Multi-channel steam injection device
By designing multi-channel water nozzles, mixing pipes and guide pipes in the steam induction device, the problems of low heat exchange efficiency and complex structure of the existing devices are solved, and more efficient low-parameter steam waste heat utilization and overall practicality are achieved.
Patent Information
- Application Number
- CN202421388552.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-18
- Publication Date
- 2025-03-04
- Estimated Expiration
- 2034-06-18
Smart Images
Figure CN222558882U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of steam injection, in particular to a multi-channel steam injection device. Background Art
[0002] Steam ejectors are mainly used in industrial production. Steam ejectors can use the high-speed airflow generated by the injection of high-pressure steam (driving steam) to increase the pressure and temperature of low-pressure steam or condensate flash steam, while reducing the pressure and temperature of high-pressure steam, thereby increasing the pressure and temperature of low-pressure steam to the indicators required by the production process and achieving energy saving.
[0003] If the waste heat in low-parameter steam is not utilized, a large amount of energy will be wasted. In today's increasingly tight energy situation, people are considering how to make full use of the waste heat in low-parameter steam. Since low-parameter steam has low pressure, large specific volume, and small volume specific heat, if a surface heat exchanger is used, the heat transfer coefficient during the heat exchange process is very low, requiring a large heat exchange area, making the heat exchanger very large, consuming a lot of metal materials, and having a high cost, and it is difficult to discharge condensate in a low-pressure vacuum state: if a hybrid absorption device is used, the spraying process requires water pressure, which wastes water pump electricity, and the structure is also relatively large. Therefore, it is particularly important to improve the existing ejector device and design a new multi-channel steam ejector device to solve the above technical defects and improve the practicality of the overall ejector device. Utility Model Content
[0004] The purpose of the utility model is to provide a multi-channel steam ejector device, through the design of water nozzles, mixing tubes and guide tubes, water flow and low-pressure steam are accelerated and guided, the contact surface area of steam and water is increased, the momentum transfer and steam-water mixing are more complete, the overall practicality of the ejector device is improved, so as to solve the problems raised in the above-mentioned background technology.
[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0006] A multi-channel steam ejection device comprises a water inlet pipe and a water outlet pipe, wherein one end of the water inlet pipe close to the water outlet pipe is provided with a steam inlet pipe, the water outlet pipe is connected to the water inlet pipe through the steam inlet pipe, the water inlet pipe extends to the steam inlet pipe and is provided with a plurality of water spray pipes, the steam inlet pipe extends to the water outlet pipe and is provided with a plurality of mixing pipes, the steam inlet pipe is provided inside and outside the water spray pipe with a plurality of guide pipes, and the guide pipes are provided with an acceleration assembly inside;
[0007] The accelerating component is used for accelerating the liquid sprayed from the water spray pipe.
[0008] As a preferred solution of the utility model, a plurality of groups of the water nozzles are distributed at equal intervals inside the steam inlet pipe, and guide grooves are provided inside the water nozzles, and the guide grooves are designed as a spiral structure inside the water nozzles.
[0009] As a preferred solution of the utility model, multiple groups of water spray pipes and mixing flow pipes form multiple groups of channels inside the steam inlet pipe and the water outlet pipe.
[0010] As a preferred solution of the utility model, the acceleration assembly is composed of a guide block, a guide plate, a rotating rod and a spiral blade. The guide block is located inside the guide tube, and multiple groups of guide plates are located outside the guide block and inside the guide tube. The rotating rod is rotatably connected to the outside of the guide block, and the spiral blade is fixedly connected to one end of the rotating rod extending to the outside of the guide tube.
[0011] As a preferred solution of the utility model, the guide plate is designed as a spiral structure, and multiple groups of the guide plates are distributed at equal intervals on the outside of the guide block.
[0012] As a preferred solution of the utility model, a cooling chamber is provided inside the steam inlet pipe and outside the water spray pipe, and a conveying pipe is provided on the outside of the cooling chamber extending to the steam inlet pipe.
[0013] As a preferred solution of the utility model, a guide pipe is provided at one end of the water outlet pipe away from the steam inlet pipe, a closing block is provided inside the guide pipe, and the closing block is connected to the guide pipe through a spring.
[0014] Compared with the prior art, the beneficial effects of the utility model are:
[0015] In the utility model, through the design of the water spray pipe, the mixing pipe and the guide pipe, the water flow and the low-pressure steam are accelerated and guided, the contact surface area of the steam and water is increased, and the momentum transfer and the steam-water mixing are made more complete. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0017] Figure 2 This is a schematic diagram of the overall internal structure of the utility model;
[0018] Figure 3 This is a schematic diagram of the internal structure of the water spray pipe of the utility model;
[0019] Figure 4 This is a schematic diagram of the structure of the acceleration component of the utility model.
[0020] In the figure: 1. water inlet pipe; 2. water outlet pipe; 3. steam inlet pipe; 4. water nozzle; 5. mixing flow pipe; 6. guide pipe; 7. acceleration assembly; 8. guide groove; 9. guide block; 10. guide plate; 11. rotating rod; 12. spiral blade; 13. cooling chamber; 14. guide pipe; 15. closing block. DETAILED DESCRIPTION
[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.
[0022] Example:
[0023] See also Figure 1-Figure 4 , the utility model provides a technical solution:
[0024] A multi-channel steam ejection device comprises a water inlet pipe 1 and a water outlet pipe 2. A steam inlet pipe 3 is arranged at one end of the water inlet pipe 1 close to the water outlet pipe 2. The water outlet pipe 2 is connected to the water inlet pipe 1 through the steam inlet pipe 3. A plurality of water spray pipes 4 are arranged inside the water inlet pipe 1 extending to the steam inlet pipe 3. A plurality of mixing flow pipes 5 are arranged inside the steam inlet pipe 3 extending to the water outlet pipe 2. A plurality of guide pipes 6 are arranged inside the steam inlet pipe 3 and outside the water spray pipe 4. An acceleration assembly 7 is arranged inside the guide pipe 6.
[0025] The acceleration component 7 is used to accelerate the liquid sprayed from the water spray pipe 4 .
[0026] Furthermore, multiple groups of water nozzles 4 are distributed at equal intervals inside the steam inlet pipe 3, and a guide groove 8 is opened inside the water nozzle 4. The guide groove 8 is designed with a spiral structure inside the water nozzle 4. When the water flow is introduced into the water nozzle 4, the spiral structure design of the guide groove 8 can guide and accelerate the water flow sprayed from the water nozzle 4.
[0027] Among them, multiple groups of water nozzles 4 and mixing pipes 5 form multiple groups of channels inside the steam inlet pipe 3 and the water outlet pipe 2. When the water flow is accelerated through the guide pipe 6 and injected into the mixing pipe 5, extremely low pressure is generated, and low-pressure steam is introduced into the steam inlet pipe 3. Under the action of the extremely low pressure behind the guide pipe 6, it is sucked into the mixing pipe 5. Steam and water are mixed in the mixing pipe 5, and the steam is condensed. At the same time, steam and water exchange momentum, and the pressure recovery process is completed inside the mixing pipe 5, and then it enters the water outlet pipe 2 to complete the injection.
[0028] Secondly, the acceleration component 7 is composed of a guide block 9, a guide plate 10, a rotating rod 11 and a spiral blade 12. The guide block 9 is located inside the guide tube 6, and multiple groups of guide plates 10 are located outside the guide block 9 and inside the guide tube 6. The rotating rod 11 is rotatably connected to the outside of the guide block 9, and the spiral blade 12 is fixedly connected to one end of the rotating rod 11 extending to the outside of the guide tube 6. When the water flow is introduced into the inside of the guide tube 6, the water flow can be further accelerated by the acceleration component 7, so that the water flow produces extremely low pressure.
[0029] Furthermore, the guide plate 10 is designed with a spiral structure, and multiple groups of guide plates 10 are distributed at equal intervals on the outside of the guide block 9. When the water flow is introduced into the inside of the guide pipe 6, it contacts the guide block 9. The multiple groups of spiral guide plates 10 on the outside of the guide block 9 can spirally accelerate the water flow and contact the spiral blades 12 on the outside of the guide pipe 6, driving the spiral blades 12 to rotate, so that the spiral blades 12 can drive the low-pressure steam inside the steam inlet pipe 3 to displace, mix with the water flow, and accelerate the introduction into the inside of the mixing flow pipe 5.
[0030] Furthermore, a cooling bin 13 is provided inside the steam inlet pipe 3 and outside the water nozzle 4. The cooling bin 13 is extended to the outside of the steam inlet pipe 3 and a delivery pipe is provided. The cooling water is introduced into the delivery pipe and then introduced into the cooling bin 13, thereby cooling the backflowing high-temperature steam and preventing the backflowing steam from damaging the ejection steam supply equipment, thereby extending the service life and having good safety performance.
[0031] Furthermore, a guide pipe 14 is provided at one end of the water outlet pipe 2 away from the steam inlet pipe 3, and a closing block 15 is provided inside the guide pipe 14. The closing block 15 is connected to the guide pipe 14 through a spring. When the water flow is introduced into the outside of the water outlet pipe 2, the closing block 15 is displaced so that the water flow can be introduced into the inside of the water outlet pipe 2 and discharged through the guide pipe 14 to complete the operation.
[0032] In this embodiment, the implementation scenario is specifically as follows: in actual use, when the water flow is introduced into the interior of the water nozzle 4, the spiral structure design of the guide groove 8 can guide and accelerate the water flow sprayed from the water nozzle 4, and the water flow is introduced into the interior of the guide pipe 6. When the water flow is introduced into the interior of the guide pipe 6, it contacts the guide block 9, and the water flow can be spirally accelerated by the multiple sets of spiral guide plates 10 on the outer side of the guide block 9, and contacts the spiral blades 12 on the outer side of the guide pipe 6, driving the spiral blades 12 to rotate, so that the spiral blades 12 can drive the low-pressure steam inside the steam inlet pipe 3 to displace, mix with the water flow, and accelerate the introduction into the interior of the mixing pipe 5 to generate extremely low pressure. The low-pressure steam is introduced into the interior of the steam inlet pipe 3, and the extremely low pressure steam after the guide pipe 6 Under the action of force, it is sucked into the mixing pipe 5, where steam and water are mixed, the steam is condensed, and at the same time, the steam and water exchange momentum, and complete the pressure recovery process inside the mixing pipe 5 and enter the water outlet pipe 2. When the water flow is introduced into the outside of the water outlet pipe 2, the closing block 15 is displaced so that the water flow can be introduced into the inside of the water outlet pipe 2 and discharged through the guide pipe 14, completing the operation and the injection. The cooling water is introduced into the inside of the delivery pipe so that it can be introduced into the inside of the cooling bin 13, thereby achieving the cooling effect on the backflowing high-temperature steam, avoiding the backflow steam from damaging the injection steam supply equipment, extending the service life, and having good safety performance. Compared with the existing injection device, the utility model can improve the overall practicality of the injection device through design.
[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A multi-channel steam ejector device, comprising a water inlet pipe (1) and a water outlet pipe (2), characterized in that: The water inlet pipe (1) is provided with a steam inlet pipe (3) at one end close to the water outlet pipe (2); the water outlet pipe (2) is connected to the water inlet pipe (1) through the steam inlet pipe (3); the water inlet pipe (1) is extended to the steam inlet pipe (3) and is provided with a plurality of water spray pipes (4); the steam inlet pipe (3) is extended to the water outlet pipe (2) and is provided with a plurality of mixing flow pipes (5); the steam inlet pipe (3) is provided inside and outside the water spray pipe (4) and is provided with a plurality of guide pipes (6); the guide pipes (6) are provided with an acceleration assembly (7); The accelerating component (7) is used to accelerate the liquid sprayed from the water spray pipe (4).
2. A multi-channel steam ejector device according to claim 1, characterized in that: A plurality of groups of water spray pipes (4) are distributed at equal intervals inside the steam inlet pipe (3), and a guide groove (8) is provided inside the water spray pipe (4). The guide groove (8) is designed as a spiral structure inside the water spray pipe (4).
3. A multi-channel steam ejector device according to claim 1, characterized in that: A plurality of groups of water spray pipes (4) and mixing flow pipes (5) form a plurality of groups of channels inside the steam inlet pipe (3) and the water outlet pipe (2).
4. A multi-channel steam ejector device according to claim 1, characterized in that: The acceleration assembly (7) is composed of a guide block (9), a guide plate (10), a rotating rod (11) and a spiral blade (12); the guide block (9) is located inside the guide tube (6); a plurality of groups of guide plates (10) are located outside the guide block (9) and inside the guide tube (6); the rotating rod (11) is rotatably connected to the outside of the guide block (9); and the spiral blade (12) is fixedly connected to one end of the rotating rod (11) extending to the outside of the guide tube (6).
5. A multi-channel steam ejector device according to claim 4, characterized in that: The guide plates (10) are designed to be spirally structured, and a plurality of groups of the guide plates (10) are distributed at equal intervals on the outside of the guide block (9).
6. A multi-channel steam ejector device according to claim 1, characterized in that: A cooling chamber (13) is provided inside the steam inlet pipe (3) and outside the water spray pipe (4); the cooling chamber (13) extends to the outside of the steam inlet pipe (3) and a conveying pipe is provided.
7. The multi-channel steam ejector device according to claim 1, characterized in that: A flow guide pipe (14) is provided at one end of the water outlet pipe (2) away from the steam inlet pipe (3), a closing block (15) is provided inside the flow guide pipe (14), and the closing block (15) is connected to the flow guide pipe (14) via a spring.