Gas-fired boiler cleaning and blowdown system

Abstract

The utility model discloses a gas-fired boiler cleaning and blowdown system, which comprises a water tank, a water tank, a water pump, a water pump, a water pump and a control system, and the water tank is supplied with water by external tap water; the water tank is provided with a water outlet pipeline and a water return pipeline; water inlets of the first boiler and the second boiler are respectively connected with a water outlet pipeline of the water tank, and water outlets of the first boiler and the second boiler respectively supply water to the first water using area and the second water using area through boiler hot water outlet pipelines; the first water using area and the second water using area are respectively connected with the water return tank through water return pipelines; a first valve is arranged on the water return pipeline, a sewage discharge pipe is connected in front of the first valve on the water return pipeline, and a second valve is arranged on the sewage discharge pipe. The device has the advantages that the first valve is arranged on the water return pipeline, and the sewage discharge pipe provided with the second valve is connected in front of the first valve on the water return pipeline, so that sewage generated in the cleaning process of the gas type boiler system can be quickly discharged and is prevented from entering the water return tank, and the effects of saving energy, saving water and saving time in the cleaning process are achieved.

Description

Technical Field

[0001] This utility model relates to the field of boiler cleaning technology, specifically to a gas-fired boiler cleaning and sewage discharge system. Background Technology

[0002] After a period of operation, the water supply pipes of a gas-fired boiler system may corrode and scale due to the effects of chemicals and microorganisms during long-term use. This causes substances in the scale to be released into the water, so the boiler system needs to be cleaned regularly once a quarter. However, a large amount of wastewater is generated during the cleaning process. The wastewater is circulated back to the water tank in the boiler system. According to statistics, it takes about a day to completely discharge the wastewater through water circulation.

[0003] Wastewater typically contains rust, impurities, manganese oxide, microorganisms, and chemicals. If the water pipes are made of cast iron, they may rust inside after prolonged use, leading to the formation of black substances (rust residue). Impurities are generally found in tap water and can also contribute to the appearance of black substances. During the water supply process, manganese ions in the water may oxidize to form manganese oxide, which can deposit on the pipe walls and, in some cases, leach into the water, causing it to turn black.

[0004] Currently, when cleaning and maintaining gas-fired boilers, the wastewater in the pipes circulates within the system. Part of it is used by the user, while the other part flows back to the water tank through the return water pipe, causing the water in the tank to become polluted. After cleaning, the water in the tank needs to go through about a day to be completely circulated clean. Utility Model Content

[0005] Therefore, it is necessary to provide a gas-fired boiler cleaning and sewage discharge system to address the existing problems mentioned above. This system can quickly discharge the sewage generated during the cleaning process of the gas-fired boiler system and prevent sewage from entering the water tank, thereby achieving energy saving, water saving, and time saving. Furthermore, the boiler system can be operated alternately, which helps to extend the service life of the boiler.

[0006] A gas-fired boiler cleaning and sewage discharge system, characterized in that it includes:

[0007] The water tank is supplied with water from an external tap. The water tank has an outlet pipe and a return pipe.

[0008] The first boiler and the second boiler have their inlets connected to the outlet pipes of the water tank, and their outlets supply water to the first water area and the second water area through the boiler hot water outlet pipes, respectively.

[0009] The first and second water use areas are also connected to the return water tank via return water pipes.

[0010] The first valve is arranged on the return water pipeline, and a sewage pipeline is connected in front of the first valve.

[0011] The gas type boiler cleaning and sewage system has the following advantages:

[0012] The sewage pipeline is connected to a sewer in the boiler room.

[0013] The gas type boiler cleaning and sewage system has the following advantages:

[0014] A water quality detection device is arranged behind the second valve on the sewage pipeline.

[0015] The gas type boiler cleaning and sewage system has the following advantages:

[0016] The water quality detection device comprises a water quality detection box, one end of which is connected to the sewage pipeline through an inlet water sampling pipeline, and the other end of which is connected to the sewage pipeline through an outlet water sampling pipeline; a third valve is arranged on the inlet water sampling pipeline, and a fourth valve is arranged on the outlet water sampling pipeline; and a detection device is arranged in the water quality detection box.

[0017] The gas type boiler cleaning and sewage system has the following advantages:

[0018] A visual window is further arranged on the water quality detection box.

[0019] The gas type boiler cleaning and sewage system has the following advantages:

[0020] The detection device comprises a water dissolved oxygen meter, a PH value detector and a hardness detector.

[0021] The gas type boiler cleaning and sewage system has the following advantages:

[0022] A PLC controller is arranged on the water quality detection box, and the PLC controller is electrically connected with the water dissolved oxygen meter, the PH value detector and the hardness detector.

[0023] The gas type boiler cleaning and sewage system has the following advantages:

[0024] The water tank, the sewage pipeline, the first valve, the second valve, the first boiler and the second boiler are all arranged in the boiler room.

[0025] The gas type boiler cleaning and sewage system has the following advantages:

[0026] 1. The first valve is arranged on the return water pipeline, and a sewage pipeline provided with the second valve is connected in front of the first valve on the return water pipeline, so that the sewage generated in the cleaning process of the gas type boiler system can be quickly discharged, and the sewage can be prevented from flowing back to the water tank, thereby achieving the effect of energy saving, water saving and time saving in the cleaning process.

[0027] 2. The boiler system is provided with two boilers, one standby and one in use, which are alternately operated to help improve the service life of the boiler. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 A structure block diagram of the gas type boiler cleaning and blowdown system of the present application;

[0029] Figure 2 A connection position relation diagram of the water quality detection box, the water dissolved oxygen instrument, the PH value detector, the hardness detector and the PLC controller in the gas type boiler cleaning and blowdown system of the present application. DETAILED DESCRIPTION

[0030] In order to make the above objectives, characteristics and advantages of the present application more apparent, specific embodiments of the present application will be described in detail below with reference to the drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. It will be apparent, however, to one skilled in the art that the present application can be practiced in a variety of ways beyond the specific embodiments described herein without departing from the spirit of the present application, and that the present application is not limited to the specific embodiments disclosed below. In other instances, well-known methods, procedures, components and networks have not been described in detail since it would be appreciated by persons skilled in the art that, in the interest of brevity and for avoiding unnecessarily obscuring the present application, they can be implemented in any form without departing from the spirit of the present application.

[0031] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0032] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements, unless otherwise specifically limited. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0033] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0034] Referring to Figure 1 The utility model provides a kind of gas type boiler cleaning blowdown system, comprising: water tank 1, by external tap water supply, water tank 1 has a water outlet pipeline 4 and a backwater pipeline 7;First boiler 21 and second boiler 22, its water inlet respectively connects the water outlet pipeline 4 of water tank 1, its water outlet respectively through boiler hot water outlet pipeline 5 to first water area 31 and second water area 32 water supply, two boilers can be alternately operated, one is used, help to promote the service life of boiler;First water area 31 and second water area 32 are also connected backwater tank 1 through backwater pipeline 7, in the embodiment, first water area 31 is connected backwater pipeline 7 through first loop 61, and second water area 32 is connected backwater pipeline 7 through second loop 62;First valve 91 is equipped on backwater pipeline 7, and a blowdown water pipe 8 is connected before first valve 91 on backwater pipeline 7, and second valve 92 is equipped on blowdown water pipe 8, and the first valve 91 on backwater pipeline 7 here before refers to the water inlet direction of backwater pipeline 7;Water tank 1, blowdown water pipe 8, first valve 91, second valve 92, first boiler 21 and second boiler 22 are located in boiler room. Blowdown water pipe 8 is connected to sewer in boiler room, so that the discharged sewage can be directly flowed into sewer and discharged when boiler is washed.

[0035] The working principle of the gas type boiler cleaning and blowdown system is that, in daily use, the first valve 91 is open, the second valve 92 is closed, the blowdown water pipe 8 is disconnected and not used, and the two boilers are alternately operated by gas energy supply, one standby and one use to supply hot water to the system. The tap water source continuously enters the water tank 1, then flows into the operating boiler, is heated by the boiler to the set temperature, and at the same time provides hot water source for the first water area 31 and the second water area 32. The excess hot water is returned to the water tank 1 to realize water circulation. When one of the boilers fails or needs to be repaired, the standby boiler immediately takes over to ensure the continuous operation of the heating system and avoid interruption of heating. When one of the boilers needs to be cleaned, the other boiler is kept running, the first valve 91 is closed, and the second valve 92 is opened. In this way, the sewage generated during the cleaning process is directly discharged to the outside through the blowdown water pipe 8 and does not flow back to the water tank 1, ensuring the cleanliness of the water in the water tank and avoiding the problem of water pollution caused by the flow of sewage in the pipe back to the water tank in the original system without a blowdown water pipe. The blowdown water pipe is arranged in front of the water tank instead of other positions, which requires less modification of the system and reduces the difficulty of maintenance, making it suitable for most scenarios.

[0036] In this embodiment, a water quality detection device 10 is arranged behind the second valve 92 on the blowdown water pipe 8. The second valve 92 refers to the outlet direction. The water quality detection device 10 is installed on the branch pipe, which can help the staff understand the turbidity of the sewage and the discharge progress, facilitate timely cut-off of the drainage, and achieve the effect of energy saving and emission reduction.

[0037] As shown in the figure, Figure 2 The water quality detection device 10 includes a water quality detection box 101, one end of which is connected to the blowdown water pipe 8 through an inlet water sampling pipe, and the other end is connected to the blowdown water pipe 8 through an outlet water sampling pipe. A third valve 93 is arranged on the inlet water sampling pipe, and a fourth valve 94 is arranged on the outlet water sampling pipe. The third valve 93 and the fourth valve 94 are preferably one-way valves to ensure one-way flow of the sewage and ensure the accuracy of sewage detection. When it is necessary to detect the quality of the discharged sewage, the third valve 93 and the fourth valve 94 can be opened at the same time. A visual window can also be arranged on the water quality detection box 10 to facilitate visual observation of the water quality. The water quality detection box 101 is provided with a detection device, which can be a conventional electronic device for detecting water quality. In this example, the detection device is a water dissolved oxygen meter 102, a PH value detector 103, and a hardness detector 104. The water quality detection box 101 is provided with a PLC controller 105, which is electrically connected with the water dissolved oxygen meter 103, the PH value detector 104, and the hardness detector 105. In another example, the PLC controller 105 can continue to transmit the detection data to the interactive device through remote data transmission technology, so that the staff can real-time understand the water quality data. This technology is a conventional technical means and will not be described in detail.

[0038] Any combination of the technical features in the above-described embodiments can be made, and for the sake of brevity, not all possible combinations are described, however, as long as the combination of the technical features does not exist in contradiction, it shall be considered as the scope of the description.

[0039] The above-described embodiments only express several implementation manners of the utility model, the description is more specific and detailed, but it cannot be understood as the limitation of the utility model patent scope. It should be pointed out that for ordinary skilled person in the art, under the premise of not departing from the utility model concept, a number of modifications and improvements can be made, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be subject to the appended claims.

Claims

1. A gas-fired boiler cleaning and purging system, comprising: The system comprises: a water tank supplied with water from an external water supply, the water tank having a water outlet pipe and a water return pipe; a first boiler and a second boiler, the water inlets of the first and second boilers being connected to the water outlet pipe of the water tank, and the water outlets of the first and second boilers being connected to a first water using area and a second water using area through a boiler hot water outlet pipe; the first and second water using areas being further connected to the water return pipe of the water tank; a first valve being provided on the water return pipe, and a sewage pipe being connected to the water return pipe before the first valve, and a second valve being provided on the sewage pipe.

2. The system according to claim 1, wherein: the sewage pipe is connected to a sewer in a boiler room.

3. The system according to claim 1, wherein: a water quality detection device is provided on the sewage pipe after the second valve.

4. The system according to claim 3, wherein: the water quality detection device comprises a water quality detection tank, one end of the water quality detection tank being connected to the sewage pipe through a water inlet sampling pipe, and the other end of the water quality detection tank being connected to the sewage pipe through a water outlet sampling pipe, a third valve being provided on the water inlet sampling pipe, and a fourth valve being provided on the water outlet sampling pipe, and a detection device being provided in the water quality detection tank.

5. The system according to claim 4, wherein: a visual window is further provided on the water quality detection tank.

6. The system according to claim 4, wherein: the detection device comprises a water dissolved oxygen meter, a PH value detector and a hardness detector.

7. The system according to claim 6, wherein: a PLC controller is provided on the water quality detection tank, and the PLC controller is electrically connected to the water dissolved oxygen meter, the PH value detector and the hardness detector.

8. The system according to claim 1, wherein: the water tank, the sewage pipe, the first valve, the second valve, the first boiler and the second boiler are all located in a boiler room.

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