and the determining whether the position of the sampling execution mechanism is higher than a first preset height, the method further includes:

if the sampling frequency converter is in the running state, after the sampling execution mechanism finishes primary sampling and the position of the sampling execution mechanism is higher than the first preset height, the fourth contactor is controlled to be connected, the first contactor is disconnected, and the sampling frequency converter controls the temperature measurement execution mechanism to finish temperature measurement.

Optionally, after the sampling frequency converter controls the temperature measurement executing mechanism to complete temperature measurement, the method further includes:

and controlling to disconnect the fourth contactor and connect the first contactor to electrically connect the temperature measurement frequency converter with the temperature measurement actuating mechanism.

Optionally, after the determining whether the temperature measurement frequency converter is in the standby state and the determining whether the position of the temperature measurement executing mechanism is higher than a second preset height, the method further includes:

if the temperature measurement frequency converter is in the running state, after the temperature measurement executing mechanism finishes one-time sampling and the position of the temperature measurement executing mechanism is higher than the second preset height, the third contactor is controlled to be connected, the second contactor is disconnected, and the temperature measurement frequency converter controls the sampling executing mechanism to finish sampling.

Optionally, after the temperature measuring frequency converter controls the sampling execution mechanism to complete sampling, the method further includes:

and controlling to disconnect the third contactor and connect the second contactor to electrically connect the sampling frequency converter with the sampling and measuring mechanism.

Optionally, the ladle sampling system further comprises a sampling position encoder;

the method for judging whether the position of the sampling actuating mechanism is higher than a first preset height comprises the following steps:

and the controller judges whether the position of the sampling execution mechanism is higher than a first preset height or not according to the position information of the sampling execution structure provided by the sampling position encoder.

Optionally, the sampling actuator is a sampling gun.

Optionally, the thermometric sampling system further comprises a thermometric position encoder;

the method for judging whether the position of the temperature measurement actuating mechanism is higher than a second preset height comprises the following steps:

and the controller judges whether the position of the temperature measurement actuating mechanism is higher than a second preset height or not according to the position information of the temperature measurement actuating mechanism provided by the temperature measurement position encoder.

Optionally, the temperature measurement executing mechanism is a temperature measurement gun.

Optionally, the first preset height and the second preset height are both 11.3 m.

One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

the method is applied to a ladle temperature measurement sampling system, and the ladle temperature measurement sampling system comprises a controller, a ladle temperature measurement system and a ladle sampling system; the ladle temperature measurement system comprises a temperature measurement motor for driving a temperature measurement actuating mechanism, temperature measurement position detection equipment for detecting the position of the temperature measurement actuating mechanism and a temperature measurement frequency converter for controlling the temperature measurement motor; the ladle sampling system comprises a sampling motor for driving a sampling actuating mechanism, sampling position detection equipment for detecting the position of the sampling actuating mechanism and a sampling frequency converter for controlling the sampling motor; the temperature measuring device comprises a temperature measuring transducer, a temperature measuring motor, a sampling transducer, a first contactor, a second contactor, a third contactor, a fourth contactor, a third contactor and a fourth contactor, wherein the first contactor is connected between the temperature measuring transducer and the temperature measuring motor; the controller is respectively and electrically connected with the temperature measuring position detection device, the temperature measuring frequency converter, the sampling position detection device, the sampling frequency converter, the first contactor, the second contactor, the third contactor and the fourth contactor; the method comprises the following steps: when the controller receives a trigger signal, controlling to switch on the first contactor and/or the second contactor, and simultaneously switching off the third contactor and the fourth contactor; the controller sends a temperature measurement control signal to the temperature measurement frequency converter so as to control the temperature measurement motor to drive the temperature measurement actuating mechanism to measure temperature; and/or the controller sends a sampling control signal to the sampling frequency converter so as to control the sampling motor to drive the sampling actuating mechanism to sample; when the controller receives a fault signal of the temperature measuring frequency converter, judging whether the sampling frequency converter is in a standby state or not and judging whether the position of the sampling execution mechanism is higher than a first preset height or not; if the sampling frequency converter is in a standby state and the position of the sampling execution mechanism is higher than a first preset height, controlling to switch on the fourth contactor and switch off the first contactor, so that the sampling frequency converter controls the temperature measurement execution mechanism to complete temperature measurement; when the controller receives a fault signal of the sampling frequency converter, judging whether the temperature measurement frequency converter is in a standby state or not and judging whether the position of the temperature measurement actuating mechanism is higher than a second preset height or not; and if the temperature measurement frequency converter is in a standby state and the position of the temperature measurement actuating mechanism is higher than a second preset height, controlling to switch on the third contactor and switch off the second contactor, so that the temperature measurement frequency converter controls the sampling actuating mechanism to finish sampling. Because third contactor and fourth contactor have been increased at original ladle temperature measurement system and ladle sampling system, make when the temperature measurement converter trouble, can judge and call the sample converter through the controller immediately and carry out temperature measurement control to the temperature measurement motor, or when the sample converter trouble, can judge and call the temperature measurement converter through the controller immediately and carry out sample control to the sample motor, thereby when avoiding because of sample converter or temperature measurement converter trouble, the maintenance is handled untimely, cause the rifle body of temperature measurement or sample just to stop in the molten steel of high temperature, not only cause the rifle body to burn, hinder the molten steel car operation simultaneously, and the production efficiency is reduced.

Drawings

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

FIG. 1 is a diagram of a thermometric sampling control system in one embodiment of the present invention;

FIG. 2 is a flow chart of a thermometry and sampling control method in one embodiment of the present invention.

Detailed Description

The embodiment of the application provides a temperature measurement and sampling control method and system, and solves the technical problems that in the prior art, a gun body is easily burnt and the running of a molten steel car is blocked by the temperature measurement and sampling method.

In order to solve the technical problems, the general idea of the embodiment of the application is as follows:

a temperature measurement and sampling control method is applied to a ladle temperature measurement sampling system, and the ladle temperature measurement sampling system comprises a controller, a ladle temperature measurement system and a ladle sampling system; the ladle temperature measurement system comprises a temperature measurement motor for driving a temperature measurement actuating mechanism, temperature measurement position detection equipment for detecting the position of the temperature measurement actuating mechanism and a temperature measurement frequency converter for controlling the temperature measurement motor; the ladle sampling system comprises a sampling motor for driving a sampling actuating mechanism, sampling position detection equipment for detecting the position of the sampling actuating mechanism and a sampling frequency converter for controlling the sampling motor; the temperature measuring device comprises a temperature measuring transducer, a temperature measuring motor, a sampling transducer, a first contactor, a second contactor, a third contactor, a fourth contactor, a third contactor and a fourth contactor, wherein the first contactor is connected between the temperature measuring transducer and the temperature measuring motor; the controller is respectively and electrically connected with the temperature measuring position detection device, the temperature measuring frequency converter, the sampling position detection device, the sampling frequency converter, the first contactor, the second contactor, the third contactor and the fourth contactor;

the method comprises the following steps: when the controller receives a trigger signal, controlling to switch on the first contactor and/or the second contactor, and simultaneously switching off the third contactor and the fourth contactor; the controller sends a temperature measurement control signal to the temperature measurement frequency converter so as to control the temperature measurement motor to drive the temperature measurement actuating mechanism to measure temperature; and/or the controller sends a sampling control signal to the sampling frequency converter so as to control the sampling motor to drive the sampling actuating mechanism to sample; when the controller receives a fault signal of the temperature measuring frequency converter, judging whether the sampling frequency converter is in a standby state or not and judging whether the position of the sampling execution mechanism is higher than a first preset height or not; if the sampling frequency converter is in a standby state and the position of the sampling execution mechanism is higher than a first preset height, controlling to switch on the fourth contactor and switch off the first contactor, so that the sampling frequency converter controls the temperature measurement execution mechanism to complete temperature measurement; when the controller receives a fault signal of the sampling frequency converter, judging whether the temperature measurement frequency converter is in a standby state or not and judging whether the position of the temperature measurement actuating mechanism is higher than a second preset height or not; and if the temperature measurement frequency converter is in a standby state and the position of the temperature measurement actuating mechanism is higher than a second preset height, controlling to switch on the third contactor and switch off the second contactor, so that the temperature measurement frequency converter controls the sampling actuating mechanism to finish sampling.

It should be noted that, in general, the ladle temperature measuring system and the ladle sampling system used on site are the same in structure, even the same type of equipment is used, and therefore, they can be used as backup for each other.

In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.

First, it is stated that the term "and/or" appearing herein is merely one type of associative relationship that describes an associated object, meaning that three types of relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

The embodiment provides a temperature measurement and sampling control method, which is applied to a ladle temperature measurement sampling system, and referring to fig. 1, the ladle temperature measurement sampling system comprises a controller, a ladle temperature measurement system and a ladle sampling system; the ladle temperature measurement system comprises a temperature measurement motor for driving a temperature measurement actuating mechanism, temperature measurement position detection equipment for detecting the position of the temperature measurement actuating mechanism and a temperature measurement frequency converter for controlling the temperature measurement motor; the ladle sampling system comprises a sampling motor for driving a sampling actuating mechanism, sampling position detection equipment for detecting the position of the sampling actuating mechanism and a sampling frequency converter for controlling the sampling motor; wherein the content of the first and second substances,

a first contactor is connected between the temperature measuring frequency converter and the temperature measuring motor, a second contactor is connected between the sampling frequency converter and the sampling motor, a third contactor is connected between the temperature measuring frequency converter and the sampling motor, and a fourth contactor is connected between the sampling frequency converter and the temperature measuring motor;

the controller is respectively and electrically connected with the temperature measurement position detection equipment, the temperature measurement frequency converter, the sampling position detection equipment, the sampling frequency converter, the first contactor (KM12), the second contactor (KM22), the third contactor (KM13) and the fourth contactor (KM 23);

the third contactor and the fourth contactor are used for interconnecting the ladle temperature measuring system and the ladle sampling system, so that the temperature measuring frequency converter and the sampling frequency converter can be switched.

Based on the above system, referring to fig. 2, the method includes:

s101, when the controller receives a trigger signal, controlling to switch on the first contactor and/or the second contactor, and simultaneously switching off the third contactor and the fourth contactor;

s102, the controller sends a temperature measurement control signal to the temperature measurement frequency converter so as to control the temperature measurement motor to drive the temperature measurement actuating mechanism to measure temperature; and/or the controller sends a sampling control signal to the sampling frequency converter so as to control the sampling motor to drive the sampling actuating mechanism to sample;

wherein the content of the first and second substances,

when the controller receives a fault signal of the temperature measuring frequency converter, judging whether the sampling frequency converter is in a standby state or not and judging whether the position of the sampling execution mechanism is higher than a first preset height or not;

if the sampling frequency converter is in a standby state and the position of the sampling execution mechanism is higher than a first preset height, controlling to switch on the fourth contactor and switch off the first contactor, so that the sampling frequency converter controls the temperature measurement execution mechanism to complete temperature measurement;

or the like, or, alternatively,

when the controller receives a fault signal of the sampling frequency converter, judging whether the temperature measurement frequency converter is in a standby state or not and judging whether the position of the temperature measurement actuating mechanism is higher than a second preset height or not;

and if the temperature measurement frequency converter is in a standby state and the position of the temperature measurement actuating mechanism is higher than a second preset height, controlling to switch on the third contactor and switch off the second contactor, so that the temperature measurement frequency converter controls the sampling actuating mechanism to finish sampling.

As an optional implementation, the method further comprises:

when the controller receives a fault signal of the temperature measuring frequency converter, judging whether the sampling frequency converter is in a standby state or not and judging whether the position of the sampling execution mechanism is higher than a first preset height or not;

if the sampling frequency converter is in the running state, after the sampling execution mechanism finishes primary sampling and the position of the sampling execution mechanism is higher than the first preset height, the fourth contactor is controlled to be connected, the first contactor is disconnected, and the sampling frequency converter controls the temperature measurement execution mechanism to finish temperature measurement.

When the temperature measurement frequency converter breaks down, the smooth sampling can be ensured, and the temperature measurement can be completed as fast as possible by means of the control of the sampling frequency converter.

As an optional implementation manner, after the sampling frequency converter controls the temperature measurement executing mechanism to complete temperature measurement, the method further includes:

and controlling to disconnect the fourth contactor and connect the first contactor to electrically connect the temperature measurement frequency converter with the temperature measurement actuating mechanism.

The normal operation of sampling can be recovered, at this time, if the temperature measuring frequency converter is repaired, the normal temperature measuring operation can be carried out, if the temperature measuring frequency converter is not repaired, the steps can be continuously executed, the sampling frequency converter is switched to control the temperature measuring operation, the automation can be realized, and the efficiency is improved.

As an optional implementation, the method further comprises:

when the controller receives a fault signal of the sampling frequency converter, judging whether the temperature measurement frequency converter is in a standby state or not and judging whether the position of the temperature measurement actuating mechanism is higher than a second preset height or not;

if the temperature measurement frequency converter is in the running state, after the temperature measurement executing mechanism finishes one-time sampling and the position of the temperature measurement executing mechanism is higher than the second preset height, the third contactor is controlled to be connected, the second contactor is disconnected, and the temperature measurement frequency converter controls the sampling executing mechanism to finish sampling.

When the sampling frequency measuring device has a fault, the smooth temperature change can be ensured, and the sampling can be completed by the aid of the temperature change frequency converter control as quickly as possible.

As an optional implementation manner, after the temperature measuring frequency converter controls the sampling execution mechanism to complete sampling, the method further includes:

and controlling to disconnect the third contactor and connect the second contactor to electrically connect the sampling frequency converter with the sampling and measuring mechanism.

The normal operation of temperature measurement can be recovered, at this time, if the sampling frequency converter is also repaired, the normal sampling operation can be carried out, if the sampling frequency converter is not repaired, the steps can be continuously executed, the sampling frequency converter is switched to the temperature measurement frequency converter, the sampling operation is controlled, automation can be realized, and the efficiency is improved.

As an alternative embodiment, the ladle sampling system further comprises a sampling position encoder;

then, the method for determining whether the position of the sampling actuator is higher than a first preset height includes:

and the controller judges whether the position of the sampling execution mechanism is higher than a first preset height or not according to the position information of the sampling execution structure provided by the sampling position encoder.

As an optional implementation, the thermometric sampling system further comprises a thermometric position encoder;

the method for judging whether the position of the temperature measurement actuating mechanism is higher than a second preset height comprises the following steps:

and the controller judges whether the position of the temperature measurement actuating mechanism is higher than a second preset height or not according to the position information of the temperature measurement actuating mechanism provided by the temperature measurement position encoder.

Specifically, the first preset height and the second preset height need to be determined according to the field, and the condition that the running of the molten steel car is not hindered needs to be met.

As an alternative embodiment, the first preset height and the second preset height are both 11.3 m.

In an alternative embodiment, the sampling actuator is a sampling gun.

As an alternative embodiment, the temperature measurement actuator is a temperature measurement gun.

The process of the invention is explained in detail below with reference to a specific example.

Referring to fig. 1 and 2, the method of the present embodiment includes the following steps: the sampling frequency converter is failed, and the temperature measuring frequency converter is normal.

The controller is a PLC, and a system diagram is shown in figure 1.

The temperature measurement frequency converter is the same as the sampling frequency converter, and related parameters P554-B3100, P443-K3002, P734.6-K250 and P734.0-K32 of the frequency converter are set;

the ladle temperature measuring system is the same as the ladle sampling system, and is provided with a conventional fuse and a reactor resistance.

When the temperature measurement operation button is pressed, the ladle temperature measurement system is normally electrified to work, the PLC judges that the temperature measurement frequency converter has a fault, and the sampling frequency converter is in a stop state and the gun position of the sampling frequency converter is more than 11.3 meters, the control KM23 of the PLC is closed, the operation of the temperature measurement motor is automatically switched to the sampling frequency converter to complete temperature measurement;

the technical scheme in the embodiment of the application at least has the following technical effects or advantages:

the method is applied to a ladle temperature measurement sampling system, and the ladle temperature measurement sampling system comprises a controller, a ladle temperature measurement system and a ladle sampling system; the ladle temperature measurement system comprises a temperature measurement motor for driving a temperature measurement actuating mechanism, temperature measurement position detection equipment for detecting the position of the temperature measurement actuating mechanism and a temperature measurement frequency converter for controlling the temperature measurement motor; the ladle sampling system comprises a sampling motor for driving a sampling actuating mechanism, sampling position detection equipment for detecting the position of the sampling actuating mechanism and a sampling frequency converter for controlling the sampling motor; the temperature measuring device comprises a temperature measuring transducer, a temperature measuring motor, a sampling transducer, a first contactor, a second contactor, a third contactor, a fourth contactor, a third contactor and a fourth contactor, wherein the first contactor is connected between the temperature measuring transducer and the temperature measuring motor; the controller is respectively and electrically connected with the temperature measuring position detection device, the temperature measuring frequency converter, the sampling position detection device, the sampling frequency converter, the first contactor, the second contactor, the third contactor and the fourth contactor; the method comprises the following steps: when the controller receives a trigger signal, controlling to switch on the first contactor and/or the second contactor, and simultaneously switching off the third contactor and the fourth contactor; the controller sends a temperature measurement control signal to the temperature measurement frequency converter so as to control the temperature measurement motor to drive the temperature measurement actuating mechanism to measure temperature; and/or the controller sends a sampling control signal to the sampling frequency converter so as to control the sampling motor to drive the sampling actuating mechanism to sample; when the controller receives a fault signal of the temperature measuring frequency converter, judging whether the sampling frequency converter is in a standby state or not and judging whether the position of the sampling execution mechanism is higher than a first preset height or not; if the sampling frequency converter is in a standby state and the position of the sampling execution mechanism is higher than a first preset height, controlling to switch on the fourth contactor and switch off the first contactor, so that the sampling frequency converter controls the temperature measurement execution mechanism to complete temperature measurement; or, when the controller receives a fault signal of the sampling frequency converter, judging whether the temperature measurement frequency converter is in a standby state or not and judging whether the position of the temperature measurement actuating mechanism is higher than a second preset height or not; and if the temperature measurement frequency converter is in a standby state and the position of the temperature measurement actuating mechanism is higher than a second preset height, controlling to switch on the third contactor and switch off the second contactor, so that the temperature measurement frequency converter controls the sampling actuating mechanism to finish sampling. Because third contactor and fourth contactor have been increased at original ladle temperature measurement system and ladle sampling system, make when the temperature measurement converter trouble, can judge and call the sample converter through the controller immediately and carry out temperature measurement control to the temperature measurement motor, or when the sample converter trouble, can judge and call the temperature measurement converter through the controller immediately and carry out sample control to the sample motor, thereby when avoiding because of sample converter or temperature measurement converter trouble, the maintenance is handled untimely, cause the rifle body of temperature measurement or sample just to stop in the molten steel of high temperature, not only cause the rifle body to burn, hinder the molten steel car operation simultaneously, and the production efficiency is reduced.

In addition, under the condition that standby equipment is not added, the temperature measuring sampling frequency converters are mutually standby, so that the equipment failure rate is reduced; the influence time on production is reduced; the cost of adding standby equipment is reduced; the temperature measurement and sampling are mutually standby for automatic switching, and the automation control degree is improved.

While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.