Automatic sampling and flushing system for fine treatment of thermal power plant

Abstract

The invention relates to the technical field of sampling and flushing systems, and discloses an automatic sampling and flushing system for fine treatment of a thermal power plant, the automatic sampling and flushing system comprises an operation panel module, a control module, an electromagnetic valve and a sampling pipe, the operation panel module is connected with the control module, the control module is connected with the electromagnetic valve, and the electromagnetic valve is connected with the sampling pipe; the operation panel module is used for providing a visual operation interface, so that an operator can control through a touch screen; the control module is used for operating instructions of the operation panel module according to preset logic; the on-off state and time of the electromagnetic valve can be preset through the automatic control unit, sampling and washing are automatically completed, frequent manual operation of operators is not needed, the working efficiency is improved, the labor cost is reduced, a sampling pipe is automatically and regularly washed, water sample impurities can be effectively prevented from polluting an online instrument sampling probe, accurate measurement of an online instrument is ensured, and monitoring distortion is prevented. And stable operation and precise control of a precise treatment system are facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of sampling and flushing systems, in particular to an automatic sampling and flushing system for fine processing in a thermal power plant. Background Art

[0002] A thermal power plant, also known as a thermal power plant, uses combustible materials (such as coal) as fuel to produce electricity. The basic production process is as follows: The combustion of the fuel heats water to generate steam, converting the fuel's chemical energy into thermal energy. The steam pressure then drives a turbine, converting the thermal energy into mechanical energy. The turbine then drives a generator, converting the mechanical energy into electrical energy.

[0003] The existing manual sampling device for fine treatment concentrates the sampling tubes on the sampling device according to the different water samples to be sampled, so that the operator can extract different water samples. Each water sampling tube has a manual shut-off valve, but the operator can only take samples at the specified sampling time; the system is unattended at other times. Therefore, if each sampling shut-off valve is closed after sampling, the sampling tube will not be flushed for a long time, causing impurities to accumulate in the water sample, affecting the manual sampling measurement results. In severe cases, the sampling tube will be blocked, causing contamination of the online instrument sampling probe and shortening the service life of the online sampling probe. At the same time, if the water sample is allowed to flow 24 hours a day, it will cause great waste because the water sample is chemically processed. For this reason, an automatic sampling and flushing system for fine treatment of thermal power plants is proposed. Summary of the Invention

[0004] The object of the present invention is to provide an automatic sampling and flushing system for fine treatment of thermal power plants, so as to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: an automatic sampling and flushing system for fine treatment of thermal power plants, comprising an operation panel module, a control module, a solenoid valve and a sampling tube, wherein the operation panel module is connected to the control module, the control module is connected to the solenoid valve, and the solenoid valve is connected to the sampling tube; The operation panel module is used to provide a visual operation interface so that operators can control it through the touch screen; The control module is used to execute the instructions of the operation panel module according to a predetermined logic; The solenoid valve is used to control the water sampling and flushing of the sampling tube according to the instructions of the control module; The sampling tube is used to be connected to the water outlet of the solenoid valve to take samples from the fine treatment system of the thermal power plant.

[0006] Preferably, the operation panel module includes an automatic control unit, a manual control unit and a one-button control unit; The automatic control unit is used to preset the switch status of each solenoid valve to achieve automatic sampling and flushing functions; The manual control unit is used for the operator to select the manual mode through the touch screen to independently control the switch state of each solenoid valve; The one-button control unit is used to switch all solenoid valves on and off with one button according to operating requirements, thereby realizing rapid start or stop of the system.

[0007] Preferably, the automatic control unit comprises an automatic sampling mechanism, an automatic flushing mechanism and a timing mechanism; The automatic sampling mechanism is used to preset the switch status of each solenoid valve to realize the automatic sampling operation of the sampling tube; The automatic flushing mechanism is used to preset the switch state of each solenoid valve to realize the operation of flushing the sampling tube; The timing mechanism is used to preset the opening and closing time of each solenoid valve.

[0008] Preferably, each group of the timing mechanisms can be set to at least three groups of opening and closing times.

[0009] Preferably, the manual control unit comprises a manual sampling mechanism and a manual flushing mechanism; The manual sampling mechanism is used for the operator to individually select and control the sampling solenoid valve in manual mode to perform sampling operations; The manual flushing mechanism is used for the operator to individually select and control the solenoid valve for flushing in manual mode to perform flushing operations.

[0010] Preferably, the above-mentioned: a placement platform is provided at the lower side of the sampling tube, and a clamping assembly is provided at the top of the placement platform; The clamping assembly includes a plurality of first clamping plates, a second clamping plate and a rotating shaft. A gear is fixedly sleeved on the outer side of the rotating shaft. Support rods are fixed on the bottoms of the first clamping plate and the second clamping plate.

[0011] Preferably, the bottoms of the two support rods are respectively fixed with a first slide rod and a second slide rod, a slide groove is provided inside the placement table, and the outer sides of the first slide rod and the second slide rod are slidably connected to the inner sides of the slide groove.

[0012] Preferably, the first slide bar has a plurality of first teeth integrally formed on one side, and the second slide bar has a plurality of second teeth integrally formed on one side, and one side of the first teeth and the second teeth are engaged with the outer side of the gear.

[0013] Preferably, the outer side of the rotating shaft is sleeved with a torsion spring, and two ends of the torsion spring are respectively connected to one side of the rotating shaft and the sliding slot.

[0014] Preferably, the above-mentioned: the outer side of the rotating shaft is rotatably connected to the inner side of the slide groove, a handle is fixed to one end of the first slide rod, a plurality of guide grooves are opened on the top of the placement table, and the outer side of the support rod is slidably connected to the inner side of the guide groove.

[0015] Compared with the prior art, the present invention adopts the above technical solution and has the following technical effects: 1. The automatic control unit can preset the solenoid valve switch status and time, automatically complete sampling and flushing, and operators do not need frequent manual operations, which improves work efficiency and reduces labor costs. The automatic timing flushing of the sampling tube can effectively prevent water sample impurities from contaminating the online instrument sampling probe, ensure the accuracy of online instrument measurement, prevent monitoring distortion, and facilitate stable operation and precise control of the fine treatment system.

[0016] 2. The manual control unit allows the operator to manually and independently control each solenoid valve through the touch screen under special circumstances to perform sampling or flushing operations; the one-button control unit can quickly start or stop the system to meet different operating requirements, increase the flexibility and convenience of system operation, and the system rationally controls the sampling and flushing process to avoid unnecessary loss of water samples, improve the utilization rate of water samples, reduce production costs, and have good economic and environmental benefits.

[0017] 3. By pulling the handle to drive the movement of related parts, the first clamping plate and the second clamping plate can be separated. After putting in the sampling cup, the handle is released. Under the action of the torsion spring, the first clamping plate and the second clamping plate can automatically clamp and fix the sampling cup. The whole process is simple and convenient to operate, and does not require complicated operating procedures and professional skills, which reduces the difficulty and threshold of sampling. The torsion force of the torsion spring is used to clamp the sampling cup, which can provide a stable clamping force to ensure that the sampling cup remains fixed during the sampling process and is not easy to shake or tip over, thereby ensuring the accuracy and reliability of sampling, and avoiding the problem of water sample spilling or inaccurate sampling volume due to loose fixation of the sampling cup. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0019] Figure 1 is a system flow chart of the present invention; Figure 2 This is a flow chart of the operation panel module of the present invention; Figure 3 This is a flow chart of the automatic control unit of the present invention; Figure 4 This is a flow chart of the manual control unit of the present invention; Figure 5 This is a structural diagram of the placement platform of the present invention; Figure 6 This is a structural schematic diagram of the first splint of the present invention; Figure 7 This is a structural diagram of the guide groove of the present invention; Figure 8 It is a schematic diagram of the gear structure of the present invention; Figure 9 It is a structural schematic diagram of the torsion spring of the present invention; Figure 10 It is a schematic diagram of the splint position structure of the present invention.

[0020] Explanation of the accompanying drawings: 1. Placement table; 2. Clamping assembly; 21. First clamping plate; 22. Guide groove; 23. Handle; 24. First slide bar; 25. Second clamping plate; 26. Support rod; 27. Second slide bar; 28. Rotating shaft; 29. ​​Torsion spring; 210. Gear; 211. First tooth; 212. Second tooth. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments 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.

[0022] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the efficacy and purpose that can be achieved by this application. Example 1

[0023] See also Figure 1-4 The present invention provides a technical solution: an automatic sampling and flushing system for fine treatment of thermal power plants, comprising an operation panel module, a control module, a solenoid valve and a sampling tube, wherein the operation panel module is connected to the control module, the control module is connected to the solenoid valve, the solenoid valve is connected to the sampling tube, and the number of the solenoid valve and the sampling tube is multiple; The operation panel module is used to provide a visual operation interface so that the operator can control it through the touch screen; the operation panel module is equipped with a touch screen to provide a visual operation interface; The operation panel module includes an automatic control unit, a manual control unit and a one-button control unit; Automatic control unit, used to preset the switch status of each solenoid valve to realize automatic sampling and flushing functions; The automatic control unit includes an automatic sampling mechanism, an automatic flushing mechanism and a timing mechanism; Automatic sampling mechanism, used to preset the switch status of each solenoid valve to realize the automatic sampling operation of the sampling tube; Automatic flushing mechanism, used to preset the switch status of each solenoid valve to realize the operation of flushing the sampling tube; The timing mechanism is used to preset the opening and closing times of each solenoid valve. Each timing mechanism can be set to at least three sets of opening and closing times. The flushing time or cycle of each shift can also be set individually according to the needs of flushing the sampling tube.

[0024] Manual control unit, for operators to select manual mode through the touch screen to independently control the switch status of each solenoid valve. Operators can intuitively select and control single or multiple solenoid valves; The manual control unit includes a manual sampling mechanism and a manual flushing mechanism; Manual sampling mechanism, used for operators to individually select and control the sampling solenoid valve in manual mode to perform sampling operations; The manual flushing mechanism is used for the operator to individually select and control the solenoid valve for flushing in manual mode to perform flushing operations.

[0025] The one-button control unit is used to switch all solenoid valves on and off with one button according to operating requirements, enabling rapid start or stop of the system and ensuring that the power supply to all solenoid valves can be quickly cut off in an emergency.

[0026] The control module is used to execute the instructions of the operation panel module according to the predetermined logic; Solenoid valve, used to control water sampling and flushing of the sampling tube according to the instructions of the control module; The sampling tube is used to connect to the water outlet of the solenoid valve to take samples from the fine treatment system of the thermal power plant. Example 2

[0027] See also Figure 5-10 , this embodiment differs from the first embodiment in that: A placement platform 1 is provided at the lower side of the sampling tube, and a clamping assembly 2 is provided on the top of the placement platform 1; In order to facilitate the clamping and positioning of the sampling cup, a clamping assembly 2 is provided, which includes a first clamping plate 21, a second clamping plate 25 and a rotating shaft 28. A gear 210 is fixedly sleeved on the outer side of the rotating shaft 28. Support rods 26 are fixed to the bottom of the first clamping plate 21 and the second clamping plate 25. The bottom of the two support rods 26 are respectively fixed with a first slide rod 24 and a second slide rod 27. A slide groove is provided inside the placement table 1. The outer sides of the first slide rod 24 and the second slide rod 27 are slidably connected to the inner side of the slide groove. The two support rods 26 slide away from each other on the inner side of the guide groove 22, so that the first clamping plate 21 and the second clamping plate 25 are separated from each other, and the sampling cup is placed between the first clamping plate 21 and the second clamping plate 25 on the top of the placement table 1.

[0028] A plurality of first teeth 211 are integrally formed on one side of the first slide bar 24, and a plurality of second teeth 212 are integrally formed on one side of the second slide bar 27. One side of the first teeth 211 and the second teeth 212 are meshed with the outer side of the gear 210. A torsion spring 29 is sleeved on the outer side of the rotating shaft 28. When the handle 23 is pulled, the handle 23 drives the first slide bar 24 to slide on the inner side of the slide groove, so that the first teeth 211 are meshed with the gear 210. When the gear 210 rotates, the gear 210 is meshed with the second teeth 212, so that the torsion spring 29 generates torsion. The two ends of the torsion spring 29 are respectively connected to the rotating shaft 28 and one side of the slide groove. The outer side of the rotating shaft 28 is rotatably connected to the inner side of the slide groove. A handle 23 is fixed to one end of the first slide bar 24. A plurality of guide grooves 22 are opened on the top of the placing table 1, and the outer side of the support rod 26 is slidably connected to the inner side of the guide groove 22.

[0029] When the first and second clamping plates 21 and 25 are close to each other, the first and second clamping plates 21 and 25 are in the original position. The user only needs to pull the handle 23, and the handle 23 drives the first slide bar 24 to slide inside the slide groove, so that the first tooth 211 is meshed with the gear 210. When the gear 210 rotates, the gear 210 is meshed with the second tooth 212, so that the torsion spring 29 generates a torsion force, and at the same time, the two support rods 26 slide away from each other in the guide groove 22, so that the first clamping plate 21 and the second clamping plate 25 are separated from each other, and the sampling cup is placed between the first clamping plate 21 and the second clamping plate 25 on the top of the placement table 1. Then, the pulling force of the handle 23 is released. At this time, under the torsion force of the torsion spring 29, the rotating shaft 28 returns to its original position, and then the first clamping plate 21 and the second clamping plate 25 clamp and fix the sampling cup. Then, the sampling cup samples the water discharged from the sampling tube. The operation is simple and convenient.

[0030] In summary, the automatic control unit can preset the switching status and time of the solenoid valve, automatically complete sampling and flushing, and operators do not need frequent manual operations, which improves work efficiency and reduces labor costs. Automatic timing flushing of the sampling tube can effectively prevent water sample impurities from contaminating the online instrument sampling probe, ensure accurate online instrument measurement, prevent monitoring distortion, and facilitate stable operation and precise control of the fine treatment system.

[0031] The manual control unit allows the operator to manually and independently control each solenoid valve through the touch screen under special circumstances to perform sampling or flushing operations; the one-button control unit can quickly start or stop the system to meet different operating requirements, increase the flexibility and convenience of system operation, and the system rationally controls the sampling and flushing process to avoid unnecessary loss of water samples, improve the utilization rate of water samples, reduce production costs, and have good economic and environmental benefits.

[0032] By pulling the handle 23 to drive the movement of related components, the first clamping plate 21 and the second clamping plate 25 can be separated. After putting in the sampling cup, the handle 23 is released. Under the action of the torsion spring 29, the first clamping plate 21 and the second clamping plate 25 can automatically clamp and fix the sampling cup. The whole process is simple and convenient to operate, and does not require complicated operating procedures and professional skills, which reduces the difficulty and threshold of sampling. The torsion force of the torsion spring 29 is used to clamp the sampling cup, which can provide a stable clamping force to ensure that the sampling cup remains fixed during the sampling process and is not easy to shake or tip over, thereby ensuring the accuracy and reliability of sampling and avoiding the problem of water sample spilling or inaccurate sampling volume due to loose fixation of the sampling cup.

[0033] Those skilled in the art will appreciate that various combinations and / or combinations of features described in the various embodiments and / or claims of the present invention may be made, even if such combinations and / or combinations are not explicitly described in the present invention. In particular, various combinations and / or combinations of features described in the various embodiments and / or claims of the present invention may be made, without departing from the spirit and teachings of the present invention. All such combinations and / or combinations fall within the scope of the present invention.

Claims

1. Automatic sampling and flushing system for fine treatment of thermal power plants, characterized by: It includes an operation panel module, a control module, a solenoid valve and a sampling tube, wherein the operation panel module is connected to the control module, the control module is connected to the solenoid valve, and the solenoid valve is connected to the sampling tube; The operation panel module is used to provide a visual operation interface so that operators can control it through the touch screen; The control module is used to execute the instructions of the operation panel module according to a predetermined logic; The solenoid valve is used to control the water sampling and flushing of the sampling tube according to the instructions of the control module; The sampling tube is used to be connected to the water outlet of the solenoid valve to take samples from the fine treatment system of the thermal power plant.

2. The automatic sampling and flushing system for fine treatment of thermal power plants according to claim 1, characterized in that: The operation panel module includes an automatic control unit, a manual control unit and a one-button control unit; The automatic control unit is used to preset the switch status of each solenoid valve to achieve automatic sampling and flushing functions; The manual control unit is used for the operator to select the manual mode through the touch screen to independently control the switch state of each solenoid valve; The one-button control unit is used to switch all solenoid valves on and off with one button according to operating requirements, thereby realizing rapid start or stop of the system.

3. The automatic sampling and flushing system for fine treatment of thermal power plants according to claim 2, characterized in that: The automatic control unit includes an automatic sampling mechanism, an automatic flushing mechanism and a timing mechanism; The automatic sampling mechanism is used to preset the switch status of each solenoid valve to realize the automatic sampling operation of the sampling tube; The automatic flushing mechanism is used to preset the switch state of each solenoid valve to realize the operation of flushing the sampling tube; The timing mechanism is used to preset the opening and closing time of each solenoid valve.

4. The automatic sampling and flushing system for fine treatment of thermal power plants according to claim 3, characterized in that: Each set of the timing mechanisms can be set to at least three sets of opening and closing times.

5. The automatic sampling and flushing system for fine treatment of thermal power plants according to claim 2, characterized in that: The manual control unit includes a manual sampling mechanism and a manual flushing mechanism; The manual sampling mechanism is used for the operator to individually select and control the sampling solenoid valve in manual mode to perform sampling operations; The manual flushing mechanism is used for the operator to individually select and control the solenoid valve for flushing in manual mode to perform flushing operations.

6. The automatic sampling and flushing system for fine treatment of thermal power plants according to claim 1, characterized in that: A placement platform (1) is provided on the lower side of the sampling tube, and a clamping assembly (2) is provided on the top of the placement platform (1); The clamping assembly (2) comprises a plurality of first clamping plates (21), second clamping plates (25) and a rotating shaft (28); a gear (210) is fixedly sleeved on the outer side of the rotating shaft (28); and support rods (26) are fixed to the bottoms of the first clamping plates (21) and the second clamping plates (25).

7. The automatic sampling and flushing system for fine treatment of thermal power plants according to claim 6, characterized in that: A first slide bar (24) and a second slide bar (27) are fixed to the bottom of the two support rods (26), respectively. A slide groove is provided inside the placement platform (1), and the outer sides of the first slide bar (24) and the second slide bar (27) are slidably connected to the inner sides of the slide groove.

8. The automatic sampling and flushing system for fine treatment of thermal power plants according to claim 7, characterized in that: A plurality of first teeth (211) are integrally formed on one side of the first slide bar (24), and a plurality of second teeth (212) are integrally formed on one side of the second slide bar (27), and one side of the first teeth (211) and the second teeth (212) are meshed with the outer side of the gear (210).

9. The automatic sampling and flushing system for fine treatment of thermal power plants according to claim 8, characterized in that: A torsion spring (29) is sleeved on the outer side of the rotating shaft (28), and two ends of the torsion spring (29) are respectively connected to the rotating shaft (28) and one side of the sliding groove.

10. The automatic sampling and flushing system for fine treatment of thermal power plants according to claim 9, characterized in that: The outer side of the rotating shaft (28) is rotatably connected to the inner side of the slide groove, a handle (23) is fixed to one end of the first slide rod (24), a plurality of guide grooves (22) are opened on the top of the placement table (1), and the outer side of the support rod (26) is slidably connected to the inner side of the guide groove (22).

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