Efficient and energy-saving rotational flow well lift pump system

Abstract

The utility model discloses an efficient and energy-saving rotational flow well lift pump system, which belongs to the technical field of rotational flow well water supply and comprises a main pipeline and three groups of branch pipelines communicated with the main pipeline. The water inlet end of each branch pipeline is provided with a lifting pump set, and the three lifting pump sets communicate with the main pipeline through the branch pipelines and are arranged in parallel. One lifting pump set is provided with a submersible pump assembly; the lifting pump set comprises a water inlet pipeline, an efficient vertical pipeline pump, a water pre-diversion assembly and a water outlet pipeline. By means of the mode, the two low supply pump sets and the high supply pump set are connected in parallel to supply water, water diversion operation before the efficient vertical type pipeline pump is started is completed in advance through the water diversion tank, and the water supply amount of a system in a main pipeline is adjusted in time; when production needing larger water supply is carried out in a workshop, the efficient submersible pump of the high-supply pump set is temporarily started, a standby pump is reserved in the system, and therefore the water supply system has the advantages of being high in stability and efficiency, short in water supply time and capable of saving energy consumption.

Description

[Technical field]

[0001] The utility model relates to the technical field of vortex well water supply, in particular to a high-efficiency and energy-saving vortex well lifting pump system. [Background Technology]

[0002] The swirl well lift pump plays a crucial role in the closed-loop circulating water system of steelmaking. Throughout the entire steelmaking closed-loop circulating water system process, the turbid water from the workshop casting machines, rolling mill equipment, and production line roller billets must flow into the swirl well to precipitate the turbid water containing iron oxide scale. The main function of the swirl well lift pump is to transport and lift the turbid water, which has been free of iron oxide scale, to the turbid water cooling tank in the main pump room. Currently, in industrial circulating cooling water systems, swirl well lift pumps are generally self-priming pumps. However, these self-priming swirl well lift pumps have the following problems:

[0003] 1. Because the steelmaking turbid circulating water system is affected by the specifications of the produced steel billets, the water volume in the system varies greatly. Currently, the vortex well is unable to achieve timely and effective system water volume adjustment, increasing the risk factor of the system being unable to activate the water pump equipment in time when the water delivery volume is urgently needed to be increased, affecting the normal production rhythm.

[0004] 2. Due to structural limitations, the self-priming pump can only adopt an open flow channel layout (no flow channel, only two volume chambers). Due to the unreasonable open flow channel layout, the hydraulic performance of the impeller is greatly reduced, and the performance is seriously inconsistent with the theoretical conversion; the unit efficiency is very low, and the actual measured efficiency of the real machine is only 10%-40%, with an average of less than 30%, which is a serious energy consumption.

[0005] 3. The self-priming pump has a gas-liquid separation process, and it cannot discharge water immediately after startup, which increases the risk factor of not being able to start the equipment in time.

[0006] 4. The switching valve at the inlet pipe of the self-priming pump is not tightly closed and is easily damaged, making the self-priming pump unable to self-prime.

[0007] 5. After starting, due to the long self-priming time, it cannot quickly reach the normal working state, affecting the normal production rhythm.

[0008] In response to the problems of existing vortex well lifting pumps requiring frequent start and stop or frequent adjustment of the water outlet valve opening to increase equipment performance, and the general stability, low efficiency, long water filling time and serious energy consumption of self-priming pump equipment, our company has developed a high-efficiency and energy-saving vortex well lifting pump system to solve the above problems. [Utility Model Content]

[0009] In view of the above-mentioned shortcomings of the prior art, the utility model provides a high-efficiency and energy-saving vortex well lifting pump system.

[0010] To achieve the above purpose, a high-efficiency and energy-saving vortex well lifting pump system is designed, which includes a main pipeline and three groups of branch pipelines connected to the main pipeline;

[0011] A lifting pump set is installed at the water inlet end of each branch pipe. The three lifting pump sets are connected to the main pipe through the branch pipes and are arranged in parallel; one of the lifting pump sets is equipped with a submersible pump assembly;

[0012] The lifting pump group includes an inlet pipeline, a high-efficiency vertical pipeline pump, a pre-water diversion component and an outlet pipeline. The inlet end of the high-efficiency vertical pipeline pump is connected to the outlet end of the inlet pipeline, and the inlet end of the inlet pipeline extends into the vortex well suction tank; the outlet end of the high-efficiency vertical pipeline pump is connected to the inlet end of the outlet pipeline, and the outlet end of the outlet pipeline is connected to the branch pipeline; a pre-water diversion component is provided on the outlet pipeline.

[0013] Furthermore, the pre-water diversion assembly includes a high-efficiency motor vacuum pump, a water diversion tank, and a water diversion pipe. The water inlet end of the high-efficiency motor vacuum pump is connected to the water outlet end of the water diversion tank, the water outlet end of the high-efficiency motor vacuum pump is connected to the water inlet end of the high-efficiency vertical pipeline pump, and the water inlet end of the water diversion tank is provided with a water diversion pipe for supplying water to the water diversion tank.

[0014] Furthermore, the submersible pump assembly includes a high-efficiency submersible pump and an auxiliary pipeline. The high-efficiency submersible pump is located in the vortex well suction tank. The water inlet end of the auxiliary pipeline is connected to the water outlet end of the high-efficiency submersible pump, and the water outlet end of the auxiliary pipeline is connected to the branch pipeline.

[0015] Furthermore, the outer cover of the high-efficiency submersible pump is provided with a fully enclosed mesh cover.

[0016] Furthermore, the mesh cover is made of plastic.

[0017] Furthermore, the water outlet pipeline and the auxiliary pipeline are both composed of a water outlet valve and a pipe.

[0018] Furthermore, the water outlet valve adopts a ball valve.

[0019] Compared with the prior art, the utility model adopts two groups of low-supply pump groups and one group of high-supply pump groups to supply water in parallel, and completes the water diversion operation before the high-efficiency vertical pipeline pump is started in advance through the water diversion tank, so as to realize timely adjustment of the water supply of the system in the main pipeline; when production requiring a larger water supply is carried out in the workshop, the high-efficiency submersible pump of the high-supply pump group is temporarily activated. Due to the working characteristics of the submersible pump, there is no need to perform other operations such as filling the equipment with water. The system can respond quickly to meet the water delivery requirements, and the system reserves the high-efficiency vertical pipeline pump of the high-supply pump group for backup, which not only meets the energy-saving needs of the system, but also greatly improves the safe use of the system, thereby having the advantages of high stability, high efficiency, short water supply time and energy saving. [Brief Description of the Drawings]

[0020] Figure 1 This is a structural diagram of a high-efficiency and energy-saving vortex well lift pump system of the utility model;

[0021] Figure 2 This is a structural diagram of the high-supply pump group of the utility model;

[0022] Figure 3 For the existing self-priming pump type swirl well lifting pump system;

[0023] In the figure: 1. Main pipeline; 2. Branch pipeline; 3. Lifting pump group; 31. Water inlet pipeline; 32. High-efficiency vertical pipeline pump; 33. High-efficiency motor vacuum pump; 34. Water diversion tank; 35. Water diversion pipe; 36. Water outlet pipeline; 4. Submersible pump assembly; 41. High-efficiency submersible pump; 42. Auxiliary pipeline. [Specific implementation method]

[0024] The present invention is further described below with reference to the accompanying drawings:

[0025] Example 1: In some embodiments, please refer to the accompanying drawings of the specification. Figure 1-Figure 3 , a high-efficiency and energy-saving vortex well lifting pump system, comprising a main pipeline 1 and three groups of branch pipelines 2 connected to the main pipeline 1;

[0026] A lift pump group 3 is installed at the water inlet end of each branch pipe 2. The three lift pump groups 3 are connected to the main pipe 1 through the branch pipes 2 and are arranged in parallel. One of the lift pump groups 3 is provided with a submersible pump assembly 4, which is collectively referred to as the high-supply pump group below, and the other two groups are collectively referred to as the low-supply pump groups below.

[0027] The lifting pump group 3 includes a water inlet pipeline 31, a high-efficiency vertical pipeline pump 32, a high-efficiency motor vacuum pump 33, a water diversion tank 34, a water diversion pipe 35 and a water outlet pipeline 36. The water inlet end of the high-efficiency vertical pipeline pump 32 is connected to the water outlet end of the water inlet pipeline 31, and the water inlet end of the water inlet pipeline 31 extends into the vortex well suction tank; the water outlet end of the high-efficiency vertical pipeline pump 32 is connected to the water inlet end of the water outlet pipeline 36, and the water outlet end of the water outlet pipeline 36 is connected to the branch pipeline 2;

[0028] The water inlet of the high-efficiency motor vacuum pump 33 is connected to the water outlet of the water diversion tank 34, and the water outlet of the high-efficiency motor vacuum pump 33 is connected to the water inlet of the high-efficiency vertical pipeline pump 32. The water inlet of the water diversion tank 34 is provided with a water diversion pipe 35 for supplying water to the water diversion tank 34;

[0029] Before the high-efficiency vertical pipeline pump 32 is started for the first time, the high-efficiency motor vacuum pump 33 is first started to fill the high-efficiency vertical pipeline pump 32 with water. As the amount of water in the water diversion system increases, when the water fills the high-efficiency vertical pipeline pump 32 and the water inlet pipeline 31, the high-efficiency vertical pipeline pump 32 will complete the water diversion operation before starting in advance, thereby realizing timely adjustment of the system water supply in the main pipeline 1;

[0030] The submersible pump assembly 4 includes a high-efficiency submersible pump 41 and an auxiliary pipeline 42. The high-efficiency submersible pump 41 is located in the vortex well suction tank. The water inlet end of the auxiliary pipeline 42 is connected to the water outlet end of the high-efficiency submersible pump 41, and the water outlet end of the auxiliary pipeline 42 is connected to the branch pipeline 2.

[0031] The outer cover of the high-efficiency submersible pump 41 is provided with a fully enclosed mesh cover, and the mesh cover is made of plastic material to increase durability in the vortex well suction tank.

[0032] The water outlet pipeline 36 and the auxiliary pipeline 42 are both composed of a water outlet ball valve and a pipeline.

[0033] In some embodiments, the vortex well lifting pump system of a steel mill wire rod workshop has three pumps, two of which are directly used and the remaining pump is a standby. The wire rod workshop can produce φ6, φ8, and φ12 specification wire rods. When the workshop produces φ6 specification wire rods, the turbidity loop system needs to transport 1800m3 of water. 3 / h; when producing φ8 specification wire, the turbidity ring system needs to transport 2000m3 of water 3 / h; when producing φ12 specification wire, the turbidity ring system needs to transport 2400m3 of water 3 / h, the system usually runs two self-priming pumps, and the maximum actual water output can reach 2200m3 when the outlet valve is fully open. 3 / h. When the workshop produces φ6 specification wire rod, it is necessary to close some outlet valves and control the water delivery volume at 1800m 3 / h. When producing φ8 specification wire, it is necessary to open the outlet valve to make the water delivery volume at 2000m 3 / h. Due to the production of φ12 specification wire rod, the maximum water delivery of the two pumps cannot meet the water demand, so it is necessary to temporarily open the third pump and control the opening of the outlet valve to make the water delivery volume at 2400m 3 / h. After on-site testing, the system unit operating efficiency is only about 35%, and there is huge potential for energy-saving transformation. In addition, three self-priming pumps are turned on at the same time, leaving the system without a backup pump, affecting production safety.

[0034] After using the high-efficiency and energy-saving vortex well lifting pump system of the utility model, the two low-supply pump groups are normally activated, and the water delivery capacity of the two high-efficiency vertical pipeline pumps 32 of the two low-supply pump groups can reach 1800m 3 / h, the system unit operating efficiency can reach about 75%. When the workshop needs to switch to producing φ8 or φ12 specification wire rods according to market requirements, the high-efficiency submersible pump 41 of the high-supply pump group is temporarily activated. Due to the working characteristics of the submersible pump, there is no need to perform other operations such as filling the equipment with water. The system can respond quickly to meet the water delivery requirements, and the system reserves the high-efficiency vertical pipeline pump 32 of the high-supply pump group for backup, which not only meets the system's energy-saving needs, but also greatly improves the system's safe use.

[0035] The contents not described in detail in this specification belong to the existing technology known to professional and technical personnel in this field. The standard parts used can be purchased from the market, and special-shaped parts can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt mature conventional means such as bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the circuit connections adopt conventional connection methods in the existing technology, which will not be described in detail here.

[0036] The present invention is not limited to the above-mentioned embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be considered as equivalent replacement methods and are included in the scope of protection of the present invention.

Claims

1. A high-efficiency and energy-saving vortex well lift pump system, comprising a main pipeline (1) and three groups of branch pipelines (2) connected to the main pipeline (1), characterized in that: A lifting pump group (3) is installed at the water inlet end of each branch pipe (2), and the three lifting pump groups (3) are connected to the main pipe (1) through the branch pipes (2) and are arranged in parallel; one of the lifting pump groups (3) is provided with a submersible pump assembly (4); The lifting pump group (3) comprises a water inlet pipeline (31), a high-efficiency vertical pipeline pump (32), a pre-water induction component and a water outlet pipeline (36); the water inlet end of the high-efficiency vertical pipeline pump (32) is connected to the water outlet end of the water inlet pipeline (31), and the water inlet end of the water inlet pipeline (31) extends into the vortex well water absorption pool; the water outlet end of the high-efficiency vertical pipeline pump (32) is connected to the water inlet end of the water outlet pipeline (36), and the water outlet end of the water outlet pipeline (36) is connected to the branch pipeline (2); and the pre-water induction component is provided on the water outlet pipeline (36).

2. The high-efficiency and energy-saving vortex well lift pump system according to claim 1 is characterized in that: The pre-water diversion assembly comprises a high-efficiency motor vacuum pump (33), a water diversion tank (34) and a water diversion pipe (35); the water inlet end of the high-efficiency motor vacuum pump (33) is connected to the water outlet end of the water diversion tank (34); the water outlet end of the high-efficiency motor vacuum pump (33) is communicated with the water inlet end of the high-efficiency vertical pipeline pump (32); and the water inlet end of the water diversion tank (34) is provided with a water diversion pipe (35) for supplying water to the water diversion tank (34).

3. The high-efficiency and energy-saving vortex well lift pump system according to claim 1 is characterized in that: The submersible pump assembly (4) comprises a high-efficiency submersible pump (41) and an auxiliary pipeline (42). The high-efficiency submersible pump (41) is located in the vortex well suction tank. The water inlet end of the auxiliary pipeline (42) is connected to the water outlet end of the high-efficiency submersible pump (41), and the water outlet end of the auxiliary pipeline (42) is connected to the branch pipeline (2).

4. The high-efficiency and energy-saving vortex well lift pump system according to claim 3 is characterized in that: The outer cover of the high-efficiency submersible pump (41) is provided with a fully enclosed mesh cover.

5. The high-efficiency and energy-saving vortex well lift pump system according to claim 4 is characterized in that: The grille is made of plastic.

6. The high-efficiency and energy-saving vortex well lift pump system according to claim 3 is characterized in that: The water outlet pipeline (36) and the auxiliary pipeline (42) are both composed of a water outlet valve and a pipeline.

7. The high-efficiency and energy-saving vortex well lift pump system according to claim 6, characterized in that: The water outlet valve adopts a ball valve.

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