Circulating water trash holding device of thermal generator set

Abstract

The invention belongs to the technical field of thermal power generation, and provides a thermal generator set circulating water trash holding device which comprises a trash holding mechanism formed by splicing a plurality of unit grids and a hoisting mechanism fixed above the trash holding mechanism. Each unit grid comprises a unit plate, a first filtering area and a second filtering area, the first filtering area and the second filtering area are arranged on the unit plate, a fixed filtering net is installed on the first filtering area, a filtering piece is installed at the second filtering area, and the unit grid further comprises vibration mechanisms arranged on the first filtering area and the second filtering area so as to drive the fixed filtering net to vibrate. The vibrating mechanism comprises a plurality of movable guide rods movably arranged in the first filtering area and a power unit arranged in the second filtering area, and the movable guide rods are arranged in the width direction of the unit plates. The trash holding device is convenient to mount and dismount, the filter screen mounted on the outer side can vibrate under the driving of water flow, blockage is avoided, and work is stable and reliable.

Description

Technical Field

[0001] The invention relates to the technical field of thermal power generation, and in particular to a circulating water pollution intercepting device for a thermal power generating set. Background Art

[0002] At present, the thermal power generating unit adopts closed-loop circulating water, which is mainly composed of cooling tower, cleaning machine, circulating water pump and other coolers such as condenser. The cooling tower mainly provides cooling water for other coolers such as condenser, and the internal heat exchange of the cooling tower adopts PVC material with a thickness of about 0.3mm. As the unit continues to run, the water distribution pipe in the cooling tower cracks or the splashing device falls off, which will cause the water filling to be easily broken and produce a large number of filling fragments. The larger filling fragments will be blocked on the pipe mouth of the heat exchanger heat transfer tube, reducing the cooling effect of the heat exchanger. The blockage of the cooler not only affects the safe operation of the equipment, but also reduces the heat exchange effect, especially for the unit condenser. It has a great impact on the economy of the unit. In order to do this, the staff installed a filter in the circulating water ditch and used a garbage cleaning machine to clean the filter. The traditional garbage cleaning machine is mainly composed of a reduction mechanism, a mesh grate, a brush and a chain assembly. Due to the relatively large design size of the garbage cleaning machine, the brush is positioned in the groove by the rollers at both ends, but the groove of the garbage cleaning machine is narrow, which may easily cause the roller to fall out and cause jamming during operation, and may seriously cause deformation and damage to the brush assembly. The inspection and maintenance of the garbage cleaning machine can only be carried out after the unit is shut down and the remaining water in the pool is pumped out. It requires a lot of manpower and materials to repair. Therefore, a circulating water garbage intercepting device for thermal power generator sets with reliable performance and easy maintenance is needed. Summary of the invention

[0003] The object of the present invention is to provide a circulating water pollution blocking device for a thermal power generating set, which can solve the above-mentioned problem.

[0004] The present invention is achieved in that: A circulating water trash intercepting device for a thermal power generator set comprises a trash intercepting mechanism composed of a plurality of unit grilles spliced ​​together and a lifting mechanism fixed above the trash intercepting mechanism.

[0005] The unit grille includes a unit plate and a first filter area and a second filter area arranged on the unit plate, wherein a fixed filter screen is installed on the first filter area, and a filter element is installed at the second filter area. The unit grille also includes a vibration mechanism arranged on the first filter area and the second filter area to drive the fixed filter screen to vibrate.

[0006] The vibration mechanism includes a plurality of movable guide rods movably arranged in the first filter area and a power unit arranged in the second filter area. The movable guide rods are arranged along the width direction of the unit plate, and one end of the movable guide rod extends into the second filter area and is connected to the power unit.

[0007] A plurality of groups of vibration units are arranged on the movable guide rod along the length direction so as to knock the fixed filter screen as the movable guide rod moves.

[0008] Furthermore, a lifting lug is installed on the top of the unit plate of the unit grille, and the lifting mechanism includes a beam fixed to the outside, a rotating suspension rod rotatably installed at the bottom of the beam, and a driving motor for driving the rotating suspension rod to rotate. A plurality of rollers are installed on the rotating suspension rod along the length direction, and the rollers correspond to the unit grilles one by one, and a traction steel cable is wound and fixed on the outside of the roller, and the bottom end of the traction steel cable is connected to the lifting lug on the corresponding unit grille.

[0009] Furthermore, a guide plate is installed at the bottom of the beam, and a guide hole corresponding to the steel cable is opened on the guide plate. The roller and the rotating suspension rod are movably connected and can move along their axial direction. Elastic blocking units are provided on the rotating suspension rods on both sides of the roller.

[0010] Furthermore, the elastic blocking unit includes a ring fixed on the outside of the rotating boom and a columnar spring located between the ring and the roller, and the columnar spring is sleeved on the outside of the rotating boom.

[0011] Furthermore, the power unit includes a rotating shaft rotatably installed in the second filter area, and a plurality of cams and blades fixed on the rotating shaft, wherein the rotating shaft is arranged along the length direction of the unit plate, the cams and the movable guide rods correspond one to one, and the outer annular surface of the cams conflicts with the end of the movable guide rod.

[0012] Furthermore, a guide hole corresponding to the movable guide rod is opened on the unit plate, and a plurality of guide grooves are distributed circumferentially on the inner wall of the guide hole. A guide plate is slidably arranged in each guide groove, and the guide plate and the inner wall of one side of the guide groove are connected by a return spring.

[0013] Furthermore, the vibration unit includes a knocking piece installed on the fixed filter screen and a driving piece connected to the movable guide rod, wherein the knocking piece includes a guide cylinder fixed on the fixed filter screen, a movable column slidably arranged in the guide cylinder, a baffle is fixed at one end of the guide cylinder away from the movable column, the inner wall of the guide cylinder has a retaining ring for blocking the sliding of the movable column, and the side of the guide cylinder close to the baffle is connected to it by a spring, and the driving piece includes a connecting rod, and the two ends of the connecting rod are rotatably connected to an articulated seat one and an articulated seat two by a pin shaft, and the articulated seat one and the articulated seat two are respectively fixed to the guide cylinder and the movable guide rod.

[0014] Furthermore, the filter element is a filter screen fixed on both sides of the second filter area.

[0015] Furthermore, the filter element includes a movable filter, and a first mounting groove and a second mounting groove which are slidably connected to the movable filter are respectively provided in the shell of the unit plate, and a spring connected to the movable filter is installed in the second mounting groove, and a protrusion is provided on the side of the movable filter close to the rotating shaft, and when the rotating shaft rotates, the cam can contact with the protrusion to drive the movable filter to slide, and the cam can be separated from the protrusion if it continues to rotate.

[0016] Furthermore, the movable filter screen and the fixed filter screen are both wire meshes made of stainless steel.

[0017] The beneficial effects of the present invention are as follows: the pollution-blocking device for circulating water of a thermal power generator set proposed in the present invention comprises a pollution-blocking mechanism composed of a plurality of unit grilles spliced ​​together and a lifting mechanism fixed above the pollution-blocking mechanism. The pollution-blocking mechanism can effectively block large impurities in the water, such as garbage suspended in the water, and the unit grille comprises a unit plate and a first filter area and a second filter area arranged on the unit plate, wherein a fixed filter screen is installed on the first filter area, and a filter element is installed at the second filter area, and the unit grille also comprises a vibration mechanism arranged on the first filter area and the second filter area to drive the fixed filter screen to vibrate. The vibration mechanism can drive the filter screen and the filter element to vibrate, thereby preventing impurities from adhering to the surface of the filter screen and causing blockage, and the use effect is better and the operation is stable and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural schematic diagram of a unit grid of the present invention; Figure 3 is a schematic diagram of the cross-sectional structure of a unit grid of the present invention; Figure 4 The present invention Figure 2 A magnified image of point A; Figure 5 The present invention Figure 3 A magnified view of point B; Figure 6 The present invention Figure 3 Enlarged view of point C.

[0020] Icons: beam 1, roller 2, rotating suspension rod 3, guide plate 4, guide hole 5, traction cable 6, unit grille 7, lifting ear 8, unit plate 9, first filter area 10, fixed filter screen 11, rotating shaft 12, second filter area 13, cam 14, paddle 15, movable guide rod 16, connecting rod 17, hinged seat 18, connecting rod 19, hinged seat 20, baffle 21, retaining ring 22, guide cylinder 23, movable column 24, socket 25, first mounting groove 26, movable filter screen 27, protrusion 28, second mounting groove 29, spring 30, return spring 31, guide plate 32, guide hole 33. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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 creative work are within the scope of protection of the present invention.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] In the description of the present invention, it is necessary to understand that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0024] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0026] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0027] In the present invention, unless otherwise clearly specified and limited, a first feature being above or below a second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, a first feature being above, above, and above a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being below, below, and below a second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature. Example

[0028] This embodiment provides a circulating water pollution interception device for a thermal power generator set, such as Figure 1-6 The circulating water pollution blocking device of the thermal power generator set comprises a pollution blocking mechanism composed of a plurality of unit grids 7 and a lifting mechanism fixed above the pollution blocking mechanism. The pollution blocking mechanism can effectively block large impurities in the water, such as garbage suspended in the water.

[0029] The unit grid 7 includes a unit plate 9 and a first filter area 10 and a second filter area 13 provided on the unit plate 9, wherein a fixed filter screen 11 is installed on the first filter area 10, and a filter element is installed at the second filter area 13, and the unit grid 7 also includes a vibration mechanism provided on the first filter area 10 and the second filter area 13 to drive the fixed filter screen 11 to vibrate. The vibration mechanism can drive the filter screen and the filter element to vibrate, thereby preventing impurities from adhering to the filter screen surface and causing blockage.

[0030] In the present invention, the vibration mechanism includes a plurality of movable guide rods 16 movably arranged in the first filter area 10 and a power unit arranged in the second filter area 13. The movable guide rods 16 are arranged along the width direction of the unit plate 9, and one end of the movable guide rod 16 extends into the second filter area 13 and is connected to the power unit. The power unit proposed in the present invention can be driven by water flow, can make full use of water energy, save resources, and has better economy.

[0031] In the present invention, please refer to Figure 3 A plurality of vibration units are arranged on the movable guide rod 16 along the length direction so as to strike the fixed filter screen 11 as the movable guide rod 16 moves.

[0032] Please refer to the specific Figure 1 The top of the unit plate 9 of the unit grid 7 is equipped with a lifting lug 8, which is integrally formed with the unit plate, and the lifting mechanism includes a crossbeam 1 fixed to the outside, a rotating suspension rod 3 rotatably installed at the bottom of the crossbeam 1, and a driving motor for driving the rotating suspension rod 3 to rotate. Several rollers 2 are installed on the rotating suspension rod 3 along the length direction, and the rollers 2 correspond to the unit grid 7 one by one, and a traction steel cable 6 is wound and fixed on the outside of the roller 2, and the bottom end of the traction steel cable 6 is connected to the lifting lug 8 on the corresponding unit grid 7. The traction steel cable 6 is made of multiple strands of steel cables, and the roller 2 is a cylindrical structure, and the outer surface of the roller 2 is provided with anti-slip grooves.

[0033] In the present invention, in order to enable the lifting mechanism to lift each unit grid more smoothly, a guide plate 4 is also installed at the bottom of the crossbeam 1, and a guide hole 5 corresponding to the steel cable 6 is opened on the guide plate 4, and the roller 2 and the rotating suspension rod 3 are movably connected and can move along the axial direction thereof, and the rotating suspension rods 3 located on both sides of the roller 2 are provided with elastic blocking units. In this scheme, when lifting the unit grid, since the traction steel cable 6 is wound around the axial direction of the roller 2, in order to prevent the traction steel cable from being easily bent and damaged during winding, and to make the force more uniform, the roller 2 is slidably set on the rotating suspension rod 3. The elastic blocking unit includes a ring (not shown) fixed on the outside of the rotating suspension rod 3 and a columnar spring (not shown) located between the ring and the roller 2, and the columnar spring is sleeved on the outside of the rotating suspension rod 3. Through the above structure, the axial movement of the roller 2 on the rotating suspension rod will not be too rapid, the operation is more stable, and the structure is not easily damaged.

[0034] Please refer to Figure 2 Combined with Figure 6 The power unit proposed in this scheme includes a rotating shaft 12 rotatably mounted in the second filtering area 13, and a plurality of cams 14 fixed on the rotating shaft 12, wherein the rotating shaft 12 is arranged along the length direction of the unit plate 9. The cams 14 correspond to the movable guide rods 16 one by one, and the outer annular surface of the cams 14 abuts against the end of the movable guide rods 16. When the rotating shaft 12 rotates For details, please refer to Figure 4 The unit plate is provided with a guide hole 33 corresponding to the movable guide rod 16, and the inner wall of the guide hole 33 is provided with a plurality of guide grooves along the circumferential direction. A guide plate 32 is slidably arranged in each guide groove, and the guide plate 32 is connected to the inner wall of one side of the guide groove by a return spring 31.

[0035] In an optional embodiment of the present invention, the vibration unit includes a knocking member installed on the fixed filter 11 and a driving member connected to the movable guide rod 16. The knocking member includes a guide cylinder 23 fixed on the fixed filter 11, a movable column 24 slidably arranged in the guide cylinder 23, a baffle 21 is fixed to the end of the guide cylinder 23 away from the movable column 24, the inner wall of the guide cylinder 23 has a retaining ring 22 for blocking the sliding of the movable column 24, and the side of the guide cylinder 23 close to the baffle 21 is connected to it by a spring. The driving member includes a connecting rod 19, and the two ends of the connecting rod 19 are respectively rotatably connected to an articulated seat 18 and an articulated seat 20 through a pin shaft, and the articulated seat 18 and the articulated seat 20 are respectively fixed to the guide cylinder 23 and the movable guide rod 16.

[0036] In the present invention, the filter element is a filter screen fixed on both sides of the second filter area 13. The filter element includes a movable filter screen 27, and a first mounting groove 26 and a second mounting groove 29 are respectively provided in the housing of the unit plate 9, which are slidably plugged with the movable filter screen 27. A spring 30 connected to the movable filter screen 27 is installed in the second mounting groove 29, and a protrusion 28 is provided on the side of the movable filter screen 27 close to the rotating shaft 12, and when the rotating shaft 12 rotates, the cam 14 can contact with the protrusion 28 to drive the movable filter screen 27 to slide, and the cam 14 can continue to rotate and separate from the protrusion 28. The movable filter screen 27 and the fixed filter screen 11 are both wire meshes made of stainless steel.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A circulating water pollution interception device for a thermal power generating unit, characterized in that: It includes a dirt-blocking mechanism composed of a plurality of unit grilles and a lifting mechanism fixed above the dirt-blocking mechanism; The unit grille includes a unit plate and a first filter area and a second filter area arranged on the unit plate, wherein a fixed filter screen is installed on the first filter area, and a filter element is installed at the second filter area, and the unit grille also includes a vibration mechanism arranged on the first filter area and the second filter area to drive the fixed filter screen to vibrate; The vibration mechanism includes a plurality of movable guide rods movably arranged in the first filter area and a power unit arranged in the second filter area, the movable guide rods are arranged along the width direction of the unit plate, and one end of the movable guide rod extends into the second filter area and is connected to the power unit; A plurality of groups of vibration units are arranged on the movable guide rod along the length direction so as to knock the fixed filter screen as the movable guide rod moves.

2. A circulating water pollution interception device for a thermal power generating unit according to claim 1, characterized in that: The top of the unit plate of the unit grille is equipped with a lifting lug, and the lifting mechanism includes a beam fixed to the outside, a rotating suspension rod rotatably installed at the bottom of the beam, and a driving motor for driving the rotating suspension rod to rotate. A plurality of rollers are installed on the rotating suspension rod along the length direction, and the rollers correspond to the unit grilles one by one, and a traction steel cable is wound and fixed on the outside of the roller, and the bottom end of the traction steel cable is connected to the lifting lug on the corresponding unit grille.

3. A circulating water pollution interception device for a thermal power generating unit according to claim 2, characterized in that: A guide plate is also installed at the bottom of the crossbeam, and a guide hole corresponding to the steel cable is opened on the guide plate. The winding roller and the rotating suspension rod are movably connected and can move along their axial direction. Elastic blocking units are provided on the rotating suspension rods on both sides of the winding roller.

4. A circulating water pollution interception device for a thermal power generating set according to claim 3, characterized in that: The elastic blocking unit comprises a sleeve fixed on the outside of the rotating suspension rod and a columnar spring located between the sleeve and the roller, wherein the columnar spring is sleeved on the outside of the rotating suspension rod.

5. A circulating water pollution interception device for a thermal power generating set according to claim 1 or 4, characterized in that: The power unit includes a rotating shaft rotatably installed in the second filtering area, and a plurality of cams and blades fixed on the rotating shaft, wherein the rotating shaft is arranged along the length direction of the unit plate, the cams and the movable guide rods correspond one to one, and the outer annular surface of the cams conflicts with the end of the movable guide rod.

6. A circulating water pollution interception device for a thermal power generating set according to claim 5, characterized in that: The unit plate is provided with a guide hole corresponding to the movable guide rod, and the inner wall of the guide hole is circumferentially distributed with a plurality of guide grooves, each of which is slidably provided with a guide plate, and the guide plate and the inner wall of one side of the guide groove are connected by a return spring.

7. A circulating water pollution interception device for a thermal power generating set according to claim 6, characterized in that: The vibration unit includes a knocking piece installed on the fixed filter screen and a driving piece connected to the movable guide rod, wherein the knocking piece includes a guide cylinder fixed on the fixed filter screen, a movable column slidably arranged in the guide cylinder, a baffle is fixed on the end of the guide cylinder away from the movable column, the inner wall of the guide cylinder has a baffle ring for blocking the sliding of the movable column, and the side of the guide cylinder close to the baffle is connected to the baffle by a spring, and the driving piece includes a connecting rod, and the two ends of the connecting rod are respectively connected to an articulated seat 1 and an articulated seat 2 by a pin shaft, and the articulated seat 1 and the articulated seat 2 are respectively fixed to the guide cylinder and the movable guide rod.

8. A circulating water pollution interception device for a thermal power generating unit according to claim 7, characterized in that: The filter element is a filter screen fixed on both sides of the second filter area.

9. A circulating water pollution interception device for a thermal power generating unit according to claim 8, characterized in that: The filter element includes a movable filter, and a first mounting groove and a second mounting groove which are slidably plugged into the movable filter are respectively provided in the shell of the unit plate, and a spring connected to the movable filter is installed in the second mounting groove, and a protrusion is provided on the side of the movable filter close to the rotating shaft, and when the rotating shaft rotates, the cam can contact with the protrusion to drive the movable filter to slide, and the cam can be separated from the protrusion if it continues to rotate.

10. A circulating water pollution interception device for a thermal power generating set according to claim 9, characterized in that: The movable filter screen and the fixed filter screen are both wire meshes made of stainless steel.

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