Drainage pipe structure of high-temperature submerged pump

Abstract

The utility model relates to a drain pipe structure of a high-temperature submerged pump. The drain pipe structure of the high-temperature submerged pump comprises a drain pipe, a protective pipe, a bottom plate and a split flange, the bottom plate is of an integral structure with two holes formed in the middle, the liquid discharge pipe and the protective pipe penetrate through one of the two holes respectively, the liquid discharge pipe and the water outlet elbow are arranged in a communicated mode, a gap is formed between the liquid discharge pipe and the bottom plate, and the split flange is located between the water outlet elbow and the bottom plate; a split-half ring, a pressing plate and copper filler are additionally arranged between the liquid discharging pipe and the bottom plate, gaps with the isolation function are reserved between the split-half ring and the bottom plate and between the split-half ring and the liquid discharging pipe, the split-half ring is located on the lower portion of the gaps, and a metal wound gasket is arranged between the water outlet bent pipe and the split-half flange. On the basis of an existing structure, the liquid discharging pipe is separated from the bottom plate, and high-temperature transmission is avoided. And meanwhile, the bottom plate can be separated from a high-temperature medium, so that erosion corrosion of the medium to the bottom plate and operation accidents caused by leakage of the high-temperature medium are prevented, and the maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to a liquid discharge pipe structure, in particular to a liquid discharge pipe structure of a high-temperature submerged pump with a simple structure, which can avoid high-temperature transfer and prevent the medium from scouring and corroding the bottom plate. Background Art

[0002] High-temperature submerged pumps are specifically used for transporting various media under high-temperature working conditions, such as various high-temperature molten salts, liquid metals, organic and inorganic compounds, etc. The temperature of such media can reach above 500 °C at the highest, and the media have certain corrosiveness. Due to their special working conditions, involving high temperature and corrosive media, strict requirements are imposed on the structure of the pump and the materials of the flow-through components.

[0003] Figure 1 Shown in Figure 1 is a structural schematic diagram of an existing similar product. As shown: The existing liquid discharge pipe structure of a high-temperature submerged pump mainly includes: a liquid discharge pipe 2', an elbow 5', a water outlet flange 6', a bottom plate 7', a rib plate 4', a protection pipe 8', an upper flange 3', and a lower flange 1'. Both ends of the liquid discharge pipe 2' and the protection pipe 8' are welded to the upper flange 3 and the lower flange 1' respectively, and are connected to the pump body and the bottom plate 7' at both ends. The lower end of the elbow 5' is welded to the bottom plate 7', and the upper end is welded to the water outlet flange 6'. A rib plate 4' is provided below the water outlet flange 6' to play a supporting role.

[0004] It can be seen from Figure 1 that: First, the upper flange 3' is directly connected to the bottom plate 7'. The liquid discharge pipe 2' is filled with pressurized high-temperature medium, and the high temperature is directly transferred to the bottom plate 7' through the upper flange 3', resulting in a high temperature of the bottom plate 7' and posing a safety hazard. Second, since the bottom plate 7' is made of high-temperature resistant material, has a large size and a high price, and the bottom plate 7' is directly in contact with the pressurized high-temperature medium, long-term operation will cause serious scouring and corrosion to the bottom plate 7', increasing the maintenance cost, and even causing serious accidents such as leakage of high-temperature medium, with relatively large potential risks. Content of the Utility Model

[0005] Aiming at the above problems, the main purpose of the utility model is to provide a liquid discharge pipe structure of a high-temperature submerged pump with a simple structure, which can avoid high-temperature transfer and prevent the medium from scouring and corroding the bottom plate.

[0006] The utility model solves the above technical problems through the following scheme: A liquid discharge pipe structure of a high-temperature submerged pump, the liquid discharge pipe structure of the high-temperature submerged pump includes: a liquid discharge pipe, a protection pipe, a bottom plate, and a split flange.

[0007] The bottom plate is an integral structure with two holes opened in the middle. The liquid discharge pipe and the protection pipe respectively pass through one of the two holes. The liquid discharge pipe and the water outlet elbow are arranged in communication. There is a gap between the liquid discharge pipe and the bottom plate. The split flange is located between the water outlet elbow and the bottom plate.

[0008] A half ring, a pressing plate and copper packing are added between the liquid discharge pipe and the bottom plate. There are gaps with isolation functions between the half ring and both the bottom plate and the liquid discharge pipe. The half ring is located at the lower part of the gap, and a metal wound gasket is provided between the water outlet elbow and the half flange.

[0009] In a specific embodiment of the present utility model, the half ring is divided into an upper half and a lower half. There are gaps between the upper half and both the liquid discharge pipe and the bottom plate. The lower half is fixed to the bottom plate by a bolt-nut combination. The copper packing is located near the liquid discharge pipe, and the pressing plate is located between the nut and the half ring.

[0010] In a specific embodiment of the present utility model, a flange bracket for supporting the water outlet elbow is provided between the water outlet elbow and the bottom plate.

[0011] In a specific embodiment of the present utility model, both ends of the flange bracket are fixed to the water outlet elbow and the bottom plate by screws.

[0012] In a specific embodiment of the present utility model, a reinforcing rib plate for limiting is provided between the liquid discharge pipe and the protection pipe, and the reinforcing rib plate is located below the bottom plate.

[0013] In a specific embodiment of the present utility model, the liquid discharge pipe and the protection pipe are arranged in parallel and are both perpendicular to the bottom plate.

[0014] In a specific embodiment of the present utility model, the half flange is provided with threaded holes, and the water outlet elbow and the half flange are sealed by tightening with bolts.

[0015] In a specific embodiment of the present utility model, the width of the gap is 5 - 15 times the width of the clearance.

[0016] The positive and progressive effects of the present utility model are as follows: Compared with common similar technologies, the liquid discharge pipe structure of the high-temperature submerged pump provided by the present utility model separates the liquid discharge pipe from the bottom plate on the basis of the existing structure to avoid high-temperature transfer. At the same time, this structure can separate the bottom plate from the high-temperature medium, prevent the medium from scouring and corroding the bottom plate, avoid operation accidents caused by leakage of the high-temperature medium, and reduce the maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of an existing similar product.

[0018] Figure 2 It is a schematic diagram of the overall structure of the present utility model.

[0019] Figure 3 For Figure 2 The partial enlarged view of.

[0020] The following are the names corresponding to the reference numerals in the present utility model:

[0021] Flange 1, drain pipe 2, copper packing 3, pressing plate 4, split ring 5, flange support 6, split flange 7, metal wound gasket 8, outlet elbow 9, bottom plate 10, reinforcing rib plate 11, protective pipe 12, bolt 13, gap 14, first gap 201, second gap 1001. Specific implementation mode

[0022] The following presents a preferred embodiment of the present invention in conjunction with the accompanying drawings to elaborate in detail on the technical solution of the present invention.

[0023] Figure 2 It is a schematic diagram of the overall structure of the present invention. Figure 3 is Figure 2 a partial enlarged view of Figure 2 and 3 As shown: The drain pipe structure of the high-temperature submerged pump proposed by the present invention includes: drain pipe 2, protective pipe 12, bottom plate 10, split flange 7; the drain pipe 2 and the protective pipe 12 are arranged in parallel and are both perpendicular to the bottom plate 10. The bottom plate 10 is an integral structure with two holes in the middle. The drain pipe 2 and the protective pipe 12 respectively pass through one of the two holes. The drain pipe 2 and the outlet elbow 9 are connected and arranged. A gap 14 is provided between the drain pipe 2 and the bottom plate 10. The split flange 7 is located between the outlet elbow 9 and the bottom plate 10. A split ring 5, a pressing plate 4 and a copper packing 3 are added between the drain pipe 2 and the bottom plate 10. There are gaps with an isolation effect between the split ring 5 and the bottom plate 10 and the drain pipe 2. The split ring 5 is located below the gap 14. A metal wound gasket 8 is provided between the outlet elbow 9 and the split flange 7. The copper packing 3 can prevent foreign matters such as external dust from falling into the medium and causing pollution, and can prevent the leakage of high-temperature gas and cause harm.

[0024] The split ring 5 is divided into an upper half and a lower half. Gaps (see the first gap 201 and the second gap 1001 in the figure) are provided between the upper half and both the drain pipe 2 and the bottom plate 10. The gaps play an isolation role to prevent high temperature from being transmitted to the bottom plate 10. The lower half is fixed to the bottom plate 10 through a bolt-nut combination. The copper packing 3 is located near the drain pipe 2, and the pressing plate 4 is located between the nut and the split ring 5. In the specific implementation process, the widths of the first gap 201 and the second gap 1001 can be equal, and the width of the gap 14 can be 5 - 15 times the width of the gap. In the specific implementation process, other parameters can also be taken.

[0025] In the specific implementation process, a flange support 6 for supporting the outlet elbow 9 is provided between the outlet elbow 9 and the bottom plate 10 of the present invention. Both ends of the flange support 6 are fixed to the outlet elbow 9 and the bottom plate 10 through screws.

[0026] The flange bracket 6 supports the water outlet elbow 9. Additionally, a reinforcing rib plate 11 is provided between the drain pipe 2 and the protective pipe 12 to limit the position of the drain pipe 2. In the present utility model, the reinforcing rib plate 11 is located below the bottom plate 10, and the distance from the bottom plate 10 is determined according to the specific on-site arrangement.

[0027] The split flange 7 is provided with threaded holes. The water outlet elbow 9 and the split flange 7 are tightened and sealed by bolts 13. A metal wound gasket 8 is provided between the water outlet elbow 9 and the split flange 7, and the sealing is achieved by tightening the bolts.

[0028] On the basis of the original structure, the present utility model adopts a design in which the drain pipe is separated from the bottom plate, avoiding the transfer of high temperature to the bottom plate and causing potential risks. The bottom plate is not in direct contact with the high-temperature medium, preventing the medium from scouring the bottom plate and saving costs for later maintenance. Compared with existing products, the structure of the present utility model is more reasonable and reliable, greatly reducing the operation risk, improving the reliability of the product, and reducing the maintenance cost.

[0029] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A high-temperature submersible pump discharge pipe structure, characterized in that: The high-temperature submersible pump discharge pipe structure comprises: a discharge pipe, a protective pipe, a bottom plate, and a half flange; The bottom plate is an integral structure with two holes in the middle. The drain pipe and the protective pipe pass through one of the two holes respectively. The drain pipe and the outlet elbow are connected and arranged. A gap is provided between the drain pipe and the bottom plate. The half flange is located between the outlet elbow and the bottom plate. A half ring, a pressure plate and a copper filler are added between the discharge pipe and the bottom plate. An isolation gap is left between the half ring, the bottom plate and the discharge pipe. The half ring is located at the lower part of the gap. A metal winding gasket is provided between the outlet elbow and the half flange.

2. The high-temperature submersible pump discharge pipe structure according to claim 1, characterized in that: The half ring is divided into an upper part and a lower part. Gaps are arranged between the upper part, the drain pipe and the bottom plate. The lower part is fixed to the bottom plate by a combination of bolts and nuts. The copper filler is located near the drain pipe, and the pressure plate is located between the nut and the half ring.

3. The high-temperature submersible pump discharge pipe structure according to claim 1 or 2, characterized in that: A flange bracket for supporting the water outlet elbow is arranged between the water outlet elbow and the bottom plate.

4. The high-temperature submersible pump discharge pipe structure according to claim 3, characterized in that: Both ends of the flange bracket are fixed to the water outlet elbow and the bottom plate by screws.

5. The high-temperature submersible pump discharge pipe structure according to claim 1 or 3, characterized in that: A reinforcing rib plate which plays a limiting role is arranged between the drain pipe and the protective pipe, and the reinforcing rib plate is located below the bottom plate.

6. The high-temperature submersible pump discharge pipe structure according to claim 1, characterized in that: The drain pipe and the protective pipe are arranged in parallel and are perpendicular to the bottom plate.

7. The high-temperature submersible pump discharge pipe structure according to claim 1, characterized in that: The half flange is provided with threaded holes, and the outlet elbow and the half flange are tightened and sealed by bolts.

8. The high-temperature submersible pump discharge pipe structure according to claim 2, characterized in that: The width of the gap is 5-15 times the width of the gap.

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