Anti-icing device and air separation system

Abstract

The application discloses an anti-icing device and an air separation system, which comprises a distributor, a distribution pipe and a heating pipe. The distributor is used for supplying heated gas to pass in; one end of the distribution pipe is connected with the distributor, the other end of the distribution pipe is connected with the heating pipe, the heating pipe is provided with a plurality of gas outlet holes which are used for spraying the heated gas, at least part of the heating pipe is arc-shaped, and the heating pipe is used for surrounding the outer circumferential side of a component to be heated so that the heated gas sprayed from the gas outlet holes can be sprayed to and heat the component to be heated. The technical problem that the control valve of the air separation device is prone to icing in the prior art is solved, and the stable and continuous operation of the air separation device is ensured.

Description

Technical Field

[0001] This application belongs to the field of air separation unit technology, specifically relating to an anti-icing device and an air separation system for an air separation unit. Background Technology

[0002] In existing technologies, due to factors such as aging, frequent operation, and seal aging, leakage problems easily occur at the valves and valve stems of the control valves in air separation units. This is especially true in coastal areas during winter, where the ambient temperature is low. The temperature of the medium flowing inside the control valve is close to the ambient temperature, preventing the leaked medium from evaporating in a gaseous state. This liquid medium freezes and gradually accumulates at the valves and valve stems, causing the control valves to freeze and become stuck, thus affecting the normal operation of the air separation unit. Utility Model Content

[0003] To solve the above-mentioned technical problems, this application provides an anti-icing device that can spray hot air onto the control valve and other heating components, thereby heating the control valve of the air separation unit and preventing icing at the control valve, thus ensuring the stable and continuous operation of the air separation unit.

[0004] This application also proposes an air separation system that includes the above-mentioned anti-icing device.

[0005] The technical solution adopted to achieve the purpose of this application is as follows:

[0006] The anti-icing device of this application includes a distributor, a distribution pipe, and a heating pipe. The distributor is used to supply heating gas; one end of the distribution pipe is connected to the distributor, and the other end of the distribution pipe is connected to the heating pipe. The heating pipe has multiple air outlets for the heating gas to be ejected. At least a portion of the heating pipe is arc-shaped, and the heating pipe is used to surround the outer periphery of the component to be heated so that the heating gas ejected from the air outlets can be directed towards and heat the component to be heated.

[0007] In some technical solutions, the heating tube is annular, and a plurality of air outlets are provided on the inner circumference of the heating tube and arranged at intervals along the extension direction of the heating tube, and the heating tube is used to be sleeved on the outer circumference of the component to be heated.

[0008] In some technical solutions, at least two distribution pipes are provided between the heating tube and the distributor, and each distribution pipe is connected between the distributor and the heating tube.

[0009] In some technical solutions, the distribution pipe and the heating pipe form a pipe group, and there are multiple pipe groups. Each of the multiple pipe groups is connected to the distributor and arranged at intervals along the circumference of the distributor, and each of the multiple pipe groups is used to heat different components to be heated.

[0010] In some technical solutions, the distributor includes an air inlet pipe, the air inlet pipe is provided with a first valve, the first valve is used to control the flow of the heating gas into the distributor;

[0011] And / or, the distribution pipe is provided with a second valve, the second valve being used to control the opening and closing of the distribution pipe to regulate the heating gas supplied by the distributor to the heating pipe.

[0012] In some technical solutions, the distribution pipe is provided with a first connector, the heating pipe is provided with a second connector, and the distribution pipe is connected to the heating pipe through the assembly of the first connector and the second connector;

[0013] And / or, at least part of the distribution tube is flexibly deformable.

[0014] In some technical solutions, a heater is included, which is disposed inside the distributor or on the front side of the distributor, and the heater is used to heat the heating gas to increase the temperature of the heating gas discharged from the distributor.

[0015] In some technical solutions, the distributor has a first cavity and a second cavity, the first cavity is connected between the inlet of the distributor and the second cavity, the heater is disposed in the first cavity, and the distribution pipe is connected to the second cavity;

[0016] And / or, the heater is an electric heater or a steam heater;

[0017] And / or, the distributor is provided with a temperature sensor for monitoring the temperature of the heating gas.

[0018] In some technical solutions, the heater is a steam heater, which includes a steam pipeline located within the distributor, wherein the flow direction of the gas in the steam pipeline is opposite to the flow direction of the heating gas in the distributor.

[0019] The steam pipeline includes an inlet pipe section and an outlet pipe section, both of which extend from the shell wall of the distributor. The inlet pipe section is equipped with a third valve, and the outlet pipe section is equipped with a fourth valve.

[0020] The air separation system of this application includes an anti-icing device and an air separation device as described in any of the above technical solutions. The air separation device includes a control valve, which constitutes the component to be heated, and the heating tube surrounds the outer periphery of the control valve.

[0021] As can be seen from the above technical solution, the anti-icing device and air separation system of this application can spray hot air to the control valve and other heating components, thereby heating the control valve of the air separation unit and preventing the control valve from freezing easily, thus ensuring the stable and continuous operation of the air separation unit. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the anti-icing device in the embodiments of this application.

[0023] Figure 2 This is a schematic diagram of multiple pipe groups of the anti-icing device in the embodiments of this application.

[0024] Figure 3 This is a schematic diagram showing the connection between the heating tube and the distribution tube in an embodiment of this application via a first connector and a second connector.

[0025] Figure 4 This is a schematic diagram of the installation arrangement of the heater in an embodiment of this application.

[0026] Figure 5 This is a schematic diagram of the installation layout of the steam pipeline in the embodiments of this application.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1-Distributor; 11-Inlet pipe; 111-First valve; 12-First chamber; 13-Second chamber; 2-Distribution pipe; 21-Second valve; 22-First connector; 23-Hose section; 3-Heating pipe; 31-Outlet; 32-Second connector; 4-Pipe assembly; 5-Heater; 51-Steam pipeline; 511-Inlet pipe section; 5111-Third valve; 512-Outlet pipe section; 5121-Fourth valve. Detailed Implementation

[0029] To enable those skilled in the art to better understand this application, the technical solution of this application will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] In the embodiments of this application, such as Figure 1 As shown, the anti-icing device includes a distributor 1, a distribution pipe 2, and a heating pipe 3.

[0031] Distributor 1 is used to supply heating gas. For example, such as... Figure 1As shown, the distributor 1 can be generally cylindrical and can extend in the vertical direction. The bottom of the distributor 1 can be provided with an inlet, and the top of the distributor 1 can be provided with one or more outlets. When in use, the inlet of the distributor 1 can be connected to a gas source, and a heating gas such as nitrogen can be introduced into the distributor 1 through the gas source. Then the heating gas can flow out from the outlet of the distributor.

[0032] It should be noted that the directions in the accompanying drawings of this application can be the corresponding positions of the anti-icing device in actual installation. The up and down direction can be the vertical direction of the distributor 1 of the anti-icing device, with the left side from bottom to top as left, the right side from bottom to top as right, the front side from bottom to top as front, and the rear side from bottom to top as rear.

[0033] One end of the distribution pipe 2 is connected to the distributor 1, and the other end of the distribution pipe 2 is connected to the heating pipe 3. For example, Figure 1 As shown, the distribution pipe 2 can be a straight pipe and can be arranged to extend in the left and right direction. The heating pipe 3 can be located on the left side of the distributor 1. The left end of the distribution pipe 2 can be connected to the heating pipe 3, and the right end of the distribution pipe 2 can be sealed to the corresponding outlet of the distributor 1.

[0034] The heating tube 3 is provided with multiple air outlets 31 for heating gas to be ejected. At least part of the heating tube 3 is arc-shaped and is used to surround the outer periphery of the component to be heated so that the heating gas ejected from the air outlets 31 can be sprayed toward and heat the component to be heated.

[0035] For example, such as Figure 1 As shown, the heating tube 3 can be arc-shaped. During assembly, the heating tube 3 can be wrapped around the outer periphery of the component waiting to be heated by the injection control valve. The heating tube 3 can be provided with multiple air outlets 31 on the inner peripheral wall facing the component to be heated. The multiple air outlets 31 can be arranged at intervals along the inner peripheral wall of the heating tube 3.

[0036] In use, the heating gas from the gas source can be introduced into the distributor 1 through the inlet of the distributor 1, and then the heating gas can flow along the distribution pipe 2 into the heating pipe 3. Finally, the heating gas can be sprayed out from each of the air outlets 31 of the heating pipe 3. The sprayed heating gas will be blown directly onto the component to be heated, thereby achieving the heating of the component to be heated. This avoids the situation where water leaked from the component to be heated or water vapor in the air is prone to freezing when the external ambient temperature is low, thus avoiding the impact of freezing on the heating component.

[0037] In some embodiments, the heating tube 3 is annular, and a plurality of air outlets 31 are provided on the inner circumferential side of the heating tube 3 and arranged at intervals along the extension direction of the heating tube 3, and the heating tube 3 is used to be sleeved on the outer circumferential side of the component to be heated.

[0038] For example, such as Figure 1 As shown, the heating tube 3 can be circular in shape, and the inner diameter of the heating tube 3 can be designed according to the outer diameter of the component to be heated. Multiple air outlets 31 can be provided on the inner circumferential wall of the heating tube 3 and can be arranged at equal intervals along the circumferential direction of the heating tube 3, which can ensure the consistency and uniformity of heating in all directions.

[0039] In other embodiments, the heating tube 3 can also be triangular, square, pentagonal, hexagonal, or other shapes. That is, the heating tube 3 only needs to be annular and able to meet the arrangement requirements of surrounding the outer periphery of the arrangement to be heated.

[0040] In some embodiments, at least two distribution pipes 2 are provided between the heating tube 3 and the distributor 1, each distribution pipe 2 being connected between the distributor 1 and the heating tube 3. For example, as... Figure 1 As shown, two distribution pipes 2 can be arranged between the heating pipe 3 and the distributor 1. Both distribution pipes 2 can extend in the left-right direction and can be arranged at intervals in the up-down direction. The left end of each distribution pipe 2 can be connected to the heating pipe 3, and the right end of each distribution pipe 2 can be sealed to the corresponding outlet of the distributor 1.

[0041] In use, the heating gas discharged from the distributor 1 can be simultaneously delivered to the heating tube 3 through multiple distribution pipes 2, thereby fully meeting the large gas supply requirements of the heating tube 3 and improving the heating efficiency and effect of the components to be heated.

[0042] In some other embodiments, three, four, five or more distribution pipes 2 may be provided between the heating pipe 3 and the distributor 1, that is, the number of distribution pipes 2 can be selectively arranged according to actual needs.

[0043] Optionally, such as Figure 1 As shown, the heating tube 3 can be a non-closed-loop structure, that is, the heating tube 3 can have two free ends. In this case, the same heating tube 3 can be provided with two distribution tubes 2, and the two distribution tubes 2 can be sealed and connected to the two free ends of the heating tube 3 respectively.

[0044] In some embodiments, the distribution pipe 2 and the heating pipe 3 form a pipe group 4. There are multiple pipe groups 4, each of which is connected to the distributor 1 and arranged at intervals along the circumference of the distributor 1. The multiple pipe groups 4 are used to heat different components to be heated.

[0045] For example, such as Figure 2As shown, the anti-icing device may include two pipe groups 4, which can be respectively located on the left and right sides of the distributor 1, and the two pipe groups 4 can be arranged approximately symmetrically in the left-right direction. In use, the heating pipe 3 of each pipe group 4 can be respectively wrapped around the outer periphery of the corresponding component to be heated, and the heating gas in the distributor 1 can be blown to the corresponding component to be heated through the corresponding pipe group 4, thereby meeting the need for simultaneous heating of multiple components to be heated.

[0046] In other embodiments, the tube group 4 may also be provided in three, four, five, or other quantities, thereby fully meeting the heating needs of a large number of components to be heated.

[0047] Optionally, each tube group 4 may also have two or three equal number of distribution tubes 2 between the heating tube 3 and the distributor 1.

[0048] In some embodiments, the distributor 1 includes an inlet pipe 11, which is provided with a first valve 111 for controlling the flow of heated gas into the distributor 1. For example, as Figure 2 As shown, the intake pipe 11 can be a straight pipe and can extend in the vertical direction. The intake pipe 11 is located at the bottom of the distributor 1, and the top end of the intake pipe 11 can be connected to the inlet on the shell wall of the distributor 1. The intake pipe 11 can be provided with only one first valve 111, which can be a shut-off valve.

[0049] In use, the heating gas to the distributor 1 can be introduced and cut off by opening and closing the first valve 111, and the amount of heating gas introduced can be adjusted by adjusting the opening degree of the first valve 111, which improves the flexibility of use and meets the needs of different operating conditions.

[0050] In some embodiments, the distribution pipe 2 is provided with a second valve 21, which is used to control the opening and closing of the distribution pipe 2 to regulate the heating gas supplied by the distributor 1 to the heating pipe 3. For example, as Figure 2 As shown, the second valve 21 can be a shut-off valve, and one second valve 21 can be installed on each distribution pipe 2.

[0051] In use, the flow rate of heating gas from distributor 1 to heating tube 3 can be adjusted by opening and closing the second valve 21, and the amount of heating gas entering the heating tube 3 can be controlled by adjusting the opening degree of the second valve 21, thus further meeting the needs of different operating conditions.

[0052] In some embodiments, the distribution pipe 2 is provided with a first connector 22, and the heating pipe 3 is provided with a second connector 32. The distribution pipe 2 is connected to the heating pipe 3 through the assembly of the first connector 22 and the second connector 32. For example, Figure 3 As shown, the first connector 22 can be a male connector, and the second connector 32 can be a female connector, which can be a groove-shaped structure. During assembly, the first connector 22 and the second connector 32 can be threaded or plugged in. The assembly of the first connector 22 and the second connector 32 achieves a fixed connection between the distribution pipe 2 and the heating pipe 3, thereby improving the convenience of installation and disassembly.

[0053] In some embodiments, at least a portion of the dispensing tube 2 can be flexibly deformable. For example, as... Figure 3 As shown, each distribution pipe 2 may include a flexible, deformable hose segment 23, which may be made of high-temperature resistant rubber or similar material. This allows the shape of the distribution pipe 2 to be adjusted according to actual needs, thereby improving installation convenience and adaptability to the location of the heating components.

[0054] In some other embodiments, the distribution pipe 2 may also be made entirely of metal, for example, the distribution pipe 2 may be a steel pipe, etc.

[0055] In some embodiments, the anti-icing device includes a heater 5, which is disposed inside the distributor 1 or on the front side of the distributor 1, and the heater 5 is used to heat the heating gas to increase the temperature of the heating gas discharged from the distributor 1.

[0056] For example, such as Figure 4 As shown, heater 5 can be installed inside distributor 1, specifically between the inlet and outlet of distributor 1. In use, the heating gas flowing in from the inlet of distributor 1 can first be heated by heater 5, and then the heated gas will flow from the outlet into the corresponding distribution pipe 2. This ensures that the heating gas delivered to the component to be heated has a high temperature, further guaranteeing the heating effect.

[0057] In some embodiments, the distributor 1 has a first cavity 12 and a second cavity 13. The first cavity 12 is connected between the inlet of the distributor 1 and the second cavity 13. The heater 5 is disposed in the first cavity 12, and the distribution pipe 2 is connected to the second cavity 13.

[0058] For example, such as Figure 4 As shown, the distributor 1 can be a hollow cylindrical structure. The distributor 1 extends vertically. Depending on the application, the inner cavity of the distributor 1 can be divided into two parts: a first cavity 12 and a second cavity 13. The first cavity 12 can be located at the bottom of the second cavity 13. The air inlet pipe 11 can be directly connected to the first cavity 12, and the heater 5 can be installed inside the first cavity 12. Each of the aforementioned distribution pipes 2 can be connected to the second cavity 13.

[0059] Therefore, the heating gas discharged through the intake pipe 11 can be heated by the heater 5 in the first chamber 12 firstly, and the heated gas can flow into the second chamber 13, and then flow into the corresponding distribution pipe 2 through the outlet on the cavity wall of the second chamber 13.

[0060] In some embodiments, heater 5 is an electric heater or a steam heater. For example, heater 5 is an electric heater, which can use a silicon controlled rectifier (SCR) to control the heating power, thereby meeting the heating needs of different power levels and thus meeting the needs of conveying heating gases at different temperatures.

[0061] In some embodiments, the distributor 1 is equipped with a temperature sensor for monitoring the temperature of the heating gas. For example, the temperature sensor can be located in the second chamber 13. In use, the temperature sensor can monitor the temperature of the heating gas in the second chamber 13 in real time. The temperature information collected by the temperature sensor can be transmitted to the corresponding controller, which can then adjust the heating power of the heater 5 to ensure that the temperature of the output heating gas meets the requirements of use.

[0062] In some embodiments, the heater 5 is a steam heater, which includes a steam pipe 51 disposed in the distributor 1, and the flow direction of the gas in the steam pipe 51 is opposite to the flow direction of the heating gas in the distributor 1.

[0063] For example, such as Figure 5 As shown, the steam pipe 51 can be installed in the first cavity 12, and the steam pipe 51 can be arranged in a zigzag pattern along the vertical direction. In use, high-temperature steam can pass through the steam pipe 51, and the high-temperature steam can exchange heat with the heating gas flowing into the first cavity 12, thereby heating the heating gas.

[0064] It should be noted that in actual use, the steam in the steam pipe 51 can flow from top to bottom, while the heating gas in the distributor 1 can flow from bottom to top. This design with opposite flow directions can improve the heating efficiency of the heating gas and fully guarantee the heating effect of the heating gas.

[0065] Steam heaters can be used in some working conditions where electric heating is not allowed, such as in liquid oxygen environments, thus replacing the aforementioned electric heaters in these environments.

[0066] In some embodiments, the steam pipeline 51 includes an inlet pipe section 511 and an outlet pipe section 512, both of which extend from the housing wall of the distributor 1. The inlet pipe section 511 is provided with a third valve 5111, and the outlet pipe section 512 is provided with a fourth valve 5121.

[0067] For example, such as Figure 5 As shown, the intake pipe section 511 can be located in the middle of the distributor 1, and the intake pipe section 511 can penetrate the shell wall of the distributor 1 in a left-right direction. The exhaust pipe section 512 can be located at the bottom of the distributor 1, and the exhaust pipe section 512 can also penetrate the shell wall of the distributor 1 in a left-right direction. In use, steam can be introduced into the steam pipe section inside the distributor 1 through the intake pipe section 511, and the steam after heat exchange can be discharged through the exhaust pipe section 512.

[0068] Both the third valve 5111 and the fourth valve 5121 can be shut-off valves, and can be manually or automatically controlled. In use, the amount of steam entering the steam pipeline 51 can be regulated by opening and closing the third valve 5111 and the fourth valve 5121, thereby also regulating the heating temperature of the heating gas.

[0069] The air separation system according to an embodiment of this application is described below.

[0070] The air separation system of this application includes an anti-icing device and an air separation unit. The anti-icing device can be the anti-icing device described in any of the above embodiments, and the air separation unit is an air component separation device. The air separation unit includes a control valve, which constitutes a component to be heated, and a heating tube 3 surrounds the outer periphery of the control valve.

[0071] Through the above embodiments, this application has the following beneficial effects or advantages:

[0072] 1) The anti-icing device of this application can transmit an external nitrogen gas source to the heating tube through a distributor. The heating gas can be blown to the valve stem seal of the control valve of the air separation unit through the gas outlet on the heating tube. This can prevent water vapor in the air from condensing on the valve stem due to cold leakage, thereby avoiding the problem of valve stem seizing due to continuous icing and valve failure.

[0073] 2) The anti-icing device of this application is equipped with a heater, which can increase the temperature of the heating gas used for purging heating, thereby better preventing the occurrence of icing on the valve stem, and fully meeting the needs of adjustment under different operating conditions, thus improving the flexibility of use.

[0074] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0075] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. An anti-icing device, characterized in that, include: A distributor for supplying heating gas; The device includes a distribution tube and a heating tube. One end of the distribution tube is connected to the distributor, and the other end of the distribution tube is connected to the heating tube. The heating tube has multiple air outlets for the heating gas to be ejected. At least a portion of the heating tube is arc-shaped and is used to surround the outer periphery of the component to be heated so that the heating gas ejected from the air outlets can be directed at and heat the component to be heated.

2. The anti-icing device according to claim 1, characterized in that, The heating tube is annular, and a plurality of air outlets are provided on the inner circumference of the heating tube and arranged at intervals along the extension direction of the heating tube. The heating tube is used to be sleeved on the outer circumference of the component to be heated.

3. The anti-icing device according to claim 1, characterized in that, At least two distribution pipes are provided between the heating pipe and the distributor, and each distribution pipe is connected between the distributor and the heating pipe.

4. The anti-icing device according to claim 1, characterized in that, The distribution pipe and the heating pipe form a pipe group, and there are multiple pipe groups. Each of the multiple pipe groups is connected to the distributor and arranged at intervals along the circumference of the distributor. Each of the multiple pipe groups is used to heat different components to be heated.

5. The anti-icing device according to claim 1, characterized in that, The distributor includes an air inlet pipe, and the air inlet pipe is provided with a first valve, which is used to control the flow of the heating gas into the distributor. And / or, the distribution pipe is provided with a second valve, the second valve being used to control the opening and closing of the distribution pipe to regulate the heating gas supplied by the distributor to the heating pipe.

6. The anti-icing device according to claim 1, characterized in that, The distribution pipe is provided with a first connector, and the heating pipe is provided with a second connector. The distribution pipe is connected to the heating pipe through the assembly of the first connector and the second connector. And / or, at least part of the distribution tube is flexibly deformable.

7. The anti-icing device according to any one of claims 1-6, characterized in that, Includes a heater, which is disposed inside the distributor or on the front side of the distributor, and the heater is used to heat the heating gas to increase the temperature of the heating gas discharged from the distributor.

8. The anti-icing device according to claim 7, characterized in that, The distributor has a first chamber and a second chamber. The first chamber is connected between the inlet of the distributor and the second chamber. The heater is located in the first chamber. The distribution pipe is connected to the second chamber. And / or, the heater is an electric heater or a steam heater; And / or, the distributor is provided with a temperature sensor for monitoring the temperature of the heating gas.

9. The anti-icing device according to claim 7, characterized in that, The heater is a steam heater, which includes a steam pipeline located inside the distributor. The flow direction of the gas in the steam pipeline is opposite to the flow direction of the heating gas in the distributor. The steam pipeline includes an inlet pipe section and an outlet pipe section, both of which extend from the shell wall of the distributor. The inlet pipe section is equipped with a third valve, and the outlet pipe section is equipped with a fourth valve.

10. An air separation system, characterized in that, The device includes an anti-icing device and an air separation unit as described in any one of claims 1-9, wherein the air separation unit includes a control valve that forms the component to be heated, and the heating tube surrounds the outer periphery of the control valve.

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