Boiler water sampling device for steam boiler

Abstract

The utility model discloses a boiler water sampling device for a steam boiler, which comprises a cooling water tank, a flushing component and a boiler water return pipe, a coil pipe is arranged in the cooling water tank, a cooling water inlet pipe and a cooling water outlet pipe are respectively arranged on the cooling water tank, and a boiler water inlet pipe and a boiler water outlet pipe are arranged at two ends of the coil pipe. The cooling water inlet pipe, the cooling water outlet pipe and the boiler water inlet pipe are provided with a first valve, a second valve and a third valve respectively, the boiler water outlet pipe is provided with a temperature sensor, a pump body and a fourth valve, and the connecting point of the boiler water return pipe and the boiler water outlet pipe is located between the pump body and the fourth valve. The connection point of the boiler water return pipe and the boiler water inlet pipe is located between the third valve and the water inlet end of the coil pipe, and a sixth valve is arranged on the boiler water return pipe. Boiler water reaching a set temperature is automatically discharged, and sampling is convenient and safe; after sampling is completed, the internal pipeline is automatically flushed and blow-dried to ensure that the pipeline is clean, so that the accuracy and reliability of each detection are ensured.

Description

Technical Field

[0001] This utility model relates to the field of boiler steam and water sampling technology, and in particular to a boiler water sampling device for steam boilers. Background Technology

[0002] To ensure the safe, economical, reliable, and stable operation of the boiler, and to produce qualified steam or hot water, timely boiler water treatment and necessary in-furnace chemical treatment are essential. Therefore, it is necessary to monitor water and steam quality according to relevant standards, and to take water samples from the boiler for testing to ensure the quality of the boiler water and steam, as well as the safe operation of the boiler. However, existing sampling devices have the following problems:

[0003] 1. After the high-temperature steam and water are cooled, the boiler water is discharged directly from the sampling port. Because it is impossible to directly and accurately judge the temperature of the boiler water, the sampling personnel are often injured due to the excessively high temperature of the boiler water.

[0004] 2. Since the boiler water is cooled through the same pipeline for each test, residual boiler water from the previous test will remain in the device. This residual boiler water will mix with the boiler water from the next test, thus causing deviations in the test results.

[0005] Therefore, it is necessary to develop a boiler water sampling device for steam boilers that can circulate and cool the boiler water to a set temperature, and automatically discharge the boiler water from the sampling port after reaching the set temperature. The sampling is convenient, safe and reliable. After sampling, the device can automatically flush and dry the internal pipelines, remove residual boiler water in the pipelines and blow the water out of the pipelines, thereby ensuring the accuracy and reliability of each test. Utility Model Content

[0006] To solve the above problems, the technical solution adopted by this utility model is as follows:

[0007] A boiler water sampling device for a steam boiler, comprising a cooling water tank and a sampling container, characterized in that:

[0008] The cooling water tank is equipped with a coil. The cooling water tank has a cooling water inlet pipe and a cooling water outlet pipe at its inlet and outlet ends, respectively. The coil has a boiler water inlet pipe and a boiler water outlet pipe at its inlet and outlet ends, respectively. The cooling water inlet pipe, cooling water outlet pipe, and boiler water inlet pipe are equipped with a first valve, a second valve, and a third valve, respectively. The other end of the boiler water outlet pipe is positioned above the sampling container. A temperature sensor, a pump body, and a fourth valve are sequentially arranged on the boiler water outlet pipe along the boiler water outlet direction.

[0009] It also includes a boiler water return pipe, the connection point of which is between the boiler water return pipe and the boiler water outlet pipe is located between the pump body and the fourth valve, the connection point of which is between the boiler water return pipe and the boiler water inlet pipe is located between the third valve and the inlet end of the coil, and a sixth valve is provided on the boiler water return pipe.

[0010] It also includes a flushing assembly for flushing residual boiler water in internal pipes when no sampling is required.

[0011] Preferably, the flushing assembly includes a bypass pipe, the connection point of the bypass pipe to the cooling water inlet pipe is close to the inlet end of the first valve, the connection point of the bypass pipe to the boiler water inlet pipe is close to the outlet end of the third valve, and a seventh valve is provided on the bypass pipe.

[0012] Preferably, the flushing assembly further includes an air pipe connected to a compressed air source, the connection point of the air pipe and the bypass pipe being close to the water outlet of the seventh valve, and a fifth valve being provided on the air pipe.

[0013] Preferably, a filter is provided on the bypass pipe.

[0014] Preferably, the pump body is a variable frequency pump.

[0015] Preferably, it also includes a first solenoid valve group, which includes a first valve, a second valve, a third valve, a fourth valve, and a sixth valve.

[0016] Preferably, it also includes a second solenoid valve assembly, which includes a fifth valve and a seventh valve.

[0017] Preferably, the cooling water tank is provided with a placement platform, and the sampling container is placed on the placement platform.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] This utility model can circulate and cool the generated boiler water. Once the set temperature is reached, the boiler water will be automatically discharged from the sampling port, making sampling convenient, safe, and reliable. After sampling, the internal pipeline can be automatically flushed and dried to remove residual boiler water and clean the water in the pipeline, thus ensuring the accuracy and reliability of each test. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] The components include: 1. Cooling water tank; 2. Sampling container; 3. Coil; 4. Temperature sensor; 5. Pump body; 6. Filter; 7. First solenoid valve group; 8. Second solenoid valve group; 11. Placement platform; 12. Compressed air source; 61. Bypass pipe; 71. First valve; 72. Second valve; 73. Third valve; 74. Fourth valve; 81. Fifth valve; 82. Seventh valve; 10. Cooling water inlet pipe; 20. Cooling water outlet pipe; 30. Boiler water inlet pipe; 40. Boiler water outlet pipe; 50. Boiler water return pipe; and 60. Detailed Implementation

[0022] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0023] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," "up," "down," "front," "back," and similar expressions used in this document are for illustrative purposes only.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0025] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments:

[0026] like Figure 1As shown, a boiler water sampling device for a steam boiler includes a cooling water tank 1 and a sampling container 2. A coil 3 is installed inside the cooling water tank 1. A cooling water inlet pipe 10 and a cooling water outlet pipe 20 are respectively installed on the inlet and outlet ends of the cooling water tank 1. A boiler water inlet pipe 30 and a boiler water outlet pipe 40 are respectively installed on the inlet and outlet ends of the coil 3. A first valve 71, a second valve 72, and a third valve 73 are respectively installed on the cooling water inlet pipe 10, the cooling water outlet pipe 20, and the boiler water inlet pipe 30. The other end of the boiler water outlet pipe 40 is placed above the sampling container 2. A temperature sensor 4, a pump body 5, and a fourth valve 74 are sequentially installed on the boiler water outlet pipe 40 along the boiler water outlet direction.

[0027] It also includes a boiler water return pipe 50, the connection point of which is between the boiler water return pipe 50 and the boiler water outlet pipe 40 is located between the pump body 5 and the fourth valve 74, the connection point of which is between the boiler water return pipe 50 and the boiler water inlet pipe 30 is located between the third valve 73 and the inlet end of the coil 3, and a sixth valve 75 is provided on the boiler water return pipe 50.

[0028] It also includes a flushing assembly for flushing residual boiler water in internal pipes when no sampling is required.

[0029] In this embodiment, during sampling, the first valve 71, the second valve 72, and the third valve 73 are opened, while the fourth valve 74 and the sixth valve 75 are closed. Cooling water continuously enters the cooling water tank 1, and at the same time, the high-temperature steam and water from the boiler enter the coil 3. After a set time, the third valve 73 closes, and the high-temperature steam and water are cooled in the coil 3 to form high-temperature boiler water. Then, the temperature sensor 4 detects the temperature of the high-temperature boiler water. When the detected temperature is higher than the set value, the sixth valve 75 opens, and the pump body 5 starts, causing the high-temperature boiler water to circulate in the coil 3. When the detected temperature is lower than the set value, the sixth valve 75 is closed and the fourth valve 74 is opened, allowing the boiler water that meets the temperature requirements to be discharged to the sampling container 2. After the set amount is discharged, the fourth valve 74 automatically closes. After sampling is completed, the flushing component is started to flush the residual boiler water in the internal pipes.

[0030] The above structure allows for the circulating cooling of the generated boiler water. Once the set temperature is reached, the boiler water is automatically discharged from the sampling port, preventing injury to sampling personnel due to high temperatures. Sampling is convenient, safe, and reliable. After sampling is completed, the internal pipelines are automatically flushed and dried, removing residual boiler water and cleaning the water in the pipelines, thus ensuring the accuracy and reliability of each test.

[0031] Furthermore, such as Figure 1As shown, in order to effectively remove residual boiler water in the pipeline and improve the accuracy of detection, the flushing assembly includes a bypass pipe 61. The connection point of the bypass pipe 61 with the cooling water inlet pipe 10 is close to the inlet end of the first valve 71, and the connection point of the bypass pipe 61 with the boiler water inlet pipe 30 is close to the outlet end of the third valve 73. A seventh valve 82 is provided on the bypass pipe 61.

[0032] During flushing, the third valve 73 and the sixth valve 75 are closed, and the seventh valve 82 and the fourth valve 74 are opened. Under the action of the pump body 5, the pressurized cooling water is flushed through the bypass pipe 61 in sequence through the boiler water inlet pipe 30, the coil 3 and the boiler water outlet pipe 40, thereby removing residual boiler water in the pipeline and improving the accuracy of the detection.

[0033] Furthermore, such as Figure 1 As shown, in order to remove residual water from the pipeline during flushing and ensure accurate and reliable detection, the flushing assembly also includes an air pipe 60 connected to the compressed air source 12. The connection point of the air pipe 60 and the bypass pipe 61 is close to the water outlet of the seventh valve 82. The air pipe 60 is equipped with a fifth valve 81.

[0034] After rinsing is completed, the purging process begins. The seventh valve 82, the third valve 73, and the sixth valve 75 are closed, while the fourth valve 74 and the fifth valve 81 are opened. The compressed air source 12 purges the boiler water inlet pipe 30, the coil 3, and the boiler water outlet pipe 40 through the air pipe 60 in sequence, thereby cleaning the water in the pipeline and ensuring the accuracy and reliability of the test.

[0035] Furthermore, such as Figure 1 As shown, in order to prevent impurities in the cooling water from entering the pipeline during flushing and to improve the reliability of flushing, a filter 6 is provided on the bypass pipe 61.

[0036] Furthermore, in order to meet the requirements of low-speed circulation and cooling of boiler water within coil 3 and high-speed flushing of pipelines by cooling water, the pump body 5 is a variable frequency pump.

[0037] Furthermore, such as Figure 1 As shown, in order to optimize the structure and realize integrated control of the on / off of each pipeline, it also includes a first solenoid valve group 7, which includes a first valve 71, a second valve 72, a third valve 73, a fourth valve 74 and a sixth valve 75.

[0038] Furthermore, such as Figure 1 As shown, in order to optimize the structure and realize integrated control of the on / off of each pipeline, a second solenoid valve group 8 is also included, which includes a fifth valve 81 and a seventh valve 82.

[0039] In this embodiment, each of the valves is a solenoid valve. Solenoid valves have advantages such as fast response speed, good stability, and strong controllability, which greatly improves the stability of the on / off control of each pipeline.

[0040] Furthermore, such as Figure 1 As shown, in order to improve the convenience and safety of sampling, a placement platform 11 is provided on the cooling water tank 1, and the sampling container 2 is placed on the placement platform 11.

[0041] For those skilled in the art, various other corresponding changes and modifications can be made based on the technical solutions and concepts described above, and all such changes and modifications should fall within the protection scope of the claims of this utility model patent.

Claims

1. A boiler water sampling device for a steam boiler, comprising a cooling water tank and a sampling container, characterized in that: The cooling water tank is equipped with a coil. The cooling water tank has a cooling water inlet pipe and a cooling water outlet pipe at its inlet and outlet ends, respectively. The coil has a boiler water inlet pipe and a boiler water outlet pipe at its inlet and outlet ends, respectively. The cooling water inlet pipe, cooling water outlet pipe, and boiler water inlet pipe are equipped with a first valve, a second valve, and a third valve, respectively. The other end of the boiler water outlet pipe is positioned above the sampling container. A temperature sensor, a pump body, and a fourth valve are sequentially arranged on the boiler water outlet pipe along the boiler water outlet direction. It also includes a boiler water return pipe, the connection point of which is between the boiler water return pipe and the boiler water outlet pipe is located between the pump body and the fourth valve, the connection point of which is between the boiler water return pipe and the boiler water inlet pipe is located between the third valve and the inlet end of the coil, and a sixth valve is provided on the boiler water return pipe. It also includes a flushing assembly for flushing residual boiler water in internal pipes when no sampling is required.

2. The boiler water sampling device for a steam boiler according to claim 1, characterized in that, The flushing assembly includes a bypass pipe, the connection point of which is with the cooling water inlet pipe is close to the inlet end of the first valve, the connection point of which is with the boiler water inlet pipe is close to the outlet end of the third valve, and a seventh valve is provided on the bypass pipe.

3. The boiler water sampling device for a steam boiler according to claim 2, characterized in that, The flushing assembly also includes an air pipe connected to a compressed air source. The connection point between the air pipe and the bypass pipe is near the outlet end of the seventh valve, and a fifth valve is provided on the air pipe.

4. The boiler water sampling device for a steam boiler according to claim 3, characterized in that, A filter is installed on the bypass pipe.

5. A boiler water sampling device for a steam boiler according to claim 1, characterized in that, The pump body is a variable frequency pump.

6. The boiler water sampling device for a steam boiler according to claim 1, characterized in that, It also includes a first solenoid valve group, which includes a first valve, a second valve, a third valve, a fourth valve, and a sixth valve.

7. A boiler water sampling device for a steam boiler according to claim 3, characterized in that, It also includes a second solenoid valve assembly, which includes a fifth valve and a seventh valve.

8. A boiler water sampling device for a steam boiler according to claim 1, characterized in that, The cooling water tank is equipped with a placement platform, and the sampling container is placed on the placement platform.

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