A droplet / salt particle separator for a salt cavern gas storage system

Abstract

This invention discloses a droplet / salt particle separator for a salt cavern gas storage system, aiming to solve the problem of poor economic efficiency of existing droplet / salt particle separators in salt cavern gas storage systems when dealing with corrosive compressed air from salt caverns. The separator comprises a preliminary separation module that utilizes the differences in physical inertia and compressibility of different types of substances, and the mechanical collision principle based on the initial high speed of compressed air, to initially eliminate the kinetic energy of droplets and salt particles in the compressed air, thus achieving initial screening. This pre-screening scheme is low-cost and avoids potential maintenance costs for delicate components. Based on this, the compressed air after initial screening by the preliminary separation module has a low droplet and salt particle content, and is further filtered by a deep separation module to obtain compressed air that meets the requirements. The working pressure and corrosion of the first cyclone separator in the deep separation module are effectively alleviated, thereby improving economic efficiency and reducing maintenance costs.

Description

Technical Field

[0001] This invention relates to a droplet / salt particle separator for a salt cavern gas storage system, belonging to the field of salt cavern gas storage technology. Background Technology

[0002] Compressed air energy storage helps the power grid to "shave peaks and fill valleys" and alleviate electricity pressure. However, the cost of building artificial gas storage facilities alone is too high. Therefore, salt caverns have emerged as an alternative to gas storage facilities in the industry.

[0003] The droplets from natural salt caverns are rich in salt particles, high-humidity brine, and gases such as H2S seeping from the surrounding rock strata, which can corrode the inner walls of the pipelines in salt cavern gas storage systems. Therefore, the industry has developed a method using cyclone separators to separate droplets from the compressed air during the gas extraction expansion stage to remove harmful droplets and ensure the safety of the salt cavern gas storage system. However, the delicate components inside the cyclone separator are easily corroded and damaged under prolonged droplet corrosion, and cyclone separators are relatively expensive, resulting in reduced economic efficiency of the droplet separation process.

[0004] Therefore, the droplet / salt particle separators in existing salt cavern gas storage systems are not economically viable when dealing with corrosive compressed air from salt caverns. Summary of the Invention

[0005] The purpose of this application is to overcome the shortcomings of the prior art and provide a droplet / salt particle separator for a salt cavern gas storage system with better economic efficiency in the face of corrosive salt cavern compressed air.

[0006] To achieve the above objectives, this application employs the following technical solution:

[0007] This application provides a droplet / salt particle separator for a salt cavern gas storage system, comprising,

[0008] A preliminary separation module is connected to the intake pipe. The preliminary separation module includes a first guide plate located at the outlet of the intake pipe. The first guide plate is used to change the flow angle of the compressed air. The preliminary separation module is also provided with a curved path flow channel connecting the outlet of the first guide plate. Multiple stages of second baffles are distributed along the curved path flow channel. The second baffles have vent holes for the compressed air to flow.

[0009] The deep separation module is connected to the outlet and exhaust pipe of the preliminary separation module, respectively. The deep separation module is equipped with a first cyclone separator for separating droplets from the compressed air.

[0010] In some embodiments of this application, the first guide plate is an arc-shaped plate, the inner arc surface of the first guide plate faces the outlet of the air intake pipe, the edge of the first guide plate faces the curved path flow channel, and the compressed air is guided from the inner arc surface of the first guide plate to the edge.

[0011] In some embodiments of this application, the second baffle plate includes a bend section and a hollow section with the vent hole. The hollow section is set in accordance with the direction of compressed air flow in the curved path channel. The hollow section and the bend section have a smooth transition. The bending direction of the bend section is opposite to the direction of compressed air flow in the curved path channel.

[0012] In some embodiments of this application, the preliminary separation module and the deep separation module are connected in series on the axis of the same tube, and the preliminary separation module and the deep separation module are connected through a tube core flow channel formed inside the tube;

[0013] The preliminary separation module further includes a first annular plate and a second annular plate arranged along the pipe wall, the first annular plate, the second annular plate and the pipe wall forming the curved path flow channel; the bend segment faces the core flow channel.

[0014] In some embodiments of this application, the air intake pipe is radially connected to the pipe body, the first guide plate is also symmetrically distributed radially along the pipe body, and the second baffle plate is symmetrically distributed on both sides of the first guide plate.

[0015] In some embodiments of this application,

[0016] The surface of the second annular plate is inclined towards the flow channel of the tube core, and the droplets drip from the inclined edge of the second annular plate and flow into the drain outlet;

[0017] The surface of the first annular plate is inclined away from the flow channel of the tube core. Several second drain ports are opened on the inclined edge of the first annular plate corresponding to the position of the second baffle plate. Droplets flow into the drain port through the second drain ports.

[0018] In some embodiments of this application, a drain pipe is also included, the inlet of which is used to collect droplets within the deep separation module;

[0019] The drain pipe passes through the structural hole in the second annular plate, and the first annular plate has a first drain outlet at the position corresponding to the outlet of the drain pipe. The liquid droplets in the drain pipe flow into the drain outlet through the first drain outlet, and the part of the drain pipe located between the second drain outlet and the structural hole is located at the end of the curved path flow channel.

[0020] In some embodiments of this application, the deep separation module includes a first baffle for intercepting the flow channel of the core tube, the first cyclone separator is mounted on the first baffle, and the inlet of the first cyclone separator is connected to the flow channel of the core tube; the deep separation module also includes a second baffle cover located on the outlet side of the first cyclone separator, the second baffle cover and the first baffle are spaced apart by a certain distance to form a second flow channel, the second flow channel is connected to the inlet of the second cyclone separator, and the outlet of the second cyclone separator is connected to the exhaust pipe.

[0021] In some embodiments of this application, the first baffle forms a converging cavity corresponding to the axis of the pipe body, the inlet of the first cyclone separator is located in the converging cavity, the second baffle covers the converging cavity and the inner cavity of the first cyclone separator in a semi-enclosed manner, and the outlet of the first cyclone separator is located in the inner cavity; an outer cavity is formed between the outer wall of the inner cavity and the inner wall of the pipe body, the inner cavity and the outer cavity are connected, and the second cyclone separator is located in the outer cavity.

[0022] In some embodiments of this application, a first liquid collecting plate for collecting liquid droplets from the outer cavity is further provided between the outer wall of the inner cavity and the inner wall of the tube; a first liquid collecting port is opened on the first liquid collecting plate, and the plate surface of the first liquid collecting plate is inclined to the first liquid collecting port; the first baffle also includes a second liquid collecting plate located between the outer wall of the gathering cavity and the inner wall of the tube, the second liquid collecting plate is opened to the second liquid collecting port, the plate surface of the second liquid collecting plate is inclined to the second liquid collecting port, and the position of the second liquid collecting port corresponds to the first liquid collecting port;

[0023] The droplet / salt separator also includes a drain pipe, with its two ends connected to the second collection port and the drain outlet, respectively.

[0024] Compared with the prior art, the beneficial effects achieved by this application are as follows:

[0025] The droplet / salt particle separator of the salt cavern gas storage system provided in this application uses a preliminary separation module that relies on the differences in physical inertia and compressibility of different types of substances and the mechanical collision principle based on the initial high speed of compressed air to initially eliminate the kinetic energy of droplets and salt particles in the compressed air, thereby achieving initial screening. This pre-screening scheme has low cost and avoids potential maintenance costs for delicate components. Based on this, the compressed air after initial screening by the preliminary separation module has a low content of droplets and salt particles. After further filtration by the deep separation module, the compressed air meets the requirements. The working pressure and corrosion of the first cyclone separator in the deep separation module are effectively alleviated, thereby improving economic efficiency and reducing maintenance costs. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a quarter-section view of the droplet / salt particle separator of the salt cavern gas storage system provided in this embodiment;

[0028] Figure 2 yes Figure 1 An external schematic diagram of the tube shown;

[0029] Figure 3 yes Figure 1 The preliminary separation module shown in the diagram does not include a schematic diagram of the ventilation holes.

[0030] Figure 4 yes Figure 3 A bottom view;

[0031] Figure 5 yes Figure 3 Top view;

[0032] Figure 6 This is a schematic diagram of the second baffle plate;

[0033] Figure 7 yes Figure 1 A schematic diagram of the preliminary separation module shown in the figure;

[0034] Figure 8 yes Figure 1 A half-section view of the depth separation module shown in the diagram;

[0035] Figure 9 yes Figure 1 Schematic diagram of the deep separation module;

[0036] Figure 10 yes Figure 9 A quarter-section view of the first baffle and the second baffle cover shown in the figure;

[0037] Figure 11 yes Figure 10 A schematic diagram of the opening of the cyclone fixing hole shown in the figure;

[0038] Figure 12 This is a cross-sectional schematic diagram showing the direction of compressed air flow in the deep separation module;

[0039] In the picture:

[0040] 1. Pipe body; 1-1. Inlet pipe; 1-2. Exhaust pipe; 1-3. Drain outlet; 1-4. Pipe core flow channel;

[0041] 2. Preliminary separation module; 2-1. First annular plate; 2-2. Second baffle plate; 2-2-1. Hollow section; 2-2-2. Corner section; 2-3. Second annular plate; 2-4. First guide plate; 2-5. First drain port; 2-6. Second drain port; 2-7. Vent hole; 2-8. Curved path flow channel; 2-9. Structural hole;

[0042] 3-Drain pipe;

[0043] 4-Deep separation module; 4-1, First baffle; 4-1-1, Gathering cavity; 4-1-2, Second liquid collecting plate; 4-1-3, Second liquid collecting port; 4-2-First liquid collecting plate; 4-2-1, First liquid collecting port; 4-2-2, First cyclone separator fixing hole; 4-2-3, Inner and outer cavity through hole; 4-2-4, Second cyclone separator fixing hole; 4-3, Second cyclone separator; 4-4, Cyclone separator drain port; 4-5, Second baffle cover; 4-5-1, Inner cavity; 4-5-2, Outer cavity; 4-6, Inner cavity drain port; 4-9, First cyclone separator; 4-10, Second flow channel. Detailed Implementation

[0044] The technical solutions of this application / the embodiments thereof will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application / the embodiments thereof, and not all embodiments thereof. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this application / the application thereof or its application or use. Example 1

[0045] This embodiment provides a droplet / salt particle separator for a salt cavern gas storage system to solve the problem of poor economic efficiency in the prior art when dealing with corrosive salt cavern compressed air.

[0046] refer to Figures 1 to 12 The droplet / salt particle separator of the salt cavern gas storage system provided in this embodiment includes a preliminary separation module 2, which is connected to the air inlet pipe 1-1. The preliminary separation module 2 includes a first guide plate 2-4 located at the outlet of the air inlet pipe 1-1. The first guide plate 2-4 is used to change the flow angle of the compressed air. The preliminary separation module 2 is also provided with a curved path flow channel 2-8 connected to the outlet of the first guide plate 2-4. Multiple second baffle plates 2-2 are distributed in series along the curved path flow channel 2-8. The second baffle plates 2-2 have vent holes 2-7 for compressed air to flow.

[0047] The deep separation module 4 is connected to the outlet and exhaust pipe 1-2 of the preliminary separation module 2 respectively. The deep separation module 4 is equipped with a first cyclone separator 4-9 for separating droplets from compressed air.

[0048] The intake pipe 1-1 is used to input compressed air stored in the salt cavern, and the preliminary separation module 2 is used to perform preliminary separation of the compressed air to reduce the content of large droplets and salt particles in the compressed air. In this embodiment, it was found that the compressed air stored in the salt cavern enters the droplet / salt particle separator at high speed. However, the inertia of air is low, while the inertia of droplets and salt particles is much greater than that of air. Therefore, the first guide plate 2-4 located at the outlet of the intake pipe 1-1 can easily change the flow direction of the airflow. Due to inertia, droplets and salt particles have a high probability of colliding with the first guide plate 2-4, thereby completing the separation of droplets and salt particles from the compressed air. The airflow flows into the curved path channel 2-8 through the first guide plate 2-4. The second baffle plate 2-2 distributed along the channel can perform secondary stripping of the residual droplets and salt particles in the airflow. Compressed air, as a gas, is extremely prone to local density changes compared to fluids. It compresses itself to flow through the vent 2-7. However, droplets and salt particles cannot compress themselves to pass through the vent 2-7. The droplets and salt particles will hit the plate surface between the vents 2-7 and be stripped from the compressed air, or get stuck in the vent 2-7 and lose most of their kinetic energy. Under the slight vibration of the air and the slight action of the air, the second baffle plate 2-2 will fall off from the vent 2-7.

[0049] After preliminary processing by the preliminary separation module 2, most of the liquid droplets and salt particles in the compressed air are removed. The compressed air output from the preliminary separation module 2 is then input into the deep separation module 4. The deep separation module 4 uses the first cyclone separator 4-9 to perform fine filtration on the compressed air, thereby obtaining compressed air with the required content of liquid droplets and salt particles. Since most of the liquid droplets and salt particles are intercepted in the preliminary separation module 2, the working pressure and corrosion of the first cyclone separator 4-9 are effectively alleviated. The preliminary separation module 2 relies on the high-speed characteristics of the compressed air and the difference in physical properties between gas and fluid / solid to screen liquid droplets and salt particles. Therefore, the preliminary separation module 2, like the first cyclone separator 4-9, does not require fine components, resulting in a lower operating cost.

[0050] It is also worth noting that the first guide vane 2-4 can have multiple outlets, which can split the same stream of compressed air into multiple curved path channels 2-8 for parallel processing.

[0051] The curved flow path 2-8 also utilizes the difference in inertia between compressed air and droplets / salt particles to remove droplets / salt particles, and the curved flow path 2-8 can be used to arrange a more complex sequence of second baffles 2-2.

[0052] The droplet / salt particle separator of the salt cavern gas storage system provided in this embodiment relies on the differences in physical inertia and compressibility of different types of substances and the mechanical collision principle based on the initial high speed of compressed air to initially eliminate the kinetic energy of droplets and salt particles in the compressed air, thereby achieving initial screening. This pre-screening scheme has low cost and avoids potential maintenance costs for delicate components. Based on this, the compressed air after initial screening by the preliminary separation module 2 has a low content of droplets and salt particles. After further filtration by the deep separation module 4, the compressed air meets the requirements. The working pressure and corrosion of the first cyclone separator 4-9 in the deep separation module 4 are effectively alleviated, thereby improving economy and reducing maintenance costs. Example 2

[0053] This embodiment provides a droplet / salt particle separator for a salt cavern gas storage system. This embodiment is an optimization based on Embodiment 1 to improve the technical effect and refine the technical solution. For details not described in this embodiment, please refer to Embodiment 1.

[0054] refer to Figures 3 to 5 In one embodiment, the first guide plate 2-4 is an arc-shaped plate, with the inner arc surface of the first guide plate 2-4 facing the outlet of the air intake pipe 1-1, and the edge of the first guide plate 2-4 facing the curved path flow channel 2-8. Compressed air is guided from the inner arc surface of the first guide plate 2-4 to the edge.

[0055] refer to Figure 4 As indicated by the middle arrow, after compressed air enters the first guide plate 2-4, due to the arc-shaped design of the first guide plate 2-4, the high-speed impact of the compressed air creates a high-pressure rebound layer on the plate surface. This gradually guides the compressed air towards the arc-shaped edge of the first guide plate 2-4, causing the inflow direction of the compressed air to deflect by more than 90° compared to the outflow direction. Liquid droplets and salt particles, possessing higher inertia, are less likely to undergo continuous motion to achieve a deflection exceeding 90° under the influence of surrounding airflow. Larger droplets and salt particles with higher particle size and density are more likely to impact the first guide plate 2-4, thus eliminating their kinetic energy and allowing them to fall along the first guide plate 2-4 before being discharged. It is also worth noting that the first guide plate 2-4 guides the compressed air to both sides, with the directions of the compressed air output from both sides being essentially opposite. This ensures that the curved path flow channels 2-8 on both sides avoid mutual conflict, promoting filtration efficiency.

[0056] As one embodiment, reference Figure 4 , Figure 6 and Figure 7The second baffle plate 2-2 includes a bend section 2-2-2 and a hollow section 2-2-1 with a vent 2-7. The hollow section 2-2-1 is set to correspond to the compressed air flow direction in the curved path flow channel 2-8. The hollow section 2-2-1 and the bend section 2-2-2 have a smooth transition. The bending direction of the bend section 2-2-2 is opposite to the compressed air flow direction in the curved path flow channel 2-8.

[0057] refer to Figure 4 and Figure 6 As indicated by the arrows, due to the orientation of the compressed air flow direction in the curved path flow channel 2-8 corresponding to the hollow section 2-2-1, some compressed air propagates through the hollow section 2-2-1, while the other part is guided to the curved section 2-2-2 along the smooth transition between the hollow section 2-2-1 and the angled section 2-2-2. Referring to the principle of the first guide plate 2-4, during the guidance process, droplets and salt particles collide with the second baffle plate 2-2. It is also worth noting that due to the presence of the hollow section 2-2-1, droplets and salt particles in the compressed air tend to pass through the vent 2-7. The presence of the vent 2-7 causes those droplets and salt particles that can just pass through the vent 2-7 to flow more along the curved path flow channel 2-8, which also results in fewer gas droplets and salt particles exiting from the curved section 2-2-2. Similarly, the airflow direction exiting from the curved section 2-2-2 is deflected by more than 90° compared to the airflow entering the second baffle plate 2-2, significantly enhancing the aforementioned initial screening process.

[0058] It is worth noting that, Figure 1 and Figure 3 The vents 2-7 are omitted in the drawing.

[0059] As one embodiment, reference Figure 2 The preliminary separation module 2 and the deep separation module 4 can be housed within the same tube 1, facilitating a dense, side-by-side arrangement of the droplet / salt separators. The tube 1 can be curved, but a straight tube is preferred. The preliminary separation module 2 and the deep separation module 4 are connected via a core flow channel 1-4 formed inside the tube 1. This core flow channel 1-4 is used to transfer the compressed gas after the initial screening. Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 7 The preliminary separation module 2 also includes a first annular plate 2-1 and a second annular plate 2-3 arranged along the wall of the pipe body 1. The first annular plate 2-1, the second annular plate 2-3, and the wall of the pipe body 1 form a curved path flow channel 2-8, making maximum use of the arc areas on both sides of the inside of the pipe body; the bend segment 2-2-2 faces the core flow channel 1-4. Combined with... Figure 1 and Figure 4As shown by the middle arrow, it is easy to see that a portion of the gas travels along the curved path 2-8 to the other end of the curved path 2-8, which is located relative to the first guide plate 2-4, and finally flows into the core channel 1-4. This portion of compressed gas is processed by multiple stages of the second baffle plate 2-2, which basically achieves the purpose of initially removing droplets and salt particles. Another portion of the gas, as it flows through each of the second baffle plates 2-2, bends along the structure of the second baffle plate 2-2 and flows directly into the core channel 1-4 from the bend section 2-2-2. Since the concentration of internal droplets and salt particles of the compressed air that flows directly into the core channel 1-4 from the bend section 2-2-2 along the structure of the second baffle plate 2-2 is lower than that of the compressed air that flows through the hollow section 2-2-1, the compressed gas that flows directly into the core channel 1-4 from the bend section 2-2-2 is approximately the same as the compressed gas that flows into the core channel 1-4 from the end of the curved path channel 2-8. Furthermore, according to the principle mentioned above, the airflow velocity of the second baffle plate 2-2, which is located closer to the head of the curved path flow channel 2-8, is actually faster. The droplet / salt concentration of the airflow output from the bend section 2-2-2 is greater than that of the airflow flowing through the hollow section 2-2-1. Consequently, the airflow output from each bend section 2-2-2 along the curved path flow channel 2-8 has a droplet / salt concentration that is not much different from that at the end of the curved path flow channel 2-8, exhibiting uniformity, and can all converge into the core flow channel 1-4. Of course, this requires those skilled in the art to design reasonably based on this embodiment.

[0060] In one embodiment, the intake pipe 1-1 connects to the pipe body 1 radially, the first guide plate 2-4 is also symmetrically distributed radially along the pipe body 1, and the second baffle plate 2-2 is symmetrically distributed on both sides of the first guide plate 2-4. The curved path flow channel 2-8, in addition to being arranged as... Figure 4 The symmetrical dual-path configuration can also be arranged as a single path that wraps around the wall of pipe body 1, which will not be elaborated here.

[0061] As one embodiment, reference Figure 1 The tube body 1 can be placed vertically, with the deep separation module 4 on top and the preliminary separation module 2 on the bottom. The liquid droplets are collected by gravity to the drain port 1-3 at the bottom end of the tube body 1, while the compressed air that has been deeply filtered by the deep separation module 4 is output to the outside from the exhaust pipe 1-2 at the top end of the tube body 1.

[0062] As one embodiment, reference Figure 3 and Figure 1The arrow below the preliminary separation module 2 indicates that the second annular plate 2-3 is inclined towards the core flow channel 1-4. A small portion of the droplets (mainly those adsorbed onto the tube wall after being freed in the upper layer of the core flow channel 1-4) drips from the inclined edge of the second annular plate 2-3 and flows into the drain port 1-3. The first annular plate 2-1 is inclined away from the core flow channel 1-4. Several second drain ports 2-6 are opened at the inclined edge of the first annular plate 2-1 corresponding to the position of the second baffle plate 2-2. Most of the droplets initially screened out flow into the drain port 1-3 through the second drain ports 2-6. It is easy for those skilled in the art to see that salt particles will be carried away by or dissolved in the droplets and discharged together. For the droplets on the first annular plate 2-1, it is suitable to flow out from the second drain ports 2-6 away from the core flow channel 1-4 to reduce adverse effects. The droplets screened in the initial separation module 2 condense into water droplets and water flow that adhere to the surface of each component of the initial separation module 2 and are subject to gravity. They have lost their small volume and kinetic energy suitable for movement with the airflow and basically converge to the drain outlet 1-3 before being re-vaporized and atomized.

[0063] As one embodiment, it also includes a drain pipe 3, the inlet of which is used to collect droplets within the depth separation module 4; Reference Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 7 The drain pipe 3 passes through the structural hole 2-9 opened in the second annular plate 2-3. The first annular plate 2-1 opens the first drain port 2-5 at the position corresponding to the outlet of the drain pipe 3. The liquid droplets in the drain pipe 3 flow into the drain port 1-3 through the first drain port 2-5. The part of the drain pipe 3 located between the second drain port 2-6 and the structural hole 2-9 is located at the end of the curved path flow channel 2-8.

[0064] First, the droplets inside the depth separation module 4 are uniformly collected through the drain pipe 3. The drain pipe 3 can isolate these formed droplets, preventing them from atomizing and vaporizing inside the pipe body 1. This prevention process continues until the first drain port 2-5 is opened in the first annular plate 2-1. The portion of the drain pipe 3 between the second drain port 2-6 and the structural hole 2-9 is positioned at the end of the curved path flow channel 2-8 to avoid affecting the flow of gas within the curved path flow channel 2-8.

[0065] As one embodiment, reference Figure 1 , Figures 8 to 10The deep separation module 4 includes a first baffle 4-1 for intercepting the core flow channel 1-4, a first cyclone separator 4-9 installed on the first baffle 4-1, and the inlet of the first cyclone separator 4-9 connected to the core flow channel 1-4; the deep separation module 4 also includes a second baffle cover 4-5 located on the outlet side of the first cyclone separator 4-9, the second baffle cover 4-5 and the first baffle 4-1 are spaced apart by a certain distance to form a second flow channel 4-10, the second flow channel 4-10 is connected to the inlet of the second cyclone separator 4-3, and the outlet of the second cyclone separator 4-3 is connected to the exhaust pipe 1-2.

[0066] The flow interception effect of the core flow channel 1-4 ensures that most of the airflow output from the preliminary separation module 2 converges to the first cyclone separator 4-9. Since the deep separation module 4 is integrated within the tube body 1, if the first cyclone separator 4-9 and the second cyclone separator 4-3 are to be arranged in series, space needs to be utilized efficiently. In this embodiment, the first cyclone separator 4-9 and the second cyclone separator 4-3 are physically separated by the isolation of the second baffle cover 4-5, as shown in the reference... Figure 8 The second flow channel 4-10 formed between the second baffle cover 4-5 and the first baffle 4-1 serves as a series flow channel between the first cyclone separator 4-9 and the second cyclone separator 4-3.

[0067] In one embodiment, the first baffle 4-1 forms a gathering cavity 4-1-1 corresponding to the axis of the pipe body 1. The inlet of the first cyclone separator 4-9 is located in the gathering cavity 4-1-1. The second baffle cover 4-5 forms a semi-closed gathering cavity 4-1-1 and an inner cavity 4-5-1 of the first cyclone separator 4-9. The outlet of the first cyclone separator 4-9 is located in the inner cavity 4-5-1. An outer cavity 4-5-2 is formed between the outer wall of the inner cavity 4-5-1 and the inner wall of the pipe body 1. The inner cavity 4-5-1 and the outer cavity 4-5-2 are connected. The second cyclone separator 4-3 is located in the outer cavity 4-5-2.

[0068] The first baffle 4-1 forms a converging cavity 4-1-1 corresponding to the axis of the tube body 1, ensuring the uniformity of the converging airflow in all directions. The converging cavity 4-1-1 also pre-compresses and accelerates the airflow, reducing the load on the first cyclone separator 4-9.

[0069] The inner and outer cavities formed by the second baffle 4-5 divide the inner space of the tube body 1 into two parts on a nearly flat plane, improving the space utilization rate. Furthermore, the reverse bend of the second flow channel 4-10 helps prevent individual droplets / salt particles from flowing into the exhaust pipe 1-2 with the airflow. Individual droplets that accidentally take off with the airflow will be deposited at the bottom of the second flow channel 4-10.

[0070] To facilitate the collection of droplets within the depth separation module 4, as one embodiment, refer to... Figure 1 , Figure 8 , Figure 9 , Figure 10 and Figure 11 A first liquid collecting plate 4-2 for collecting droplets from the outer cavity 4-5-2 is provided between the outer wall of the inner cavity 4-5-1 and the inner wall of the tube body 1. A first liquid collecting port 4-2-1 is opened on the first liquid collecting plate 4-2, and the plate surface of the first liquid collecting plate 4-2 is inclined to the first liquid collecting port 4-2-1 to facilitate the collection of droplets. The first baffle 4-1 also includes a second liquid collecting plate 4-1-2 located between the outer wall of the gathering cavity 4-1-1 and the inner wall of the tube body 1. A second liquid collecting port 4-1-3 is opened on the second liquid collecting plate 4-1-2, and the plate surface of the second liquid collecting plate 4-1-2 is inclined to the second liquid collecting port 4-1-3 to facilitate the collection of droplets. The position of the second liquid collecting port 4-1-3 corresponds to the first liquid collecting port 4-2-1. The two ends of the drain pipe 3 are respectively connected to the second liquid collecting port 4-1-3 and the drain outlet 1-3.

[0071] Among them, the first liquid collecting plate 4-2, in addition to collecting the droplets at the top of the collecting tube 1, refers to... Figure 9 It also collects the droplets collected at the cyclone outlet 4-4 of the second cyclone separator 4-3.

[0072] As one embodiment, reference Figure 8 , Figure 10 and Figure 12 The first baffle 4-1, located on the top wall of the gathering cavity 4-1-1, is configured with a double-layer structure. This double-layer structure facilitates the fixation of the first cyclone separator 9. The interlayer can be used to collect droplets collected from the cyclone sub-drainage port 4-4 of the first cyclone separator 9. (Refer to...) Figure 9 The inner cavity 4-5-1 has an inner cavity drain port 4-6 on its cavity wall. The lower layer of the double-layer structure, the inner cavity drain port 4-6 and the first liquid collection plate 4-2 are smoothly transitioned.

[0073] As one embodiment, reference Figure 10 and Figure 11 The top walls of the first liquid collecting plate 4-2 and the gathering cavity 4-1-1 are set as an integrated structure, and are uniformly provided with a first cyclone sub-fixing hole 4-2-2 for installing the first cyclone separator 4-9 and a second cyclone sub-fixing hole 4-2-4 for installing the second cyclone separator 4-3.

[0074] refer to Figure 8 , Figure 10 and Figure 11 The second flow channel 4-10 includes internal and external cavity through holes 4-2-3, which are opened on the integrated plate mentioned above to achieve integrated processing.

[0075] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are used only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0076] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," "located in," "equipped with," "located in," "installed," "set," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances. "Hinged connection" includes "rotational connection."

[0077] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A droplet / salt particle separator for a salt cavern gas storage system, characterized in that, include, Preliminary The separation module (2) is connected to the intake pipe (1-1). The preliminary separation module (2) includes a first guide plate (2-4) located at the outlet of the intake pipe (1-1). The first guide plate (2-4) is used to change the flow angle of the compressed air. The preliminary separation module (2) is also provided with a curved path flow channel (2-8) connected to the outlet of the first guide plate (2-4). Multiple second baffles (2-2) are distributed in series along the curved path flow channel (2-8). The second baffles (2-2) have vent holes (2-7) for the compressed air to flow. The deep separation module (4) is connected to the outlet and exhaust pipe (1-2) of the preliminary separation module (2) respectively. The deep separation module (4) is provided with a first cyclone separator (4-9) for separating droplets from the compressed air. The second baffle plate (2-2) includes a bend section (2-2-2) and a hollow section (2-2-1) with the vent (2-7) formed therein. The hollow section (2-2-1) is set in accordance with the direction of compressed air flow in the curved path channel (2-8). The hollow section (2-2-1) and the bend section (2-2-2) are smoothly transitioned. The bending direction of the bend section (2-2-2) is opposite to the direction of compressed air flow in the curved path channel (2-8). The preliminary separation module (2) and the deep separation module (4) are connected in series on the axis of the same tube (1), and the preliminary separation module (2) and the deep separation module (4) are connected through the tube core flow channel (1-4) formed inside the tube (1); The preliminary separation module (2) further includes a first annular plate (2-1) and a second annular plate (2-3) arranged along the pipe wall of the pipe body (1), the first annular plate (2-1), the second annular plate (2-3) and the pipe wall of the pipe body (1) forming the curved path flow channel (2-8); the bend segment (2-2-2) faces the core flow channel (1-4). The air intake pipe (1-1) is connected to the pipe body (1) radially, the first guide plate (2-4) is also symmetrically distributed radially along the pipe body (1), and the second baffle plate (2-2) is symmetrically distributed on both sides of the first guide plate (2-4). The plate surface of the second annular plate (2-3) is inclined towards the tube core flow channel (1-4), and the droplets drip from the inclined edge of the second annular plate (2-3) and flow into the drain outlet (1-3). The first annular plate (2-1) is inclined away from the flow channel (1-4) of the tube core. Several second drain ports (2-6) are opened on the inclined edge of the first annular plate (2-1) corresponding to the position of the second baffle plate (2-2). The droplets flow into the drain port (1-3) through the second drain ports (2-6).

2. The droplet / salt particle separator of the salt cavern gas storage system according to claim 1, characterized in that, The first guide plate (2-4) is an arc-shaped plate. The inner arc surface of the first guide plate (2-4) faces the outlet of the air intake pipe (1-1), and the edge of the first guide plate (2-4) faces the curved path flow channel (2-8). The compressed air is guided from the inner arc surface of the first guide plate (2-4) to the edge.

3. The droplet / salt particle separator for the salt cavern gas storage system according to claim 1, characterized in that, It also includes a drain pipe (3), the inlet of which is used to collect droplets inside the deep separation module (4); The drain pipe (3) passes through the structural hole (2-9) opened in the second annular plate (2-3). The first annular plate (2-1) opens a first drain outlet (2-5) at the position corresponding to the outlet of the drain pipe (3). The liquid droplets in the drain pipe (3) flow into the drain outlet (1-3) through the first drain outlet (2-5). The part of the drain pipe (3) located between the second drain outlet (2-6) and the structural hole (2-9) is located at the end of the curved path flow channel (2-8).

4. The droplet / salt particle separator of the salt cavern gas storage system according to claim 1, characterized in that, The deep separation module (4) includes a first baffle (4-1) for intercepting the core flow channel (1-4), the first cyclone separator (4-9) is installed on the first baffle (4-1), and the inlet of the first cyclone separator (4-9) is connected to the core flow channel (1-4); the deep separation module (4) also includes a second baffle cover (4-5) located on the outlet side of the first cyclone separator (4-9), the second baffle cover (4-5) and the first baffle (4-1) are spaced apart by a certain distance to form a second flow channel (4-10), the second flow channel (4-10) is connected to the inlet of the second cyclone separator (4-3), and the outlet of the second cyclone separator (4-3) is connected to the exhaust pipe (1-2).

5. The droplet / salt particle separator of the salt cavern gas storage system according to claim 4, characterized in that, The first baffle (4-1) forms a gathering cavity (4-1-1) corresponding to the axis of the pipe body (1). The inlet of the first cyclone separator (4-9) is located in the gathering cavity (4-1-1). The second baffle cover (4-5) forms a semi-enclosed inner cavity (4-5-1) of the gathering cavity (4-1-1) and the first cyclone separator (4-9). The outlet of the first cyclone separator (4-9) is located in the inner cavity (4-5-1). An outer cavity (4-5-2) is formed between the outer wall of the inner cavity (4-5-1) and the inner wall of the pipe body (1). The inner cavity (4-5-1) and the outer cavity (4-5-2) are connected. The second cyclone separator (4-3) is located in the outer cavity (4-5-2).

6. The droplet / salt particle separator for the salt cavern gas storage system according to claim 5, characterized in that, A first liquid collecting plate (4-2) for collecting liquid droplets from the outer cavity (4-5-2) is provided between the outer wall of the inner cavity (4-5-1) and the inner wall of the tube body (1); a first liquid collecting port (4-2-1) is opened on the first liquid collecting plate (4-2), and the plate surface of the first liquid collecting plate (4-2) is inclined to the first liquid collecting port (4-2-1); the first baffle (4-1) also includes a second liquid collecting plate (4-1-2) located between the outer wall of the gathering cavity (4-1-1) and the inner wall of the tube body (1), the second liquid collecting plate (4-1-2) is opened to the second liquid collecting port (4-1-3), the plate surface of the second liquid collecting plate (4-1-2) is inclined to the second liquid collecting port (4-1-3), and the position of the second liquid collecting port (4-1-3) corresponds to the first liquid collecting port (4-2-1). The droplet / salt separator also includes a drain pipe (3), the two ends of which are connected to the second liquid collection port (4-1-3) and the sewage discharge port (1-3), respectively.

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