Thermal power plant pit liquid level device

Abstract

The utility model relates to the technical field of safety protection, and discloses a thermal power plant pit liquid level device which comprises a base, a water pump and a controller, the water pump and the controller are fixedly installed on the top face of the base, the input end of the water pump is fixedly connected with a drainage pipe, the bottom end of the drainage pipe is fixedly communicated with an outer casing, and a cleaning assembly is rotationally arranged in the outer casing. A rotating assembly is arranged at the top end of the cleaning assembly, multiple sets of elastic ropes are wound and fixed to the rotating assembly, a floating plate is slidably connected to the side wall of the drainage pipe in a penetrating mode, a control assembly is slidably connected to the upper end of the side wall of the drainage pipe, a push plate is fixedly connected to the top face of the control assembly, and an electric push rod is fixedly connected to the side wall of the base. The movable end of the electric push rod is fixedly connected with the top face of the push plate. Through the arrangement of the outer housing, the cleaning assembly and the rotation assembly, the drainage pipe is protected and can be automatically cleaned, and the safety height of the liquid level is flexibly adjusted through the arrangement of the electric push rod, the push plate and the control assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of safety protection, in particular to a pit liquid level device for a thermal power plant. Background Art

[0002] The pits in thermal power plants are used for drainage during the production process and are usually equipped with liquid level devices. When the water level is higher than the specified value, the accumulated water is discharged through a water pump to ensure the safety of the equipment.

[0003] For example, a thermal power plant pit level device with publication number CN217932510U includes a thermal power plant pit, a mounting block is fixedly arranged in the thermal power plant pit, a bottom groove is provided at the bottom of the mounting block, mounting holes are provided on both sides of the bottom groove, a filter plate is fixedly arranged in the mounting hole, a connecting groove is provided on the top inner wall of the bottom groove, limiting grooves are provided on both sides of the connecting groove, a limiting plate is in sliding contact with the two limiting grooves, a counterweight rod is fixedly arranged at the bottom of the limiting plate, a floating plate is fixedly arranged at the bottom end of the counterweight rod, a conductive sheet is provided on the top of the limiting plate and the inner wall of the top of the connecting groove, a water pump and a timing controller are fixedly arranged on the side of the mounting block, and a pumping pipe and a drain pipe are connected to the water pump. The utility model has the following advantages and effects: it can conveniently control the liquid level of the thermal power plant pit, automatically discharge the accumulated water, and has good safety.

[0004] There are still some shortcomings in the above patent, such as: no protective measures are set at the drainage pipe, when it is blocked, it is easy to lead to reduced drainage efficiency, slow drop of liquid level, and long-term connection of the two conductive plates may easily cause equipment burnout; the safe height of the liquid level cannot be flexibly adjusted according to the actual drainage speed during use, which is inconvenient to use.

[0005] Therefore, we propose a pit liquid level device for a thermal power plant to solve the above-mentioned problems. Utility Model Content

[0006] The purpose of the utility model is to provide a pit liquid level device for a thermal power plant to solve the problems that no protective measures are provided at the drainage pipe proposed in the above-mentioned background technology, when it is blocked, it is easy to cause the drainage efficiency to decrease, the liquid level to drop slowly, and the two conductive sheets to be connected for a long time, which is easy to cause the equipment to burn out; the safe height of the liquid level cannot be flexibly adjusted according to the actual drainage speed during use, which is inconvenient to use.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pit liquid level device for a thermal power plant, comprising a base, a water pump fixedly mounted on the top surface of the base, and a controller, the input end of the water pump is fixedly connected to a drain pipe, the bottom end of the drain pipe is fixedly connected to an outer cover shell, a cleaning component is rotatably arranged inside the outer cover shell, a rotating component is arranged on the top of the cleaning component, a plurality of groups of elastic ropes are wound and fixed on the rotating component, a floating plate is slidably connected through the side wall of the drain pipe, one end of the elastic rope passes through the top surface of the outer cover shell and is fixedly connected to the bottom surface of the floating plate, a control component is slidably connected to the upper end of the side wall of the drain pipe, a push plate is fixedly connected to the top surface of the control component, the push plate is slidably connected to the side wall of the base, an electric push rod is fixedly connected to the side wall of the base, and the movable end of the electric push rod is fixedly connected to the top surface of the push plate.

[0008] Preferably, a plurality of filter holes are equidistantly formed at the lower end of the side wall of the outer cover shell along the circumferential direction.

[0009] Preferably, the cleaning component includes a first rotating shaft rotatably connected to the bottom surface of the inner cavity of the outer cover shell, the side walls of the first rotating shaft are symmetrically fixedly connected with mounting seats, each of the side walls of the mounting seats is fixedly connected with a plurality of fixing rods, one end of each of the fixing rods is fixedly connected with an elastic rotating part, and a cleaning rod is fixedly connected to the side wall of the elastic rotating part.

[0010] Preferably, the rotating assembly includes a winding wheel fixedly connected to the top end of the first rotating shaft and a plurality of second rotating shafts fixedly connected to the side wall of the inner cavity of the outer cover shell, the plurality of second rotating shafts are arranged in a circular array, and one end of each of the second rotating shafts is rotatably connected to a guide wheel.

[0011] Preferably, the control component includes a waterproof shell that is slidably connected to the upper end of the side wall of the drain pipe, and sliding rods are symmetrically slidably connected to the bottom surface of the waterproof shell. The bottom ends of the two sliding rods are commonly fixedly connected to a support plate, and the support plate is slidably connected to the side wall of the drain pipe. The bottom surface of the waterproof shell and the top surface of the support plate are elastically connected by two springs, and the two sliding rods are respectively passed through the inner circles of the two springs, and a conductive sheet is fixedly provided on the top end of one of the sliding rods and the top surface of the inner cavity of the waterproof shell, and an electromagnet is fixedly provided on the top end of the other sliding rod and the top surface of the inner cavity of the waterproof shell.

[0012] Preferably, the water pump, conductive sheet, electromagnet and electric push rod are all electrically connected to the controller.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The drain pipe is protected by the outer cover shell, cleaning component and rotating component. The lifting of the floating plate drives the rotating component to rotate, which further drives the cleaning component to rotate and clean the filter holes on the outer cover shell to ensure stable drainage of the drain pipe and avoid the problem of the conductive sheet being damaged due to the slow drop of the liquid level after clogging.

[0015] 2. By setting up the electric push rod, push plate and control component, and by changing the distance between the control component and the floating plate, the safe height of the liquid level can be flexibly adjusted, which is convenient to use. At the same time, the electromagnet increases the stability when the two conductive sheets are connected. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the interior of the outer cover of the utility model;

[0018] Figure 3 It is an enlarged schematic diagram of the structure of part A in the utility model;

[0019] Figure 4 It is a structural schematic diagram of the control component part in the utility model.

[0020] In the figure: 1. base; 2. water pump; 3. controller; 4. drain pipe; 5. outer cover shell; 51. filter hole; 6. cleaning component; 61. first rotating shaft; 62. mounting seat; 63. fixing rod; 64. elastic rotating member; 65. cleaning rod; 7. rotating component; 71. winding wheel; 72. second rotating shaft; 73. guide wheel; 8. elastic rope; 9. floating plate; 10. control component; 101. waterproof shell; 102. sliding rod; 103. abutment plate; 104. spring; 105. conductive sheet; 106. electromagnet; 11. push plate; 12. electric push rod. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Example 1

[0023] See also Figure 1-Figure 3A pit liquid level device for a thermal power plant comprises a base 1, a water pump 2 and a controller 3 fixedly mounted on the top surface of the base 1, an input end of the water pump 2 is fixedly connected with a drain pipe 4, the bottom end of the drain pipe 4 is fixedly connected with an outer cover shell 5, a cleaning component 6 is rotatably arranged inside the outer cover shell 5, a rotary component 7 is arranged on the top of the cleaning component 6, a plurality of groups of elastic ropes 8 are wound and fixed on the rotary component 7, a floating plate 9 is slidably connected to the side wall of the drain pipe 4, one end of the elastic rope 8 is fixedly connected to the bottom surface of the floating plate 9 after passing through the top surface of the outer cover shell 5, a control component 10 is slidably connected to the upper end of the side wall of the drain pipe 4, a push plate 11 is fixedly connected to the top surface of the control component 10, the push plate 11 is slidably connected to the side wall of the base 1, an electric push rod 12 is fixedly connected to the side wall of the base 1, and the movable end of the electric push rod 12 is fixedly connected to the top surface of the push plate 11.

[0024] A plurality of filter holes 51 are formed at equal intervals along the circumferential direction at the lower end of the side wall of the outer casing 5 .

[0025] The cleaning assembly 6 includes a first rotating shaft 61 rotatably connected to the bottom surface of the inner cavity of the outer cover shell 5, and the side wall of the first rotating shaft 61 is symmetrically fixedly connected with a mounting seat 62, and each mounting seat 62 is fixedly connected to a plurality of fixing rods 63 on the side wall, and one end of each fixing rod 63 is fixedly connected to an elastic rotating member 64, and a cleaning rod 65 is fixedly connected to the side wall of the elastic rotating member 64.

[0026] The rotating assembly 7 includes a winding wheel 71 fixedly connected to the top of the first rotating shaft 61 and a plurality of second rotating shafts 72 fixedly connected to the side wall of the inner cavity of the outer cover shell 5. The plurality of second rotating shafts 72 are arranged in a circular array, and one end of each second rotating shaft 72 is rotatably connected to a guide wheel 73.

[0027] In this embodiment, the drain pipe 4 is protected by a plurality of filter holes 51 provided on the outer housing 5 during drainage to prevent debris from directly entering the pipe and causing blockage; when the liquid level in the pit rises, the floating plate 9 rises accordingly and pulls the elastic rope 8. Since the elastic rope 8 is wound and fixed on the winding wheel 71 after passing through the guide wheel 73, the winding wheel 71 can be driven to rotate by multiple sets of elastic ropes 8. When the winding wheel 71 rotates, the cleaning rod 65 is driven to rotate. The sum of the lengths of the cleaning rod 65 and the fixing rod 63 is greater than the length of the outer housing 5. The inner cavity radius of the cover shell 5, so when rotating, the cleaning rod 65 rotates a certain angle with the elastic rotating member 64 as the axis, and then slides against the inner cavity side wall of the outer cover shell 5. When rotating to the filter hole 51, the elastic rotating member 64 returns the cleaning rod 65 to the center through the elastic force, and is in a straight line with the fixed rod 63. One end of the cleaning rod 65 bounces into the filter hole 51 to scrape and clean the impurities adsorbed therein. The elastic rotating member 64 is a prior art, and its main internal structure is a torsion spring, which will not be repeated here.

[0028] Example 2

[0029] This embodiment is an improvement made on the basis of embodiment 1. For details, please refer to Figure 1 and Figure 4 The control component 10 includes a waterproof shell 101 that is slidably connected to the upper end of the side wall of the drain pipe 4. Slide rods 102 are symmetrically slidably connected to the bottom surface of the waterproof shell 101. The bottom ends of the two slide rods 102 are commonly fixedly connected to a support plate 103. The support plate 103 and the side wall of the drain pipe 4 are slidably connected. The bottom surface of the waterproof shell 101 and the top surface of the support plate 103 are elastically connected by two springs 104, and the two slide rods 102 are respectively inserted into the inner circles of the two springs 104. A conductive sheet 105 is fixedly provided on the top end of one of the slide rods 102 and the top surface of the inner cavity of the waterproof shell 101, and an electromagnet 106 is fixedly provided on the top end of the other slide rod 102 and the top surface of the inner cavity of the waterproof shell 101.

[0030] The water pump 2 , the conductive sheet 105 , the electromagnet 106 and the electric push rod 12 are all electrically connected to the controller 3 .

[0031] In this embodiment: when the liquid level in the pit rises, the float plate 9 and the push plate 103 are pushed against each other, driving them to slide upward, so that the two conductive sheets 105 are connected. After the electrical signal is transmitted to the controller 3, it starts the water pump 2 to drain water according to the set time, speed and other parameters. At the same time, the electromagnet 106 is timed to be energized so that it attracts each other, thereby increasing the stability of the connection between the two conductive sheets 105. During normal drainage, as the liquid level drops, the float plate 9 and the push plate 103 gradually separate from each other, and under the action of the electromagnet 106, the water pump 2 is continuously connected for a period of time. After a period of drainage, the controller 3 ends the timing, the electromagnet 106 is powered off, and under the elastic force of the spring 104, the push plate 103 drives the slide bar 102 to reset, the two conductive sheets 105 and the two electromagnets 106 are separated from each other, and the water pump 2 is turned off.

[0032] Working principle: the push plate 11 is pushed by the electric push rod 12, driving the control component 10 to move along the side wall of the drain pipe 4 to adjust the safe liquid level height; when the liquid level in the pit rises, the floating plate 9 is driven to rise synchronously. When the critical range of the safe liquid level is reached, the floating plate 9 and the abutment plate 103 are abutted, and the abutment plate 103 drives the slide bar 102 to slide upward, and the two conductive sheets 105 contact each other, starting the water pump 2 for drainage. At the same time, the two electromagnets 106 are energized to attract each other. As the liquid level drops, the floating plate 9 and the abutment plate 103 gradually separate from each other; after the timing of the controller 3 ends, the electromagnet 106 is powered off, the abutment plate 103 is reset, the two conductive sheets 105 are disconnected, and the water pump 2 is turned off; during the lifting process of the floating plate 9, the elastic rope 8 is pulled at the same time, and multiple groups of elastic ropes 8 drive the first rotating shaft 61 to rotate, and then drive the cleaning rod 65 to rotate to clean the filter hole 51 opened on the outer cover shell 5.

[0033] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0034] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pit liquid level device for a thermal power plant, comprising a base (1), a water pump (2) fixedly mounted on the top surface of the base (1), and a controller (3), characterized in that: The input end of the water pump (2) is fixedly connected to a drainage pipe (4), the bottom end of the drainage pipe (4) is fixedly connected to an outer cover shell (5), a cleaning assembly (6) is rotatably arranged inside the outer cover shell (5), a rotating assembly (7) is arranged at the top end of the cleaning assembly (6), a plurality of groups of elastic ropes (8) are wound and fixed on the rotating assembly (7), a floating plate (9) is slidably connected to the side wall of the drainage pipe (4), one end of the elastic rope (8) is fixedly connected to the bottom surface of the floating plate (9) after passing through the top surface of the outer cover shell (5), a control assembly (10) is slidably connected to the upper end of the side wall of the drainage pipe (4), a push plate (11) is fixedly connected to the top surface of the control assembly (10), the push plate (11) is embedded and slidably connected to the side wall of the base (1), an electric push rod (12) is fixedly connected to the side wall of the base (1), and the movable end of the electric push rod (12) is fixedly connected to the top surface of the push plate (11).

2. A thermal power plant pit liquid level device according to claim 1, characterized in that: A plurality of filter holes (51) are provided at equal intervals along the circumferential direction at the lower end of the side wall of the outer casing (5).

3. A thermal power plant pit liquid level device according to claim 1, characterized in that: The cleaning assembly (6) comprises a first rotating shaft (61) rotatably connected to the bottom surface of the inner cavity of the outer housing (5); the side wall of the first rotating shaft (61) is symmetrically fixedly connected to a mounting seat (62); a plurality of fixing rods (63) are fixedly connected to the side wall of each mounting seat (62); one end of each fixing rod (63) is fixedly connected to an elastic rotating member (64); and a cleaning rod (65) is fixedly connected to the side wall of the elastic rotating member (64).

4. A thermal power plant pit liquid level device according to claim 3, characterized in that: The rotary assembly (7) comprises a winding wheel (71) fixedly connected to the top end of the first rotating shaft (61) and a plurality of second rotating shafts (72) fixedly connected to the side wall of the inner cavity of the outer housing (5); the plurality of second rotating shafts (72) are arranged in a circular array, and one end of each second rotating shaft (72) is rotatably connected to a guide wheel (73).

5. A thermal power plant pit liquid level device according to claim 1, characterized in that: The control component (10) comprises a waterproof shell (101) which is slidably connected to the upper end of the side wall of the drain pipe (4); a sliding rod (102) is symmetrically slidably connected to the bottom surface of the waterproof shell (101); the bottom ends of the two sliding rods (102) are fixedly connected to a support plate (103); the support plate (103) is slidably connected to the side wall of the drain pipe (4); the bottom surface of the waterproof shell (101) and the top surface of the support plate (103) are elastically connected via two springs (104); the two sliding rods (102) are respectively inserted into the inner circles of the two springs (104); a conductive sheet (105) is fixedly provided on the top end of one of the sliding rods (102) and the top surface of the inner cavity of the waterproof shell (101); and an electromagnet (106) is fixedly provided on the top end of the other sliding rod (102) and the top surface of the inner cavity of the waterproof shell (101).

6. A thermal power plant pit liquid level device according to claim 5, characterized in that: The water pump (2), the conductive sheet (105), the electromagnet (106) and the electric push rod (12) are all electrically connected to the controller (3).

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