Connecting device for liquefied air energy storage filling
Through the clamping structure and valve design between the male joint cylinder and the female joint mother, the problem of liquid leakage during the liquefied air energy storage filling process is solved, and automatic sealing is achieved after filling, ensuring the integrity of rock-breaking energy.
Patent Information
- Application Number
- CN202422370531.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-27
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-09-27
AI Technical Summary
The existing liquefied air energy storage filling connection structure is prone to leakage during dismantling and reduce rock breaking energy.
The clamping structure between the male joint cylinder and the female joint mother is adopted, combined with the design of the valve and the limit ball. The valve opens when filling liquid, and automatically closes after filling liquid, and seals with annular hollow rubber and anti-expanding substances to prevent liquid leakage.
The connection sealing of the filling device is improved, liquid leakage is avoided, and the integrity of rock-breaking energy is ensured.
Smart Images
Figure CN223121176U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of liquefied air energy storage rock-breaking filling, and particularly relates to a connection device for liquefied air energy storage filling. Background Technique
[0002] Liquid Air Energy Storage (LAES) is an energy storage technology that uses liquid air at low temperatures to store and release energy. It is based on the principle of Compressed Air Energy Storage (CAES), where air is compressed to extremely low temperatures and becomes liquid. Liquid air energy storage is also applied to rock-breaking operations. In the rock-breaking operation using liquefied air, it is necessary to connect the liquid filling pipeline to the energy storage pipe to be filled for liquid filling, and after the liquid filling is completed, it is necessary to quickly remove the liquid filling pipeline for rock-breaking.
[0003] Currently, the common connection structure for liquefied air energy storage filling is: using bolts to connect the liquid filling pipeline to the energy storage pipe to be filled, and the removal method after liquid filling is to cut the liquid filling pipeline with scissors. Although the cutting removal shortens the removal time, the cut end is not completely sealed, which will cause liquid leakage and reduce the rock-breaking energy. Content of the Utility Model
[0004] The purpose of the utility model is to provide a connection device for liquefied air energy storage filling, which is used to enhance the connection sealing performance of the filling device and avoid liquid leakage.
[0005] To solve the above technical problems, the technical solution adopted by the utility model is:
[0006] A connection device for liquefied air energy storage filling includes a male joint cylinder connected to the energy storage pipe to be filled, and a female joint body connected to the liquid filling pipeline; a first annular groove is arranged on the outer side of the connection end of the male joint cylinder, and a plurality of balls are arranged on the inner side of the connection end of the female joint body, and the plurality of balls are arranged in a circumferential ring along the female joint body, and the circumferentially arranged plurality of balls are clamped in the first annular groove to make the male joint cylinder and the female joint body clamped; a valve and a limiting ball are installed on the inner wall of the male joint cylinder, one end of the valve is fixedly installed on the inner wall of the male joint cylinder, and the other end of the valve is attached to the side of the valve close to the energy storage pipe to be filled, so that the valve opens when the male joint cylinder is filled with liquid and closes after the liquid filling.
[0007] Furthermore, an annular hollow rubber is installed on the outer side of the connection end of the male joint cylinder, and an anti-expansion substance is filled in the annular hollow rubber.
[0008] Preferably, the anti-expansion substance is tungsten zirconate.
[0009] Furthermore, it also includes a first ring mounted on the female joint body, a second ring mounted on the male joint column, and a chain, the first ring and the second ring are respectively equipped with a first buckle and a second buckle; one end of the chain is connected to the first buckle, and the other end of the chain is equipped with a ram's horn self-locking hook, which is engaged in the second buckle.
[0010] Furthermore, a second annular groove is provided on the outer side of the connecting end of the male joint column, and the annular hollow rubber is clamped in the second annular groove.
[0011] Compared with the prior art, the utility model has the following advantages and beneficial effects:
[0012] The filling pipeline is connected to the energy storage tube to be filled through a male connector column and a female connector mother body. A valve structure formed by a valve and a limiting ball is installed on the inner wall of the male connector column. When filling with liquid, the valve structure composed of the valve and the limiting ball will open under the filling pressure. After the filling is completed and the pressure disappears, the valve will automatically close under its own weight to prevent the leakage of liquefied air and enhance the airtightness. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 This is a structural diagram of the utility model.
[0014] Figure 2 It is a cross-sectional view of the utility model.
[0015] Figure 3 This is the structural diagram of the male connector column.
[0016] The meanings of the numbers in the figure are: 1-male connector cylinder, 2-female connector mother body, 3-first annular groove, 4-ball, 5-valve, 6-limiting ball, 7-annular hollow rubber, 8-first circular ring, 9-second circular ring, 10-first buckle, 11-second buckle, 12-chain, 13-ram horn self-locking hook, 14-second annular groove. DETAILED DESCRIPTION
[0017] The following will clearly and completely describe the technical solutions in the embodiments of the utility model in conjunction with the accompanying drawings in the embodiments of the utility model, so as to have a further understanding of the concept of the utility model, the technical problems solved, the technical features constituting the technical solutions and the technical effects brought about.
[0018] like Figure 1 , Figure 2 , Figure 3As shown in the figure, a connection device for liquefied air energy storage filling includes a male joint cylinder 1 connected to the energy storage pipe to be filled, and a female joint body 2 connected to the liquid filling pipeline; a first annular card slot 3 is arranged on the outer side of the connection end of the male joint cylinder 1, and a plurality of balls 4 are arranged on the inner side of the connection end of the female joint body 2. The plurality of balls 4 are arranged in a circumferential ring along the female joint body 2, and the circumferentially arranged plurality of balls 4 are clamped in the first annular card slot 3 to clamp the male joint cylinder 1 and the female joint body 2; a valve flap 5 and a limit ball 6 are installed on the inner wall of the male joint cylinder 1. One end of the valve flap 5 is fixedly installed on the inner wall of the male joint cylinder 1, and the other end of the valve flap 5 is attached to the side of the valve flap 5 close to the energy storage pipe to be filled, so that the valve flap 5 opens when the male joint cylinder 1 is filled with liquid, and the valve flap 5 closes after the liquid is filled.
[0019] The application background of the present utility model is to utilize the energy storage technology of liquefied air energy storage, compress air to a very low temperature to become liquid, and then utilize the energy released by the liquefied air to act on the rock breaking operation. The current liquefied air energy storage filling process is as follows: the liquid filling pipeline is connected to the energy storage pipe to be filled by bolts, and the removal method after filling with liquid is to cut the liquid filling pipeline with scissors. Although the cutting removal shortens the removal time, the cut-off part cannot be completely sealed, which will cause liquid leakage and reduce the rock breaking energy.
[0020] The improvement of the present utility model lies in: the male joint cylinder 1 is connected to the energy storage pipe to be filled, the female joint body 2 is connected to the liquid filling pipeline, and the connection end of the male joint cylinder 1 and the connection end of the female joint body 2 are connected by a clamping method. The clamping is specifically as follows: a plurality of balls 4 on the inner side of the connection end of the female joint body 2 are clamped into the first annular card slot 3 of the male joint cylinder 1. During the liquid filling process after clamping, liquid is filled from the liquid filling pipeline into the energy storage pipe to be filled. When filling with liquid, the valve flap 5 structure composed of the valve flap 5 and the limit ball 6 will open under the liquid filling pressure, and after the liquid filling is completed and the pressure disappears, the valve flap 5 will automatically close under its own weight to prevent the liquefied air from leaking. The automatic closing of the valve flap 5 structure after liquid filling can avoid liquid leakage. When disassembling, removing the female joint body 2 will not affect the valve flap 5 structure and will not reduce the rock breaking energy.
[0021] Furthermore, an annular hollow rubber 7 is installed on the outer side of the connection end of the male joint column 1, and the annular hollow rubber 7 is filled with anti-expansion material. When liquid oxygen is filled, the temperature of the filled liquid is usually low, such as the temperature of liquid oxygen is generally minus 183°C, which is much lower than the normal temperature outside, and it is very easy to cause liquefied air to leak from the connection due to thermal expansion and contraction. The annular hollow rubber 7 filled with anti-expansion material is used as a seal. During the liquid filling operation, the temperature in the liquid filling pipeline and the energy storage tube to be filled begins to drop. The anti-expansion material in the annular hollow rubber 7 will begin to expand continuously under the action of the low temperature environment, and drive the annular rubber to expand. At the same time, the elasticity of the annular hollow rubber 7 is used to make the inner and outer sides of the annular hollow rubber 7 respectively fit the outer wall of the connection end of the energy storage tube to be filled and the inner wall of the connection end of the liquid filling pipeline, thereby effectively blocking the gap between the energy storage tube to be filled and the liquid filling pipeline, and effectively fitting the filling energy storage tube and the liquid filling pipeline to prevent the leakage of the filling liquid.
[0022] Preferably, the anti-expansion material is tungsten zirconate, which is a negative thermal expansion material with excellent performance and has negative thermal expansion performance in the temperature range of 0.3-1050.0K.
[0023] Furthermore, it also includes a first ring 8 sleeved on the female connector body 2, a second ring 9 sleeved on the male connector cylinder 1, and a chain 12, wherein the first ring 8 and the second ring 9 are respectively provided with a first buckle 10 and a second buckle 11; one end of the chain 12 is connected to the first buckle 10, and the other end of the chain 12 is provided with a horn-type self-locking hook 13, which is clamped in the second buckle 11. The first ring 8, the second ring 9, and the chain form an anti-falling structure, and when filling with liquid, one end of the chain is fixed on the first ring 8, and the other end is clamped on the second ring 9 through the horn-type self-locking hook 13, so as to prevent the quick-connect joint from falling off during the filling process and causing injuries.
[0024] Furthermore, a second annular groove 14 is provided on the outer side of the connecting end of the male joint column 1, and the annular hollow rubber 7 is clamped in the second annular groove 14. The second annular groove 14 is provided to prevent the annular hollow rubber 7 from lateral displacement.
[0025] The words “connection” and “fixation” appearing in the description of the present invention may refer to fixed connection, processing and forming, welding, or mechanical connection. The specific meanings of the above terms in the present invention shall be understood according to the specific circumstances.
[0026] In the description of the present utility model, terms such as "center", "upper", "lower", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying a specific orientation that the device or element referred to must have. Therefore, it should not be construed as a limitation to the present utility model.
[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present utility model.
Claims
1. A connection device for liquefied air energy storage filling, characterized in that: It includes a male joint cylinder (1) connected to the energy storage tube to be filled, and a female joint body (2) connected to the liquid filling pipeline; A first annular groove (3) is provided on the outer side of the connection end of the male joint cylinder (1), and a plurality of balls (4) are provided on the inner side of the connection end of the female joint body (2). The plurality of balls (4) are arranged in a circumferential ring along the female joint body (2), and the circumferentially arranged plurality of balls (4) are clamped in the first annular groove (3) to clamp the male joint cylinder (1) and the female joint body (2); A valve flap (5) and a limiting ball (6) are installed on the inner wall of the male joint cylinder (1). One end of the valve flap (5) is fixedly installed on the inner wall of the male joint cylinder (1), and the other end of the valve flap (5) fits on the side of the valve flap (5) close to the energy storage tube to be filled, so that the valve flap (5) opens during liquid filling and closes after liquid filling in the male joint cylinder (1).
2. The connecting device for filling a liquefied air energy storage according to claim 1, wherein: An annular hollow rubber (7) is installed on the outer side of the connection end of the male joint cylinder (1), and an anti-expansion substance is filled in the annular hollow rubber (7).
3. The connection device for liquefied air energy storage filling according to claim 2, characterized in that: The anti-expansion substance is tungsten zirconate.
4. The connecting device for filling a liquefied air energy storage according to claim 1, characterized in that: It also includes a first ring (8) sleeved on the female joint body (2), a second ring (9) sleeved on the male joint cylinder (1), and a chain (12). A first buckle (10) and a second buckle (11) are respectively installed on the first ring (8) and the second ring (9); One end of the chain (12) is connected to the first buckle (10), and a horn-type self-locking hook (13) is installed at the other end of the chain (12), and the horn-type self-locking hook (13) is clamped in the second buckle (11).
5. The connecting device for liquid air energy storage filling according to claim 2, characterized in that: A second annular groove (14) is provided on the outer side of the connection end of the male joint cylinder (1), and the annular hollow rubber (7) is clamped in the second annular groove (14).