Energy-saving double-chamber self-balancing container

Abstract

The utility model relates to the technical field of balancing containers, and particularly discloses an energy-saving double-chamber self-balancing container which comprises a steam pocket, a water replenishing device, a positive pressure side container, a negative pressure side container, a pressure difference transmitter and a water replenishing pipeline. The positive pressure side container is communicated with the steam pocket through a second pipeline, the negative pressure side container is communicated with the steam pocket through a third pipeline, the pressure difference transmitter is connected with the positive pressure side container and the negative pressure side container, one end of the water supplementing pipeline is communicated with the first pipeline, the other end of the water supplementing pipeline is communicated with the positive pressure side container, and a water supplementing valve is arranged on the water supplementing pipeline. One end of the water supplementing pipeline is directly communicated with the first pipeline, water supplementing of the positive pressure side container can be achieved by directly utilizing the water supplementing device used for supplementing water for the steam pocket, a water supplementing driving piece does not need to be additionally arranged, cost can be greatly saved, the occupied size can be reduced, and the water supplementing efficiency of the positive pressure side container can be greatly improved.

Description

Technical Field

[0001] This utility model relates to the technical field of balancing containers, and specifically to an energy-saving dual-chamber self-balancing container. Background Technology

[0002] In the converter steelmaking process, the steam drum, as the core equipment of the vaporization system, achieves liquid level monitoring and oxygen lance interlocking control through a dual-chamber self-balancing container. The traditional dual-chamber self-balancing container consists of a positive pressure side container, a negative pressure side container, a three-valve group (including a positive pressure valve, a negative pressure valve, and a balancing valve), a drain valve, and connecting pipelines. Its principle is as follows: the positive pressure side container maintains the liquid level through steam condensation, and the liquid level of the negative pressure side container is synchronized with the liquid level of the steam drum; the liquid level difference between the two acts on the differential pressure transmitter, and the output signal controls the oxygen lance lowering conditions. This device can ensure production continuity under normal operating conditions.

[0003] However, existing technologies have significant drawbacks:

[0004] 1. Low efficiency of liquid level recovery: When the steam drum is depressurized and drained for maintenance, the condensate in the positive pressure side container is lost with the steam drum drainage, and the liquid level returns to zero. When production is resumed, the positive pressure side liquid level needs to be regenerated by steam condensation, which takes up to 3 hours.

[0005] Second, if excessive water is added to fill the steam drum and then overflow into the positive pressure side container, it will result in a large waste of water resources.

[0006] Third, adding a new water supply system would significantly increase the overall cost. Summary of the Invention

[0007] This utility model addresses the aforementioned problems and aims to provide an energy-saving dual-chamber self-balancing container. It only requires adding one water supply pipe to replenish water to the positive pressure side container, achieving high liquid level recovery efficiency and low cost.

[0008] To achieve the above objectives, this utility model provides an energy-saving dual-chamber self-balancing container, comprising:

[0009] Steam drum;

[0010] A water replenishment device is connected to the steam drum via a first pipe and is used to replenish water to the steam drum;

[0011] A positive pressure side container, which is connected to the steam drum via a second pipe;

[0012] The negative pressure side container is connected to the steam drum via a third pipe;

[0013] A differential pressure transmitter is connected to both the positive pressure side container and the negative pressure side container;

[0014] A water supply pipe is connected at one end to the first pipe and at the other end to the positive pressure side container, and a water supply valve is provided on the water supply pipe.

[0015] According to the energy-saving dual-chamber self-balancing container described above, the diameter of the water supply pipe is smaller than the diameter of the first pipe.

[0016] According to the above-described energy-saving dual-chamber self-balancing container, the diameter of the water supply pipe is 15mm.

[0017] According to the above-described energy-saving dual-chamber self-balancing container, the water replenishment device is configured as a water pump, one end of the first pipe is connected to the outlet of the water pump, and the other end of the first pipe is connected to the bottom of the steam drum.

[0018] According to the above-described energy-saving dual-chamber self-balancing container, the steam drum is provided with a soft water layer and a steam layer. The positive pressure side container is connected to the steam layer through the second pipe, and the negative pressure side container is connected to the soft water layer through the third pipe.

[0019] According to the above-described energy-saving dual-chamber self-balancing container, the steam layer is located directly above the soft water layer, the second pipe is located between the steam layer and the top of the positive pressure side container, and the second pipe is equipped with a gas phase valve, which is used to control the opening or closing of the second pipe.

[0020] According to the energy-saving dual-chamber self-balancing container described above, the third pipe is located between the soft water layer and the bottom of the negative pressure side container, and the third pipe is equipped with a liquid phase valve, which also controls the opening or closing of the third pipe.

[0021] According to the energy-saving dual-chamber self-balancing container described above, both the bottom of the positive pressure side container and the negative pressure side container are equipped with drain valves.

[0022] According to the above-described energy-saving dual-chamber self-balancing container, the water supply valve is configured as a manual valve or an automatic valve.

[0023] According to the above-described energy-saving dual-chamber self-balancing container, 0 also includes a support platform, the steam drum is fixed on the support platform, the water replenishment device is disposed in the support platform and is connected to the bottom of the steam drum through multiple first pipes.

[0024] This utility model has the following beneficial effects:

[0025] 1. Water can be replenished to the positive pressure side container using a water supply pipe, which can greatly improve the water replenishment efficiency of the positive pressure side container, reduce production waiting time, and improve production efficiency;

[0026] 2. One end of the water supply pipe is directly connected to the first pipe. Water supply to the positive pressure side container can be achieved directly using the water supply device used for water supply to the steam drum. There is no need to install additional water supply drive components, which can significantly save costs and reduce the volume occupied.

[0027] 3. The water supply pipe is only 15mm in diameter, which is much smaller than the diameter of the first pipe, so it will not affect the water supply function of the first pipe for the steam drum. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of the embodiment.

[0029] In the picture:

[0030] 100. Steam drum; 110. Soft water layer; 120. Steam layer; 200. Water supply device; 210. First pipeline; 300. Positive pressure side container; 310. Second pipeline; 311. Gas phase valve; 400. Negative pressure side container; 410. Third pipeline; 411. Liquid phase valve; 420. Drain valve; 500. Differential pressure transmitter; 600. Water supply pipeline; 610. Water supply valve; 700. Support platform. Detailed Implementation

[0031] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0032] like Figure 1 As shown, an energy-saving dual-chamber self-balancing container includes a steam drum 100, a water supply device 200, a positive pressure side container 300, a negative pressure side container 400, a differential pressure transmitter 500, and a water supply pipeline 600.

[0033] Among them, the steam drum 100 is a cylindrical pressure vessel in a water-tube boiler used for steam-water separation and steam purification, forming a water circulation loop and storing boiler water. Its main functions are to receive water from the economizer, perform steam-water separation and supply water to the circulation loop, and deliver saturated steam to the superheater. The steam drum 100 contains a certain amount of water and has a certain amount of heat and working fluid storage. When the operating conditions change, it can slow down the rate of change of steam pressure and play a certain buffering role when the feedwater and load are not coordinated for a short period of time.

[0034] In this embodiment, the positive pressure side container 300 is connected to the steam drum 100 via the second pipe 310, and the negative pressure side container 400 is connected to the steam drum 100 via the third pipe 410. The positive pressure side container 300 and the negative pressure side container 400 together constitute a water level measuring device for the steam drum 100. The negative pressure side container 400 is directly connected to the bottom of the steam drum 100, and its liquid level is consistent with the liquid level inside the steam drum 100. The top of the steam drum 100 is connected, and both the positive pressure side container 300 and the negative pressure side container 400 are connected to the differential pressure transmitter 500. The differential pressure transmitter 500 can obtain the pressure difference between the positive pressure side container 300 and the negative pressure side container 400, and thus accurately determine the water level in the steam drum 100 through this pressure difference. The water level in the steam drum 100 is the key to whether the boiler system can maintain normal operation, so the positive pressure side container 300 and the negative pressure side container 400 are also indispensable.

[0035] In this embodiment, during flue maintenance, the liquid in the steam drum 100 needs to be drained, and the liquid in the positive pressure side container 300 and the negative pressure side container 400 is also drained. After maintenance is completed, the steam drum 100, the positive pressure side container 300, and the negative pressure side container 400 all need to be replenished with liquid. Therefore, the water replenishment device 200 is connected to the steam drum 100 through the first pipe 210 and is used to replenish water to the steam drum 100. After the steam drum 100 is replenished with water, the liquid in the steam drum 100 can enter the negative pressure side container 400 through the third pipe 410. However, in the prior art, the liquid in the positive pressure side container 300 needs to be evaporated from the liquid in the steam drum 100 and turned into water vapor. A portion of the water vapor enters the positive pressure side container 300 through the second pipe 310, but... This process takes a long time, often more than three hours, during which production cannot proceed, resulting in long production wait times and wasted time. Therefore, in this embodiment, a water replenishment pipe 600 is provided. One end of the water replenishment pipe 600 is connected to the first pipe 210, and the other end is connected to the positive pressure side container 300. A water replenishment valve 610 is provided on the water replenishment pipe 600. When the steam drum 100 is replenished with water through the water replenishment device 200, only the water replenishment valve 610 needs to be opened to achieve synchronous water replenishment to the positive pressure side container 300. This can greatly improve the water replenishment efficiency of the positive pressure side container 300, and at the same time, there is no need to arrange an additional water replenishment device 200, which can avoid a significant increase in costs and reduce the overall volume occupied.

[0036] In this embodiment, the water supply valve 610 can be set as an automatic valve or a manual valve. That is, it can be opened and closed by the control system issuing control commands, or the operator can manually open and close the water supply valve 610 according to actual needs. Both can satisfy the operator's control of the water supply valve 610. The water supply valve 610 can be used to control whether water is supplied and the water supply time. The water supply time combined with the diameter of the water supply pipe 600 can be used to calculate the water supply volume, so as to achieve precise control of the water supply volume.

[0037] In this embodiment, the diameter of the water supply pipe 600 is smaller than the diameter of the first pipe 210. Since the volume of the positive pressure side container 300 is much smaller than the volume of the steam drum 100, that is, the amount of water required for the positive pressure side container 300 is much smaller than the amount of water required for the steam drum 100, the diameter of the water supply pipe 600 needs to be set much smaller than the diameter of the first pipe 210. The water supply pipe 600 only needs to divert a small portion of liquid from the first pipe 210 to replenish the positive pressure side container 300, while not having a negative effect on the water replenishment of the steam drum 100, and having little impact on the water replenishment efficiency of the steam drum 100.

[0038] Specifically, in this embodiment, the diameter of the water supply pipe 600 is set to 15mm, and the diameter of the first pipe 210 can be set to 100mm or more. The specific dimensions can be adjusted according to actual needs.

[0039] In this embodiment, after detecting the pressure difference between the positive pressure side container 300 and the negative pressure side container 400, the differential pressure transmitter 500 converts the differential pressure signal into an electrical signal output to provide feedback on the liquid level in the steam drum 100. Only when the liquid level in the steam drum 100 is above 450mm can the oxygen lance perform purging. When the liquid level in the steam drum 100 is below 450mm, the oxygen lance does not meet the purging conditions.

[0040] In this embodiment, the water replenishment device 200 is a water pump. One end of the first pipe 210 is connected to the outlet of the water pump, and the other end of the first pipe 210 is connected to the bottom of the steam drum 100. That is, the water pump is used to extract liquid and then transport the liquid into the steam drum 100.

[0041] Specifically, the steam drum 100 is equipped with a soft water layer 110 and a steam layer 120. That is, the lower part of the steam drum 100 containing liquid is the soft water layer 110, and the part above the liquid surface is the steam layer 120. The positive pressure side container 300 is connected to the steam layer 120 through the second pipe 310, and the negative pressure side container 400 is connected to the soft water layer 110 through the third pipe 410. That is, the liquid in the soft water layer 110 can directly enter the negative pressure side container 400 through the third pipe 410. After the soft water layer 110 is heated, part of the liquid in it can evaporate into water vapor, and part of the water vapor can enter the positive pressure side container 300 through the second pipe 310, thereby realizing the pressure difference between the positive pressure side container 300 and the negative pressure side container 400.

[0042] The steam layer 120 is located directly above the soft water layer 110. The second pipe 310 is located between the steam layer 120 and the top of the positive pressure container 300. In this embodiment, one end of the second pipe 310 is connected to the upper part of the steam layer 120 to prevent liquid from directly entering the second pipe 310 due to the rise in liquid level. A gas phase valve 311 is provided on the second pipe 310. The gas phase valve 311 is used to control the opening or closing of the second pipe 310 and to control whether steam can enter the positive pressure container 300.

[0043] The third pipe 410 is located between the soft water layer 110 and the bottom of the negative pressure side container 400. The third pipe 410 is equipped with a liquid phase valve 411, which also controls the opening or closing of the third pipe 410. The liquid phase valve 411 can control whether the liquid in the soft water layer 110 can enter the negative pressure side container 400.

[0044] In order to clean the impurities in the positive pressure side container 300 and the negative pressure side container 400, a drain valve 420 is provided at the bottom of both the positive pressure side container 300 and the negative pressure side container 400. Once the drain valve 420 is opened, the liquid in the positive pressure side container 300 and the negative pressure side container 400 will carry the impurities downwards, thereby removing the impurities from the positive pressure side container 300 and the negative pressure side container 400.

[0045] To ensure the stability of the steam drum 100's positioning, a support platform 700 is also included. The steam drum 100 is fixed on the support platform 700, and the water replenishment device 200 is set inside the support platform 700 and connected to the bottom of the steam drum 100 through multiple first pipes 210. Of course, a positioning component is also provided on the support platform 700. The positioning component can be used to position the steam drum 100, preventing the steam drum 100 from directly contacting the ground, increasing its height, and preventing it from being easily damaged if placed directly on the ground. Integrating the water replenishment device 200 into the support platform 700 can improve the overall appearance performance and reduce the overall footprint.

[0046] During non-production periods, such as when the converter is shut down, the gas phase valve 311 and the water supply valve 610 can be closed to utilize the residual heat of the steam drum 100 to maintain the liquid level of the positive pressure side container 300, thereby reducing steam consumption.

[0047] Of course, in order to ensure the installation of the steam drum 100, a safety valve needs to be installed at the bottom of the steam drum 100. When the pressure value inside the steam drum 100 is greater than the preset pressure value, it can drive the safety valve to open and release pressure. Of course, the liquid discharged by the pressure release can be placed in a specific container to avoid dangerous accidents and to avoid polluting the working environment.

[0048] The technical solution of this utility model has been described in detail above with reference to the accompanying drawings. The described embodiments are used to help understand the concept of this utility model. The specific embodiments described herein are merely illustrative examples of the spirit of this utility model. Those skilled in the art to which this utility model pertains can make various modifications or additions to the described specific embodiments or use similar methods to replace them, but without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0049] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0050] Furthermore, in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0051] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0052] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

Claims

1. An energy saving dual chamber self-balancing container characterized by, include: Steam drum; A water replenishment device is connected to the steam drum via a first pipe and is used to replenish water to the steam drum; A positive pressure side container, which is connected to the steam drum via a second pipe; The negative pressure side container is connected to the steam drum via a third pipe; A differential pressure transmitter is connected to both the positive pressure side container and the negative pressure side container; A water supply pipe is connected at one end to the first pipe and at the other end to the positive pressure side container, and a water supply valve is provided on the water supply pipe.

2. An energy saving dual chamber self-balancing container as claimed in claim 1, wherein, The diameter of the water supply pipe is smaller than the diameter of the first pipe.

3. An energy saving dual chamber self-balancing container according to claim 1 or 2, wherein, The diameter of the water supply pipe is 15mm.

4. The energy-saving dual-chamber self-balancing container according to claim 1, characterized in that, The water replenishment device is a water pump, one end of the first pipe is connected to the outlet of the water pump, and the other end of the first pipe is connected to the bottom of the steam drum.

5. The energy efficient dual-chamber self-balancing container of claim 1, wherein, The steam drum is equipped with a soft water layer and a steam layer. The positive pressure side container is connected to the steam layer through the second pipe, and the negative pressure side container is connected to the soft water layer through the third pipe.

6. An energy saving dual chamber self-balancing container as claimed in claim 5 wherein, The steam layer is located directly above the soft water layer, and the second pipe is located between the steam layer and the top of the positive pressure side container. The second pipe is equipped with a gas phase valve, which is used to control the opening or closing of the second pipe.

7. An energy saving dual chamber self-balancing container as claimed in claim 6 wherein, The third pipe is located between the soft water layer and the bottom of the negative pressure side container, and a liquid phase valve is provided on the third pipe, which also controls the opening or closing of the third pipe.

8. The energy efficient dual-chamber self-balancing container of claim 1, wherein, Both the positive pressure side container and the negative pressure side container are equipped with drain valves at their bottoms.

9. The energy efficient dual-chamber self-balancing container of claim 1, wherein, The water supply valve is configured as either a manual valve or an automatic valve.

10. The energy efficient dual-chamber self-balancing container of claim 1, wherein, It also includes a support platform, on which the steam drum is fixed, and the water supply device is disposed within the support platform and connected to the bottom of the steam drum through multiple first pipes.

Images