阅读说明：本技术 蒸汽喷射冷却装置及系统 (Steam jet cooling device and system ) 是由 周敏杰 程风扣 于 2020-05-06 设计创作，主要内容包括：本发明实施例提供一种蒸汽喷射冷却装置及系统,该装置包括：变频装置及冷却水循环单元；变频装置与冷却水循环单元通信连接；变频装置,用于接收炼钢罐的罐盖状态信号,并根据罐盖状态信号控制冷却水循环单元的启动或停止；冷却水循环单元,用于在变频装置的控制下对蒸汽喷射真空装置从炼钢罐中的钢水抽出的气体及蒸汽进行冷却或停止冷却。本发明的装置可以在需要进行冷却处理时,启动冷却水循环单元,在不需要进行冷却处理时,停止冷却水循环单元,进而可以实现启停冷却水循环单元的自动化,可有效节约能源,降低成本。(The embodiment of the invention provides a steam jet cooling device and a system, wherein the device comprises: a frequency conversion device and a cooling water circulation unit; the frequency conversion device is in communication connection with the cooling water circulation unit; the frequency conversion device is used for receiving a tank cover state signal of the steelmaking tank and controlling the start or stop of the cooling water circulation unit according to the tank cover state signal; and the cooling water circulating unit is used for cooling or stopping cooling the gas and the steam extracted from the molten steel in the steel making tank by the steam jet vacuum device under the control of the frequency conversion device. The device can start the cooling water circulation unit when cooling treatment is needed, and stop the cooling water circulation unit when cooling treatment is not needed, so that the automation of starting and stopping the cooling water circulation unit can be realized, energy can be effectively saved, and the cost is reduced.)

1. A steam injection cooling device, comprising: a frequency conversion device and a cooling water circulation unit;

the frequency conversion device is in communication connection with the cooling water circulation unit;

the frequency conversion device is used for receiving a tank cover state signal of the steelmaking tank and controlling the cooling water circulation unit to start or stop according to the tank cover state signal;

and the cooling water circulation unit is used for cooling or stopping cooling the gas and the steam extracted from the molten steel in the steelmaking pot by the steam jet vacuum device under the control of the frequency conversion device.

2. The apparatus of claim 1, wherein the canister lid status signal comprises: uncovering signals and covering signals;

the frequency conversion device is specifically used for controlling the cooling water circulation unit to start according to the sealing signal when receiving the sealing signal, and controlling the cooling water circulation unit to stop according to the uncovering signal when receiving the uncovering signal.

3. The apparatus according to claim 1 or 2, wherein the frequency conversion means comprises: hot-water pump converter switch board and cold water pump converter switch board, the cooling water circulation unit includes: hot and cold water pumps;

the hot water pump frequency converter control cabinet is in communication connection with the hot water pump, and the cold water pump frequency converter control cabinet is in communication connection with the cold water pump;

the hot water pump frequency converter control cabinet is used for controlling the hot water pump to start or stop according to the tank cover control signal;

and the cold water pump frequency converter control cabinet is used for controlling the cold water pump to start or stop according to the tank cover control signal.

4. The apparatus of claim 3, wherein the cooling water circulation unit further comprises: the system comprises a condenser, a hot water pool and a hot water pool self-suction box;

the hot water pool and the hot water pool self-suction box are arranged from bottom to top, and the hot water pump is arranged above the hot water pool; the hot water pool is connected with an input end pipeline of the hot water pool self-suction box, and an output end of the hot water pool self-suction box is connected with an input end pipeline of the hot water pump;

the hot water pool self-suction box is used for sucking hot water from the hot water pool and storing hot water with preset volume capacity;

the hot water pump is used for pumping the hot water in the hot water tank from the suction box to the condenser for condensation.

5. The apparatus of claim 4, wherein the preset volumetric capacity is greater than or equal to a preset multiple of a storage volume of the hot water pump input pipe.

6. The apparatus according to claim 4, wherein a liquid level sensor is provided in the hot water tank;

the liquid level sensor is in communication connection with the hot water pump frequency converter control cabinet;

the liquid level sensor is used for measuring the liquid level information of hot water in the hot water pool and sending the liquid level information to the hot water pump frequency converter control cabinet;

and the hot water pump frequency converter control cabinet is used for controlling the water absorption power of the hot water pump by adopting a PID algorithm according to the liquid level information.

7. The apparatus of claim 3 wherein said cold water pump inverter control cabinet is in communication with said vapor jet vacuum;

and the cold water pump frequency converter control cabinet is used for acquiring the model information of a steam jet pump in the steam jet vacuum device and controlling the water absorption power of the cold water pump according to the model information.

8. The apparatus of claim 3, wherein the cooling water circulation unit further comprises a cold water tank, an input end of the cold water pump is connected with the cold water tank pipe, and an output end of the cold water pump is connected with the steam jet vacuum apparatus pipe.

9. A steam injection cooling system, comprising: a steam jet vacuum apparatus, a steelmaking vessel and a steam jet cooling apparatus as claimed in any one of claims 1 to 8;

the steam jet cooling device is connected with a steam jet vacuum device through a pipeline and is in communication connection with the steelmaking pot;

the steam jet vacuum device is used for vacuumizing the steelmaking tank and outputting gas and steam generated by molten steel;

and the steam jet cooling device is used for receiving a tank cover state signal sent by the steelmaking tank and controlling the tank cover state signal to cool or stop cooling the gas and the steam generated by the molten steel according to the tank cover state signal.

10. The system of claim 9, wherein the steelmaking vessel comprises: the tank cover is provided with a tank cover state sensor;

the tank cover state sensor is in communication connection with the steam jet cooling device;

the tank cover state sensor is used for detecting the state of the tank cover, generating a tank cover state signal and sending the tank cover state signal to the steam jet cooling device;

the steam jet cooling device is specifically used for receiving a tank cover state signal sent by a tank cover state sensor and controlling the tank cover state sensor to cool or stop cooling gas and steam generated by the molten steel according to the tank cover state signal.

Technical Field

The embodiment of the invention relates to the technical field of steel-making cooling systems, in particular to a steam jet cooling device and a steam jet cooling system.

Background

In the steel-making process of a steel mill, a steam injection system is a commonly used vacuum-pumping system, is mainly used for degassing molten steel, enables non-metallic inclusions to float upwards and homogenize molten steel components and temperature through molten steel circulation, and has multiple metallurgical functions of deoxidation, decarburization, desulfurization, dephosphorization, component fine adjustment and the like through a material adding system. In this process, it is very important to cool the high temperature gas and steam extracted.

The conventional cooling system does not support frequent start and stop, and meanwhile, the system needs to be controlled to start and stop through a manual switch, so that the cooling system needs to continuously operate and cannot be correspondingly started and stopped when needed in a normal use process. Generally, the number of furnaces used by a steel mill every day is 20, and each furnace is used for 30 minutes, so that when cooling is not needed, a cooling system is always kept in a starting state, continuous power consumption is realized, and energy waste is great.

Disclosure of Invention

The invention provides a steam jet cooling device and a steam jet cooling system, which are used for solving the problem that the existing cooling system cannot be correspondingly started and stopped when needed, so that the energy waste is great.

In one aspect, the present invention provides a steam injection cooling device comprising:

a frequency conversion device and a cooling water circulation unit;

the frequency conversion device is in communication connection with the cooling water circulation unit;

the frequency conversion device is used for receiving a tank cover state signal of the steelmaking tank and controlling the cooling water circulation unit to start or stop according to the tank cover state signal;

and the cooling water circulation unit is used for cooling or stopping cooling the gas and the steam extracted from the molten steel in the steelmaking pot by the steam jet vacuum device under the control of the frequency conversion device.

Further, in the steam injection cooling device as described above, the tank cover state signal includes: uncovering signals and covering signals;

the frequency conversion device is specifically used for controlling the cooling water circulation unit to start according to the sealing signal when receiving the sealing signal, and controlling the cooling water circulation unit to stop according to the uncovering signal when receiving the uncovering signal.

Further, the steam injection cooling device as described above, the frequency conversion device includes: hot-water pump converter switch board and cold water pump converter switch board, the cooling water circulation unit includes: hot and cold water pumps;

the hot water pump frequency converter control cabinet is in communication connection with the hot water pump, and the cold water pump frequency converter control cabinet is in communication connection with the cold water pump;

the hot water pump frequency converter control cabinet is used for controlling the hot water pump to start or stop according to the tank cover control signal;

and the cold water pump frequency converter control cabinet is used for controlling the cold water pump to start or stop according to the tank cover control signal.

Further, the steam jet cooling device as described above, the cooling water circulation unit further includes: the system comprises a condenser, a hot water pool and a hot water pool self-suction box;

the hot water pool and the hot water pool self-suction box are arranged from bottom to top, and the hot water pump is arranged above the hot water pool; the hot water pool is connected with an input end pipeline of the hot water pool self-suction box, and an output end of the hot water pool self-suction box is connected with an input end pipeline of the hot water pump;

the hot water pool self-suction box is used for sucking hot water from the hot water pool and storing hot water with preset volume capacity;

the hot water pump is used for pumping the hot water in the hot water tank from the suction box to the condenser for condensation.

Further, in the steam jet cooling device as described above, the preset volume capacity is greater than or equal to a preset multiple of the water storage volume of the hot water pump input pipeline.

Further, in the steam jet cooling device as described above, a liquid level sensor is disposed in the hot water tank;

the liquid level sensor is in communication connection with the hot water pump frequency converter control cabinet;

the liquid level sensor is used for measuring the liquid level information of hot water in the hot water pool and sending the liquid level information to the hot water pump frequency converter control cabinet;

and the hot water pump frequency converter control cabinet is used for controlling the water absorption power of the hot water pump by adopting a PID algorithm according to the liquid level information.

Further, as for the steam jet cooling device, the cold water pump frequency converter control cabinet is in communication connection with the steam jet vacuum device;

and the cold water pump frequency converter control cabinet is used for acquiring the model information of a steam jet pump in the steam jet vacuum device and controlling the water absorption power of the cold water pump according to the model information.

Further, as above steam jet cooling device, the cooling water circulation unit further comprises a cold water tank, the input end of the cold water pump is connected with the cold water tank pipe, and the output end of the cold water pump is connected with the steam jet vacuum device pipe.

In another aspect, the present invention provides a steam injection cooling system comprising: a steam injection vacuum device, a steelmaking vessel and a steam injection cooling device as described in any one of the preceding claims;

the steam jet cooling device is connected with a steam jet vacuum device through a pipeline and is in communication connection with the steelmaking pot;

the steam jet vacuum device is used for vacuumizing the steelmaking tank and outputting gas and steam generated by molten steel;

and the steam jet cooling device is used for receiving a tank cover state signal sent by the steelmaking tank and controlling the tank cover state signal to cool or stop cooling the gas and the steam generated by the molten steel according to the tank cover state signal.

Further, the steam injection cooling system as described above, the steelmaking vessel comprising: the tank cover is provided with a tank cover state sensor;

the tank cover state sensor is in communication connection with the steam jet cooling device;

the tank cover state sensor is used for detecting the state of the tank cover, generating a tank cover state signal and sending the tank cover state signal to the steam jet cooling device;

the steam jet cooling device is specifically used for receiving a tank cover state signal sent by a tank cover state sensor and controlling the tank cover state sensor to cool or stop cooling gas and steam generated by the molten steel according to the tank cover state signal.

The embodiment of the invention provides a steam jet cooling device and a system, wherein the steam jet cooling device comprises: a frequency conversion device and a cooling water circulation unit; the frequency conversion device is in communication connection with the cooling water circulation unit; the frequency conversion device is used for receiving a tank cover state signal of the steelmaking tank and controlling the cooling water circulation unit to start or stop according to the tank cover state signal; and the cooling water circulation unit is used for cooling or stopping cooling the gas and the steam extracted from the molten steel in the steelmaking pot by the steam jet vacuum device under the control of the frequency conversion device. The frequency conversion device and the cooling water circulation unit are arranged and are in communication connection with each other, and the cooling water circulation unit is mainly used for cooling gas and steam extracted from molten steel in a steel making tank by the steam jet vacuum device. When the frequency conversion device receives a tank cover state signal of the steelmaking tank, the start or stop of the cooling water circulation unit can be controlled according to the tank cover state signal; therefore, when cooling treatment is needed, the cooling water circulation unit is started, and when cooling treatment is not needed, the cooling water circulation unit is stopped, so that the automation of starting and stopping the cooling water circulation unit can be realized, the energy can be effectively saved, and the cost can be reduced.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

Fig. 1 is a schematic structural diagram of a steam jet cooling device according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a steam injection cooling device according to another embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a steam injection cooling system according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a steam injection cooling system according to another embodiment of the present invention.

Description of the symbols:

10. a frequency conversion device; 12. a cold water pump frequency converter control cabinet; 14. a hot water pump frequency converter control cabinet; 20. a cooling water circulation unit; 21. a cold water pump; 22. a cold water tank; 23. a hot water pump; 24. a hot water pool self-suction box; 25. a liquid level sensor; 26. a condenser; 27. a hot water tank; 30. a steam jet vacuum device; 40. a steelmaking tank; 42. a tank cover state sensor; 50. and a steam jet cooling device.

In the drawings of the embodiments of the present invention, fig. 1 and fig. 2 are shown for clearly showing the external connection relationship of the steam jet cooling device according to the embodiments of the present invention, and the connection relationship between the steam jet cooling device according to the embodiments and the steam jet vacuum device 30 is added in the drawings, but the steam jet cooling device according to the embodiments of the present invention does not include the steam jet vacuum device 30, and thus, the description is made.

With the foregoing drawings in mind, certain embodiments of the disclosure have been shown and described in more detail below. These drawings and written description are not intended to limit the scope of the disclosed concepts in any way, but rather to illustrate the concepts of the disclosure to those skilled in the art by reference to specific embodiments.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

The technical solution of the present invention will be described in detail below with specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments. Embodiments of the present invention will be described below with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of a steam jet cooling device according to an embodiment of the present invention, as shown in fig. 1, in this embodiment, the steam jet cooling device may include: a frequency conversion device 10 and a cooling water circulation unit 20;

wherein, the frequency conversion device 10 is connected with the cooling water circulation unit 20 in communication.

In this embodiment, the frequency conversion apparatus 10 is configured to receive a tank cover state signal of the steelmaking tank, and control the start or stop of the cooling water circulation unit 20 according to the tank cover state signal. And a cooling water circulation unit 20 for cooling or stopping cooling of the gas and steam extracted from the molten steel in the steel making tank by the steam jet vacuum apparatus 30 under the control of the inverter apparatus 10.

In this embodiment, the steelmaking vessel is a vessel body for steelmaking, and molten steel is provided in the steelmaking vessel and gas and steam are generated during steelmaking.

The steam jet vacuum device is a device for vacuumizing the steel making tank and mainly comprises a steam jet vacuum pump. And the hydrogen and nitrogen of the molten steel in the steelmaking tank are pumped out by utilizing a steam jet vacuum pump, so that the steelmaking purity is ensured.

In this embodiment, the frequency conversion apparatus 10 may include a frequency converter and a Programmable Logic Controller (PLC). At least one water pump may be included in the cooling water circulation unit 20. The PLC receives the state signal of the tank cover of the steel making tank, and the frequency converter adjusts the power of the water pump of the cooling water circulation unit 20. The can cover state signal can comprise a cover closing signal and a cover uncovering signal; the cover sealing signal is a signal sent by the tank cover during cover sealing, indicates that the tank cover is sealed, can be vacuumized, and cools gas and steam generated in the vacuumizing process; at this time, the cooling water circulation unit 20 is turned on. The cover opening signal is a signal sent when the cover of the tank cover is opened, and indicates that the cover of the tank cover is opened and the molten steel vacuumizing process is finished. At this time, the cooling water circulation unit 20 is stopped.

The steam injection cooling device of the present embodiment includes: a frequency conversion device 10 and a cooling water circulation unit 20; the frequency conversion device 10 is in communication connection with the cooling water circulation unit 20; the frequency conversion device 10 is used for receiving a tank cover state signal of the steelmaking tank and controlling the start or stop of the cooling water circulation unit 20 according to the tank cover state signal; and a cooling water circulation unit 20 for cooling or stopping cooling of the gas and steam extracted from the molten steel in the steel making tank by the steam jet vacuum apparatus 30 under the control of the inverter apparatus 10. By providing the inverter device 10 and the cooling water circulation unit 20 which are communicatively connected to each other, the cooling water circulation unit 20 is mainly used to cool the gas and steam extracted from the molten steel in the steel making tank by the steam jet vacuum device 30. When the frequency conversion device 10 receives a tank cover state signal of the steelmaking tank, the start or stop of the cooling water circulation unit 20 can be controlled according to the tank cover state signal; therefore, when cooling treatment is needed, the cooling water circulation unit 20 is started, and when cooling treatment is not needed, the cooling water circulation unit 20 is stopped, so that automation of starting and stopping the cooling water circulation unit can be realized, energy can be effectively saved, and cost is reduced.

Fig. 2 is a schematic structural diagram of a steam jet cooling device according to another embodiment of the present invention, and as shown in fig. 2, the steam jet cooling device according to this embodiment further refines the frequency conversion device and the cooling water circulation unit on the basis of the steam jet cooling device according to the previous embodiment, and then the steam jet cooling device according to this embodiment further includes the following technical solutions.

Optionally, in this embodiment, the tank cover state signal includes: a cover uncovering signal and a cover closing signal.

Accordingly, the frequency conversion apparatus 10 is specifically configured to control the cooling water circulation unit 20 to start according to the capping signal when receiving the capping signal, and control the cooling water circulation unit 20 to stop according to the uncovering signal when receiving the uncovering signal.

Specifically, the capping signal is a state signal of the can lid at the time of capping, indicating that the can lid has been capped. If the frequency conversion device 10 receives the capping signal, it indicates that the steam jet vacuum device 30 can vacuumize the steel making tank, and at this time, the steam jet cooling device is required to cool the gas and steam generated in the vacuuming process. When the frequency conversion device 10 receives the capping signal, the cooling water circulation unit 20 is controlled to be activated to cool the gas and the steam generated during the vacuum-pumping process.

The cover opening signal is a state signal of the can cover during the cover opening process and indicates that the can cover is completely opened. If the frequency conversion device 10 receives the cover uncovering signal, the steam jet vacuum device 30 finishes the vacuumizing process of the steelmaking tank. At this time, the steam jet cooling device is not required to continuously cool the gas and steam generated during the vacuum-pumping process, so the cooling water circulation unit 20 is controlled to stop when the cover-uncovering signal is received by the frequency conversion device 10.

Optionally, in this embodiment, the frequency conversion apparatus 10 may include: hot-water pump converter switch board 14 and cold water pump converter switch board 12, cooling water circulation unit 20 includes: a hot water pump 23 and a cold water pump 21.

Wherein, hot water pump inverter control cabinet 14 and hot water pump 23 communication connection, cold water pump inverter control cabinet 12 and cold water pump 21 communication connection.

In this embodiment, the hot water pump inverter control cabinet 14 is configured to control the hot water pump 23 to start or stop according to the tank cover control signal. And the cold water pump frequency converter control cabinet 12 is used for controlling the cold water pump 21 to start or stop according to the tank cover control signal.

The size, shape and other parameters of the control cabinet of the frequency converter of the hot water pump are not limited, and the size, shape and other parameters of the control cabinet of the frequency converter of the cold water pump are not limited.

In this embodiment, the way that the control cabinet of the hot water pump inverter 14 controls the hot water pump 21 to start or stop according to the tank cover control signal may be line control or communication control. Similarly, the way of controlling the cold water pump 21 to start or stop according to the tank cover control signal by the cold water pump inverter control cabinet 12 may be line control or communication control, which is not limited in this embodiment.

It is understood that the water absorption power of the hot water pump 21 controlled by the hot water pump inverter and the water absorption power of the cold water pump 21 controlled by the cold water pump inverter may be identical, so that the vapor jet cooling device composed of the hot water pump, the cold water pump, and other components is a circulating device for cooling the extracted gas and vapor.

In this embodiment, the frequency conversion apparatus 10 includes: hot-water pump converter switch board 14 and cold water pump converter switch board 12, cooling water circulation unit 20 includes: a hot water pump 23 and a cold water pump 21. The hot water pump frequency converter control cabinet 14 can control the hot water pump 23 to start or stop according to the tank cover control signal, and the cold water pump frequency converter control cabinet 12 can control the cold water pump 21 to start or stop according to the tank cover control signal. Therefore, two sets of steam jet cooling systems are formed, and the two sets of steam jet cooling systems operate independently and do not interfere with each other. Optionally, in this embodiment, the cooling water circulation unit 20 may further include: a condenser 26, a hot water tank 27 and a hot water tank self-suction box 24.

The hot water tank 27 and the hot water tank self-suction box 24 are arranged from bottom to top, and the hot water pump 23 is arranged above the hot water tank 27. The hot water pool 27 is connected with the input end pipeline of the hot water pool self-suction box 24, and the output end of the hot water pool self-suction box 24 is connected with the input end pipeline of the hot water pump 23.

Wherein the hot water tank self-suction box 24 is used for sucking hot water from the hot water tank 27 and storing hot water with preset volume capacity. And a hot water pump 23 for pumping hot water from the hot water tank 24 to a condenser 26 for condensation.

In this embodiment, the position relationship among the hot water tank 27, the hot water tank self-suction box 24, and the hot water pump 23 may also be that the hot water pump 23 and the hot water tank self-suction box 24 are located above the hot water tank 27, and meanwhile, the hot water pump 23 and the hot water tank self-suction box 24 may be located on the same horizontal plane, so as to ensure that the height of the horizontal plane stored in the hot water tank self-suction box 24 is greater than the height of the input pipeline of the hot water pump 23. For the position relationship between the hot water tank self-suction box 24 and the hot water pump 23 in this embodiment, it is only necessary to ensure that the hot water pump 23 can pump water from the hot water tank self-suction box 24, and the hot water tank self-suction box 24 can also suck water from the hot water tank 27 and keep a preset volume of hot water. The present embodiment is not particularly limited with respect to other positional relationships.

In this embodiment, because the water suction valve in the existing cooling water system, in frequent start and stop, the problem that the water pump cannot suck water is generated, so the hot water tank self-suction box 24 is added in this embodiment. The hot water pool self-suction box 24 is the key for successful water suction of the hot water pump after multiple frequency conversion starting.

Meanwhile, in this embodiment, the preset volume capacity is greater than or equal to a preset multiple of the water storage volume of the input pipeline of the hot water pump 23.

In this embodiment, after many experiments, the preset volume capacity stored in the self-suction box 24 of the hot water tank is preferably greater than or equal to 3 times of the water storage volume of the input pipeline of the hot water pump 23.

Optionally, in the present embodiment, a liquid level sensor 25 is disposed in the hot water tank 27.

Wherein, the liquid level sensor 25 is in communication connection with the hot water pump frequency converter control cabinet 14.

And the liquid level sensor 25 is used for measuring the liquid level information of the hot water in the hot water tank 27 and sending the liquid level information to the hot water pump frequency converter control cabinet 14. And the hot water pump frequency converter control cabinet 14 is used for controlling the water absorption power of the hot water pump 23 by adopting a PID algorithm (English: a probability Integral Differential) according to the liquid level information.

In this embodiment, the liquid level sensor 25 is arranged to transmit the liquid level information of the hot water in the hot water tank 27 to the hot water pump frequency converter control cabinet 14 in real time, and after the hot water pump frequency converter control cabinet 14 obtains the liquid level information, the water absorption power of the hot water pump is controlled in real time by using the PID algorithm.

In this embodiment, the liquid level sensor 25 measures the liquid level information of the hot water in the hot water tank 27, and sends the liquid level information to the hot water pump frequency converter control cabinet 14, and the hot water pump frequency converter control cabinet 14 controls the water absorption power of the hot water pump 23 by using a PID algorithm according to the liquid level information. The hot water pump frequency converter control cabinet 14 can judge the hot water content and the liquid level change degree in the hot water tank 27 at the moment according to the liquid level information, so that the power of the hot water pump 23 is controlled to achieve the purpose of adjusting the hot water liquid level of the hot water tank 27, and the energy is saved while the pumping of the hot water pump 23 is ensured to be continuous.

Optionally, in this embodiment, the cold water pump inverter control cabinet 12 is communicatively coupled to the steam jet vacuum 30.

The cold water pump frequency converter control cabinet 12 is configured to obtain model information of a steam jet pump in the steam jet vacuum device 30, and control water absorption power of the cold water pump 21 according to the model information.

Specifically, in this embodiment, the steam jet pump may be of various types, for example, 5 types, which respectively correspond to different vacuum states, and can reach a high vacuum of 0.5 torr. When each type of the steam jet pump is vacuumized, the required cooling degree is different, and the water suction power of the cold water pump 21 is adjusted through the cold water pump frequency converter control cabinet 12 according to the type information of the steam jet pump, so that the required cooling efficiency can be provided, and meanwhile, the energy can be saved.

Optionally, in this embodiment, the cooling water circulation unit 20 may further include a cold water tank 22, an input end of the cold water pump 21 is connected to the cold water tank 22 through a pipe, and an output end of the cold water pump 21 is connected to the steam jet vacuum device 30 through a pipe.

In this embodiment, the cold water pump 21 continuously cools the gas and the steam extracted by the steam jet vacuum device 30 by extracting the cooling water from the cold water tank 22, wherein the extracted gas mainly includes hydrogen and nitrogen.

In the steam jet cooling device of the present embodiment, the inverter device 10 and the cooling water circulation unit 20 are provided to be connected to each other in communication, and the cooling water circulation unit 20 is mainly used for cooling gas and steam extracted from molten steel in a steel making tank by the steam jet vacuum device 30. When the frequency conversion device 10 receives the tank cover state signal of the steelmaking tank, the cooling water circulation unit 20 can be controlled to correspondingly start or stop according to a cover closing signal or a cover uncovering signal in the tank cover state signal; therefore, when cooling treatment is needed, the cooling water circulation unit 20 is started, and when cooling treatment is not needed, the cooling water circulation unit 20 is stopped, so that automation of starting and stopping the cooling water circulation unit can be realized, and the effects of saving energy and reducing cost are achieved.

Meanwhile, when the cold water pump inverter control cabinet 12 receives the capping signal, the cold water pump 21 is correspondingly started, and the cold water pump 21 pumps cooling water from the cold water tank 22 to cool gas and steam pumped from molten steel in the steel making tank by the steam jet vacuum device 30. The cooling water is changed into hot water after cooling, and enters the hot water tank 27.

When the hot water pump frequency converter control cabinet 14 receives the capping signal, the hot water pump 23 is also started; at this time, the hot water flowing into the hot water tank 27 is pumped out to the condenser 26 by the hot water pump 23 to be condensed, and the condensed cooling water is obtained and input to the cold water tank 22. This is a cooling water circulation. In this process, the cold water pump frequency converter control cabinet 12 can control the cold water pump 21 to adjust the corresponding power according to different steam jet pumps by acquiring the models of the steam jet pumps, so that the cooling effect is ensured. The hot water pump frequency converter control cabinet 14 controls the hot water pump 23 to adjust the corresponding power according to the hot water liquid level information by acquiring the hot water liquid level information in the hot water tank 27 transmitted by the liquid level sensor 25 arranged in the hot water tank 27 in real time, so that the continuity of cooling water circulation is ensured.

Fig. 3 is a schematic structural diagram of a steam injection cooling system according to an embodiment of the present invention, as shown in fig. 3, in this embodiment, the steam injection cooling system includes: a steam jet vacuum device 30, a steel making pot 40 and a steam jet cooling device 50; the steam spray cooling device 50 includes a frequency conversion device 10 and a cooling water circulation unit 20.

Wherein, the steam jet cooling device 50 is connected with the steam jet vacuum device 30 by a pipeline, and the steam jet cooling device 50 is connected with the steelmaking tank 40 in a communication way.

In this embodiment, the steam jet vacuum apparatus 30 is used to evacuate the steel making vessel 40 and output the gas and steam generated from the molten steel. And the steam jet cooling device 50 is used for receiving a tank cover state signal sent by the steelmaking tank 40 and controlling the tank cover state signal to cool gas and steam generated by molten steel or stop cooling according to the tank cover state signal.

In the steam jet cooling system provided in this embodiment, the structure and function of the steam jet vacuum device 30 are similar to those of the steam jet cooling device provided in the first embodiment or the second embodiment of the present invention, and are not repeated herein.

Fig. 4 is a schematic structural diagram of a steam injection cooling system according to another embodiment of the present invention, as shown in fig. 4.

Alternatively, in this embodiment, the steelmaking tank 40 may include: the cover is provided with a cover state sensor 42.

Wherein the canister lid condition sensor 42 is communicatively coupled to the vapor jet cooling device 50.

In the present embodiment, the tank cover state sensor 42 detects the state of the tank cover, generates a tank cover state signal, and transmits the tank cover state signal to the vapor jet cooling device 50. The steam jet cooling device 50 is specifically configured to receive a tank cover state signal from a tank cover state sensor, and control the tank cover state sensor to cool or stop cooling the gas and steam generated by the molten steel according to the tank cover state signal.

In this embodiment, the position of the tank cover state sensor on the tank cover is not limited, and the sensor may be provided on the upper surface or the lower surface of the tank cover. The connection mode of the cover and the tank can be detachably connected or fixedly connected. Such as screwing, clamping, welding, etc., which is not limited in this embodiment.

The steam jet cooling system of the embodiment sends the tank cover state signal to the steam jet cooling device 50 through the tank cover of the steelmaking tank 40, and the steam jet cooling device 50 starts or stops cooling treatment on gas and steam generated by molten steel according to the tank cover state signal, so that automation of cooling water circulation starting and stopping can be realized, energy can be effectively saved, and cost is reduced.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.