Steam-water sampling device capable of guaranteeing full-time monitoring of steam-water conductivity of boiler

Abstract

The utility model provides a steam-water sampling device capable of guaranteeing all-time monitoring of steam-water conductivity of a boiler, and belongs to the technical field of steam-water sampling devices. The steam-water sampling device comprises a main sampling tank and a sampling control mechanism, an auxiliary sampling tank is mounted on the right side of the main sampling tank, a controller is mounted on the left side of the auxiliary sampling tank, washing discharge valves electrically connected with the controller are mounted at the bottoms of the left sides of the main sampling tank and the auxiliary sampling tank, and the washing discharge valves are electrically connected with the controller. The inlet valves are mounted at the tops of the main sampling tank and the auxiliary sampling tank, and by arranging the sampling control mechanism, the working states of the main sampling tank and the auxiliary sampling tank can be regulated and controlled through a controller program of the controller when the main sampling tank and the auxiliary sampling tank work, so that exchange sampling is realized, and the sampling continuity is ensured; the condition that the main sampling tank and the auxiliary sampling tank are difficult to exchange and sample during working is avoided, so that the working continuity of the main sampling tank and the auxiliary sampling tank is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of steam-water sampling devices, and more specifically, to a steam-water sampling device that can ensure full-time monitoring of the conductivity of boiler steam and water. Background Art

[0002] During the operation of a power plant, steam-water sampling and detection is a crucial task for monitoring the quality of the steam-water system in the power plant and ensuring the safe and stable operation of the power plant. During the steam-water sampling process, a steam-water sampling device is used. A steam-water sampling device is a device for sampling steam and water from a boiler system. It is connected to the corresponding position in the boiler system through pipelines to obtain steam and water samples regularly or continuously for analysis. The sampled steam and water samples are usually used to measure water quality parameters such as conductivity, pH value, dissolved oxygen, etc., and to detect possible pollutants and impurities. However, for traditional steam-water sampling and detection devices, each time the resin is replaced, the equipment needs to be isolated, resulting in a temporary interruption of data detection. At the same time, because the new resin is just put into use, it requires a long time of flushing, resulting in inaccurate data and affecting the real-time monitoring effect of the power plant. Summary of the Utility Model

[0003] To make up for the above deficiencies, the utility model provides a steam-water sampling device that can ensure full-time monitoring of the conductivity of boiler steam and water, which overcomes the above technical problems or at least partially solves the above problems.

[0004] The utility model is implemented as follows:

[0005] The utility model provides a steam-water sampling device that can ensure full-time monitoring of the conductivity of boiler steam and water, including a main sampling tank. A secondary sampling tank is installed on the right side of the main sampling tank. A controller is installed on the left side of the secondary sampling tank. Positive flushing discharge valves electrically connected to the controller are installed at the bottoms of the left sides of the main sampling tank and the secondary sampling tank.

[0006] Sampling control mechanism; the sampling control mechanism includes;

[0007] Inlet valve; the inlet valve is installed on the tops of the main sampling tank and the secondary sampling tank. Outlet valves are installed at the bottoms of the main sampling tank and the secondary sampling tank. The inlet valve and the outlet valve are both electrically connected to the controller through wires.

[0008] Mounting plate; the mounting plate is movably connected inside the main sampling tank and the secondary sampling tank. An adsorption pad is installed inside the mounting plate.

[0009] Light sensor; the light sensor is fixedly connected to the front side of the inner walls of the main sampling tank and the secondary sampling tank. The light sensor is located on top of the mounting plate. The light sensor is electrically connected to the controller through a wire.

[0010] Support and stabilization mechanism; the support and stabilization mechanism is fixedly connected to the inner walls of the main sampling tank and the secondary sampling tank.

[0011] In a preferred embodiment, the support and stabilization mechanism includes a support frame, a stabilization port, a stabilization bracket, and a magnetic strip. The support frame is fixedly connected to the inner walls of the main sampling tank and the secondary sampling tank. The top of the support frame contacts the bottom of the mounting plate. The stabilization port is opened at the rear side of the mounting plate. The stabilization bracket is movably connected inside the stabilization port. The bottom of the stabilization bracket is fixedly connected to the top of the support frame. The magnetic strip is inlaid on the front side of the inner wall of the stabilization port and is magnetically connected to the stabilization bracket.

[0012] In a preferred embodiment, a hexagonal bracket is fixedly connected to the bottom of the inner wall of the mounting plate. A fitting hole is opened at the top of the hexagonal bracket. Adsorption columns are fixedly connected to both the top and the bottom of the adsorption pad, and the outer sides of the adsorption columns are located inside the fitting hole.

[0013] In a preferred embodiment, replacement openings are opened at the bottoms of the front sides of the main sampling tank and the secondary sampling tank. A replacement plate is movably connected inside the replacement openings. Closing rings are sleeved on the surfaces of the main sampling tank and the secondary sampling tank outside the replacement openings. A rubber pad located outside the replacement plate is fixedly connected to the front side of the inner wall of the closing ring, and the rear side of the rubber pad fits against the front side of the replacement opening.

[0014] In a preferred embodiment, limit rings are fixedly connected to both the top and the bottom of the surfaces of the main sampling tank and the secondary sampling tank outside the closing ring. A limit opening is opened at the rear side of the closing ring. A limit rod is movably connected inside the limit opening, and the outer side of the limit rod is fixedly connected to the inner side of the limit ring.

[0015] In a preferred embodiment, a positioning strip is movably connected to the front side of the closing ring. Positioning columns are fixedly connected to both the top and the bottom of the rear side of the positioning strip. A positioning groove is opened at the front side of the limit ring, and the rear sides of the positioning columns are located inside the positioning groove.

[0016] In a preferred embodiment, connecting sleeves are fixedly connected to both the top and the bottom of the front side of the closing ring, and both sides of the positioning strip penetrate to the outside of the connecting sleeves.

[0017] In a preferred embodiment, a spring is arranged inside the connecting sleeve. One end of the spring is fixedly connected to the inner wall of the connecting sleeve, and the other end of the spring is fixedly connected to the surface of the positioning strip.

[0018] A steam-water sampling device provided by the present utility model that can ensure all-time monitoring of the conductivity of boiler steam and water has the following beneficial effects:

[0019] 1. By setting up a sampling control mechanism, when the main sampling tank and the secondary sampling tank are working, it is convenient for the staff to adjust the working states of the main sampling tank and the secondary sampling tank according to the actual situation through the controller program of the controller, realizing the exchange of sampling to ensure the continuity of sampling, and monitoring the sampling conditions inside the main sampling tank and the secondary sampling tank through a light sensor cooperating with an adsorption pad, avoiding the situation that it is difficult to carry out the exchange of sampling when the main sampling tank and the secondary sampling tank are working. Therefore, the working continuity of the main sampling tank and the secondary sampling tank is improved.

[0020] 2. By setting up a support and stability mechanism, when the mounting plate cooperates with the adsorption pad to work, it can support and stabilize the mounting plate, avoiding the situation that the mounting plate sags or its position shifts due to its own gravity during use. Therefore, the working stability of the mounting plate is improved.

[0021] 3. By setting up a hexagonal frame, fitting holes and adsorption columns, when the mounting plate cooperates with the adsorption pad to work, it can carry out multi-directional plug-in stability work between the mounting plate and the adsorption pad, avoiding the situation that the position of the adsorption pad shifts during work. Therefore, the working stability of the adsorption pad is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0023] Figure 1 is the overall three-dimensional view provided by the embodiment of the present invention;

[0024] Figure 2 is the three-dimensional sectional structure schematic diagram of the main sampling tank provided by the embodiment of the present invention;

[0025] Figure 3 is the three-dimensional sectional structure schematic diagram of the mounting plate provided by the embodiment of the present invention;

[0026] Figure 4 is the three-dimensional sectional structure schematic diagram of the closing ring provided by the embodiment of the present invention;

[0027] In the figure: 1, main sampling tank; 2, secondary sampling tank; 3, controller; 4, normal flushing discharge valve; 5, inlet valve; 6, outlet valve; 7, mounting plate; 8, adsorption pad; 9, light sensor; 10, support frame; 11, stabilizing port; 12, stabilizing frame; 13, magnetic strip; 14, hexagonal frame; 15, fitting hole; 16, adsorption column; 17, replacement port; 18, replacement plate; 19, closing ring; 20, rubber pad; 21, limiting ring; 22, limiting port; 23, limiting rod; 24, positioning strip; 25, positioning column; 26, positioning groove; 27, connecting sleeve; 28, spring. Detailed implementation mode

[0028] To make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0029] Refer to Figures 1 - 4 , the present utility model provides a technical solution: a steam-water sampling device that can ensure the full-time monitoring of the conductivity of boiler steam and water, including a main sampling tank 1 and a sampling control mechanism. A secondary sampling tank 2 is installed on the right side of the main sampling tank 1, and a controller 3 is installed on the left side of the secondary sampling tank 2. Normal flushing discharge valves 4 electrically connected to the controller 3 are installed at the bottoms of the left sides of the main sampling tank 1 and the secondary sampling tank 2, which can facilitate the staff to adjust the working states of the main sampling tank 1 and the secondary sampling tank 2 according to the actual situation through the controller 3 program of the controller 3 when the main sampling tank 1 and the secondary sampling tank 2 are working, realize the exchange of sampling to ensure the continuity of sampling, and monitor the sampling conditions inside the main sampling tank 1 and the secondary sampling tank 2 through the cooperation of the light sensor 9 and the adsorption pad 8, avoiding the situation that it is difficult to carry out the exchange of sampling when the main sampling tank 1 and the secondary sampling tank 2 are working, so the working continuity of the main sampling tank 1 and the secondary sampling tank 2 is improved.

[0030] Refer to Figures 1 - 4, in a preferred embodiment, the sampling control mechanism includes an inlet valve 5, which is installed at the top of the main sampling tank 1 and the secondary sampling tank 2. Outlet valves 6 are installed at the bottoms of the main sampling tank 1 and the secondary sampling tank 2. Both the inlet valve 5 and the outlet valve 6 are electrically connected to the controller 3 through wires. The mounting plate 7 is movably connected inside the main sampling tank 1 and the secondary sampling tank 2. An adsorption pad 8 is installed inside the mounting plate 7. The light sensor 9 is fixedly connected to the front side of the inner walls of the main sampling tank 1 and the secondary sampling tank 2. The light sensor 9 is located on top of the mounting plate 7 and is electrically connected to the controller 3 through a wire. The support and stability mechanism is fixedly connected to the inner walls of the main sampling tank 1 and the secondary sampling tank 2. When the main sampling tank 1 and the secondary sampling tank 2 are in use, first connect the main sampling tank 1 and the secondary sampling tank 2 to the corresponding positions in the external boiler system through the inlet valve 5. It should be noted that a tee pipe should be used for connection to prepare for subsequent flushing of the adsorption pad 8, and install the adsorption pad 8 through the mounting plate 7. And adjust the flushing time of the adsorption pad 8 through the controller 3 according to the actual situation. When the main sampling tank 1 samples the steam-water in the external boiler system through the inlet valve 5 in cooperation with the adsorption pad 8, the light sensor 9 monitors the working condition of the adsorption pad 8 in real time. When it is detected that the adsorption pad 8 needs to be replaced, a signal is sent to the controller 3. After receiving the signal, the controller 3 closes the inlet valve 5 of the main sampling tank 1 and starts the inlet valve 5 of the secondary sampling tank 2, so that the secondary sampling tank 2 continues to sample in cooperation with the adsorption pad 8. At the same time, the electrical signal transmitted by the light sensor 9 is converted into a sound signal to remind the user to take out and replace the adsorption pad 8 inside the main sampling tank 1, ensuring the connectivity of the steam-water sampling in the external boiler system. The support and stability mechanism includes a support frame 10, a stabilizing port 11, a stabilizing frame 12, and a magnetic strip 13. The support frame 10 is fixedly connected to the inner walls of the main sampling tank 1 and the secondary sampling tank 2. The top of the support frame 10 contacts the bottom of the mounting plate 7. The stabilizing port 11 is opened at the rear side of the mounting plate 7. The stabilizing frame 12 is movably connected inside the stabilizing port 11. The bottom of the stabilizing frame 12 is fixedly connected to the top of the support frame 10. The magnetic strip 13 is inlaid on the front side of the inner wall of the stabilizing port 11 and is magnetically connected to the stabilizing frame 12, which can support and stabilize the mounting plate 7 when the mounting plate 7 works in cooperation with the adsorption pad 8, avoiding the situation of the mounting plate 7 sagging or shifting in position due to its own gravity during use, thus improving the working stability of the mounting plate 7.

[0031] Refer to Figures 2 - 4, in a preferred embodiment, a hexagonal frame 14 is fixedly connected to the bottom of the inner wall of the mounting plate 7. A fitting hole 15 is formed at the top of the hexagonal frame 14. Adsorption columns 16 are fixedly connected to both the top and bottom of the adsorption pad 8. The outer side of the adsorption column 16 is located inside the fitting hole 15. When the mounting plate 7 cooperates with the adsorption pad 8, multi-directional plug-in stability work can be carried out between the mounting plate 7 and the adsorption pad 8, avoiding the situation of position deviation of the adsorption pad 8 during work. Therefore, the working stability of the adsorption pad 8 is improved. Replacement openings 17 are formed at the bottom of the front sides of both the main sampling tank 1 and the secondary sampling tank 2. A replacement plate 18 is movably connected inside the replacement opening 17. Closing rings 19 are sleeved on the surfaces of both the main sampling tank 1 and the secondary sampling tank 2 and are located outside the replacement opening 17. A rubber pad 20 located outside the replacement plate 18 is fixedly connected to the front side of the inner wall of the closing ring 19. The rear side of the rubber pad 20 is in contact with the front side of the replacement opening 17. When the mounting plate 7 cooperates with the adsorption pad 8, it can provide space for the user to take the mounting plate 7 to replace the adsorption pad 8 and carry out closing and sealing work on the replacement space after the adsorption pad 8 is replaced, avoiding the situation that it is difficult to take out the mounting plate 7 during the use of the mounting plate 7, resulting in difficulty in replacing the adsorption pad 8. Therefore, the replacement convenience of the adsorption pad 8 is improved.

[0032] Refer to Figure 4 , in a preferred embodiment, limit rings 21 located outside the closing ring 19 are fixedly connected to both the top and bottom of the surfaces of the main sampling tank 1 and the secondary sampling tank 2. A limit opening 22 is formed at the rear side of the closing ring 19. A limit rod 23 is movably connected inside the limit opening 22. The outer side of the limit rod 23 is fixedly connected to the inner side of the limit ring 21. When the closing ring 19 and the rubber pad 20 cooperate with the replacement opening 17, it can limit the movement range and guide the movement track of the closing ring 19, avoiding the situation of excessive position movement of the closing ring 19 or driving the rubber pad 20 to shift during work. Therefore, the working stability of the closing ring 19 is improved. A positioning strip 24 is movably connected to the front side of the closing ring 19. Positioning columns 25 are fixedly connected to both the top and bottom of the rear side of the positioning strip 24. A positioning groove 26 is formed at the front side of the limit ring 21. The rear side of the positioning column 25 is located inside the positioning groove 26. When the limit ring 21 cooperates with the closing ring 19, it can provide a medium for the user to position between the closing ring 19 and the limit ring 21, avoiding the situation that it is difficult to position and stabilize the closing ring 19 during use. Therefore, the positioning convenience of the closing ring 19 is improved.

[0033] Refer to Figure 4, in a preferred embodiment, connection sleeves 27 are fixedly connected to both the top and bottom on the front side of the closed loop 19. Both sides of the positioning strip 24 penetrate to the outside of the connection sleeve 27, so that when the positioning strip 24 works in cooperation with the closed loop 19 through the positioning post 25, a sliding connection can be carried out between the positioning strip 24 and the closed loop 19, avoiding the separation of the positioning strip 24 from the closed loop 19 during use. Therefore, the connection effect between the positioning strip 24 and the closed loop 19 is improved. A spring 28 is arranged inside the connection sleeve 27. One end of the spring 28 is fixedly connected to the inner wall of the connection sleeve 27, and the other end of the spring 28 is fixedly connected to the surface of the positioning strip 24. When the connection sleeve 27 works in cooperation with the positioning strip 24, an elastic thrust can be applied to the positioning strip 24 through the connection strip, avoiding the situation that the positioning post 25 is disengaged from the positioning groove 26 due to the forward and backward movement of the positioning strip 24 during work. Therefore, the working stability of the positioning strip 24 is improved.

[0034] Specifically, the working process or working principle of the steam-water sampling device that can ensure the full-time monitoring of the steam-water conductivity of the boiler is as follows: when in use, the main sampling tank 1 and the auxiliary sampling tank 2 are connected to the corresponding positions in the external boiler system through the inlet valve 5 when used for the first time. It should be noted that the connection should be made through a three-way pipe to prepare for the subsequent flushing of the adsorption pad 8, and then the positive wash discharge valve 4 and the outlet valve 6 are connected to the corresponding external pipeline system. Subsequently, the adsorption pad 8 is first held by hand to drive the adsorption column 16 to be installed into the inside of the installation disk 7, and the adsorption column 16 moved by the adsorption pad 8 is located inside the fitting hole 15. At this time, the hexagonal frame 14 cooperates with the fitting hole 15 to perform the plug-in and stabilization work between the adsorption pad 8 and the installation disk 7, and then the installation disk 7 is held by hand through the replacement port 17 to replace the installation disk with the adsorption pad 8. 7 are respectively installed inside the main sampling tank 1 and the auxiliary sampling tank 2. At this time, the support frame 10 supports the installation disk 7. At the same time, the stabilizing frame 12 enters the stabilizing port 11 and fits with the magnetic strip 13, limits the lifting trajectory of the installation disk 7 and performs magnetic attraction positioning on the installation disk 7 after lifting. Subsequently, the handheld replacement plate 18 is placed inside the replacement port 17, and the handheld positioning strip 24 drives the positioning column 25 to move forward to the positioning groove 26 at the top of the closed ring 19 to disengage the position. At this time, the spring 28 is affected by the forward movement force of the positioning strip 24 to shrink, preparing for the subsequent pushing of the positioning strip 24, and moving the closed ring 19 downward to drive the rubber pad 20 to move to the outside of the replacement port 17, and performing closed sealing work between the replacement port 17 and the replacement plate 18. At this time, The limiting ring 21 limits the downward movement range of the closed ring 19. At the same time, the limiting rod 23 moves inside the limiting opening 22 to guide the downward movement trajectory of the closed ring 19 to prevent deviation. Then the positioning strip 24 is slowly released. The contracted spring 28 applies a backward thrust to the positioning column 25 through the positioning strip 24, so that the positioning column 25 enters the positioning groove 26 at the bottom of the closed ring 19, and the closed ring 19 and the limiting ring 21 are plugged in and positioned. Then, the flushing time of the adsorption pad 8 is adjusted by the controller 3 according to actual conditions, and the threshold value of the light sensor 9 for identifying the color of the adsorption pad 8 is adjusted. Since the adsorption pad 8 and the adsorption column 16 are both made of resin, color changes will occur during the adsorption process. When the main sampling tank 1 passes through the inlet valve When the light sensor 9 cooperates with the adsorption pad 8 to sample the steam and water in the external boiler system, the light sensor 9 monitors the working condition of the adsorption pad 8 in real time. When the light sensor 9 detects that the color of the adsorption pad 8 is consistent with the color trigger threshold value adjusted in advance, the signal is transmitted to the controller 3. After receiving the signal, the controller 3 closes the inlet valve 5 of the main sampling tank 1 and starts the inlet valve 5 of the auxiliary sampling tank 2, so that the auxiliary sampling tank 2 cooperates with the adsorption pad 8 to continue sampling. At the same time, the electrical signal transmitted by the light sensor 9 is converted into a sound signal to remind the user to take out and replace the adsorption pad 8 inside the main sampling tank 1 to ensure the connectivity of the steam and water sampling in the external boiler system. After the adsorption pad 8 is replaced, the positive wash discharge valve 4 of the main sampling tank 1 is opened through the controller 3.Open the inlet valve 5 of the main sampling tank 1 and conduct a flushing operation on the replaced adsorption pad 8. After the measured data of the water sample at the resin outlet is normal and qualified, close the normal flushing discharge valve 4 and the inlet valve 5 of the main sampling tank 1 to prepare for subsequent continuous sampling by replacing the auxiliary sampling tank 2.,

[0035] It should be noted that the controller 3, the normal flushing discharge valve 4, the inlet valve 5, the outlet valve 6, and the light sensor 9 are all devices or equipment existing in the prior art, or devices or equipment that can be realized by the prior art. Their power supply, specific composition, and principle are clear to those skilled in the art, so they will not be elaborated in detail here.

Claims

1. A steam-water sampling device capable of ensuring full-time monitoring of boiler steam-water conductivity, comprising a main sampling tank (1), a secondary sampling tank (2) installed on the right side of the main sampling tank (1), a controller (3) installed on the left side of the secondary sampling tank (2), and a positive wash discharge valve (4) electrically connected to the controller (3) installed at the bottom of the left side of the main sampling tank (1) and the secondary sampling tank (2), characterized in that ； Sampling control mechanism; the sampling control mechanism comprises: An inlet valve (5); the inlet valve (5) is installed on the top of the main sampling tank (1) and the auxiliary sampling tank (2); an outlet valve (6) is installed on the bottom of the main sampling tank (1) and the auxiliary sampling tank (2); the inlet valve (5) and the outlet valve (6) are both electrically connected to the controller (3) through a wire; A mounting plate (7); the mounting plate (7) is movably connected to the inside of the main sampling tank (1) and the auxiliary sampling tank (2), and an adsorption pad (8) is installed inside the mounting plate (7); A light sensor (9); the light sensor (9) is fixedly connected to the front side of the inner wall of the main sampling tank (1) and the auxiliary sampling tank (2); the light sensor (9) is located on the top of the mounting plate (7); the light sensor (9) is electrically connected to the controller (3) via a wire; Support and stabilization mechanism; the support and stabilization mechanism is fixedly connected to the inner walls of the main sampling tank (1) and the auxiliary sampling tank (2).

2. A steam-water sampling device capable of ensuring full-time monitoring of boiler steam-water conductivity according to claim 1, characterized in that: The supporting and stabilizing mechanism comprises a supporting frame (10), a stabilizing port (11), a stabilizing frame (12) and a magnetic strip (13); the supporting frame (10) is fixedly connected to the inner walls of the main sampling tank (1) and the auxiliary sampling tank (2); the top of the supporting frame (10) contacts the bottom of the mounting plate (7); the stabilizing port (11) is opened on the rear side of the mounting plate (7); the stabilizing frame (12) is movably connected to the inside of the stabilizing port (11); the bottom of the stabilizing frame (12) is fixedly connected to the top of the supporting frame (10); the magnetic strip (13) is embedded and connected to the front side of the inner wall of the stabilizing port (11); and the magnetic strip (13) is magnetically connected to the stabilizing frame (12).

3. The steam-water sampling device capable of ensuring full-time monitoring of boiler steam-water conductivity according to claim 1 is characterized in that: A hexagonal frame (14) is fixedly connected to the bottom of the inner wall of the mounting plate (7), a fitting hole (15) is provided at the top of the hexagonal frame (14), and adsorption columns (16) are fixedly connected to the top and bottom of the adsorption pad (8), and the outer side of the adsorption column (16) is located inside the fitting hole (15).

4. The steam-water sampling device capable of ensuring full-time monitoring of boiler steam-water conductivity according to claim 1 is characterized in that: The bottom of the front side of the main sampling tank (1) and the auxiliary sampling tank (2) are both provided with a replacement port (17), the interior of the replacement port (17) is movably connected with a replacement plate (18), the surfaces of the main sampling tank (1) and the auxiliary sampling tank (2) are both sleeved with a closed ring (19) located outside the replacement port (17), the front side of the inner wall of the closed ring (19) is fixedly connected with a rubber pad (20) located outside the replacement plate (18), and the rear side of the rubber pad (20) is in contact with the front side of the replacement port (17).

5. A steam-water sampling device capable of ensuring full-time monitoring of boiler steam-water conductivity according to claim 4, characterized in that: The top and bottom of the surface of the main sampling tank (1) and the auxiliary sampling tank (2) are fixedly connected with a limiting ring (21) located outside the closed ring (19); a limiting opening (22) is provided on the rear side of the closed ring (19); a limiting rod (23) is movably connected inside the limiting opening (22); and the outer side of the limiting rod (23) is fixedly connected to the inner side of the limiting ring (21).

6. The steam-water sampling device capable of ensuring full-time monitoring of boiler steam-water conductivity according to claim 5 is characterized in that: The front side of the closed ring (19) is movably connected to a positioning strip (24), the top and bottom of the rear side of the positioning strip (24) are fixedly connected to positioning posts (25), the front side of the limiting ring (21) is provided with a positioning groove (26), and the rear side of the positioning post (25) is located inside the positioning groove (26).

7. A steam-water sampling device capable of ensuring full-time monitoring of boiler steam-water conductivity according to claim 6, characterized in that: The top and bottom of the front side of the closed ring (19) are fixedly connected to a connecting sleeve (27), and both sides of the positioning strip (24) penetrate to the outside of the connecting sleeve (27).

8. The steam-water sampling device capable of ensuring full-time monitoring of boiler steam-water conductivity according to claim 7 is characterized in that: A spring (28) is arranged inside the connecting sleeve (27), one end of the spring (28) is fixedly connected to the inner wall of the connecting sleeve (27), and the other end of the spring (28) is fixedly connected to the surface of the positioning strip (24).

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