Automatic deicing device for low-temperature heat exchanger

Abstract

The utility model relates to an automatic deicing device for a low-temperature heat exchanger. The automatic deicing device for the low-temperature heat exchanger comprises a steam heat exchange tube bundle, a temperature sensor and a controller. The steam heat exchange tube bundle is arranged on one side of the low-temperature heat exchanger, the steam adjusting valve is installed at the inlet end of the steam heat exchange tube bundle, the nozzles are evenly distributed on the steam heat exchange tube bundle, the installation positions, the number and the spraying angles of the nozzles are designed according to the heat exchange condition of all heat exchange faces of the low-temperature heat exchanger, and the steam adjusting valve is electrically connected with the controller. The controller is electrically connected with the temperature sensor which is installed on the surface of the low-temperature heat exchanger. Automatic deicing is carried out through the steam heat exchange tube bundle, manual operation is not needed, the labor cost is saved, and meanwhile the safety risks that an operator is scalded by steam, and the operator is injured by falling ice can be eliminated; the steam nozzles are installed in a distributed mode, energy is saved, and the deicing effect is good.

Description

Technical Field

[0001] The present application relates to the technical field of cryogenic heat exchanger protection, and in particular to an automatic deicing device for a cryogenic heat exchanger. Background Art

[0002] In related technologies, ice accumulation on the surface of low-temperature heat exchangers affects heat exchange efficiency and can also cause safety hazards such as deformation and tearing of the heat exchanger. Traditionally, heat exchangers are de-iced using manual firefighting water spraying. This poor de-icing effect leads to severe localized ice accumulation, severely impacting heat exchange efficiency. Heavy ice can cause the heat exchanger to crack and deform, and personnel can be easily struck and injured by large chunks of falling ice during the de-icing process. Later, manual de-icing of steam pipes was adopted, but personnel also face the risk of being struck and injured by falling ice during de-icing operations. Furthermore, personnel can be burned by high-temperature steam while dragging steam pipes. Utility Model Content

[0003] In order to solve or partially solve the problems existing in the related art, the present application provides an automatic deicing device for a low-temperature heat exchanger, which can improve the deicing efficiency to improve the heat exchange efficiency and eliminate safety hazards such as deformation and tearing of the heat exchanger caused by ice accumulation.

[0004] The present application provides an automatic deicing device for a low-temperature heat exchanger, comprising a steam heat exchange tube bundle 1, a temperature sensor 3, and a controller; the steam heat exchange tube bundle 1 is arranged on one side of the low-temperature heat exchanger 6, and a steam regulating valve 4 is installed at its inlet end. Nozzles 2 are evenly distributed on the steam heat exchange tube bundle 1, and the installation position, number, and spray angle of the nozzles 2 are designed according to the heat exchange conditions of each heat exchange surface of the low-temperature heat exchanger 6. The steam regulating valve 4 is electrically connected to the controller, and the controller is electrically connected to the temperature sensor 3. The temperature sensor 3 is installed on the surface of the low-temperature heat exchanger 6.

[0005] Optionally, in some solutions, the steam heat exchange tube bundle 1 is made of stainless steel tubes.

[0006] Optionally, in some solutions, a steam trap 5 is installed at the outlet end of the steam heat exchange tube bundle 1 .

[0007] The technical solution provided by this application may have the following beneficial effects:

[0008] This application uses steam heat exchange tube bundles for automatic de-icing, which does not require manual operation, saves labor costs, and eliminates safety risks such as operators being scalded by steam or injured by falling ice. The steam nozzles are installed in a distributed manner, which saves energy and has a good de-icing effect.

[0009] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The above and other objects, features and advantages of the present application will become more apparent through a more detailed description of exemplary embodiments of the present application in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present application.

[0011] Figure 1 1 is a schematic structural diagram of an automatic deicing device for a low-temperature heat exchanger according to an embodiment of the present application;

[0012] Figure 2 This is a schematic diagram of the installation structure of an automatic deicing device for a low-temperature heat exchanger shown in an embodiment of the present application.

[0013] Reference numerals:

[0014] 1-steam heat exchange tube bundle, 2-nozzle, 3-temperature sensor, 4-steam regulating valve, 5-trap, 6-low-temperature heat exchanger. DETAILED DESCRIPTION

[0015] The following describes embodiments of the present application in more detail with reference to the accompanying drawings. Although the accompanying drawings illustrate embodiments of the present application, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0016] It should be understood that although the terms "first", "second", "third", etc. may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0017] In the description of this application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0018] Unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be interpreted broadly. For example, they may refer to fixed or detachable connections, or integration; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0019] In response to the above problems, an embodiment of the present application provides an automatic deicing device for a low-temperature heat exchanger, which can improve the deicing efficiency to improve the heat exchange efficiency and eliminate safety hazards such as deformation and tearing of the heat exchanger caused by ice accumulation.

[0020] The technical solutions of the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0021] See also Figure 1-2 The automatic deicing device for a low-temperature heat exchanger includes a steam heat exchange tube bundle 1, a temperature sensor 3, and a controller; the steam heat exchange tube bundle 1 is arranged on one side of the low-temperature heat exchanger 6, and a steam regulating valve 4 is installed at its inlet end. Nozzles 2 are evenly distributed on the steam heat exchange tube bundle 1, and the installation position, number, and spray angle of the nozzles 2 are designed according to the heat exchange conditions of each heat exchange surface of the low-temperature heat exchanger 6. The steam regulating valve 4 is electrically connected to the controller, and the controller is electrically connected to the temperature sensor 3. The temperature sensor 3 is installed on the surface of the low-temperature heat exchanger 6.

[0022] During operation, the nozzle 2 is used to spray steam to heat and de-ice the ice. The installation position, number and spray angle of the nozzle are designed according to the heat exchange conditions of each heat exchange surface of the heat exchanger to improve the heat exchange efficiency and reduce steam consumption. The temperature sensor 3 is used to detect the surface temperature of the heat exchanger. The regulating valve 4 is used to control the opening and closing of the steam heat exchange tube bundle 1, which is interlocked with the surface temperature of the low-temperature heat exchanger 6 to realize automatic switching and regulating the steam flow to de-ice the surface of the low-temperature heat exchanger 6. The temperature sensor 3 detects the surface temperature of the low-temperature heat exchanger 6 and transmits the information to the controller in real time. The controller controls the steam flow of the regulating valve 4 according to the detected surface temperature of the low-temperature heat exchanger 6 to avoid insufficient steam to remove the ice on the surface of the low-temperature heat exchanger 6 or excessive steam causing steam waste.

[0023] In some embodiments, the steam heat exchange tube bundle 1 is made of stainless steel tubes.

[0024] During operation, the stainless steel pipe can prevent rust from occurring in a humid and temperature-changing environment, which may cause nozzle clogging, and can also extend the service life.

[0025] In some embodiments, a steam trap 5 is installed at the outlet end of the steam heat exchange tube bundle 1 .

[0026] During operation, the steam trap 5 is used to drain the water accumulated in the steam heat exchange tube bundle 1 to prevent water hammer vibration in the pipeline, which would affect the use of the automatic deicing device.

[0027] Finally, it should be noted that, in this document, relationships such as first and second, etc., are used solely to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms include, comprise, or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0028] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0029] The embodiments of the present application have been described above. The above description is illustrative and not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is selected to best explain the principles of the embodiments, their practical applications, or improvements to the technology in the market, or to enable other persons skilled in the art to understand the embodiments disclosed herein.

Claims

1. An automatic deicing device for a low-temperature heat exchanger, characterized in that: The automatic deicing device for a low-temperature heat exchanger comprises a steam heat exchange tube bundle (1), a temperature sensor (3), and a controller; the steam heat exchange tube bundle (1) is arranged on one side of the low-temperature heat exchanger (6), a steam regulating valve (4) is installed at its inlet end, nozzles (2) are evenly distributed on the steam heat exchange tube bundle (1), and the installation position, number and spray angle of the nozzles (2) are designed according to the heat exchange conditions of each heat exchange surface of the low-temperature heat exchanger (6), the steam regulating valve (4) is electrically connected to the controller, the controller is electrically connected to the temperature sensor (3), and the temperature sensor (3) is installed on the surface of the low-temperature heat exchanger (6).

2. The automatic deicing device for a low-temperature heat exchanger according to claim 1, characterized in that: The steam heat exchange tube bundle (1) is made of stainless steel tubes.

3. The automatic deicing device for a low-temperature heat exchanger according to claim 1 or 2, characterized in that: A steam trap (5) is installed at the outlet end of the steam heat exchange tube bundle (1).

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