A miniaturized cryogenic regulating valve for refueling

Abstract

This utility model discloses a miniaturized cryogenic regulating valve for filling, belonging to the technical field of cryogenic regulating valves. It includes a regulating valve body, a valve stem, and a control top block. The valve stem includes an outer valve stem tube and a regulating valve stem. A fixing frame is provided between the bottom of the control top block and the outer valve stem tube. A connecting ring is provided between the top and bottom middle of the inner ring of the fixing frame and the regulating valve stem. The connecting ring includes two connecting semi-ring plates with a plurality of evenly distributed mounting holes. Two protective side plates are symmetrically arranged between the connecting rings. A telescopic column is provided between the protective side plates and the inner ring of the fixing frame. Mounting plates and mounting grooves are respectively provided on the sides of the protective side plates and the connecting semi-ring plates. This utility model, through protective side plates and heating strips, effectively protects the exposed part of the valve stem from low temperature, preventing condensation on the surface, reducing the impact on the valve stem, and ensuring stable operation of the equipment.

Description

Technical Field

[0001] This utility model relates to the field of cryogenic regulating valve technology, specifically a miniaturized cryogenic regulating valve for filling. Background Technology

[0002] A cryogenic control valve is an automated control valve specifically designed for use in pipeline systems carrying cryogenic media (typically fluids with temperatures below -20°C, such as liquid nitrogen, liquid oxygen, and liquefied natural gas). It controls the flow rate, pressure, or temperature of the medium by adjusting the valve opening. It has wide applications in cryogenic industries, energy, aerospace, and medical fields, and its design must adapt to the special requirements of cryogenic environments to ensure safe and stable operation at extreme temperatures.

[0003] However, existing miniaturized cryogenic control valves for filling applications have the following problems during use: Because part of the valve stem is external, when cryogenic substances flow through it, the low temperature is transferred to the valve stem, easily forming condensation. This condensation affects the valve stem, causing rust and other problems, thus impacting the stable operation of the valve stem and the service life of the control valve. Therefore, it is necessary to design corresponding technical solutions to address these problems. Utility Model Content

[0004] The purpose of this utility model is to provide a miniaturized cryogenic regulating valve for filling, which solves the technical problem that, because part of the valve stem is located on the outside, when cryogenic substances flow through, the low temperature will be transferred to the valve stem, which can easily form condensate on the valve stem, affecting the valve stem and causing rust. This results in the instability of the valve stem and the service life of the regulating valve, thus meeting the actual use requirements.

[0005] To achieve the above objectives, this utility model provides the following technical solution: It includes a regulating valve body, a valve stem, and a control top block. The valve stem includes a valve stem outer tube and a regulating valve stem. A fixing frame is provided between the bottom of the control top block and the valve stem outer tube. A connecting ring is provided between the top and bottom middle of the inner ring of the fixing frame and the regulating valve stem. The connecting ring includes two connecting semi-ring plates. Several mounting holes are evenly provided on the connecting semi-ring plates. Two protective side plates are symmetrically arranged between the connecting rings. A telescopic column is provided between the protective side plates and the inner ring of the fixing frame. Mounting plate one and mounting groove are respectively provided on both sides of the protective side plates and the connecting semi-ring plates. Mounting plate two is provided between the protective side plates and the connecting semi-ring plates. Several heating strips are evenly spaced on the inner wall of the protective side plates. A heating control block is provided near the top of the inner ring of the protective side plates.

[0006] In a preferred embodiment of this utility model, connecting flanges are integrally connected to both ends of the regulating valve body, the valve stem is fixed between the control top block and the regulating valve body, the control top block integrates a control module inside, and the control top block is located at the top of the regulating valve body.

[0007] In a preferred embodiment of this utility model, the bottom of the valve stem outer tube is fixedly connected to the top of the regulating valve body, the regulating valve stem is movably connected inside the valve stem outer tube, one top end of the regulating valve stem is fixedly connected to the control top block, and the bottom end is inside the regulating valve body. The fixing frame is generally in the form of a rounded rectangular frame structure.

[0008] In a preferred embodiment of this utility model, the outer surfaces of the connecting semi-ring plate and the protective side plate are flush, and the mounting hole is fixedly connected to the fixing frame by bolts. Sealing gaskets are installed between the protective side plates, between the protective side plate and the connecting semi-ring plate, and on the inner ring of the connecting semi-ring plate.

[0009] In a preferred embodiment of this utility model, a spring is installed inside the telescopic column, and the first mounting plate and the second mounting plate are respectively embedded in the mounting groove at the corresponding positions. The first mounting plate, the second mounting plate and the mounting groove are fixedly connected by bolts.

[0010] In a preferred embodiment of this utility model, the heating strip is cylindrical in shape, with part of the heating strip embedded in the inner wall of the protective side plate and part of it protruding from the protective side plate. The heating control block is sequentially connected to the heating strip at each position.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: The protective side plates and heating strips effectively protect the exposed parts of the regulating valve stem. When low-temperature substances pass through the regulating valve body, the protective side plates isolate the valve stem from the air, preventing condensation from forming on its surface during cooling and thus preventing rust. Simultaneously, as the regulating valve stem begins to cool, the heating control block activates the heating strips at various locations, heating the space within the protective side plates. This effectively slows down the cooling rate of the regulating valve stem, preventing excessive cooling and significantly improving its stability and lifespan. This solves the problems affecting the stable operation of the valve stem and the overall lifespan of the regulating valve. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall design of this utility model; Figure 2 This is a structural diagram of the protective side plate described in this utility model; Figure 3 This is a structural diagram of the heating strip described in this utility model.

[0013] In the diagram: regulating valve body-1, connecting flange-2, valve stem-3, fixing bracket-5, control top block-6, protective side plate-7, telescopic column-8, connecting semi-ring plate-9, sealing gasket-10, mounting hole-11, mounting plate one-12, mounting plate two-13, heating control block-14, heating strip-15, mounting groove-16. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-3 This utility model provides a technical solution: a miniaturized cryogenic regulating valve for filling, comprising: a regulating valve body 1, a valve stem 3, and a control top block 6. The valve stem 3 includes a valve stem outer tube and a regulating valve stem. A fixing frame 5 is provided between the bottom of the control top block 6 and the valve stem outer tube. A connecting ring is provided between the top and bottom of the inner ring of the fixing frame 5 and the regulating valve stem. The connecting ring includes two connecting semi-ring plates 9. Several mounting holes 11 are evenly provided on the connecting semi-ring plates 9. Two protective side plates 7 are symmetrically arranged between the connecting rings. The protective side plates 7 are connected to the fixing... Telescopic columns 8 are provided between the inner rings of the frame 5. Mounting plates 12 and mounting grooves 16 are respectively provided on both sides of the protective side plate 7 and the connecting semi-ring plate 9. Mounting plate 2 13 is provided between the protective side plate 7 and the connecting semi-ring plate 9. Several heating strips 15 are provided at equal intervals on the inner wall of the protective side plate 7. A heating control block 14 is provided near the top of the inner ring of the protective side plate 7. Specifically, the heating control block 14 is used to control the opening of the heating strips 15. It can be connected to the control top block 6 of the regulating valve body 1 to achieve overall coordinated control and start-up.

[0016] Further improvements include the integrated connection flanges 2 at both ends of the regulating valve body 1, the valve stem 3 being fixed between the control top block 6 and the regulating valve body 1, the control top block 6 having an integrated control module inside, and the control top block 6 being located at the top of the regulating valve body 1.

[0017] In a further improvement, the bottom of the valve stem outer tube is fixedly connected to the top of the regulating valve body 1, the regulating valve stem is movably connected inside the valve stem outer tube, one end of the regulating valve stem is fixedly connected to the control top block 6, and the bottom end is inside the regulating valve body 1. The fixing frame 5 is an overall rounded rectangular frame structure.

[0018] Further improvements include making the outer surfaces of the connecting semi-ring plate 9 and the protective side plate 7 flush, and fixing them to the fixing bracket 5 with bolts on the mounting holes 11. Sealing gaskets 10 are installed between the protective side plates 7, between the protective side plate 7 and the connecting semi-ring plate 9, and on the inner ring of the connecting semi-ring plate 9. Specifically, the sealing gaskets 10 can be made of materials such as low-temperature resistant rubber to seal the gaps between the protective side plate 7 and the connecting ring to prevent moisture in the air from entering.

[0019] Further improvements include the installation of a spring inside the telescopic column 8. Specifically, the telescopic column 8, in conjunction with the spring, can push the protective side plate 7, allowing the two protective side plates 7 to fit together and preventing loosening. After the protective side plates 7 are installed, the telescopic column 8 can be fixed to the fixing frame 5 with bolts. Mounting plate one 12 and mounting plate two 13 are respectively embedded in the corresponding mounting grooves 16, and the mounting plate one 12, mounting plate two 13 and mounting grooves 16 are fixedly connected with bolts.

[0020] Further improvements include a cylindrical structure for the heating strip 15, with some parts of the heating strip 15 embedded in the inner wall of the protective side plate 7 and some parts protruding from the protective side plate 7. The heating control block 14 is sequentially connected to the heating strip 15 at each position.

[0021] In use: First, two connecting semi-ring plates 9 are spliced ​​around the regulating valve stem and connected and fixed by mounting plate 12 and mounting groove 16. After completion, the connecting ring is fixedly connected to the bottom of the inner ring of the fixing frame 5 and the top of the valve stem 3 by mounting hole 11 and bolts. Then, the protective side plate 7 is placed between the two connecting semi-ring plates 9 and connected and fixed by mounting plate 12 and mounting groove 16 on the connecting semi-ring plate 9. After the two protective side plates 7 are installed, they are connected and fixed together by mounting plate 2 13, thus sealing the exposed part of the regulating valve stem.

[0022] The regulating valve body-1, connecting flange-2, valve stem-3, fixing bracket-5, control top block-6, protective side plate-7, telescopic column-8, connecting semi-ring plate-9, sealing gasket-10, mounting hole-11, mounting plate one-12, mounting plate two-13, heating control block-14, heating strip-15, and mounting groove-16 of this utility model are all general standard parts or parts known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods. The problem solved by this utility model is that because part of the valve stem is on the outside, when a low-temperature substance flows through it, the low temperature will be transferred to the valve stem, which can easily form condensate on the valve stem and affect it. This invention addresses the technical problem of valve stem rust and other issues affecting stable valve stem operation and the lifespan of the regulating valve. Through the combination of the aforementioned components—including the protective side plate, connecting half-plate ring, sealing gasket, and heating strip—the exposed portion of the regulating valve stem is effectively protected. When low-temperature substances pass through the regulating valve body, the protective side plate isolates the valve stem from the air, preventing condensation on its surface during cooling. As the valve stem begins to cool, the heating strips at various locations are activated to heat the space within the protective side plate, thus slowing down the cooling rate and preventing excessively rapid cooling that could negatively impact the valve stem's physical properties.

[0023] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0024] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A miniaturized cryogenic regulating valve for filling, characterized in that: The device includes a regulating valve body (1), a valve stem (3), and a control top block (6). The valve stem (3) includes a valve stem outer tube and a regulating valve stem. A fixing frame (5) is provided between the bottom of the control top block (6) and the valve stem outer tube. A connecting ring is provided between the top and bottom of the inner ring of the fixing frame (5) and the regulating valve stem. The connecting ring includes two connecting half-ring plates (9). Several mounting holes (11) are evenly provided on the connecting half-ring plates (9). Two protective side plates (7) are symmetrically arranged between the connecting rings. Telescopic columns (8) are provided between the inner ring of the protective side plate (7) and the fixed frame (5). Mounting plate one (12) and mounting groove (16) are respectively provided on both sides of the protective side plate (7) and the connecting half ring plate (9). Mounting plate two (13) is provided between the protective side plate (7) and the connecting half ring plate (9). Several heating strips (15) are provided at equal intervals on the inner wall of the protective side plate (7). A heating control block (14) is provided near the top of the inner ring of the protective side plate (7).

2. The miniaturized cryogenic regulating valve for filling according to claim 1, characterized in that: The regulating valve body (1) is integrally connected to both ends with connecting flanges (2), the valve stem (3) is fixed between the control top block (6) and the regulating valve body (1), the control top block (6) integrates a control module inside, and the control top block (6) is located at the top of the regulating valve body (1).

3. The miniaturized cryogenic regulating valve for filling according to claim 1, characterized in that: The bottom of the valve stem outer tube is fixedly connected to the top of the regulating valve body (1), the regulating valve stem is movably connected inside the valve stem outer tube, one top end of the regulating valve stem is fixedly connected to the control top block (6), and one bottom end is inside the regulating valve body (1). The fixing frame (5) is a rounded rectangular frame structure.

4. A miniaturized cryogenic regulating valve for filling according to claim 1, characterized in that: The outer surfaces of the connecting half-ring plate (9) and the protective side plate (7) are flush. The mounting hole (11) is fixedly connected to the fixing frame (5) by bolts. Sealing gaskets (10) are installed between the protective side plates (7), between the protective side plate (7) and the connecting half-ring plate (9), and on the inner ring of the connecting half-ring plate (9).

5. A miniaturized cryogenic regulating valve for filling according to claim 1, characterized in that: The telescopic column (8) is equipped with a spring inside. The first mounting plate (12) and the second mounting plate (13) are respectively embedded in the mounting groove (16) at the corresponding positions. The first mounting plate (12), the second mounting plate (13) and the mounting groove (16) are fixedly connected by bolts.

6. A miniaturized cryogenic regulating valve for filling according to claim 1, characterized in that: The heating strip (15) is cylindrical in shape. Part of the heating strip (15) is embedded in the inner wall of the protective side plate (7) and part of it protrudes from the protective side plate (7). The heating control block (14) is connected to the heating strip (15) at each position in sequence.

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