High-temperature steam secondary heating device

Abstract

The utility model relates to a high-temperature steam secondary heating device which is characterized in that a steam heating pipe is used for heating steam at a high temperature, the steam heating pipe is sleeved with a secondary heating pipe, and a closed cavity formed between the inner wall of the secondary heating pipe and the outer wall of the steam heating pipe is used for steam storage and secondary heating; a first port of the steam heating pipe is arranged outside the secondary heating pipe and used for being connected with a water inlet pipe, and a second port of the steam heating pipe is arranged in the secondary heating pipe cavity; the end, close to the second port of the steam heating pipe, of the secondary heating pipe is provided with a steam exhaust port, and the steam exhaust port is communicated with an inner cavity of the secondary heating pipe and serves as a high-pressure steam outlet to be externally connected with steam using equipment. According to the structure that the heating wire heats steam in the inner pipe and the outer pipe at the same time, the heating efficiency is high; and through the arrangement of the protective shell and the wedge-shaped support, the device is obliquely installed, water can be fully heated in the inner pipe, and meanwhile the water can be prevented from entering the secondary heating cavity.

Description

Technical Field

[0001] The present application belongs to the technical field of steam heating equipment, and in particular relates to a high-temperature steam secondary heating device. Background Art

[0002] High-temperature steam is widely used in various industrial processes, such as chemical, pharmaceutical, and food processing. However, traditional steam heating devices have limitations in heating efficiency and steam volume, especially in scenarios requiring high-temperature, high-pressure steam. Existing high-temperature steam equipment often uses a single-stage heating process, resulting in unstable steam temperature and pressure, impacting production efficiency and product quality. Utility Model Content

[0003] The technical problem to be solved by the present invention is: to solve the deficiencies in the existing technology, a high-temperature steam secondary heating device is provided, which improves the structure of the existing steam heating pipe and adds a secondary heating pipe structure, thereby improving the heating efficiency and increasing the high-temperature steam storage capacity.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] A high-temperature steam secondary heating device, comprising:

[0006] A steam heating pipe is used to heat steam at high temperature. A secondary heating pipe is provided on the outer surface of the steam heating pipe. The closed cavity formed between the inner wall of the secondary heating pipe and the outer wall of the steam heating pipe is used to store steam and perform secondary heating.

[0007] The first port of the steam heating pipe is external to the secondary heating pipe for connecting to the water inlet pipe, and the second port of the steam heating pipe is internal to the secondary heating pipe cavity;

[0008] The secondary heating pipe is provided with a steam exhaust port, which is communicated with the inner cavity of the secondary heating pipe and serves as a high-pressure steam outlet for connecting to external steam-using equipment.

[0009] Preferably, in a high-temperature steam secondary heating device of the present invention, a protective shell is fixedly connected to the outside of the secondary heating tube, and a bracket is provided at the bottom of the protective shell, and the bracket is used to fix and support the secondary heating tube horizontally or obliquely.

[0010] Preferably, in a high-temperature steam secondary heating device of the present invention, the bracket is configured as a wedge-shaped bracket, the wedge-shaped bracket is used to tilt and fix the secondary heating pipe, and the second port side of the steam heating pipe is higher than the first port side.

[0011] Preferably, in a high-temperature steam secondary heating device of the present invention, the exhaust port is arranged on the side of the secondary heating pipe close to the second port of the steam heating pipe.

[0012] Preferably, in a high-temperature steam secondary heating device of the present invention, the exhaust port is arranged on the side of the secondary heating pipe close to the first port of the steam heating pipe.

[0013] Preferably, in a high-temperature steam secondary heating device of the present invention, the steam heating tube comprises an inner tube, an outer tube, an insulating tube and a heating wire, both ends of the inner tube are inserted into the outer tube, and the cavity between the inner tube and the outer tube is provided with an insulating tube and a spiral heating wire.

[0014] Preferably, in the high-temperature steam secondary heating device of the present invention, an electrode wire is further plugged into the insulating tube, and the electrode wire is connected to the heating wire.

[0015] Preferably, in the high-temperature steam secondary heating device of the present invention, a resistance wire for measuring the heating temperature is further plugged into the insulating tube.

[0016] Preferably, in the high-temperature steam secondary heating device of the present invention, the protective shell is further connected to a wiring terminal and a temperature control switch, and the electrode wire and the resistance wire are respectively connected to the wiring terminal and the temperature control switch.

[0017] The beneficial effects of the utility model are:

[0018] (1) Improve steam temperature and pressure stability: Through secondary heating, the high-temperature steam secondary heating device of the utility model can significantly improve the temperature and pressure stability of steam, meeting the demand for high-temperature and high-pressure steam in industrial production;

[0019] (2) Improve heating efficiency: The heating wire heats the steam in the inner and outer tubes at the same time, which has high heating efficiency;

[0020] (3) The arrangement of the protective shell and the wedge-shaped bracket allows the device to be installed at an angle, so that the water in the inner tube can be fully heated, while also preventing water from entering the secondary heating cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The technical solution of the present application is further described below with reference to the accompanying drawings and embodiments.

[0022] Figure 1 This is a schematic diagram of the external structure of the device in Example 1 of the present application;

[0023] Figure 2 1 is a schematic diagram of the longitudinal cross-sectional structure of the device in Example 1 of the present application;

[0024] Figure 3is a horizontal cross-sectional structure schematic diagram of the device of embodiment 1 of the present application;

[0025] Figure 4 is an external structure schematic diagram of the device of embodiment 2 of the present application;

[0026] Figure 5 is an external structure schematic diagram of the device of embodiment 3 of the present application;

[0027] Figure 6 is a cross-sectional structure schematic diagram of the device of embodiment 4 of the present application.

[0028] The reference signs in the drawings are as follows:

[0029] Steam heating pipe 10, secondary heating pipe 20, steam exhaust port 21, protective shell 30, support 31. DETAILED DESCRIPTION

[0030] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0031] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms “center”, “longitudinal”, “lateral”, “upper”, “lower”, “front”, “rear”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, “outer” and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the scope of protection of the present application. In addition, the terms “first”, “second” and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by “first”, “second” and the like can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified and limited, the term “a plurality of” means two or more.

[0032] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms “mounting”, “connection”, “connecting” should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or integrally connected; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium, or can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0033] The technical solutions of the present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0034] Embodiment 1

[0035] The embodiment provides a high-temperature steam secondary heating device. Figure 1-3 The structure comprises a steam heating pipe 10, a secondary heating pipe 20 and a protective shell 30.

[0036] Preferably, the high-temperature steam secondary heating device of the embodiment, the steam heating pipe 10 comprises an inner pipe, an insulating pipe and an outer pipe which are sequentially sleeved, the inner pipe is inserted into the inner cavity of the outer pipe in a through type, and the two ends of the outer pipe are provided with a sealing connection of a cover, the inner pipe and the outer pipe of the steam heating pipe 10 are provided with the insulating pipe, the insulating pipe is filled with a spiral heating wire, and the heating wire is used for heating steam.

[0037] Preferably, the high-temperature steam secondary heating device of the embodiment, the first port of the inner pipe of the steam heating pipe 10 is connected with a water inlet pipe through a flange, the second port of the inner pipe of the steam heating pipe 10 is built-in a cavity of the secondary heating pipe 20. A sealed cavity is formed between the secondary heating pipe 20 and the outer pipe for steam storage and secondary heating. An exhaust port 21 is axially arranged at the end of the secondary heating pipe 20 close to the second port of the steam heating pipe 10, the exhaust port 21 is connected with a high-pressure steam pipeline through a flange, and is used for conveying the heated steam to a steam equipment.

[0038] Preferably, the high-temperature steam secondary heating device of the embodiment, the protective shell 30 is made of a heat insulation material, a support 31 is arranged at the bottom of the protective shell 30, the support 31 is arranged as a wedge-shaped support, and the wedge-shaped support is used for obliquely fixing and supporting the secondary heating pipe 20. After the wedge-shaped support is installed on a rack or equipment, the second port side of the inner pipe of the steam heating pipe 10 is higher than the first port side, and the exhaust port 21 is located above the second port of the inner pipe, so that high-temperature steam is conveniently discharged.

[0039] Preferably, the high-temperature steam secondary heating device of the embodiment, an electrode wire is further inserted into the insulating pipe, the electrode wire is connected with the heating wire, and a resistance wire for measuring a heating temperature is further inserted into the insulating pipe.

[0040] A wiring terminal and a temperature control switch are arranged on the side wall of the protective shell 30, and the electrode wire and the resistance wire are respectively connected to the wiring terminal and the temperature control switch. A user can adjust the heating temperature through the temperature control switch, and connect a power supply through the wiring terminal.

[0041] In actual use, water is first injected into the steam heating tube 10 through the water inlet pipe, and then the heating wire is activated to heat the water. The water is heated to high-temperature steam by the heating wire, and then enters the cavity of the secondary heating tube 20 for secondary heating. The steam after secondary heating is discharged from the exhaust port 21 and transported to the steam-consuming equipment through the high-pressure steam pipeline. During the heating process, the resistance wire monitors the heating temperature in real time and transmits the temperature signal to the temperature control switch. If the temperature exceeds the set value, the temperature control switch automatically cuts off the power supply to protect the equipment and prevent steam overheating.

[0042] Example 2

[0043] Different from Example 1, in this embodiment, reference Figure 4 The exhaust port 21 is radially connected to the secondary heating pipe 20, and the exhaust port 21 is close to the second port of the steam heating pipe 10. The exhaust port 21 is connected to the high-pressure steam pipe through a flange, which is used to transport the heated steam to the steam-using equipment, facilitating radial steam delivery and connection with the equipment.

[0044] Example 3

[0045] Different from Examples 1 and 2, in this embodiment, reference Figure 5 The exhaust port 21 is radially connected to the secondary heating pipe 20 , and the exhaust port 21 is close to the first port of the steam heating pipe 10 .

[0046] A bracket 31 is connected to the bottom of the protective shell 30 . The bracket 31 is configured as a horizontal bracket for horizontally fixing and supporting the secondary heating tube 20 .

[0047] For steam-consuming equipment that requires the water inlet and exhaust sections to be on one side, the utility model device provided in this embodiment can well meet the requirements.

[0048] Example 4

[0049] Different from the embodiment 1-3, the outer tube of the steam heating tube 10 and the secondary heating tube 20 in the embodiment 1-3 are both set as round tubes, while in this embodiment, the outer tube of the steam heating tube 10 and the secondary heating tube 20 are both set as round tubes. Figure 6 The outer tube of the steam heating tube 10 and the secondary heating tube 20 are both set as square tubes. The insulating tube adopts a square outer and round inner design to match the installation of the inner and outer tubes. The secondary heating tube 20 and the protective shell 30 are designed in a similar shape and are set to a square shape, which can increase the volume of its inner cavity, thereby increasing the steam storage capacity.

[0050] It can be seen from the above embodiments that the high-temperature steam secondary heating device of the present invention has the advantages of high heating efficiency, stable steam temperature and pressure, safety and reliability, and is suitable for various industrial production fields requiring high-temperature and high-pressure steam.

[0051] Based on the above-mentioned ideal embodiments of this application, and in accordance with the above description, relevant personnel can make various changes and modifications without departing from the scope of the technical concept of this application. The technical scope of this application is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A high-temperature steam secondary heating device, characterized in that: include: A steam heating pipe (10), the steam heating pipe (10) is used for heating steam at high temperature, a secondary heating pipe (20) is provided on the outer shell of the steam heating pipe (10), and a closed cavity formed between the inner wall of the secondary heating pipe (20) and the outer wall of the steam heating pipe (10) is used for storing steam and secondary heating; The first port of the steam heating pipe (10) is externally disposed on the secondary heating pipe (20) for connecting to a water inlet pipe, and the second port of the steam heating pipe (10) is internally disposed within the cavity of the secondary heating pipe (20); The secondary heating pipe (20) is provided with a steam exhaust port (21), which is communicated with the inner cavity of the secondary heating pipe (20) and serves as a high-pressure steam outlet for connecting to external steam-using equipment.

2. A high-temperature steam secondary heating device according to claim 1, characterized in that: The outer side of the secondary heating tube (20) is also fixedly connected to a protective shell (30), and a bracket (31) is provided at the bottom of the protective shell (30). The bracket (31) is used to fix and support the secondary heating tube (20) horizontally or obliquely.

3. A high-temperature steam secondary heating device according to claim 2, characterized in that: The bracket (31) is configured as a wedge-shaped bracket, and the wedge-shaped bracket is used for tilting and fixing the secondary heating pipe (20), and the second port side of the steam heating pipe (10) is higher than the first port side.

4. A high-temperature steam secondary heating device according to claim 3, characterized in that: The steam exhaust port (21) is arranged on the side of the secondary heating pipe close to the second port of the steam heating pipe.

5. The high-temperature steam secondary heating device according to claim 2, characterized in that: The steam exhaust port (21) is arranged on the side of the secondary heating pipe close to the first port of the steam heating pipe.

6. A high-temperature steam secondary heating device according to any one of claims 1 to 5, characterized in that: The steam heating pipe (10) comprises an inner pipe, an outer pipe, an insulating pipe and a heating wire; both ends of the inner pipe are inserted into the outer pipe in a through-type manner; and the cavity between the inner pipe and the outer pipe is provided with an insulating pipe and a spiral heating wire.

7. A high-temperature steam secondary heating device according to claim 6, characterized in that: The insulating tube is also plugged with an electrode wire, which is connected to the heating wire.

8. The high-temperature steam secondary heating device according to claim 7, characterized in that: The insulating tube is also plugged with a resistance wire for measuring the heating temperature.

9. The high-temperature steam secondary heating device according to claim 8, characterized in that: The protective shell (30) is also connected to a wiring terminal and a temperature control switch, and the electrode wire and the resistance wire are respectively connected to the wiring terminal and the temperature control switch.

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