A thermal system for temperature interlocking control of dry quenching coke boiler blowdown water
Patent Information
- Application Number
- CN202521825054.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-26
- Publication Date
- 2026-08-28
- Estimated Expiration
- 2035-08-26
AI Technical Summary
当这些高温污水直接排入集水井时，由于压力骤降会产生剧烈的闪蒸现象，导致集水井内蒸汽大量积聚，造成严重的返汽问题
[0019]本实用新型利用温度监测装置，能够用于监测集水井内的水温。冷水管路能够向集水井中补充温度较低的冷水，从而避免排放至集水井中的高温排污水导致集水井内的温度过高，影响其他设备的使用寿命。并且全程由控制装置进行远程监控，无需人工参与，从而降低了工作人员的劳动强度。
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Figure CN224694495U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of wastewater cooling systems in water collection wells, and in particular to a thermal system for interlocking control of wastewater temperature in dry quenching coke boilers. Background Technology
[0002] During the dry quenching process, the boiler wastewater temperature is typically maintained at a high level of 100-150℃. When this high-temperature wastewater is directly discharged into the collection well, a sudden pressure drop causes a violent flash evaporation, resulting in a large accumulation of steam in the collection well and causing severe backflow problems. This condition has multiple negative impacts: the continuous high-temperature environment accelerates the corrosion rate of metal equipment; steam accumulation poses safety hazards, especially in tightly sealed boilers in northern regions, where severe backflow in winter makes visibility difficult and poses a safety risk; high-temperature wastewater significantly shortens the service life of equipment such as pumps and causes continuous thermal damage to the entire drainage system pipeline.
[0003] The common industry solution is to install heat exchangers for cooling, but this method has limited cooling effect and cannot fundamentally solve the temperature control problem of water collection wells. Existing water collection well systems generally lack effective automatic adjustment mechanisms, mainly relying on manual observation and manual water replenishment for cooling. Due to excessive reliance on manual operation, the adjusted water temperature lags, leading to cavitation of the long-shaft submersible pump installed in the water collection well, and the wastewater cannot be effectively utilized.
[0004] Therefore, there is an urgent need in this field for a thermal system for interlocking control of the temperature of wastewater from dry quenching coke boilers to solve the above problems. Utility Model Content
[0005] The purpose of this invention is to provide a thermal system for interlocking control of wastewater temperature in dry quenching coke boilers, in order to solve the problems existing in the prior art. This system can cool the wastewater in the collection well without any manual intervention.
[0006] To achieve the above objectives, this utility model provides the following solution:
[0007] This utility model discloses a thermal system for interlocking control of wastewater temperature in a dry quenching coke boiler, including a water collection well, a cold water pipeline, and a wastewater pipeline. The inlet end of the cold water pipeline is connected to a cold water source, and the outlet end of the cold water pipeline is connected to the water collection well. The inlet end of the wastewater pipeline is connected to the outlet of the boiler wastewater discharge pipe, and the outlet end of the wastewater pipeline is connected to the water collection well.
[0008] An electric control valve is installed on the cold water pipeline, and a temperature monitoring device is installed in the water collection well. Both the electric control valve and the temperature monitoring device are electrically connected to the control device.
[0009] Preferably, the temperature monitoring device includes a gas phase monitoring temperature sensor and a liquid phase monitoring temperature sensor, with the gas phase monitoring temperature sensor located above the liquid phase monitoring temperature sensor.
[0010] Preferably, the gas phase monitoring temperature sensor is an infrared temperature sensor.
[0011] Preferably, the gas phase monitoring temperature sensor is located 200mm below the well cover of the water collection well.
[0012] Preferably, the liquid phase monitoring temperature sensor is a thermocouple.
[0013] Preferably, the liquid phase monitoring temperature sensor is provided with a protective housing.
[0014] Preferably, a pressure sensor is installed on the cold water pipeline.
[0015] Preferably, the water collection well is connected to a user's water supply pipeline.
[0016] Preferably, a water pump is connected to one end of the user water supply pipeline located inside the water collection well.
[0017] Preferably, the side wall of the water collection well is connected to a drainage pipe.
[0018] The present invention achieves the following technical advantages over the prior art:
[0019] This invention utilizes a temperature monitoring device to monitor the water temperature within a collection well. A cold water pipeline replenishes the collection well with cooler water, preventing high-temperature wastewater from causing excessively high temperatures within the well and affecting the lifespan of other equipment. Furthermore, the entire process is remotely monitored by a control device, eliminating the need for manual intervention and reducing the workload of staff. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0021] Figure 1 This is a schematic diagram of the thermal system for the interlocking control of wastewater temperature in a dry quenching coke boiler, according to an embodiment of this utility model.
[0022] In the diagram: 1-Water collection well; 2-Cold water pipeline; 3-Sewage pipeline; 4-Electric control valve; 5-Temperature monitoring device; 6-Pressure sensor; 7-User water supply pipeline; 8-Water pump; 9-Drainage pipeline. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] The purpose of this invention is to provide a thermal system for interlocking control of wastewater temperature in dry quenching coke boilers, in order to solve the problems existing in the prior art. This system can cool the wastewater in the collection well without any manual intervention.
[0025] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0026] like Figure 1 As shown, this embodiment provides a thermal system for interlocking control of wastewater temperature in a dry quenching coke boiler, including a collection well 1, a cold water pipeline 2, and a wastewater pipeline 3. The inlet of the cold water pipeline 2 is connected to a cold water source, which can be common industrial water. The outlet of the cold water pipeline 2 is connected to the collection well 1, thereby allowing the collection well 1 to be filled with industrial water at a lower temperature. The inlet of the wastewater pipeline 3 is connected to the outlet of the boiler wastewater pipe, and the outlet of the wastewater pipeline 3 is connected to the collection well 1. High-temperature wastewater (100-150℃) discharged from the boiler wastewater pipe outlet enters the collection well 1 through the wastewater pipeline 3.
[0027] An electric control valve 4 is installed on the cold water pipeline 2. The electric control valve 4 can be any existing electric valve capable of controlling pipeline flow. A temperature monitoring device 5 is installed in the water collection well 1 to monitor the temperature within the well. Both the electric control valve 4 and the temperature monitoring device 5 are electrically connected to a control device. The control device can receive data monitoring signals from the temperature monitoring device 5 and control the opening and closing of the electric control valve 4 based on the temperature signals. The control device can be an existing temperature controller, a back-end host, or a PLC controller, etc.
[0028] If it is necessary to discharge high-temperature wastewater into the collection well 1, the electric control valve 4 can be opened first to pre-supply some cold water into the collection well 1 via the cold water pipeline 2, and then the electric control valve 4 can be closed. This can reduce the temperature inside the collection well 1 and avoid problems such as flash evaporation or backflow caused by pouring in a large amount of wastewater. Then, the wastewater discharged from the boiler can be allowed to flow into the collection well 1. During the pouring process, the detection data of the temperature monitoring device 5 should be monitored in real time. If the temperature is too high, the electric control valve 4 can be opened in time to reduce the temperature in the collection well 1, so that the water temperature in the collection well 1 is kept below 40℃.
[0029] In this embodiment, since the water in the collection well 1 is not at full capacity, there are both gaseous and liquid phase environments. To improve the accuracy of temperature detection, the temperature monitoring device 5 includes a gaseous phase temperature sensor and a liquid phase temperature sensor. Both the gaseous and liquid phase temperature sensors are electrically connected to the control device. The gaseous phase temperature sensor is located above the liquid phase temperature sensor and is situated in the gaseous environment, where it is used to monitor the temperature of the gaseous environment. The liquid phase temperature sensor is situated in the liquid phase environment and is used to measure the water temperature in the collection well 1.
[0030] In this embodiment, the gas phase monitoring temperature sensor is an explosion-proof infrared temperature sensor that is available on the market, with a range of -20 to 300°C.
[0031] In this embodiment, the gas phase monitoring temperature sensor is located 200mm below the well cover of the water collection well 1 and above the liquid surface. It is used to monitor the temperature of the gas phase environment and transmit the temperature data to the control device in real time.
[0032] In this embodiment, the liquid phase monitoring temperature sensor is a thermocouple. The thermocouple has a response time of <1s. The thermocouple is used to measure the water temperature in the water collection well 1 and transmit the temperature data to the control device in real time.
[0033] In this embodiment, the liquid phase monitoring temperature sensor is equipped with a protective shell to protect the thermocouple and prevent it from direct contact with the water in the collection well 1, thus reducing the thermocouple's service life. The protective shell is made of zirconia ceramic, which has high corrosion resistance, thereby extending the thermocouple's service life.
[0034] In this embodiment, a pressure sensor 6 is installed on the cold water pipe 2, which can detect the water pressure of the cold water pipe 2 in real time. Furthermore, the pressure sensor 6 can be electrically connected to a control device to transmit pressure data to the control device.
[0035] In this embodiment, the water collection well 1 is connected to the user water supply pipeline 7. One end of the user water supply pipeline 7 is below the liquid level of the water collection well 1, and the other end is connected to the user end, which is the place where water needs to be used. Those skilled in the art can select the user end according to actual needs, so there is no limitation on it here.
[0036] In this embodiment, in order to pump water out of the collection well 1, a water pump 8 is connected to one end of the user water supply pipeline 7 located in the collection well 1. The water pump 8 can be an existing long-shaft submersible pump. One of the main reasons for controlling the water temperature in the collection well 1 to avoid it becoming too high is to prevent high-temperature water from affecting the service life of the long-shaft submersible pump.
[0037] In this embodiment, a drain pipe 9 is connected to the side wall of the water collection well 1. The purpose of setting the drain pipe 9 is to limit the liquid level. When the liquid level in the water collection well 1 is higher than the setting height of the drain pipe 9, the excess liquid will flow out from the drain pipe 9, thereby preventing the water storage in the water collection well 1 from becoming too large. The discharged water can be collected in other collection containers for subsequent treatment or utilization.
[0038] In the description of this utility model, it should be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0039] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0040] If this utility model discloses or relates to mutually fixedly connected parts or structural components, then, unless otherwise stated, a fixed connection can be understood as: a detachable fixed connection (e.g., using bolts or screws), or a non-detachable fixed connection (e.g., riveting, welding). Of course, mutually fixed connections can also be replaced by an integral structure (e.g., manufactured using a casting process) (except where it is obviously impossible to use an integral forming process).
[0041] In addition, unless otherwise stated, the terms used in any of the technical solutions disclosed in this utility model to indicate positional relationships or shapes include states or shapes that are similar to, close to, or approximate with those states or shapes.
[0042] Any component provided by this utility model can be assembled from multiple individual components, or it can be a single component manufactured by a one-piece molding process.
[0043] It should be noted that the structures, proportions, sizes, etc., depicted in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this utility model can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.
[0044] It should also be noted that in the embodiments of this application, the same reference numerals are used to denote the same component or the same part.
[0045] Any adaptive changes made according to actual needs are within the protection scope of this utility model.
[0046] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.
Claims
1. A thermal system for interlocking control of wastewater temperature in a dry quenching coke boiler, characterized in that: It includes a water collection well (1), a cold water pipeline (2) and a sewage pipeline (3). The inlet end of the cold water pipeline (2) is connected to a cold water source, and the outlet end of the cold water pipeline (2) is connected to the water collection well (1). The inlet end of the sewage pipeline (3) is connected to the outlet of the boiler sewage pipe, and the outlet end of the sewage pipeline (3) is connected to the water collection well (1). An electric control valve (4) is installed on the cold water pipeline (2), and a temperature monitoring device (5) is installed in the water collection well (1). The electric control valve (4) and the temperature monitoring device (5) are both electrically connected to the control device.
2. The thermal system for interlocking control of wastewater temperature in a dry quenching coke boiler according to claim 1, characterized in that: The temperature monitoring device (5) includes a gas phase monitoring temperature sensor and a liquid phase monitoring temperature sensor, with the gas phase monitoring temperature sensor located above the liquid phase monitoring temperature sensor.
3. The thermal system for interlocking control of wastewater temperature in a dry quenching boiler according to claim 2, characterized in that: The gas phase monitoring temperature sensor is an infrared temperature sensor.
4. The thermal system for interlocking control of wastewater temperature in a dry quenching boiler according to claim 2, characterized in that: The gas phase monitoring temperature sensor is located 200 mm below the well cover of the water collection well (1).
5. The thermal system for interlocking control of wastewater temperature in a dry quenching boiler according to claim 2, characterized in that: The liquid phase monitoring temperature sensor is a thermocouple.
6. The thermal system for interlocking control of wastewater temperature in a dry quenching boiler according to claim 5, characterized in that: The liquid phase monitoring temperature sensor is equipped with a protective housing.
7. The thermal system for interlocking control of wastewater temperature in a dry quenching boiler according to claim 1, characterized in that: A pressure sensor (6) is installed on the cold water pipeline (2).
8. The thermal system for interlocking control of wastewater temperature in a dry quenching boiler according to claim 1, characterized in that: The water collection well (1) is connected to the user's water supply pipeline (7).
9. The thermal system for interlocking control of wastewater temperature in a dry quenching coke boiler according to claim 7, characterized in that: The user water supply pipeline (7) is connected to a water pump (8) at one end inside the water collection well (1).
10. The thermal system for interlocking control of wastewater temperature in a dry quenching coke boiler according to claim 1, characterized in that: The side wall of the water collection well (1) is connected to a drainage pipe (9).