Split type detachable flow guide cover of deep well submersible pump

Abstract

The utility model discloses a split type detachable flow guide cover of a deep well submersible pump, which comprises a flow guide cover formed by combining two semi-closed pipes into a whole, two flanges respectively connected to one ends of the two semi-closed pipes, a sealing clamping plate positioned at the joint of the two semi-closed pipes, and a first bolt for connecting the two semi-closed pipes into a whole, the joint of the two semi-closed pipes extends outwards in the radial direction to form installation outer eave edges, a plurality of first through holes are formed in the outer eave edges, a cable threading hole is formed in the connecting position of the two flanges, and the cable threading hole is located above a water pump cable threading position reserved at the connecting position of the two outer eave edges. And sealing strips are respectively arranged on the contact surface sides of the sealing clamping plate and the two outer eave edges. The flow guide cover can be disassembled underground to overhaul and maintain the pump body and the motor, the operation intensity of operators is reduced, the working efficiency is improved, and meanwhile the operation and maintenance cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of deep-well submersible pumps, and particularly relates to a split and detachable guide cover for a deep-well submersible pump. Background Technique

[0002] With the implementation of the "dual carbon" goals of carbon peak and carbon neutrality, China has accelerated the construction of a new power system, and the construction of pumped-storage power stations has developed rapidly. Most of the existing and under-construction pumped-storage power stations do not have self-flow drainage tunnels, and the surrounding rock seepage water and equipment drainage water in the power house must be discharged from the chamber through deep-well submersible pumps placed in the sump.

[0003] The guide cover is a guide device covering the outside of the pump body of the deep-well submersible pump, which guides the water flow inhaled by the pump body, can take away the heat generated by the operation of the motor, and enhance the heat dissipation effect of the motor; at the same time, it makes the water flow state at the pump inlet better, reduces the hydraulic loss, and improves the pump operation efficiency. The existing guide covers of deep-well submersible pumps are all integrated. The pump impeller and the motor are both placed in a sump more than ten meters deep, and the cable passes through the cable hole at the upper end of the guide cover. When the pump is overhauled, the pump body, the guide cover and the cable need to be lifted to the sump cover platform together, which is too heavy and difficult to operate and maintain. Content of the Utility Model

[0004] Aiming at the problems existing in the prior art, the utility model provides a split and detachable guide cover for a deep-well submersible pump, which is convenient for later operation and maintenance management, greatly reduces the operation intensity of operators, improves work efficiency, and reduces operation and maintenance costs at the same time.

[0005] The utility model is realized as follows: A split and detachable guide cover for a deep-well submersible pump includes a guide cover formed by combining two half pipes into one body, two half flanges respectively connected to one ends of the two half pipes and capable of being combined into one body, a sealing splint located at the joint of the two half pipes, and a first bolt connecting the two half pipes into one body. The joints of the two half pipes respectively form outer eaves along the radial extension, and a plurality of first through holes are opened on the outer eaves. The sealing splint placed at the connection of the two outer eaves is strip-shaped, and its radial length is less than the length of the outer eaves, leaving a position for the pump cable to pass through. A cable passing hole is provided at the connection of the two half flanges, and the cable passing hole is located above the cable passing position of the pump cable at the connection of the two outer eaves. First sealing strips are respectively arranged on the contact surfaces of the sealing splint and the two outer eaves. Second through holes corresponding to the first through holes on the outer eaves are arranged on the sealing splint. The first bolt passes through the first through hole and the second through hole to fix the two half pipes and the sealing splint, so that the two half pipes are combined into one body.

[0006] A plurality of limiting columns are respectively fixed on both sides of the sealing splint in contact with the outer eaves, and limiting holes matching the limiting columns are opened at corresponding positions on the contact surface of the outer eaves. The size of the limiting holes is the same as the size of the limiting columns, so that the limiting columns can just be inserted into the limiting holes.

[0007] The limiting holes and the limiting posts are respectively three in number, and are evenly distributed along the height directions of the outer eaves edge and the sealing splint.

[0008] The cross-sections of the limiting holes and the limiting posts are square.

[0009] One ends of the two half pipes are welded and connected to the two split flanges. A second sealing strip is arranged between the two split flanges, and the two split flanges and the fixed flange on the pump body are connected by second bolts.

[0010] The advantages and technical effects of the present utility model are as follows: By connecting the two half pipes with bolts, when the pump body needs to be repaired and maintained, only the bolts of the upper flange on the half pipe and the connection bolts of the half pipes need to be loosened, and then the disassembly of the flow guide cover underground for repairing and maintaining the pump body and the motor can be realized. It is not necessary to lift the entire water pump and the flow guide cover above the cover plate of the sump, which greatly reduces the working intensity of the operators, improves the work efficiency, and reduces the operation and maintenance cost at the same time. Brief Description of the Drawings

[0011] Figure 1 is an axonometric view of the overall structure of the split-type detachable flow guide cover of the deep-well submersible pump of the present utility model;

[0012] Figure 2 is an axonometric view of the split flange structure of the split-type detachable flow guide cover of the deep-well submersible pump of the present utility model;

[0013] Figure 3 is a partial axonometric view of the half pipe and its connection structure of the split-type detachable flow guide cover of the deep-well submersible pump of the present utility model;

[0014] Figure 4 is a partial enlarged axonometric view of the sealing splint and the sealing strip structure of the split-type detachable flow guide cover of the deep-well submersible pump of the present utility model;

[0015] Figure 5 is a partial enlarged axonometric view of the half pipe limiting hole structure of the split-type detachable flow guide cover of the deep-well submersible pump of the present utility model;

[0016] In the figure, 1 - half pipe; 11 - limiting hole; 12 - outer eaves edge; 2 - first bolt; 3 - sealing splint; 31 - first sealing strip; 32 - limiting post; 4 - split flange; 41 - cable threading hole; 42 - second sealing strip; 5 - second bolt; 6 - fixed flange. Detailed Description of the Embodiments

[0017] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below in conjunction with embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0018] In the description of the creation of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the creation of the present utility model 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. Therefore, it should not be construed as a limitation to the creation of the present utility model.

[0019] In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features.

[0020] Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the creation of the present utility model, unless otherwise stated, the meaning of "a plurality" is two or more.

[0021] In the description of the creation of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the creation of the present utility model can be understood through specific situations.

[0022] As Figure 1 —3 shows, the split-type detachable flow guide cover of the deep-well submersible pump of the present utility model includes a flow guide cover formed by combining two half pipes 1 into one body, two valve flanges 4 respectively connected to one end of the two half pipes and capable of being combined into one body, a sealing clamping plate 3 located at the joint of the two half pipes 1, and a first bolt 2 connecting the two half pipes 1 into one body. The joints of the two half pipes 1 respectively extend radially outwards to form outer eaves edges 12. A plurality of first through holes are opened on the outer eaves edges 12. The sealing clamping plate 3 placed at the connection of the two outer eaves edges 12 is strip-shaped, and its radial length is less than the length of the outer eaves edges 12, leaving a position for the water pump cable to pass through. A cable passing hole 41 is provided at the connection of the two valve flanges 4. The cable passing hole 41 is located above the water pump cable passing through at the connection of the two outer eaves edges 12. First sealing strips 31 are respectively arranged on the contact surface sides of the sealing clamping plate 3 and the two outer eaves edges 12. Second through holes corresponding to the first through holes on the outer eaves edges 12 are provided on the sealing clamping plate 3. The first bolt 2 passes through the first through holes and the second through holes to fix the two half pipes 1 and the sealing clamping plate 3, so that the two half pipes 1 are combined into one body.

[0023] A plurality of limiting posts 32 are fixed on both sides of the sealing splint 3 in contact with the outer edge 12, and limiting holes 11 matching the limiting posts 32 are opened at corresponding positions on the contact surface of the outer edge 12. The size of the limiting holes 11 is the same as that of the limiting posts 32, so that the limiting posts 32 can be just inserted into the limiting holes 11.

[0024] Preferably, there are three limiting holes 11 and three limiting columns 32 , which are evenly distributed along the height direction of the outer edge 12 and the sealing clamping plate 3 .

[0025] Preferably, the cross-sections of the limiting holes 11 and the limiting columns 32 are square.

[0026] One end of the two half-closed pipes 1 is welded to the two-flange 4 , a second sealing strip 42 is arranged between the two-flange 4 , and the two-flange 4 is connected to the fixed flange 6 on the pump body by a second bolt 5 .

[0027] Specifically, the deflector includes two half-tubes 1 and two petal flanges 4, and the upper ends of the two half-tubes 1 are fixed firmly to the corresponding petal flanges 4 by welding. Then, the two petal flanges 4, each with a half-tube 1, are pressed by the second sealing strip 42, and aligned with the bolt holes of the fixed flange 6 of the upper pump body, and the second bolts 5 are tightened to fix the deflector to the pump body, so that when the deflector is disassembled, it is only necessary to loosen the bolts of the petal flange 4, which greatly reduces the work intensity of the operators, improves work efficiency, and reduces operation and maintenance costs. In addition, a cable threading hole 41 is provided at the corresponding position on the fixed flange 6 at the junction of the petals of the petal flange 4, which can ensure that during normal operation, the waterproof cable drawn from the water pump motor can be led to the top of the water collection manhole cover through the cable threading hole 41; when the deflector is disassembled, the cable can be detached from the petal flange 4 and the deflector, thereby avoiding the restriction of the cable on the disassembly of the deflector. The two half pipes 1 are connected by a sealing clamping plate 3 using a first bolt 2 to ensure the sealing and good flow guiding effect of the air guide cover.

[0028] The specific structure of the sealing splint 3 is as follows: Figure 4 As shown, it includes six limit posts 32 at the upper, middle and lower positions on both sides and first sealing strips 31 at both sides. Six limit holes 11 are arranged at the inner side of the joint of the two half pipes 1, one at the upper, middle and lower positions, as shown in FIG. Figure 5 As shown, the distance between the limiting holes 11 in the same vertical direction is the same as the distance between the two limiting columns 32 in the same vertical direction. The limiting columns 32 on the sealing clamp are embedded in the preset limiting holes 11 on the inner sides of the two half-closed pipes, and the sealing clamp and the two half-closed pipes are pressed tightly by the first sealing strip 31, thereby ensuring the sealing of the overall structure of the air guide cover.

[0029] The split and detachable flow guide cover of the submersible deep well pump of the utility model is connected by bolts for the two half pipes. When the pump body needs to be repaired and maintained, only the bolts of the split flange above the flow guide cover and the connection bolts of the half pipes need to be loosened, and the flow guide cover can be disassembled underground to repair and maintain the pump body and the motor without lifting the whole water pump and the flow guide cover above the cover plate of the sump, which greatly reduces the working intensity of the operators, improves the working efficiency, and reduces the operation and maintenance cost at the same time.

[0030] The above is only the preferred embodiment of the utility model. It should be pointed out that for those of ordinary skill in the art of this technology, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications should also be regarded as the protection scope of the utility model.

Claims

1. A split and detachable flow guide cover for a deep well submersible pump, characterized in that, It includes a fairing formed by combining two semi-pipes (1) into one body, two flange halves (4) respectively connected to one end of the two semi-pipes and capable of being combined into one body, a sealing clamping plate (3) located at the joint of the two semi-pipes (1), and a first bolt (2) connecting the two semi-pipes (1) into one body. The joints of the two semi-pipes (1) respectively extend radially outwards to form outer eaves edges (12). A plurality of first through holes are formed in the outer eaves edges (12). The sealing clamping plate (3) placed at the connection of the two outer eaves edges (12) is strip-shaped, and its length along the radial direction is less than the length of the outer eaves edge (12), leaving a position for the water pump cable to pass through. A cable passing hole (41) is provided at the connection of the two flange halves (4). The cable passing hole (41) is located above the water pump cable passing at the connection of the two outer eaves edges (12). First sealing strips (31) are respectively arranged on the contact surface sides of the sealing clamping plate (3) and the two outer eaves edges (12). Second through holes corresponding to the first through holes on the outer eaves edge (12) are formed on the sealing clamping plate (3). The first bolt (2) passes through the first through holes and the second through holes to fix the two semi-pipes (1) and the sealing clamping plate (3), so that the two semi-pipes (1) are combined into one body.

2. The split and detachable flow guide cover of the deep well submersible pump according to claim 1, characterized in that, A plurality of limiting columns (32) are respectively fixed on both sides of the sealing clamping plate (3) in contact with the outer eaves edge (12). Limiting holes (11) matching the limiting columns (32) are formed at corresponding positions on the contact surface of the outer eaves edge (12). The size of the limiting holes (11) is the same as that of the limiting columns (32), so that the limiting columns (32) can just be inserted into the limiting holes (11).

3. The split and detachable flow guide cover of the deep well submersible pump according to claim 2, characterized in that, There are 3 limiting holes (11) and limiting columns (32) respectively, which are evenly distributed along the height directions of the outer eaves edge (12) and the sealing clamping plate (3).

4. The split and detachable flow guide cover of the deep well submersible pump according to claim 2 or 3, characterized in that, The cross-sections of the limiting holes (11) and the limiting columns (32) are square.

5. The split and detachable flow guide cover of the deep well submersible pump according to claim 1, characterized in that, One end of the two semi-pipes (1) is welded to the two flange halves (4). A second sealing strip (42) is provided between the two flange halves (4). The two flange halves (4) and the fixed flange (6) on the pump body are connected by second bolts (5).

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