A salt cavern gas storage facility caverning device cyclone guide

Abstract

The application provides a salt cavern gas storage cavity forming device swirl guide, the salt cavern gas storage cavity forming device swirl guide comprising an inner tube, the inner tube being vertically arranged in a vertical shaft, the swirl guide comprising a connecting part and a guide part fixedly connected together, the connecting part having a cavity, the cavity forming a water inlet at one end of the connecting part opposite to the guide part, the connecting part being detachably connected to a bottom end of the inner tube, and the water inlet corresponding to a discharge port, so that water in the inner tube can enter the cavity through the water inlet; the guide part being provided with a water discharge hole connected to the cavity, so that water in the cavity can be discharged through the water discharge hole, an axis of the water discharge hole and an axis of the inner tube forming an angle alpha, and 30 DEG ≤ alpha ≤ 75 DEG. The stress and dynamic characteristics of the inner tube during cavity forming can be improved, self-excited vibration and dynamic instability can be reduced, and the occurrence of phenomena such as bending and breaking of the inner tube can be avoided.

Description

Technical Field

[0001] This invention relates to the field of natural gas storage technology, and in particular to a swirl guide for a cavity-forming device in a salt cavern gas storage facility. Background Technology

[0002] Salt cavern gas storage is one of the main types of gas storage facilities both domestically and internationally. It is generally formed in underground gas storage caverns in salt rock strata by artificially injecting water to dissolve salt. Water dissolution cavity construction is the main method of salt cavern gas storage construction both domestically and internationally. Single-well single-cavity double-pipe hydraulic circulation cavity construction is the most common cavity construction method both domestically and internationally.

[0003] During the dual-tube circulating water-soluble cavity creation process, the lower part of the inner tube often experiences bending and breakage due to self-excited vibration and dynamic instability caused by the confined space. Summary of the Invention

[0004] The purpose of this invention is to provide a vortex guide for a cavity-forming device in a salt cavern gas storage facility, which can improve the stress and dynamic characteristics of the inner tube during the cavity-forming process, reduce self-excited vibration and dynamic instability, and thus avoid phenomena such as bending and breakage of the inner tube.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A vortex guide for a cavity-forming device for a salt cavern gas storage facility, the cavity-forming device for the salt cavern gas storage facility includes an inner tube, the inner tube can be vertically installed in a vertical well, the top end of the inner tube is connected to an external water source, and the bottom end has a discharge hole whose axis coincides with the inner tube, so that the external water source can transport water into the inner tube and discharge it out of the inner tube through the discharge hole; The vortex guide includes a connecting part and a guiding part fixedly connected together. The connecting part has a cavity. The cavity forms an inlet at one end of the connecting part opposite to the guiding part. The connecting part is detachably connected to the bottom end of the inner tube, and the inlet corresponds to the outlet so that water in the inner tube can enter the cavity through the inlet. The guide portion is provided with a drain hole connected to the cavity so that water in the cavity can be discharged through the drain hole. The axis of the drain outlet forms an angle α with the axis of the inner tube, and 30°≤α≤75°.

[0006] Preferably, on the projection perpendicular to the axis of the inner tube, the outer contour of the guide is circular, and the axis of the drain hole intersects the circumference formed by the guide at point A. The tangent line passing through point A and the circumference formed by the guide forms an angle β with the axis of the drain hole, and 15°≤β≤75°.

[0007] Preferably, the outline of the guide portion has a shape that tapers away from the connecting portion.

[0008] Preferably, the outer contour shape of the guide portion is hemispherical.

[0009] Preferably, the outer contour of the connecting part is cylindrical, the axis of the connecting part coincides with the axis of the guide part, and the diameters of the two are equal.

[0010] Preferably, the cavity is cylindrical in shape, and its axis coincides with the axis of the inner tube.

[0011] Preferably, an external thread is provided on the outer wall of the bottom end of the inner tube, and an internal thread matching the external thread is provided on the inner wall of the cavity, so that the connecting part can be threadedly connected to the bottom end of the inner tube.

[0012] Preferably, the connecting part and the guiding part are integrally formed.

[0013] Preferably, both the connecting part and the guide part are made of nylon.

[0014] Preferably, the number of drainage holes is at least two, and the at least two drainage holes are arranged in a circular array with the axis of the inner tube as the center.

[0015] The swirling guide of the salt cavern gas storage cavity-forming device of the present invention, by adopting a technical solution in which the axis of the drain outlet forms an angle α with the axis of the inner tube, and 30°≤α≤75°, can improve the stress and dynamic characteristics of the inner tube during the cavity-forming process, reduce self-excited vibration and dynamic instability, and thus avoid the occurrence of phenomena such as bending and breakage of the inner tube. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the installation state of the vortex guide of an embodiment of the salt cavern gas storage cavity-making device of the present invention; Figure 2 for Figure 1 A schematic diagram of the projection of the guide section in the direction perpendicular to the circumference of the inner tube.

[0017] In the diagram: 1-Inner tube; 2-Connecting part; 3-Guide part; 4-Cavity; 5-Drain hole. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the present invention clearer, the swirling guide of the salt cavern gas storage cavity-forming device of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present invention and are not intended to limit the present invention.

[0019] like Figure 1As shown, a vortex guide for a cavity-forming device in a salt cavern gas storage facility includes an inner pipe 1, which can be vertically installed in a shaft. The top end of the inner pipe 1 is connected to an external water source, and the bottom end has a discharge hole whose axis coincides with that of the inner pipe 1, allowing the external water source to deliver water into the inner pipe 1 and discharge it out of the inner pipe 1 through the discharge hole. The vortex guide includes a connecting part 2 and a guiding part 3 fixedly connected together. The connecting part 2 has a cavity 4, with an inlet formed at the end of the cavity 4 opposite to the guiding part 3. The connecting part 2 is detachably connected to the bottom end of the inner pipe 1, and the inlet corresponds to the discharge port, allowing water in the inner pipe 1 to enter the cavity 4 through the inlet. The guiding part 3 is provided with a drain hole 5 connected to the cavity 4, allowing water in the cavity 4 to be discharged through the drain hole 5. The axis of the drain hole forms an angle α with the axis of the inner pipe 1, and 30°≤α≤75°.

[0020] Furthermore, such as Figure 2 As shown, on the projection perpendicular to the axis of the inner tube 1, the outer contour of the guide part 3 is circular, and the axis of the drain hole 5 intersects the circumference formed by the guide part 3 at point A. The tangent line passing through point A and the circumference formed by the guide part 3 forms an angle β with the axis of the drain hole, and 15°≤β≤75°.

[0021] Using the above technical solution, when water is discharged through the drain hole 5 to the outside of the vortex guide, it can form a vortex around the vortex guide, effectively improving the stress and dynamic characteristics of the inner tube 1 in the salt cavern gas storage cavity-forming device, reducing the bending or damage of the inner tube 1 caused by self-excited vibration and dynamic instability, and at the same time, the counterclockwise vortex can avoid the risk of the inner tube 1 being turned upside down. It should be noted that in actual manufacturing, if... Figure 1 , 2 As shown, there are at least two drainage holes 5, which are arranged in a circular array around the axis of the inner tube 1. When a cyclone screen tube (not shown) is provided at the bottom of the inner tube 1, the connecting part 2 can be detachably connected to the bottom end of the cyclone screen tube.

[0022] Specifically, such as Figure 1 As shown, the cavity 4 is cylindrical in shape, and its axis coincides with the axis of the inner tube 1. An external thread is provided on the outer wall of the bottom end of the inner tube 1, and an internal thread matching the external thread is provided on the inner wall of the cavity 4, so that the connecting part 2 can be threadedly connected to the bottom end of the inner tube 1. This facilitates the disassembly or installation of the vortex guide and the inner tube 1. The connection method between the connecting part 2 and the inner tube 1 is not limited to this; any other feasible detachable connection method can be used.

[0023] More preferably, such as Figure 1As shown, the outer contour of the guide portion 3 is tapered towards the distance from the connecting portion 2. This allows the vortex guide to smoothly extend into the vertical shaft under the drive of the inner tube 1, reducing the risk of obstruction. In actual manufacturing, the outer contour of the guide portion 3 can be hemispherical as shown in the figure. Furthermore, the outer contour of the connecting portion 2 is cylindrical, with the axis of the connecting portion 2 coinciding with the axis of the guide portion 3, and their diameters being equal.

[0024] In actual manufacturing, both the connecting part 2 and the guide part 3 are made of nylon. This not only reduces manufacturing costs but also extends the service life of the vortex guide and prevents salt crystallization from forming on it. Specifically, the connecting part 2 and the guide part 3 can be manufactured as a single piece.

[0025] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A vortex guide for a cavity-forming device of a salt cavern gas storage tank, the cavity-forming device comprising an inner pipe (1), the inner pipe (1) being vertically installed in a vertical shaft, the top end of the inner pipe (1) being connected to an external water source, and the bottom end having a discharge hole whose axis coincides with that of the inner pipe (1), so that the external water source can deliver water into the inner pipe (1) and discharge it out of the inner pipe (1) through the discharge hole, characterized in that: The vortex guide includes a connecting part (2) and a guiding part (3) fixedly connected together. The connecting part (2) has a cavity (4). The cavity (4) forms an inlet at one end of the connecting part (2) opposite to the guiding part (3). The connecting part (2) is detachably connected to the bottom end of the inner tube (1). The inlet corresponds to the discharge hole so that water in the inner tube (1) can enter the cavity (4) through the inlet. The guide part (3) is provided with a drain hole (5) connected to the cavity (4) so ​​that water in the cavity (4) can be discharged through the drain hole (5). The axis of the drain hole forms an angle α with the axis of the inner tube (1), and 30°≤α≤75°. In the projection perpendicular to the axis of the inner tube (1), the outer contour of the guide part (3) is circular, and the axis of the drain hole (5) intersects the circumference formed by the guide part (3) at point A. The tangent line passing through point A and the circumference formed by the guide part (3) forms an angle β with the axis of the drain hole. The number of drain holes (5) is at least two, and the at least two drain holes (5) are arranged in a circular array with the axis of the inner tube (1) as the center.

2. The swirling guide of the salt cavern gas storage cavity-making device according to claim 1, characterized in that, 15°≤β≤75°。 3. The swirl guide of the salt cavern gas storage cavity-making device according to claim 1, characterized in that: The outer contour of the guide portion (3) is tapering away from the connecting portion (2).

4. The swirl guide of the salt cavern gas storage cavity-making device according to claim 3, characterized in that: The outer contour of the guide part (3) is hemispherical.

5. The swirl guide of the salt cavern gas storage cavity-making device according to claim 4, characterized in that: The outer shape of the connecting part (2) is cylindrical, the axis of the connecting part (2) coincides with the axis of the guide part (3), and the diameters of the two are equal.

6. The swirl guide of the cavity-forming device for a salt cavern gas storage tank according to any one of claims 1 to 5, characterized in that: The cavity (4) is cylindrical in shape, and its axis coincides with the axis of the inner tube (1).

7. The swirl guide of the salt cavern gas storage cavity-making device according to claim 6, characterized in that: An external thread is provided on the outer wall of the bottom end of the inner tube (1), and an internal thread matching the external thread is provided on the inner wall of the cavity (4), so that the connecting part (2) can be threadedly connected to the bottom end of the inner tube (1).

8. The swirl guide of the cavity-forming device for a salt cavern gas storage facility according to any one of claims 1 to 5, characterized in that: The connecting part (2) and the guiding part (3) are integrally formed.

9. The swirl guide of the cavity-forming device for a salt cavern gas storage tank according to any one of claims 1 to 5, characterized in that: Both the connecting part (2) and the guiding part (3) are made of nylon.

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