Thermal power plant boiler water vapor sampling device

Abstract

The utility model discloses a thermal power plant boiler water vapor sampling device which comprises a sampling device body installed at the bottom of a thermal power plant boiler water vapor pipe, and the sampling device body comprises a fixed seat fixedly installed at the bottom of the thermal power plant boiler water vapor pipe. A PLC, a red light prompting lamp and a green light prompting lamp are fixedly installed at the bottom of the fixing base, wherein the red light prompting lamp and the green light prompting lamp are electrically connected with the PLC. By arranging a series of structures, iron corrosion products and other sediments can be conveniently and automatically filtered and intercepted in the sampling process, workers do not need to independently filter out the sediments in the subsequent detection process, the use convenience is improved, automatic quantitative sampling and automatic cooling when the temperature is high are facilitated, the workers are automatically reminded when the temperature is reduced to a preset value, and the work efficiency is improved. The sampling amount and temperature can be automatically and accurately controlled, personnel can conveniently, safely and accurately sample water vapor, the phenomena that the personnel directly take out the water vapor and are scalded by high temperature accidentally and the sampling amount is too large are prevented, and the sampling safety and accuracy are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of boiler water vapor sampling, in particular to a water vapor sampling device for a thermal power plant boiler. Background Art

[0002] A thermal power plant refers to a thermal power plant that uses extraction or exhaust steam from steam turbines to provide heat to users while generating electricity. Its main working principle is to use the hot water generated by the thermal power plant and reheat it for heating. During its operation, in order to prevent the poor quality of water and steam from affecting the working performance of the thermal engine, a sampling device needs to be set up to sample the water vapor in its water pipes.

[0003] Regarding sampling of boiler water vapor pipes, in the prior art, patent publication number CN213301781U discloses a water vapor sampling device for a thermal power plant, comprising a fifth conduit, a fourth shell being welded to one side of the interior of the fifth conduit, a seventh conduit being connected to one side of the fourth shell, a second shell being welded to one side of the fifth conduit, a sixth conduit being connected to one side of the fourth shell, a sixth conduit passing through one side of the fifth conduit, and a second water pump being installed on one side of the interior of the second shell. When the device is in use, part of the water vapor in the fifth conduit is intercepted and transferred to the fourth shell by providing the seventh conduit. When the amount of water vapor in the fourth shell reaches a certain level, the float is driven to rise, causing the rod to be inserted into the socket to trigger the contact, thereby activating a timer switch. The timer switch controls the second water pump and the vortex cooler to operate for a fixed time, so that the vortex cooler cools a fixed amount of water vapor each time, reduces its working pressure, and makes the water vapor cooling effect more stable.

[0004] Although the above-mentioned existing boiler water vapor pipe sampling device can perform sampling work, it still needs to face the following problems when in use: 1. Since the water vapor carries iron corrosion products and sediments of the thermal system, the iron corrosion products and sediments are directly taken out together with the water sample, and personnel need to filter out the sediments separately during subsequent testing. The subsequent separate filtering method is not ideal in terms of operational convenience (iron corrosion products and sediments will also block the water vapor channel or water pump and vortex cooler); 2. (Although the above-mentioned existing technology has a cooling function, it cannot automatically and accurately control the temperature), the water vapor sampling volume and temperature are difficult to accurately control, and the phenomenon of excessive sampling volume is prone to occur. When the residual temperature is still high during sampling, there is still a risk of accidental scalding of personnel, and the sampling safety and accuracy are not ideal. In view of this, the present application proposes a thermal power plant boiler water vapor sampling device. Utility Model Content

[0005] The purpose of the utility model is to provide a water vapor sampling device for a thermal power plant boiler to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a water vapor sampling device for a thermal power plant boiler, comprising a sampling device body mounted at the bottom of a water vapor pipe of the thermal power plant boiler, the sampling device body comprising a fixing base fixedly mounted at the bottom of the water vapor pipe of the thermal power plant boiler, a PLC controller and a red light and a green light indicating light electrically connected thereto fixedly mounted at the bottom of the fixing base, and a solenoid valve electrically connected to the PLC controller fixedly connected to the bottom of the water vapor pipe of the thermal power plant boiler;

[0007] The bottom of the fixed seat is fixedly installed with a filter assembly that is connected to the bottom end of the solenoid valve, and the right side of the filter assembly is connected to and fixed with a flow sensor electrically connected to the PLC controller. The right side of the flow sensor is connected to and fixed with a sample storage box, and the bottom rear side of the sample storage box is connected to and fixed with a drain valve. The left bottom of the sample storage box is fixedly installed with a temperature sensor electrically connected to the PLC controller, and the detection end of the temperature sensor extends into the sample storage box. The set PLC controller can pre-set the flow value for controlling the solenoid valve to close and the red light prompt light to turn on according to the required sampling volume, and can pre-set the temperature value for controlling the green light prompt light to turn on according to the sampling temperature requirement. The filter assembly is used to filter and collect sediments such as iron corrosion products in water vapor when the solenoid valve is opened to supply water vapor, and supply it to the sample storage box through the flow sensor, and use the flow sensor to detect the flow and transmit the flow value to the PLC controller. When the preset value is reached, the PLC controller controls the solenoid valve to close and the red light prompt light to turn on, so as to achieve accurate and quantitative sampling of water vapor and timely alarm to remind personnel that sampling is completed;

[0008] A heat dissipation component electrically connected to the PLC controller is provided on the outside of the sample storage box. The heat dissipation component is used to be controlled by the PLC controller to dissipate heat from the water vapor sample through the sample storage box. When the water vapor drops to a preset temperature value, the PLC controller controls the green light to turn on to remind personnel, thereby preventing personnel from accidentally getting burned by high temperature when taking out the sample directly.

[0009] Preferably, the filter assembly includes an L-shaped tube connected and fixed to the bottom end of the solenoid valve, the right end of the L-shaped tube is connected and fixed to a rectangular box fixedly mounted on the bottom of the fixed seat, a filter plate is movably sleeved in the rectangular box, the front side of the filter plate extends to the front of the rectangular box and is fixedly connected to a baffle, the baffle is fixedly mounted on the front side of the rectangular box by two screws, the front side of the baffle is fixedly connected to a U-shaped handle, and the right side of the rectangular box is connected and fixed to the left side of the flow sensor.

[0010] Preferably, the heat dissipation assembly includes a plurality of heat dissipation fins respectively fixed on the right side and bottom of the sample storage box. An air cooler is fixedly installed on the bottom of the rectangular box. The right side of the air cooler is an air outlet and is connected and fixed with an L-shaped tube. The top of the L-shaped tube is set as a blocking structure. The inner right side and the inner bottom of the L-shaped tube are connected and fixed with a plurality of air blowing hoods, which are adapted to the corresponding heat dissipation fins. The left side of the air cooler is an air inlet and is fixed with a filter. The air cooler is electrically connected to the PLC controller.

[0011] Preferably, four support rods are fixedly connected in a rectangular shape between the top of the sample storage box and the bottom of the fixing seat, and the sample storage box is made of copper.

[0012] Preferably, a rectangular through-hole is formed on the front side of the rectangular box, and an inner wall of the rectangular through-hole is in movable contact with the outer side of the filter plate.

[0013] Preferably, a sealing rubber pad is bonded and fixed to the rear side of the baffle, and the rear side of the sealing rubber pad is in movable contact with the front side of the rectangular box.

[0014] Preferably, the drain valve is located at the rear side of the L-shaped tube.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. This thermal power plant boiler water vapor sampling device, through the coordination of the electromagnetic valve, filter assembly, flow sensor, sample storage box and drain valve, can automatically filter and intercept sediments such as iron corrosion products during sampling, eliminating the need for personnel to filter out the sediments separately during subsequent testing, thereby improving ease of use.

[0017] 2. This thermal power plant boiler water vapor sampling device, through the cooperation of the set PLC controller, flow sensor, red light indicator, green light indicator, sample storage box, heat dissipation component and temperature sensor, can automatically take quantitative samples and automatically cool down when the temperature is high, and automatically remind personnel when the temperature drops to the preset value, so as to facilitate automatic and accurate control of the sampling volume and temperature, and then facilitate personnel to sample water vapor safely and accurately, prevent personnel from accidentally getting burned by high temperature when taking out directly, and avoid the phenomenon of excessive sampling, thereby improving the safety and accuracy of sampling.

[0018] The utility model is provided with a series of structures, which facilitates the automatic filtering and interception of sediments such as iron corrosion products during sampling, and eliminates the need for personnel to filter out the sediments separately during subsequent testing, thereby improving ease of use, facilitating automatic quantitative sampling and automatic cooling when the temperature is high, and automatically reminding personnel when the temperature drops to a preset value. It can automatically and accurately control the sampling volume and temperature, making it convenient for personnel to sample water vapor safely and accurately, preventing personnel from accidentally being burned by high temperature or sampling too much when taking out the sample directly, thereby improving sampling safety and accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of a water vapor sampling device for a thermal power plant boiler proposed by the utility model;

[0020] Figure 2 for Figure 1 Schematic diagram of the structure viewed from above;

[0021] Figure 3 This is a schematic diagram of the main cross-sectional structure of a water vapor sampling device for a thermal power plant boiler proposed by the utility model.

[0022] In the figure: 100, water vapor pipe of thermal power plant boiler; 1, solenoid valve; 2, fixing seat; 3, rectangular box; 4, filter plate; 5, flow sensor; 6, sample storage box; 7, drain valve; 8, PLC controller; 9, red light; 10, green light; 11, L-shaped pipe; 12, air cooler; 13, air hood; 14, heat sink fin; 15, temperature sensor; 16, baffle. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] like Figures 1 to 3 As shown, a thermal power plant boiler water vapor sampling device proposed in this embodiment includes a sampling device body installed at the bottom of a thermal power plant boiler water vapor pipe 100. The sampling device body includes a fixing base 2 fixedly installed at the bottom of the thermal power plant boiler water vapor pipe 100. A PLC controller 8 and a red light indicator 9 and a green light indicator 10 electrically connected thereto are fixedly installed at the bottom of the fixing base 2. A solenoid valve 1 electrically connected to the PLC controller 8 is fixedly connected to the bottom of the thermal power plant boiler water vapor pipe 100.

[0025] A filter assembly connected to the bottom of the solenoid valve 1 is fixedly installed at the bottom of the fixing seat 2, a flow sensor 5 electrically connected to the PLC controller 8 is fixedly connected to the right side of the filter assembly, a sample storage box 6 is fixedly connected to the right side of the flow sensor 5, a drain valve 7 is fixedly connected to the bottom rear side of the sample storage box 6, a temperature sensor 15 electrically connected to the PLC controller 8 is fixedly installed at the bottom left side of the sample storage box 6, the detection end of the temperature sensor 15 extends into the sample storage box 6, and the PLC controller 8 can be pre-set to control the solenoid valve 1 to close according to the required sampling volume. The flow value of closing and turning on the red light prompt light 9 can be preset, and the temperature value for controlling the turning on of the green light prompt light 10 can be preset according to the sampling temperature requirement. The filter component is used to filter and collect the sediments such as iron corrosion products in the water vapor when the solenoid valve 1 is opened to supply water vapor, and supply it to the sample storage box 6 through the flow sensor 5. The flow sensor 5 is used to detect the flow and transmit the flow value to the PLC controller 8. When the preset value is reached, the PLC controller 8 controls the solenoid valve 1 to close and the red light prompt light 9 to turn on, so as to realize accurate quantitative sampling of water vapor and timely alarm to remind personnel that the sampling is completed;

[0026] A heat dissipation component electrically connected to the PLC controller 8 is provided on the outside of the sample storage box 6, wherein four support rods are fixedly connected in a rectangular shape between the top of the sample storage box 6 and the bottom of the fixed seat 2. The sample storage box 6 is made of copper, which plays a role in fixing and supporting the sample storage box 6, and the sample storage box 6 made of copper can achieve better heat conduction effect. The heat dissipation component is used to be controlled by the PLC controller 8 to dissipate heat to the water vapor sample through the sample storage box 6. When the water vapor drops to a preset temperature value, the PLC controller 8 controls the green light indicator 10 to turn on to remind personnel, thereby preventing personnel from accidentally taking out the sample and getting burned by high temperature.

[0027] Specifically, the filter assembly includes an L-shaped tube connected and fixed to the bottom end of the solenoid valve 1, the right end of the L-shaped tube is connected and fixed to a rectangular box 3 fixedly installed on the bottom of the fixing seat 2, a filter plate 4 is movably sleeved in the rectangular box 3, the front side of the filter plate 4 extends to the front of the rectangular box 3 and is fixedly connected to a baffle 16, the baffle 16 is fixedly installed on the front side of the rectangular box 3 by two screws, the front side of the baffle 16 is fixedly connected to a U-shaped handle, the right side of the rectangular box 3 is connected and fixed to the left side of the flow sensor 5, wherein a rectangular through-hole is opened on the front side of the rectangular box 3, and the inner wall of the rectangular through-hole is in movably contact with the outer side of the filter plate 4, a sealing gasket is bonded and fixed to the back side of the baffle 16, the back side of the sealing gasket is in movably contact with the front side of the rectangular box 3, and the provided sealing gasket is used to seal the rectangular through-hole; a setting is provided The L-shaped tube, rectangular box 3, filter plate 4, baffle 16 and U-shaped handle cooperate. When the solenoid valve 1 is opened, the water vapor in the water vapor pipe 100 of the thermal power plant boiler enters the rectangular box 3 through the solenoid valve 1 and the L-shaped tube in turn, and then passes through the filter plate 4 to enter the flow sensor 5. The filter plate 4 is used to filter, block and collect the iron corrosion products and other sediments in the water vapor in the rectangular box 3, thereby achieving the effect of filtering, blocking and collecting the iron corrosion products and other sediments in the water vapor, and preventing the iron corrosion products and other sediments from flowing backward and clogging the flow sensor 5. In addition, when the filter plate 4 needs to be disassembled and cleaned later, the personnel will remove the two screws fixing the baffle 16, and can pull the U-shaped handle forward to drive the baffle 16 forward. The baffle 16 drives the filter plate 4 to move out of the rectangular perforation, and it can be cleaned.

[0028] Furthermore, the heat dissipation component includes a plurality of heat dissipation fins 14 respectively fixed on the right side and bottom of the sample storage box 6, an air cooler 12 is fixedly installed on the bottom of the rectangular box 3, the right side of the air cooler 12 is an air outlet and is connected and fixed with an L-shaped tube 11, the top of the L-shaped tube 11 is set as a blocking structure, the inner right side and the inner bottom of the L-shaped tube 11 are connected and fixed with a plurality of air blowing hoods 13, the air blowing hoods 13 are adapted to the corresponding heat dissipation fins 14, the left side of the air cooler 12 is an air inlet and is fixedly connected with a filter, the air cooler 12 is electrically connected to the PLC controller 8, and the drain valve 7 is located on the rear side of the L-shaped tube 11; the air cooler 12, L-shaped tube 11, air blowing hood 13 and filter are arranged in coordination, and the temperature sensor 15 is used to detect The water vapor temperature is transmitted to the PLC controller 8 temperature value. When the temperature value is higher than the preset value, the PLC controller 8 controls the air cooler 12 to turn on, so that it supplies air to the L-shaped tube 11. The wind is blown out through multiple blowing hoods 13 to cool the heat dissipating fins 14. The heat dissipating fins 14 absorb the water vapor temperature through the sample storage box 6 and perform external cooling. The use of wind can enhance the heat dissipation efficiency of the heat dissipating fins 14. When the temperature value drops below the preset value, the PLC controller 8 controls the air cooler 12 to turn off and the green light prompt light 10 to turn on, so as to achieve the effect of automatically cooling the water vapor sample during water vapor sampling and automatically reminding personnel in time after the cooling is completed, so as to facilitate personnel to take samples safely and prevent personnel from accidentally getting burned by high temperature when taking out directly.

[0029] The method of using this embodiment is as follows: pre-set the flow value for controlling the solenoid valve 1 to be closed and the red light indicator 9 to be turned on using the PLC controller 8 according to the required sampling volume, and pre-set the temperature value for controlling the green light indicator 10 to be turned on and the air cooler 12 to be turned off using the PLC controller 8 according to the sampling temperature requirement. When sampling, if the temperature value received by the PLC controller 8 is higher than the preset temperature value, the air cooler 12 will be controlled to be turned on. When sampling, the personnel control the solenoid valve 1 to be opened through the PLC controller 8. When the solenoid valve 1 is opened, the water vapor in the water vapor pipe 100 of the thermal power plant boiler enters the matrix through the solenoid valve 1 and the L-shaped pipe in sequence. Rectangular box 3, then passes through the filter plate 4 and enters the flow sensor 5, and then enters the sample storage box 6. The filter plate 4 is used to filter, block and collect the iron corrosion products and other sediments in the water vapor in the rectangular box 3, thereby achieving the effect of filtering, blocking and collecting the iron corrosion products and other sediments in the water vapor, preventing the iron corrosion products and other sediments from flowing backward and blocking the flow sensor 5, and preventing the iron corrosion products and other sediments from entering the sample storage box 6 together with the water vapor. By automatically filtering and intercepting the iron corrosion products and other sediments during sampling, there is no need for personnel to filter out the sediments separately during subsequent testing, thereby improving the convenience of use;

[0030] Among them, when water vapor passes through the flow sensor 5, the flow sensor 5 detects the water vapor flow and transmits the flow value to the PLC controller 8. When the preset value is reached, the PLC controller 8 controls the solenoid valve 1 to close and the red light prompt light 9 to turn on, so as to achieve the effect of accurate quantitative sampling of water vapor and timely alarm to remind personnel that the sampling is completed. In addition, the temperature sensor 15 detects the water vapor temperature in the sample storage box 6 and transmits the temperature value to the PLC controller 8. When the temperature value is higher than the preset value, the PLC controller 8 controls the air cooler 12 to turn on, so that it supplies air to the L-shaped tube 11. The wind is blown out through multiple blowing hoods 13 to cool the heat dissipating fins 14. The heat dissipating fins 14 absorb the water vapor temperature through the sample storage box 6 and perform external cooling work, which is beneficial to the operation of the cooling fan 12. Blowing with wind can enhance the heat dissipation efficiency of the heat dissipation fins 14. When the temperature value drops below the preset value, the PLC controller 8 controls the air cooler 12 to turn off and the green light prompt light 10 to turn on, so as to automatically and quickly cool the water vapor sample when the water vapor is sampled and automatically and promptly remind the personnel after the cooling is completed. Then the personnel can open the drain valve 7 to take out the water vapor sample. Through automatic quantitative sampling and automatic cooling when the temperature is high, combined with the automatic reminder of the personnel when the temperature drops to the preset value, it is convenient to automatically and accurately control the sampling amount and temperature, facilitate personnel to sample water vapor safely and accurately, prevent personnel from accidentally being burned by high temperature by directly taking out the water vapor, and avoid the phenomenon of excessive sampling, thereby improving the safety and accuracy of sampling;

[0031] When the filter plate 4 needs to be disassembled and cleaned later, the personnel remove the two screws fixing the baffle 16, and then pull the U-shaped handle forward to drive the baffle 16 forward. The baffle 16 drives the filter plate 4 out of the rectangular perforation, and then it can be cleaned.

[0032] Among them, the PLC controller 8, solenoid valve 1, temperature sensor 15, flow sensor 5, red light indicator 9 and green light indicator 10 in the present invention are well known to those skilled in the art, and are conventional means or common knowledge. Those skilled in the art can make any optional selections according to their needs or convenience. In addition, the PLC controller 8 receives the flow value transmitted by the flow sensor 5 and controls the solenoid valve 1 to close when the preset value is reached, and receives the temperature value transmitted by the temperature sensor 15 and controls the air cooler 12 to start and close and the green light indicator 10 to turn on according to the preset value. These are basic programming parameter setting control methods well known to those skilled in the art, and are all conventional means or common knowledge, so they will not be repeated here.

[0033] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A water vapor sampling device for a thermal power plant boiler, comprising a sampling device body installed at the bottom of a water vapor pipe (100) of the thermal power plant boiler, characterized in that: The sampling device body comprises a fixing base (2) fixedly mounted on the bottom of a water vapor pipe (100) of a thermal power plant boiler; a PLC controller (8) and a red light indicator (9) and a green light indicator (10) electrically connected thereto are fixedly mounted on the bottom of the fixing base (2); and a solenoid valve (1) electrically connected to the PLC controller (8) is fixedly connected to the bottom of the water vapor pipe (100) of the thermal power plant boiler; A filter assembly connected to and fixed to the bottom of the solenoid valve (1) is fixedly mounted on the bottom of the fixing seat (2); a flow sensor (5) electrically connected to the PLC controller (8) is fixedly mounted on the right side of the filter assembly; a sample storage box (6) is fixedly mounted on the right side of the flow sensor (5); a drain valve (7) is fixedly mounted on the bottom of the sample storage box (6); a temperature sensor (15) electrically connected to the PLC controller (8) is fixedly mounted on the left bottom of the sample storage box (6); and a detection end of the temperature sensor (15) extends into the sample storage box (6); A heat dissipation component electrically connected to the PLC controller (8) is provided on the outside of the sample storage box (6).

2. A thermal power plant boiler water vapor sampling device according to claim 1, characterized in that: The filter assembly comprises an L-shaped tube connected and fixed to the bottom end of the solenoid valve (1); the right end of the L-shaped tube is connected and fixed to a rectangular box (3) fixedly mounted on the bottom of the fixing seat (2); a filter plate (4) is movably sleeved in the rectangular box (3); the front side of the filter plate (4) extends to the front of the rectangular box (3) and is fixedly connected to a baffle (16); the baffle (16) is fixedly mounted on the front side of the rectangular box (3) by two screws; the front side of the baffle (16) is fixedly connected to a U-shaped handle; the right side of the rectangular box (3) is connected and fixed to the left side of the flow sensor (5); 3. A thermal power plant boiler water vapor sampling device according to claim 2, characterized in that: The heat dissipation component includes a plurality of heat dissipation fins (14) respectively fixed on the right side and bottom of the sample storage box (6); an air cooler (12) is fixedly installed on the bottom of the rectangular box (3); the right side of the air cooler (12) is an air outlet and is connected and fixed with an L-shaped tube (11); the top of the L-shaped tube (11) is set as a blocking structure; the inner right side and the inner bottom of the L-shaped tube (11) are connected and fixed with a plurality of air blowing hoods (13); the air blowing hoods (13) are adapted to the corresponding heat dissipation fins (14); the left side of the air cooler (12) is an air inlet and is fixed with a filter; the air cooler (12) is electrically connected to the PLC controller (8).

4. A thermal power plant boiler water vapor sampling device according to claim 1, characterized in that: Four supporting rods are fixedly connected between the top of the sample storage box (6) and the bottom of the fixing seat (2) in a rectangular shape, and the material of the sample storage box (6) is copper.

5. The water vapor sampling device for a thermal power plant boiler according to claim 2, characterized in that: A rectangular through-hole is provided on the front side of the rectangular box (3), and the inner wall of the rectangular through-hole is in movable contact with the outer side of the filter plate (4).

6. The thermal power plant boiler water vapor sampling device according to claim 2, characterized in that: A sealing rubber pad is bonded and fixed to the rear side of the baffle (16), and the rear side of the sealing rubber pad is in movable contact with the front side of the rectangular box (3).

7. The water vapor sampling device for a thermal power plant boiler according to claim 3, characterized in that: The drain valve (7) is located at the rear side of the L-shaped tube (11).

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