High-temperature molten salt pump with self-balancing sealing, modularization and supporting integrated structure

Abstract

The utility model relates to a high-temperature molten salt pump with a self-balancing sealing, modularization and supporting integrated structure. The high-temperature molten salt pump comprises a discharge seat, a modularization outer pipe component, a pump head component and the like. The pump head part is installed below the liquid level in the molten salt tank, the discharge seat is installed above the bottom plate, the discharge seat and the pump head part are connected through a plurality of modularized outer pipes, and the number of the modularized outer pipe parts can be changed according to the installation depth of the molten salt pump. The modularized outer pipe components, the modularized outer pipe components and the pump head component as well as the modularized outer pipe components and the discharge seat are internally connected through sleeve coupling components and externally connected through flanges. The submerged pump is compact in structure, free of leakage, safe and reliable, and meanwhile the problems that a whole common molten salt pump is difficult to install and high in cost, and a long shaft of the submerged pump is eccentrically shaken and rubbed are solved; the main parts are installed in a modularized mode, installation and disassembly are convenient, the number of the parts of the modularized lifting pipe is adjustable, the parts are installed and disassembled section by section, and the overhaul space is small.

Description

TECHNICAL FIELD

[0001] The utility model relates to a high temperature molten salt pump, concretely relates to a high temperature molten salt pump of self -balancing, good sealing, easy installation and maintenance, good rigidity of the rotating shaft, modular support integrated structure, the depth of submergence adjustable self -balancing sealing, modular, support integrated structure. BACKGROUND

[0002] With global warming and the increasingly exhausted non-renewable resources, the research and development of renewable energy are increasingly valued. In the field of solar thermal power generation, molten salt energy storage technology is widely used due to its high efficiency and stability. As a key component in the molten salt energy storage system, the photothermal molten salt pump plays a crucial role in achieving efficient utilization and storage of solar energy.

[0003] The photothermal molten salt pump is mainly responsible for transporting hot salt from the hot salt tank to the steam generation system in the molten salt energy storage system. The heat exchange between water and steam produces high-temperature and high-pressure superheated steam. The cooled salt returns to the cold salt tank, completing the absorption, storage, and conversion cycle of molten salt. During this process, the performance of the photothermal molten salt pump directly affects the efficiency and stability of the molten salt energy storage system.

[0004] The molten salt pump usually has a long shaft structure, which generally generates a large axial force. Moreover, during operation, the medium may climb the shaft, posing a risk of leakage.

[0005] During installation, the molten salt pump is usually hoisted as a whole, which is costly and inconvenient for maintenance and disassembly. The complex system conditions cause the pump shaft to shake violently, and the bearing is constantly subjected to one-sided wear. Therefore, the submerged pump has a high failure frequency, and the pump maintenance cycle is short. SUMMARY

[0006] To solve the above problems, the main purpose of the utility model is to provide a high temperature molten salt pump of self -balancing, good sealing, easy installation and maintenance, good rigidity of the rotating shaft, modular support integrated structure, the depth of submergence adjustable self -balancing sealing, modular, support integrated structure.

[0007] The utility model solves the above technical problem through the following technical scheme: a high temperature molten salt pump of self -balancing sealing, modular, support integrated structure, the high temperature molten salt pump of self -balancing sealing, modular, support integrated structure includes: the discharge seat, the modular outer tube component, the pump head component, the pump head component is installed in the molten salt tank below the liquid level, the discharge seat is installed above the bottom plate, and the discharge seat and the pump head component are connected by a plurality of modular outer tube components.

[0008] The interior between adjacent modular outer tube components is connected by a sleeve coupling component, the interior between the modular outer tube component and the pump head component is connected by a sleeve coupling component, and the interior between the modular outer tube component and the discharge seat is connected by a sleeve coupling component.

[0009] The exterior between adjacent modular outer tube components is connected by a flange connection, the exterior between the modular outer tube component and the pump head component is connected by a flange connection, and the exterior between the modular outer tube component and the discharge seat is connected by a flange connection.

[0010] A self-balancing sealing structure is arranged below the discharge seat.

[0011] In the embodiment of the utility model, the self-balancing sealing includes upper shaft, branch pipe, drain pipe, snap ring, balance sleeve, wear ring and riding seam screw, the balance sleeve is fixed on the upper shaft by the snap ring and key, and the upper shaft drives the balance sleeve to rotate, the wear ring is fixed on the branch pipe by the riding seam screw, the drain pipe is welded on the branch pipe, and the branch pipe is fixed on the discharge seat by the rib plate.

[0012] In the embodiment of the utility model, the modular outer tube component includes outer tube, middle shaft, wear ring support, wear ring, balance sleeve, snap ring, key, positioning screw and riding seam screw, the balance sleeve is fixed on the middle shaft by the snap ring and key and rotates with the middle shaft, the wear ring is installed in the wear ring support and is fixed by the riding seam screw, and the wear ring support is fixed on the outer tube by the positioning screw.

[0013] In the embodiment of the utility model, the sleeve coupling component includes sleeve coupling and sleeve, and the sleeve is half split structure convenient to disassemble and assemble.

[0014] In the embodiment of the utility model, the connecting surface joint of the flange connection is provided with a winding pad for sealing.

[0015] The utility model discloses a self-balancing sealing, modularization, support integrated structure's high temperature molten salt pump compared with common technology has the following advantages: the utility model has the advantages of compact structure, no leakage, safety and reliability, and simultaneously avoids the problems of ordinary molten salt pump installation difficulty, high cost and long shaft eccentricity shaking friction of the submerged pump, the modularization installation of main parts is convenient for installation and disassembly, the number of modularization lifting tube components can be adjusted, the components are installed and dismounted section by section, and the maintenance space is small. DRAWINGS

[0016] Figure 1 It is one of the overall structure schematic views of the utility model.

[0017] Figure 2-1 It is one of the local structure schematic views of the utility model.

[0018] Figure 2-2 It is one of partial principle schematic views of the utility model.

[0019] Figure 3 It is one of partial structure schematic views of the utility model.

[0020] Figure 4 It is a schematic view of the wear-resistant ring support in the utility model.

[0021] The following is the name corresponding to the label in the utility model:

[0022] The discharge seat 01, the bottom plate 02, the winding pad 03, the snap ring 04, the upper shaft 05, the branch pipe 06, the drain pipe 07, the pump head part 100, the sleeve coupling part 200, the modular outer pipe part 300, the outer pipe 301, the middle shaft 302, the wear-resistant ring support 303, the positioning screw 304, the split screw 305, the balance sleeve 306, the wear-resistant ring 307, the key 308. DETAILED DESCRIPTION

[0023] The following will give the preferred embodiment of the utility model in combination with the drawings to explain the technical scheme of the utility model in detail.

[0024] Figure 1 It is one of overall structure schematic views of the utility model, as shown in Figure 1 The utility model provides a high temperature molten salt pump of self-balancing sealing, modularization, support integrated structure, including discharge seat 01, modular outer pipe part 300, pump head part 100 etc. Pump head part 100 is installed in the liquid level below molten salt tank, and discharge seat 01 is installed above bottom plate 02, and discharge seat 01 and pump head part 100 are connected using several modular outer pipe parts 300, and the number of modular outer pipe part 300 can be changed according to the installation depth of molten salt pump.

[0025] The inside between adjacent modular outer pipe parts 300 is connected through sleeve coupling part 200, the inside between modular outer pipe part 300 and pump head part 100 is connected through sleeve coupling part 200, and the inside between modular outer pipe part 300 and discharge seat 01 is connected through sleeve coupling part 200.

[0026] The outside between adjacent modular outer pipe parts 300 is connected through flange connection, the outside between modular outer pipe part 300 and pump head part 100 is connected through flange, and the outside between modular outer pipe part 300 and discharge seat 01 is connected through flange.

[0027] The discharge seat 01 below is provided with a self-balancing sealing structure, as shown in Figure 2-1As shown, the self-balancing sealing structure comprises an upper shaft 05, a branch pipe 06, a drain pipe 07, a snap ring 04, a balancing sleeve 306, a wear-resistant ring 307 and a split screw 305; the balancing sleeve 306 is fixed on the upper shaft 05 by the snap ring 04 and a key 308, and the upper shaft 05 drives the balancing sleeve 306 to rotate; the wear-resistant ring 307 is fixed on the branch pipe 06 by the split screw 305, and the drain pipe 07 is welded on the branch pipe 06, and the branch pipe 06 is fixed on the discharge seat 01 through a web plate.

[0028] As shown in Figure 2-1 and 2-2 shown, the high-pressure zone medium leaks into the inner cavity of the branch pipe 06 through the extremely small gap formed by the balancing sleeve 306 and the wear-resistant ring 307, and the leaked medium flows back to the molten salt storage tank through the drain pipe 07, ensuring that the conveying medium does not leak to the environment, achieving the effect of sealing.

[0029] As shown in Figure 2-2 , the balancing sleeve 306 forms an acting force from the high-pressure zone to the low-pressure zone due to the pressure difference before and after, and this acting force can balance the great axial force generated when the water pump impeller works.

[0030] As shown in Figure 3 , the modular outer pipe component comprises an outer pipe 301, a middle shaft 302, a wear-resistant ring support 303, a wear-resistant ring 307, a balancing sleeve 306, a snap ring 04, a key 308, a positioning screw 304 and a split screw 305, the balancing sleeve 306 is fixed on the middle shaft 302 by the snap ring 04 and the key 308 and rotates with the middle shaft 302, the wear-resistant ring 307 is installed in the wear-resistant ring support 303 and is fixed by the split screw 305, and the wear-resistant ring support 303 is fixed on the outer pipe 301 by the positioning screw 304.

[0031] As shown in Figure 4 , compared with the integrated welded structure, the wear-resistant ring support 303 has a simple casting structure and low material cost; the processing difficulty is low, the processing time and cost are reduced, the processing cost is effectively reduced; the modular design facilitates quick disassembly and assembly, reduces the maintenance difficulty and cost, ensures the precision requirements such as the concentricity of parts, components and systems, and improves the product performance; has good damping performance, reduces the influence of mechanical vibration on the guide bearing, and prolongs the service life of the equipment.

[0032] The sleeve coupling component 200 is composed of a sleeve coupling 201 and a clamping sleeve 202, and the clamping sleeve 202 is a half-split structure and is easy to disassemble and assemble.

[0033] The specific working process of the utility model is as follows:

[0034] As shown in Figure 2-2As shown, after the high-pressure zone fluid reaches the high-speed rotating balance sleeve, most of the conveying medium flows into the system pipeline through the discharge seat, and only a small amount of medium leaks into the branch cavity, then flows back to the molten salt storage tank through the return pipe, ensuring that the conveying medium does not leak to the environment, achieving the effect of sealing. The balance sleeve forms an acting force from the high-pressure zone to the low-pressure zone due to the pressure difference before and after, and this acting force can balance the great axial force generated during the operation of the water pump impeller.

[0035] In a preferred embodiment of the present application, the sleeve coupling component is axially positioned at both ends by a snap ring 04.

[0036] In a preferred embodiment of the present application, the flange connection surface is sealed with a wrapped gasket 03.

[0037] The high-temperature molten salt pump with self-balancing sealing, modularization and supporting integrated structure provided by the present application has the advantages of compact structure, no leakage and safety and reliability, and at the same time avoids the problems of difficult installation, high cost and long shaft eccentric shaking friction of ordinary molten salt pumps; the main component is modularly installed, convenient to install and disassemble, the number of modularized lifting pipe components can be adjusted, the components are installed and disassembled section by section, and the maintenance space is small.

[0038] The basic principles and main features of the present application and the advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A self-balancing, sealed, modular, support-integrated structure high-temperature molten salt pump, characterized in that: The self-balanced sealing, modular, supporting integrated structure high-temperature molten salt pump comprises a discharge seat, a modular outer tube component and a pump head component; the pump head component is installed below the liquid level in the molten salt tank, the discharge seat is installed above the bottom plate, and the discharge seat and the pump head component are connected by the modular outer tube component; The interiors between adjacent modular outer tube components are connected by sleeve coupling components, the interiors between the modular outer tube component and the pump head component are connected by sleeve coupling components, and the interiors between the modular outer tube component and the discharge seat are connected by sleeve coupling components; The exteriors between adjacent modular outer tube components are connected by flange connections, the exteriors between the modular outer tube component and the pump head component are connected by flange connections, and the exteriors between the modular outer tube component and the discharge seat are connected by flange connections. A self-balanced sealing structure is arranged below the discharge seat.

2. The self-balancing, sealed, modular, supported integrated high-temperature molten salt pump of claim 1, wherein: The self-balanced sealing structure comprises an upper shaft, a branch pipe, a drain pipe, a snap ring, a balance sleeve, a wear-resistant ring and a riding screw; the balance sleeve is fixed on the upper shaft by the snap ring and the key, and the upper shaft drives the balance sleeve to rotate; the wear-resistant ring is fixed on the branch pipe by the riding screw, the drain pipe is welded on the branch pipe, and the branch pipe is fixed on the discharge seat by the rib plate.

3. The self-balancing, sealed, modular, supported integrated high-temperature molten salt pump of claim 1, wherein: The modular outer tube component comprises an outer tube, a middle shaft, a wear-resistant ring support, a wear-resistant ring, a balance sleeve, a snap ring, a key, a positioning screw and a riding screw; the balance sleeve is fixed on the middle shaft by the snap ring and the key and rotates with the middle shaft, the wear-resistant ring is installed in the wear-resistant ring support and is fixed by the riding screw, and the wear-resistant ring support is fixed on the outer tube by the positioning screw.

4. The self-balancing, sealed, modular, supported integrated high-temperature molten salt pump of claim 1, wherein: The sleeve coupling component comprises a sleeve coupling and a clamping sleeve, and the clamping sleeve is a half-split structure which is easy to disassemble and assemble.

5. The self-balancing, sealed, modular, supported integrated high-temperature molten salt pump of claim 1, wherein: The connecting surface of the flange connection is provided with a winding gasket for sealing.

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