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CN-121977366-A - Flow limiting device for uniform water distribution of cooling tower

CN121977366ACN 121977366 ACN121977366 ACN 121977366ACN-121977366-A

Abstract

The invention discloses a flow limiting device for uniform water distribution of a cooling tower, which comprises a water diversion bin, wherein the lower end of the side wall of the water diversion bin is respectively communicated with a plurality of water diversion pipes in a circumferential array, the top end of each water diversion pipe is provided with a flow limiting frame, the inner side of each flow limiting frame is provided with a flow limiting assembly, the flow limiting assembly comprises a piston frame and a stop block for controlling the water supply flow, the other end of each water diversion pipe is communicated with a water storage bin, and the inner side of the water storage bin is provided with a shielding assembly for controlling the water level in the water storage bin.

Inventors

  • SONG MINGWEI

Assignees

  • 山东百川工业科技集团有限公司

Dates

Publication Date
20260505
Application Date
20260318

Claims (8)

  1. 1. The flow limiting device for uniform water distribution of the cooling tower comprises a water diversion bin (2) and is characterized in that the lower end of the side wall of the water diversion bin (2) is provided with a plurality of water diversion pipes (3) in a circumferential array, the top ends of the water diversion pipes (3) are provided with flow limiting frames (4), the inner sides of the flow limiting frames (4) are provided with flow limiting components, and the flow limiting components comprise piston frames (5) and check blocks (7) and are used for controlling the water supply flow; The other end of the water diversion pipe (3) is communicated with a water storage bin (8), a shielding component is arranged on the inner side of the water storage bin (8) and used for controlling the water level in the water storage bin (8), a vertical cylinder (12) is arranged at the bottom of the water storage bin (8), and a lifting component is arranged on the inner side of the vertical cylinder (12) and used for controlling the spraying speed and flow.
  2. 2. The flow limiting device for uniform water distribution of the cooling tower according to claim 1, wherein the inner side of the flow limiting frame (4) is provided with a first inner groove (401) and a second inner groove (402), the first inner groove (401) and the second inner groove (402) are mutually communicated, and the bottoms of the first inner groove (401) and the second inner groove (402) are both communicated with the water distribution pipe (3).
  3. 3. The flow limiting device for uniform water distribution of the cooling tower according to claim 2, wherein the inner side of the first inner groove (401) is vertically and slidably connected with a piston frame (5), a soft rubber block (501) is fixedly connected between the top end of the piston frame (5) and the top end of the first inner groove (401), and the inner side of the second inner groove (402) is vertically and slidably connected with a stop block (7).
  4. 4. The flow limiting device for uniform water distribution of the cooling tower according to claim 3, wherein a lever (6) is rotatably connected between the front inner side wall and the rear inner side wall of the second inner groove (402), the left end of the lever (6) is in contact with the piston frame (5), the right end of the lever (6) is in contact with a stop block (7) below, a first spring (601) is fixedly connected between the lever (6) and the inner side wall of the second inner groove (402), and a second spring (701) is fixedly connected between the stop block (7) and the inner side wall of the second inner groove (402).
  5. 5. The flow limiting device for uniform water distribution of the cooling tower according to claim 1, wherein the shielding assembly comprises a lifting frame (9), a floating block (11) is fixedly connected to the bottom of the lifting frame (9), a sealing strip (10) is arranged at the edge of the left end of the lifting frame (9), the left end of the lifting frame (9) is attached to the inner side wall of a water storage bin (8), two sliding rods (801) are fixedly connected between the upper inner side wall and the lower inner side wall of the water storage bin (8), air holes (802) are formed in the top end of the water storage bin (8), the sliding rods (801) penetrate through the lifting frame (9) and are in sliding connection with the lifting frame (9), and the communicating position of the water diversion pipe (3) and the water storage bin (8) is located on a lifting path at the left end of the lifting frame (9).
  6. 6. The flow limiting device for uniform water distribution of the cooling tower according to claim 1, wherein the lifting assembly comprises a conical valve block (14), an extrusion groove (141) is formed in the bottom of the conical valve block (14), a supporting rod (15) is fixedly connected to the center of the bottom of the inner side of the vertical cylinder (12), the top end of the supporting rod (15) is located on the inner side of the extrusion groove (141), and the supporting rod (15) is in sliding connection with the conical valve block (14).
  7. 7. The flow limiting device for uniform water distribution of the cooling tower according to claim 6, wherein an air vent groove (151) is formed in the inner side of the supporting rod (15), a third spring (152) is fixedly connected between the top end of the supporting rod (15) and the inner side top end of the extrusion groove (141), three fourth springs (153) are fixedly connected to the top end edge of the supporting rod (15) in a circumferential array, and the top ends of the fourth springs (153) are fixedly connected with the extrusion ring (154).
  8. 8. The flow limiting device for uniform water distribution of the cooling tower according to claim 6, wherein the inner side wall of the vertical cylinder (12) right above the conical valve block (14) is fixedly connected with a spiral blade (13), and a plurality of spraying holes (16) are formed in the bottom of the vertical cylinder (12).

Description

Flow limiting device for uniform water distribution of cooling tower Technical Field The invention relates to the technical field of cooling tower water distribution, in particular to a flow limiting device for uniform water distribution of a cooling tower. Background The water distribution system of the cooling tower is used as a core component of the cooling tower, the water distribution uniformity of the water distribution system is a key factor for determining the heat exchange efficiency, and only the circulating water uniformly covers the surface of the filler, so that the gas-liquid contact area can be maximized, the efficient heat transfer is promoted, and the heat dissipation bottleneck caused by excessive water accumulation or a local filler dry area is avoided. In the water distribution system of the current cooling tower, the flow of the water distribution pipeline is easily influenced by factors such as fluctuation of water supply pressure, change of water flow rate and the like, so that water is not supplied to each water distribution pipeline uniformly. When the water supply pressure rises and the flow speed is accelerated, the flow overload can occur to part of the water diversion pipes, and part of the pipelines are insufficient in water supply due to uneven pressure distribution, so that the circulating water can not be uniformly conveyed to each water storage bin. The method not only causes excessive local wetting of the surface of the filler or dry area, reduces the heat exchange efficiency, but also can aggravate the pipeline loss due to uneven water flow impact, and affects the overall operation stability of the cooling tower. Disclosure of Invention The invention aims to provide a flow limiting device for uniform water distribution of a cooling tower, which solves the problems that the water distribution system of the current cooling tower provided in the background art is easily influenced by factors such as fluctuation of water supply pressure, change of water flow rate and the like, so that water supply of each water distribution pipe is uneven, local excessive wetting or dry areas on the surface of a filler are caused, heat exchange efficiency is reduced, pipeline loss is aggravated due to uneven water flow impact, and the overall operation stability of the cooling tower is influenced. The invention provides a flow limiting device for uniform water distribution of a cooling tower, which comprises a water diversion bin, wherein the lower end of the side wall of the water diversion bin is provided with a plurality of water diversion pipes in a circumferential array and respectively communicated with the water diversion pipes, the top ends of the water diversion pipes are provided with flow limiting frames, the inner sides of the flow limiting frames are provided with flow limiting assemblies, and the flow limiting assemblies comprise piston frames and stop blocks and are used for controlling the water supply flow; The other end of the water diversion pipe is communicated with the water storage bin, a shielding component is arranged on the inner side of the water storage bin and used for controlling the water level in the water storage bin, a vertical cylinder is arranged at the bottom of the water storage bin, and a lifting component is arranged on the inner side of the vertical cylinder and used for controlling the spraying speed and flow. In the technical scheme, when the water supply pressure is increased and the flow speed is accelerated, part of water flow enters the first inner groove to push the piston frame to move upwards, the stop block is driven to extend through lever transmission, part of the water supply channel of the water diversion bin is automatically shielded, the suppression when the flow overload is realized, and when the pressure is recovered to be normal, the soft rubber block and the spring drive all parts to reset, so that the basic water supply flow is ensured, and the water distribution uniformity and the system operation stability are improved. Preferably, the inner side of the flow limiting frame is provided with a first inner groove and a second inner groove, the first inner groove and the second inner groove are communicated with each other, and the bottoms of the first inner groove and the second inner groove are communicated with the water distribution pipe. In practical application, the double-groove communication can enable the internal components to form linkage, so that timeliness of the flow-limiting reaction is guaranteed, a stable channel is provided for pressure conduction, and continuity of flow control is improved. Preferably, the inner side of the first inner groove is vertically and slidably connected with a piston frame, a soft rubber block is fixedly connected between the top end of the piston frame and the top end of the first inner groove, and the inner side of the second inner groove is vertically and slidably connected with a stop b