Steam energy storage spherical tank with assembled vibration-proof and noise reduction steam ejector

Abstract

The application provides a steam storage energy ball tank with an assembled vibration-proof and noise-reducing steam ejector, which comprises a ball tank body and a manhole capable of accessing the ball tank body for maintenance, the top end of the ball tank body is provided with a connecting through hole, and the application further comprises: a steam main pipe which is led out from the connecting through hole at the top of the ball tank body and extends downward, the top end of the steam main pipe is provided with a steam inlet; at least one layer of steam distribution pipes which are in communication with the steam main pipe, each layer comprises a plurality of steam distribution branch pipes which are uniformly distributed along the circumference of a polygon; and a plurality of vibration-proof and noise-reducing sound attenuation devices, each of which is composed of an inner distribution pipe and an outer distribution pipe which are coaxially arranged, the two ends of the inner distribution pipe and the outer distribution pipe are respectively welded with sealing plates, and the inner distribution pipe and the outer distribution pipe are respectively provided with an inner through hole and an outer through hole which are calculated by fluid mechanics. The application solves the problems that the steam ejector in the prior art cannot work in the ball tank without excessive vibration and noise, and is difficult to install and construct.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heat storage tanks, in particular to a steam energy storage spherical tank with an assembled anti-vibration and noise reduction steam ejector. BACKGROUND

[0002] With the wide application of steam energy storage spherical tanks in the field of industrial heating / steam, the diversity of user-side steam load has put forward higher requirements for the performance of steam ejectors. The traditional steam ejector is prone to excessive vibration and noise under the action of the temperature difference and pressure difference between high-pressure steam and water in the spherical tank, which affects the stable operation of the equipment and the surrounding environment.

[0003] In the prior art, during the use of the heat storage tank:

[0004] The traditional steam ejector usually adopts a simple single-cylinder arrangement without sound attenuation. The anti-vibration and noise reduction measures usually control the size and number of small holes on the single cylinder to control the flow rate of the small holes within a reasonable range, but this method cannot effectively solve the vibration and noise problems of the steam ejector inside the steam energy storage spherical tank.

[0005] Moreover, in the case of limited internal space of the spherical tank, the traditional installation and arrangement method is complex, and the performance of the ejector is difficult to achieve the expected effect.

[0006] Therefore, we have made improvements and proposed a steam energy storage spherical tank with an assembled anti-vibration and noise reduction steam ejector. SUMMARY

[0007] The purpose of the present application is to solve the problems of excessive vibration and noise of the steam ejector in the spherical tank during operation, as well as difficult installation and high construction difficulty in the design of the current heat storage tank.

[0008] In order to achieve the above-mentioned purpose of the application, the following technical solutions are provided:

[0009] A steam energy storage spherical tank with an assembled anti-vibration and noise reduction steam ejector is provided to improve the above-mentioned problems.

[0010] The present application is as follows:

[0011] A steam energy storage spherical tank with an assembled anti-vibration and noise reduction steam ejector, comprising a spherical tank body and a spherical tank manhole capable of entering and exiting the spherical tank body for maintenance, the top end of the spherical tank body is provided with a connecting through hole, further comprising:

[0012] A steam main pipe is drawn out from the connecting through hole at the top of the spherical tank body and extends downward, and the top end of the steam main pipe is provided with a steam inlet;

[0013] At least one steam distribution pipe is communicated with the steam main pipe, and each layer comprises a plurality of steam distribution branch pipes which are uniformly distributed along the polygonal circumference;

[0014] A plurality of vibration-proof noise reduction silencers are each composed of an inner distribution pipe and an outer distribution pipe which are coaxially arranged, both ends of the inner distribution pipe and the outer distribution pipe are welded with sealing plates, and inner through holes and outer through holes are respectively arranged on the inner distribution pipe and the outer distribution pipe through fluid mechanics calculation, and the inner distribution pipe is sleeved on the end of the steam distribution branch pipe and is in sealed connection with the steam distribution branch pipe.

[0015] As the preferred technical scheme of the present application, the inner through holes and the outer through holes are staggered, and the diameters of the inner through holes and the outer through holes are gradiently decreased along the steam flow direction.

[0016] As the preferred technical scheme of the present application, a flow guide cone is arranged between the steam distribution branch pipe and the vibration-proof noise reduction silencer, the large end of the flow guide cone is welded with the steam distribution branch pipe, and the small end of the flow guide cone is inserted into the inner distribution pipe.

[0017] As the preferred technical scheme of the present application, the steam ejector adopts a polygonal multi-ring arrangement structure, the steam main pipe extends along the inner wall of the spherical tank body in a ring shape, forming a ring-shaped main pipe section, the ring-shaped main pipe section is divided into at least two concentric ring-shaped branch pipes, and each ring-shaped branch pipe is connected with the vibration-proof noise reduction silencer through a plurality of steam distribution branch pipes.

[0018] As the preferred technical scheme of the present application, the construction method steps of assembling the steam ejector in the spherical tank body are as follows:

[0019] Step one: prefabricating the vibration-proof noise reduction silencers and the steam distribution pipes in the factory;

[0020] Step two: transporting the vibration-proof noise reduction silencers and the steam distribution pipes into the spherical tank body through the manhole of the spherical tank;

[0021] Step three: penetrating the steam main pipe through the top of the spherical tank body, welding and sealing the outer surface of the upper end of the steam main pipe and the connecting through hole, and adjusting the diameter of the outermost ring-shaped branch pipe according to the diameter of the spherical tank body;

[0022] Step four: assembling the inner distribution pipe and the outer distribution pipe in each ring-shaped branch pipe, welding the flow guide cones at both ends of the inner distribution pipe with each other, and assembling the inner distribution pipe and the outer distribution pipe on the corresponding steam distribution pipe to ensure stable connection.

[0023] Compared with the prior art, the present application has the following beneficial effects:

[0024] In the scheme of the present application:

[0025] The steam ejector assembly adopts a polygonal multi-ring arrangement, one or more layers of structure, can balance the steam distribution, make the steam flow rate decrease, keep the flow rate of each silencing component consistent, avoid the local steam flow rate too high causing the spherical tank body resonance;

[0026] The structure design of the anti-vibration noise reduction silencing component for steam injection, the steam ejector assembly uses the anti-vibration noise reduction silencing component as the steam injection component, uses the double-cylinder silencing component of the inner distribution pipe and the outer distribution pipe, and significantly reduces the vibration and noise through the optimization design of the number and size of the openings.

[0027] The modular assembly method, the various parts for assembly in the steam ejector assembly and the anti-vibration noise reduction silencing component are prefabricated in the factory, assembled in the spherical tank body through the manhole of the spherical tank in the field, reduces the high-altitude operation and the complex welding process and the engineering quantity, and reduces the construction difficulty and the construction quantity.

[0028] Adaptive design: by adjusting the number of rings and the number of polygonal sides of the steam ejector assembly, the internal space requirements of spherical tanks of different specifications can be met to meet various working conditions. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 A steam energy storage spherical tank with an assembled anti-vibration noise reduction steam ejector is provided.

[0030] Figure 2 A steam energy storage spherical tank with an assembled anti-vibration noise reduction steam ejector is provided.

[0031] Figure 3 A steam energy storage spherical tank with an assembled anti-vibration noise reduction steam ejector is provided.

[0032] Figure 4 A steam energy storage spherical tank with an assembled anti-vibration noise reduction steam ejector is provided.

[0033] Figure 5 A steam energy storage spherical tank with an assembled anti-vibration noise reduction steam ejector is provided. Figure 4 A steam energy storage spherical tank with an assembled anti-vibration noise reduction steam ejector is provided.

[0034] Figure 6 A steam energy storage spherical tank with an assembled anti-vibration noise reduction steam ejector is provided.

[0035] Figure 7 A steam energy storage spherical tank with an assembled anti-vibration noise reduction steam ejector is provided. Figure 6Right front section view.

[0036] The image shows:

[0037] 1. Steam header; 2. Steam distribution pipe; 3. Vibration damping and noise reduction components; 4. Guide cone; 5. Inner distribution pipe; 6. Outer distribution pipe; 7. Sealing plate; 8. Spherical tank manhole; 9. Inner through hole; 10. Outer through hole; 11. Spherical tank body; 12. Steam inlet. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention.

[0039] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the claimed invention, but merely illustrates some embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention. It should be noted that, unless otherwise specified, the embodiments, features, and technical solutions in the embodiments of the present invention can be combined with each other.

[0040] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0041] like Figures 1-7 As shown, this embodiment proposes a steam energy storage spherical tank with an assembled anti-vibration and noise-reducing steam ejector, including a spherical tank body 11 and a spherical tank manhole 8 for accessing and maintaining the spherical tank body 11. The top of the spherical tank body 11 is provided with a connecting through hole, and it also includes:

[0042] Steam header 1 extends downward from the connecting through hole at the top of the spherical tank 11, and steam inlet 12 is provided at the top of the steam header 1.

[0043] At least one layer of steam distribution pipe 2 is connected to the steam main pipe 1, and each layer contains multiple steam distribution branch pipes evenly distributed along the circumference of the polygon.

[0044] Multiple vibration-damping and noise-reducing components 3 are provided. Each vibration-damping and noise-reducing component 3 consists of an inner distribution pipe 5 and an outer distribution pipe 6 arranged coaxially. The two ends of the inner distribution pipe 5 and the outer distribution pipe 6 are respectively welded with sealing plates 7. The inner distribution pipe 5 and the outer distribution pipe 6 are respectively provided with inner through holes 9 and outer through holes 10 calculated by fluid dynamics. The inner distribution pipe 5 is fitted into the end of the steam distribution branch pipe and sealed to it.

[0045] Through the double-barrel opening design of the inner distribution pipe 5 and the outer distribution pipe 6 of the anti-vibration noise reduction silencer 3, the steam is diffused and buffered multiple times during the spraying process, the noise is reduced by about 30%, the impact force and vibration transmission during steam spraying are reduced, and the vibration amplitude is reduced by about 40%.

[0046] The anti-vibration noise reduction silencer 3 is made of a material that is resistant to high temperature and high humidity, and has good air permeability and can well absorb vibration during actual use.

[0047] The inner through hole 9 and the outer through hole 10 are arranged in a staggered manner, and the hole diameters of the inner through hole 9 and the outer through hole 10 decrease in a gradient along the steam flow direction.

[0048] A flow guide cone 4 is arranged between the steam distribution branch pipe and the anti-vibration noise reduction silencer 3, the large end of the flow guide cone 4 is welded to the steam distribution branch pipe, and the small end of the flow guide cone 4 extends into the inner distribution pipe 5.

[0049] The flow guide cone 4 is welded to the end of the inner distribution pipe 5 to guide the smooth transition of the steam to the anti-vibration noise reduction silencer 3.

[0050] The steam ejector adopts a polygonal multi-ring arrangement structure, the steam main pipe extends along the inner wall of the spherical tank body 11 in a ring shape, forming a ring-shaped main pipe section, and the ring-shaped main pipe section branches into at least two concentric ring-shaped branch pipes, each ring-shaped branch pipe is connected to the anti-vibration noise reduction silencer 3 through a plurality of steam distribution branch pipes.

[0051] The included angle A between adjacent steam distribution branch pipes in the same layer satisfies A = 360° / N, where N is the number of steam distribution branch pipes in the layer and N≥3.

[0052] The construction method steps of the assembly of the steam ejector in the spherical tank body 11 are as follows:

[0053] Step one: prefabricate the anti-vibration noise reduction silencer 3 and the steam distribution pipe 2 in the factory;

[0054] Step two: transport the anti-vibration noise reduction silencer 3 and the steam distribution pipe 2 to the inside of the spherical tank body 11 in sections through the manhole 8 of the spherical tank;

[0055] Step three: pass the steam main pipe 1 through the top of the spherical tank body 11, and weld and seal the outer surface of the upper end of the steam main pipe 1 and the connecting through hole, and adjust the diameter of the outermost ring-shaped branch pipe according to the diameter of the spherical tank body 11;

[0056] Step four: assemble the inner distribution pipe 5 and the outer distribution pipe 6 in each ring-shaped branch pipe, weld the flow guide cones 4 at both ends of the inner distribution pipe 5 to each other, and assemble them on the corresponding steam distribution pipe 2 to ensure stable connection.

[0057] The operation process of the entire steam ejector installed in the spherical tank body 11 is as follows:

[0058] (1) Steam main pipe 1 lead-in: Steam main pipe 1 is led out from the top of the spherical tank body 11 and connected downward to the steam ejector assembly;

[0059] (2) Polygonal multi-ring arrangement: According to the internal space of the spherical tank body 11 and the steam flow demand, the number of rings and the number of polygonal sides of the steam ejector assembly are determined, and each ring is composed of a plurality of anti-vibration noise reduction silencers 3, forming a single-layer or multi-layer structure;

[0060] (3) Anti-vibration noise reduction silencer 3 installation: The anti-vibration noise reduction silencer 3 is pre-fabricated in the factory, and is quickly assembled and fixed inside the spherical tank through the spherical tank manhole 8 on site;

[0061] (4) Steam distribution optimization: Steam is evenly distributed to each anti-vibration noise reduction silencer 3 through the steam distribution pipe 2, avoiding local high steam flow velocity causing vibration and noise;

[0062] (5) Operation debugging: After installation, the operation debugging of the steam ejector assembly is carried out to ensure uniform steam distribution and normal operation of the anti-vibration noise reduction silencer 3.

[0063] Through the welding assembly of the anti-vibration noise reduction silencer 3, the inner and outer distribution pipes 5 and 6, and the sealing plate 7, the hole design of the inner and outer distribution pipes of the anti-vibration noise reduction silencer 3 can effectively disperse the steam impact force and reduce the energy transmission of the vibration source. The assembly adopts a polygonal multi-ring arrangement to balance the steam distribution, so that the steam flow rate gradually decreases from the steam main pipe 1 through the steam distribution pipe 2 to the multi-ring and then to the inner and outer cylinders of the silencer assembly, avoiding local high steam flow rate causing resonance. The noise reduction rate can reach more than 30%, the equipment operation stability is improved, and the vibration amplitude is reduced by about 40%.

[0064] At the same time, the anti-vibration noise reduction silencer 3 is pre-fabricated in the factory, and is assembled inside the spherical tank body 11 through the spherical tank manhole 8 on site, reducing high-altitude work and complex welding procedures, reducing construction difficulty, and ensuring the sealing stability of welding. Unlike existing welding, the weld is reduced by about 60%.

[0065] Firstly, the hole parameters of the inner and outer through holes 9 and 10 are optimized through CFD simulation, so that the steam flow rate gradient is controlled within the range of 0.5-1.2 m / s;

[0066] Secondly, the polygonal multi-ring arrangement makes the steam flow field present a gradually expanding distribution, and the maximum interlayer flow rate difference is ≤15%;

[0067] Thirdly, the anti-vibration noise reduction silencer 3 and the steam distribution pipe 2 adopt a flange quick connection structure, and the single-ring assembly time is shortened by 40%.

[0068] One specific embodiment is as follows:

[0069] The steam ejector is installed in a spherical tank with a diameter of 15 meters:

[0070] (1) The steam main pipe 1 is made of a DN200 seamless steel pipe, which is bent and arranged along the inner cavity of the spherical tank body 11 as a layer annular branch pipe;

[0071] (2) 8 groups of anti-vibration noise reduction silencers 3 are arranged at each layer, the inner distribution pipe 5 has a hole diameter of φ20mm, the outer distribution pipe 6 has a hole diameter of φ30mm, and the hole spacing d=50mm;

[0072] (3) The cone angle of the flow guide cone body 4 is θ=15°, and the material is selected to be 316L stainless steel;

[0073] (4) When assembling on site, the dome crane of the spherical tank body 11 is used in cooperation with the hydraulic lifting platform to complete the assembly of each part of the steam ejector assembly.

[0074] After testing the device:

[0075] The noise value is reduced from 98dB(A) to 68dB(A), with a reduction of 30.6%; the vibration acceleration is reduced from 0.8g to 0.48g, with a reduction of 40%.

[0076] In addition, based on the pre-treatment in the factory, the construction period of a single spherical tank with an internal steam ejector is shortened from 15 days in the traditional scheme to 6 days, greatly enhancing the assembly efficiency.

[0077] The above examples are only used to illustrate the present application and are not limited to the technical solutions described in the present application. Although the present application has been described in detail with reference to the above embodiments, the present application is not limited to the above specific embodiments, and therefore any modification or equivalent replacement of the present application; all technical solutions and improvements that do not deviate from the spirit and scope of the application are covered in the scope of the claims of the present application.

Claims

1. A steam accumulator with an assembled anti-vibration noise-reducing steam ejector, comprising a spherical tank body (11) and a spherical tank manhole (8) capable of being accessed for maintenance, characterized in that, The top end of the spherical tank body (11) is provided with a connecting through hole, and further comprises: a steam main pipe (1) which is led out from the connecting through hole at the top of the spherical tank body (11) and extends downward, the top end of the steam main pipe (1) being provided with a steam inlet (12); at least one layer of steam distribution pipes (2) which are in communication with the steam main pipe (1), each layer comprising a plurality of steam distribution branch pipes which are uniformly distributed along the circumference of a polygon; a plurality of anti-vibration noise reduction silencers (3), each of which is composed of an inner distribution pipe (5) and an outer distribution pipe (6) which are coaxially arranged, both ends of the inner distribution pipe (5) and the outer distribution pipe (6) being welded with sealing plates (7), respectively, and the inner distribution pipe (5) and the outer distribution pipe (6) being provided with inner through holes (9) and outer through holes (10) which are calculated by fluid mechanics, respectively, and the inner distribution pipe (5) is sleeved on the end of the steam distribution branch pipe and is in sealed connection with the same; the inner through holes (9) and the outer through holes (10) are arranged in a staggered manner, and the diameters of the inner through holes (9) and the outer through holes (10) decrease in a gradient along the steam flow direction; the steam ejector adopts a polygonal multi-ring arrangement structure, the steam main pipe extends along the inner wall of the spherical tank body (11) in a ring shape, forming a ring-shaped main pipe section, the ring-shaped main pipe section branches into at least two layers of concentric ring-shaped branch pipes, and each layer of ring-shaped branch pipes is connected with the anti-vibration noise reduction silencer (3) through a plurality of steam distribution branch pipes.

2. The steam accumulators with assembled anti-vibration noise reduction steam ejectors according to claim 1, characterized in that, A flow guide cone (4) is arranged between the steam distribution branch pipe and the anti-vibration noise reduction silencer (3), the large end of the flow guide cone (4) is welded with the steam distribution branch pipe, and the small end of the flow guide cone (4) extends into the inner distribution pipe (5).

3. The steam stored energy spherical tank with assembled vibration-proof and noise-reduction steam ejector according to claim 2, characterized in that, The construction method steps of the assembly of the steam ejector in the spherical tank body (11) are as follows: Step one: prefabricate the anti-vibration noise reduction silencer (3) and the steam distribution pipe (2) in the factory; Step two: transport the anti-vibration noise reduction silencer (3) and the steam distribution pipe (2) to the inside of the spherical tank body (11) in sections through the manhole (8) of the spherical tank; Step three: pass the steam main pipe (1) through the top of the spherical tank body (11), and weld and seal the upper end of the steam main pipe (1) with the connecting through hole, and adjust the diameter of the outermost ring-shaped branch pipe according to the diameter of the spherical tank body (11); Step four: assemble the inner distribution pipe (5) and the outer distribution pipe (6) in each ring-shaped branch pipe, weld the flow guide cones (4) at both ends of the inner distribution pipe (5) with each other, and assemble them on the corresponding steam distribution pipe (2) to ensure stable connection.

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