Online dosing pre-filming device of circulating water system

Abstract

The utility model discloses an online dosing pre-filming device of a circulating water system, which comprises a cooling tower, a circulating water pool, a circulating water pump I, a group of heat exchange equipment I, a foldable canvas water tank, a circulating water pump II and heat exchange equipment II. A first water hose on the top of the foldable canvas water tank is connected with a second circulating water return pipeline through a customized connector, and a second water hose on the side of the foldable canvas water tank is connected with a pipeline at a water inlet of a second circulating water pump through a customized connector. And the material which is foldable, reusable, convenient to transport and install and low in price is adopted, so that the loss of parking pre-filming of a project is greatly reduced, and the water-saving value and the economic benefit are very obvious.

Description

Technical Field

[0001] The utility model relates to the field of environmental protection water treatment, and particularly relates to an online dosing pre-filming device for a circulating water system. Background Art

[0002] For a newly built or rebuilt circulating water system, it is necessary to dose and pre-film the circulating water pipeline and the circulating water tank before starting up. The conventional method is to connect the end of the circulating water supply and the beginning of the return water with a pipeline, fill the circulating water tank and the pipeline with water, start the circulating water pump, first clean the pipeline such as rust removal and dirt removal, and then add pre-film agent and hang test pieces into the circulating water tank, etc., so that the system circulates and operates, and at the same time, tests and monitoring are carried out. Through the above steps, a protective film can be effectively formed in the circulating water system, improving the corrosion resistance and service life of the system.

[0003] However, a large amount of garbage will be deposited in the circulating water tank by this method, and the rust water and the agent will also affect the quality of the circulating water. After the pre-filming is completed, the water in the tank needs to be drained and cleaned, which is a huge workload and does not conform to the principle of water conservation in the project. Moreover, this method must be carried out when all heat exchange equipment is stopped, resulting in huge economic losses.

[0004] And in actual engineering, it often happens that new heat exchange equipment and circulating water pumps need to be added locally, while the circulating water tank and the cooling tower have sufficient capacity or can be shared intermittently during a certain period, and the whole plant circulating water system on which it depends cannot be stopped. There is no suitable operation plan for dosing and pre-filming before starting up the new system, which causes great confusion to the project construction. There is an urgent need to study a device for online dosing and pre-filming of the old and new circulating water systems suitable for sharing a water tank to meet the requirements of smooth project progress. Summary of the Utility Model

[0005] In view of the problems existing in the prior art, the purpose of the utility model is to provide an online dosing pre-filming device for a circulating water system, so that the new circulating water pipeline can be dosed and pre-filmed without stopping the old system, and the water tank and the circulating water pipeline of the old system are not polluted.

[0006] To achieve the above purpose, the technical solution of the utility model is as follows:

[0007] An on-line dosing pre-filming device for a circulating water system, comprising a cooling tower, a circulating water tank, a first circulating water pump and a group of first heat exchange devices. The circulating water tank is located below the cooling tower. The water outlet one at the lower part of the circulating water tank is connected to the water inlet of the first circulating water pump through a pipeline. The water outlet of the first circulating water pump is connected to the water inlet of the first heat exchange device through a first circulating water supply pipeline. The water outlet of the first heat exchange device is connected to the water inlet at the upper part of the cooling tower through a first circulating water return pipeline. It further comprises a foldable canvas water tank, a second circulating water pump and a second heat exchange device. The water outlet two at the lower part of the circulating water tank is connected to the water inlet of the second circulating water pump through a pipeline. The water outlet of the second circulating water pump is connected to the water inlet of the second heat exchange device through a second circulating water supply pipeline. The water outlet of the second heat exchange device is connected to the water inlet at the upper part of the cooling tower through a second circulating water return pipeline. The first water belt at the top of the foldable canvas water tank is connected to the second circulating water return pipeline through a customized joint, and the second water belt at its side is connected to the pipeline at the water inlet of the second circulating water pump through a customized joint.

[0008] Further, the foldable canvas water tank consists of a frame and a canvas main body. The frame is a cuboid structure composed of a group of galvanized steel pipes and a group of stainless steel right-angle tees, and the canvas main body is fixed on the frame.

[0009] Further, a stainless steel basket-type filter element is provided at the water inlet at the top of the foldable canvas water tank; rust pieces and new carbon steel coupon pieces are suspended at the edge of the foldable canvas water tank.

[0010] Further, the customized joint comprises a main plastic pipe, and a first branch plastic pipe and a second branch plastic pipe are respectively arranged at the upper and lower positions in the middle of the main plastic pipe, forming a four-way joint.

[0011] Further, corresponding flanges and end caps are configured at the four interfaces of the customized joint.

[0012] Further, the diameters of the main plastic pipe corresponding to two interfaces are 600 mm, and the diameters of the interfaces corresponding to the first branch plastic pipe and the second branch plastic pipe are 150 mm and 300 mm respectively.

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

[0014] 1) By adopting the technical solution of the present utility model, a foldable canvas water tank is arranged beside the existing circulating water system. The water hose 1 at the top of the foldable canvas water tank is connected to the circulating water return pipe 2 through a customized joint, and the water hose 2 at its side is connected to the pipe at the water inlet of the circulating water pump 2 through a customized joint. Without stopping the old system, dosing pre-filming is carried out on the newly built circulating water pipeline, without polluting the pool and circulating water pipeline of the old system. Moreover, materials that are foldable, reusable, convenient for transportation and installation, and low in price are adopted, greatly reducing the losses caused by the need to stop the project for pre-filming, and having very obvious water-saving value and economic benefits;

[0015] 2) Through a specially customized conversion joint, the present utility model makes this device applicable to online dosing pre-filming of circulating water systems of various specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the device of the present utility model;

[0017] Figure 2 It is a schematic structural diagram of the foldable canvas water tank of the present utility model;

[0018] Figure 3 It is a schematic diagram of the frame structure of the foldable canvas water tank of the present utility model.

[0019] Figure 4 It is a schematic structural diagram of the customized conversion joint of the present utility model.

[0020] In the figure: 1, cooling tower; 2, circulating water pool; 3, circulating water pump 1; 4, heat exchange equipment 1; 5, foldable canvas water tank; 6, stainless steel basket type filter element; 7, circulating water pump 2; 8, heat exchange equipment 2; 9, frame; 10, main plastic pipe; 11, branch plastic pipe 1; 12, branch plastic pipe 2; 13, customized joint; 14, galvanized steel pipe; 15, stainless steel right angle tee. DETAILED DESCRIPTION OF THE INVENTION

[0021] The present utility model will be further described below in conjunction with the accompanying drawings, but the scope protected by the present utility model is not limited to the described scope.

[0022] As Figure 1 shown, an online dosing pre-filming device for a circulating water system includes a cooling tower 1, a circulating water pool 2, a circulating water pump 1 3 and a group of heat exchange equipment 1 4. The circulating water pool 2 is located below the cooling tower 1. The water outlet 1 at the lower part of the circulating water pool 2 is connected to the water inlet of the circulating water pump 1 3 through a pipe. The water outlet of the circulating water pump 1 3 is connected to the water inlet of the heat exchange equipment 1 4 through a circulating water supply pipe 1. The water outlet of the heat exchange equipment 1 4 is connected to the water inlet at the upper part of the cooling tower 1 through a circulating water return pipe 1.

[0023] An on-line dosing pre-filming device for a circulating water system further includes a collapsible canvas water tank 5, a second circulating water pump 7, and a second heat exchange device 8. The second water outlet at the lower part of the circulating water tank 2 is connected to the water inlet of the second circulating water pump 7 through a pipeline. The water outlet of the second circulating water pump 7 is connected to the water inlet of the second heat exchange device 8 through a second circulating water supply pipeline. The water outlet of the second heat exchange device 8 is connected to the water inlet at the upper part of the cooling tower 1 through a second circulating water return pipeline. The first water belt at the top of the collapsible canvas water tank 5 is connected to the second circulating water return pipeline through a customized joint 13, and the second water belt at its side is connected to the pipeline at the water inlet of the second circulating water pump 7 through a customized joint 13.

[0024] By arranging a collapsible canvas water tank 5 beside the existing circulating water system, the first water belt at the top of the collapsible canvas water tank 5 is connected to the second circulating water return pipeline through a customized joint 13, and the second water belt at its side is connected to the pipeline at the water inlet of the second circulating water pump through a customized joint. Without stopping the old system, dosing pre-filming is carried out on the newly built circulating water pipeline, without polluting the water tank and circulating water pipeline of the old system. Moreover, materials that are collapsible, reusable, convenient for transportation and installation, and inexpensive are adopted, greatly reducing the losses caused by the need to stop the project for pre-filming, and having very obvious water-saving value and economic benefits.

[0025] As Figures 2-3 shown, the collapsible canvas water tank 5 consists of a frame 9 and a canvas main body. The frame 9 is a cuboid structure composed of a group of galvanized steel pipes 14 and a group of stainless steel right-angle tee joints 15. The canvas main body is fixed on the frame 9, which is convenient for transportation and installation. The material of the canvas main body is PVC-coated fabric, with specific waterproof effects. Rust pieces and new carbon steel hanging pieces are suspended at the edge of the collapsible canvas water tank 5, and the rust pieces and new carbon steel hanging pieces need to be immersed in water.

[0026] A stainless steel basket-type filter element 6 is provided at the water inlet at the top of the collapsible canvas water tank 5 for convenient filtration.

[0027] As Figure 4 shown, the customized joint 8 includes a main plastic pipe 10. A first branch plastic pipe 11 and a second branch plastic pipe 12 are respectively arranged above and below the middle position of the main plastic pipe 10, forming a four-way joint.

[0028] Flanges and end caps are configured at the four interfaces of the customized joint 8.

[0029] The diameters of the main plastic pipe 10 corresponding to two interfaces are 600 mm, and the diameters of the interfaces corresponding to the first branch plastic pipe 11 and the second branch plastic pipe 12 are 150 mm and 300 mm respectively.

[0030] In this embodiment, the diameter of the first water belt is 600 mm, and the diameter of the second water belt is 600 mm.

[0031] For a small water circulation system, select two interfaces corresponding to the 150 mm diameter interface and the main plastic pipe 10; for a water circulation system with a relatively large water volume, select two interfaces corresponding to the 300 mm diameter interface and the main plastic pipe 10.

[0032] Fill the foldable canvas water tank 5 with water so that the entire circulating water pipeline, water tank, and water belt that need pre-filming are filled with water. Start the second circulating water pump 7, add chemical agents for chemical cleaning to ensure that impurities and dirt in the pipeline are completely removed. After the cleaning is completed, remove the stainless steel basket-type filter element 6. Add pre-film agent and other required drugs to the pool, keep the system running in circulation, and ensure that the pre-film agent is evenly distributed and fully reacts in the pipeline. During the pre-filming process, it is necessary to regularly test and monitor the system. If the pre-filming of the circulating water is successful, after the operation is completed, rub the rusty iron sheet with your finger. If there is no obvious rust mark on your finger, it means the cleaning is thorough. Remove the carbon steel coupon, and if you can see the colorful iris on the coupon, it means the pre-filming effect is obvious and the pre-filming is successful this time.

Claims

1. An online dosing pre-filming device for a circulating water system, comprising a cooling tower (1), a circulating water pool (2), a circulating water pump (3) and a set of heat exchange equipment (4), wherein the circulating water pool (2) is located below the cooling tower (1), a water outlet (1) at the bottom of the circulating water pool (2) is connected to a water inlet of a circulating water pump (3) via a pipeline, a water outlet of the circulating water pump (3) is connected to a water inlet of a heat exchange equipment (4) via a circulating water supply pipeline (1), and a water outlet of the heat exchange equipment (4) is connected to a water inlet at the top of the cooling tower (1) via a circulating water return pipeline (1), characterized in that It also includes a foldable canvas water tank (5), a circulating water pump (2) and a heat exchange device (2). The water outlet (2) at the bottom of the circulating water tank (2) is connected to the water inlet of the circulating water pump (2) via a pipeline. The water outlet of the circulating water pump (2) is connected to the water inlet of the heat exchange device (2) via a circulating water supply pipeline (2). The water outlet of the heat exchange device (2) is connected to the water inlet of the upper part of the cooling tower (1) via a circulating water return pipeline (2). The water belt (1) at the top of the foldable canvas water tank (5) is connected to the circulating water return pipeline (2) via a customized joint (13). The water belt (2) at the side is connected to the pipeline at the water inlet of the circulating water pump (2) via a customized joint (13).

2. The online dosing pre-filming device for a circulating water system according to claim 1 is characterized in that The foldable canvas water tank (5) comprises a frame (9) and a canvas body. The frame (9) is a rectangular parallelepiped structure composed of a group of galvanized steel pipes (14) and a group of stainless steel right-angle tees (15). The canvas body is fixed on the frame (9).

3. The online dosing pre-filming device for a circulating water system according to claim 1 is characterized in that A stainless steel basket-type filter element (6) is provided at the water inlet on the top of the foldable canvas water tank (5); rust sheets and new carbon steel hanging sheets are hung on the edge of the foldable canvas water tank (5).

4. The online dosing pre-filming device for a circulating water system according to claim 1 is characterized in that The custom joint (13) comprises a main plastic pipe (10), with a first sub-plastic pipe (11) and a second sub-plastic pipe (12) respectively provided at upper and lower positions in the middle of the main plastic pipe (10), forming a four-way joint.

5. The online dosing pre-filming device for a circulating water system according to claim 4 is characterized in that The four interfaces of the custom joint (13) are all configured with corresponding flanges and heads.

6. The online dosing pre-filming device for a circulating water system according to claim 4 is characterized in that The diameters of the two interfaces corresponding to the main plastic pipe (10) are 600 mm, and the diameters of the interfaces corresponding to the branch plastic pipe 1 (11) and the branch plastic pipe 2 (12) are 150 mm and 300 mm respectively.

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