Thermal insulation jacket structure of single-stage centrifugal pump
By adopting a thermal insulation jacket structure in a single-stage centrifugal pump, the high-temperature state of the pump cover and the pump body is maintained by using steam to transport heat, solving the problems of reduced pump body efficiency and seal ring leakage in low-temperature environments, achieving more efficient medium transportation and lower machine cost.
Patent Information
- Application Number
- CN202421796612.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-29
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-07-29
AI Technical Summary
When existing single-stage centrifugal pumps operate in low-temperature environments, the increase in media viscosity affects the conveying efficiency and even leads to locking the pump body; while the sealing rings of traditional insulation structures are prone to deformation and leakage at high temperatures, and the use of high-temperature-resistant sealing rings will increase the cost of the whole machine.
The single-stage centrifugal pump insulation jacket structure is adopted to transport steam into the insulation jacket through the steam pipe, and the sealing chamber of the pump cover and the pump body are kept in a high temperature state by heat transfer, preventing the condensation of the medium from affecting the conveying efficiency.
It effectively prevents the reduction in equipment conveying efficiency and pump body locking problems caused by medium condensation, and avoids leakage problems caused by sealing ring deformation, reducing the cost of the whole machine.
Smart Images
Figure CN222863694U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of fluid machinery, in particular to a single-stage centrifugal pump heat preservation jacket structure. Background Art
[0002] In the early 19th century, with the improvement of metal processing technology, centrifugal pumps began to develop in a modern direction. As a common fluid conveying equipment, after improvement and development, the size of centrifugal pumps has gradually decreased, and the efficiency and performance have been significantly improved. They are widely used in various fields such as chemical industry, petroleum, food, sewage treatment, etc.
[0003] The single-stage single-suction centrifugal pump can convey high-viscosity solid-containing media with a temperature of -30℃ to 150℃. The pump head is divided into two parts: the pump body and the pump cover. It is split from the back of the impeller, which reduces the difficulty of maintenance. Without disassembling the pump casing, you only need to remove the middle section of the coupling to remove the rotor components, which greatly reduces maintenance time and reduces maintenance costs.
[0004] When the existing single-stage single-suction centrifugal pump operates in a low-temperature environment, different media will increase the viscosity of the medium under low temperature conditions, affecting the delivery efficiency of the single-stage centrifugal pump, and may even cause the pump body to lock. The traditional insulation structure uses a sealing ring to seal and form an independent insulation cavity. Since the medium used in the sealed cavity is high-temperature gas, conventional material sealing rings will deform and cause leakage of the insulation cavity. The use of high-temperature resistant sealing rings will lead to a significant increase in the cost of the entire machine. Therefore, a single-stage centrifugal pump insulation jacket structure is proposed to solve the above problems. Utility Model Content
[0005] In order to make up for the above shortcomings, the utility model provides a single-stage centrifugal pump insulation jacket structure, aiming to improve the problems in the prior art that low temperature causes the single-stage centrifugal pump to have reduced delivery efficiency or even lock, and that conventional material sealing rings are easily deformed, causing high-temperature medium to leak.
[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a single-stage centrifugal pump insulation jacket structure, including a pump body, a pump cover is fixedly connected to the right side of the pump body, a mouth ring is fixedly connected to the left side of the pump body, a transmission shaft is rotatably connected to the inside of the pump body, an impeller is fixedly connected to the left end of the transmission shaft, a bearing bracket is fixedly connected to the right side of the pump cover, an insulation jacket is fixedly connected to the inside of the pump cover, two steam inlets and outlets are fixedly connected to the right side of the insulation jacket, an organic sealing cover is fixedly connected to the right side of the pump cover, the organic sealing cover abuts against the right side of the insulation jacket, a bearing one is fixedly connected to the middle part of the inner part of the bearing bracket, and the transmission shaft is fixedly connected to the inside of the bearing one.
[0007] Furthermore, a second bearing is fixedly connected inside the right side of the bearing bracket, and a second fixing block is fixedly connected to the right end of the bearing bracket.
[0008] Furthermore, a ground wire is fixedly connected to the front right side of the second fixing block.
[0009] Furthermore, a fixing plate is rotatably connected to the middle portion of the transmission shaft, and the right side of the fixing plate is fixedly connected to the interior of the bearing bracket.
[0010] Furthermore, the left end of the transmission shaft is fixedly connected with a fixing block 1.
[0011] Furthermore, the impeller is made of carbon steel, and the transmission shaft is made of stainless steel.
[0012] Furthermore, the thermal insulation jacket can provide thermal insulation.
[0013] Furthermore, the pump body is made of stainless steel.
[0014] The utility model has the following beneficial effects:
[0015] 1. In the utility model, a pipe for conveying steam is connected inside one of the steam inlets and outlets, and a circulating pipe is installed at the other steam inlet and outlet. When the equipment is running, the medium will take away the temperature of the pump body, and the steam is conveyed to the insulation jacket through the steam pipe. The right end face of the pump cover is connected to the pump body in a sealed cavity in a heat transfer manner to maintain a high temperature state, thereby preventing the influence of medium condensation on the equipment conveying efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 A three-dimensional schematic diagram of a thermal insulation jacket structure of a single-stage centrifugal pump proposed by the utility model;
[0017] Figure 2 A structural schematic diagram of a bearing bracket of a single-stage centrifugal pump heat preservation jacket structure proposed by the utility model;
[0018] Figure 3 The utility model provides a schematic structural diagram of a mechanical seal gland of a single-stage centrifugal pump thermal insulation jacket structure.
[0019] Legend:
[0020] 1. Pump body; 2. Mouth ring; 3. Impeller; 4. Pump cover; 5. Drive shaft; 6. Insulation jacket; 7. Steam inlet and outlet; 8. Machine seal gland; 9. Bearing 1; 10. Bearing bracket; 11. Fixing block 1; 12. Fixing block 2; 13. Ground wire; 14. Fixing plate; 15. Bearing 2. DETAILED DESCRIPTION
[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0022] Reference Figure 1-Figure 3 The utility model provides an embodiment: a single-stage centrifugal pump insulation jacket structure, including a pump body 1, the pump body 1 is made of stainless steel, stainless steel can prolong the service life of the equipment, the pump body 1 can cooperate with the pump cover 4 to form a working chamber, the right side of the pump body 1 is fixedly connected with the pump cover 4, the insulation jacket 6 can be added separately, there is no need to change the casting model of the pump cover 4, while saving costs and improving the performance of the pump, the right side of the pump cover 4 is fixedly connected with the machine seal gland 8, the machine seal gland 8 abuts against the right side of the insulation jacket 6, the right end face of the pump cover 4 is connected with the machine seal gland 8 to form a tight The sealing cavity can achieve the function of sealing the medium by the pump body 1. The left side of the pump body 1 is fixedly connected with a mouth ring 2, which can play a sealing role to prevent medium leakage. The inside of the pump body 1 is rotatably connected with a transmission shaft 5, which is made of stainless steel. Stainless steel can make the transmission shaft 5 more wear-resistant. The transmission shaft 5 can drive the impeller 3 to rotate. The left end of the transmission shaft 5 is fixedly connected with an impeller 3, which is made of carbon steel. Carbon steel can make the impeller 3 withstand long-term cavitation effect wear of the medium. The left end of the transmission shaft 5 is fixedly connected with a fixed block 11, which can prevent To prevent the impeller 3 from sliding and falling, the impeller 3 can drive the medium to flow. The right side of the pump cover 4 is fixedly connected with a bearing bracket 10, and the bearing bracket 10 can support the right end of the transmission shaft 5. The inside of the pump cover 4 is fixedly connected with a thermal insulation jacket 6, and the thermal insulation jacket 6 can keep warm. The right side of the thermal insulation jacket 6 is fixedly connected with two steam inlets and outlets 7, and the steam inlet and outlet 7 can provide a connection for the steam pipeline. The middle part of the inner part of the bearing bracket 10 is fixedly connected with a bearing 9, and the bearing 9 can play a load-bearing role. The transmission shaft 5 is fixedly connected to the inside of the bearing 9. The bearing bracket 10 A bearing 2 15 is fixedly connected inside the right side, and the bearing 2 15 can fix the right end of the transmission shaft 5 to ensure stable rotation of the transmission shaft 5. A fixing block 2 12 is fixedly connected to the right end of the bearing bracket 10, and the fixing block 2 12 can close the bearing bracket 10. A ground wire 13 is fixedly connected to the front right side of the fixing block 2 12 to prevent leakage of electricity from the equipment from injuring people. A fixing plate 14 is rotatably connected to the middle part of the transmission shaft 5, and the fixing plate 14 can fix the bearing 1 9 to prevent the fixed bearing 1 9 from sliding. The right side of the fixing plate 14 is fixedly connected to the middle part of the bearing bracket 10.
[0023] Working principle: The driving shaft 5 of the pump is the medium input end, and the vertical upward port of the pump body 1 is the medium output port. The end face is flange-connected to the actual working end. The steam delivery pipe is connected to the inside of one of the steam inlets and outlets 7. A circulating pipe is installed on the other steam inlet and outlet 7. When the equipment is running, the medium will take away the temperature of the pump body 1 when the equipment rotates. By continuously delivering steam to the insulation jacket 6, the right end face of the pump cover 4 is connected to the pump body 1 in a heat transfer manner to form a sealed cavity that maintains a high temperature. This can prevent the equipment delivery efficiency from being affected by medium condensation, which can seriously cause the pump body 1 to lock.
[0024] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A single-stage centrifugal pump insulation jacket structure, comprising a pump body (1), characterized in that: The right side of the pump body (1) is fixedly connected to a pump cover (4), the left side of the pump body (1) is fixedly connected to a mouth ring (2), the pump body (1) is rotatably connected to a transmission shaft (5) inside, the left end of the transmission shaft (5) is fixedly connected to an impeller (3), the right side of the pump cover (4) is fixedly connected to a bearing bracket (10), the inside of the pump cover (4) is fixedly connected to a thermal insulation jacket (6), the right side of the thermal insulation jacket (6) is fixedly connected to two steam inlets and outlets (7), the right side of the pump cover (4) is fixedly connected to an organic sealing cover (8), the organic sealing cover (8) abuts against the right side of the thermal insulation jacket (6), the middle part of the inner part of the bearing bracket (10) is fixedly connected to a bearing one (9), and the transmission shaft (5) is fixedly connected to the inside of the bearing one (9).
2. A single-stage centrifugal pump insulation jacket structure according to claim 1, characterized in that: A second bearing (15) is fixedly connected inside the right side of the bearing bracket (10), and a second fixing block (12) is fixedly connected to the right end of the bearing bracket (10).
3. A single-stage centrifugal pump insulation jacket structure according to claim 2, characterized in that: A ground wire (13) is fixedly connected to the front right side of the second fixing block (12).
4. The single-stage centrifugal pump insulation jacket structure according to claim 1, characterized in that: The middle part of the transmission shaft (5) is rotatably connected to a fixing plate (14), and the right side of the fixing plate (14) is fixedly connected to the inner middle part of the bearing bracket (10).
5. The single-stage centrifugal pump insulation jacket structure according to claim 1, characterized in that: The left end of the transmission shaft (5) is fixedly connected to a fixing block 1 (11).
6. The single-stage centrifugal pump insulation jacket structure according to claim 1, characterized in that: The impeller (3) is made of carbon steel, and the transmission shaft (5) is made of stainless steel.
7. The single-stage centrifugal pump insulation jacket structure according to claim 1, characterized in that: The heat-insulating jacket (6) can provide heat insulation.
8. The single-stage centrifugal pump insulation jacket structure according to claim 1, characterized in that: The pump body (1) is made of stainless steel.