Corrosion-resistant industrial heater

Abstract

The utility model relates to the technical field of industrial heaters, in particular to a corrosion-resistant industrial heater which comprises a heat preservation cylinder, a connecting flange is arranged at the right end of the heat preservation cylinder, a junction box is fixedly installed on the connecting flange through bolts, and a U-shaped heating pipe is arranged on the left side of the junction box and located on the inner side of the heat preservation cylinder. A liquid inlet pipe with the middle end fixedly provided with an intelligent flow control valve is arranged at the right end of the top of the heat preservation barrel, a temperature sensor is fixedly installed at the left end of the top of an inner cavity of the heat preservation barrel, and an inner sacrificial anode protection coating and an outer sacrificial anode protection coating are arranged at the middle ends of the inner wall and the outer surface of the heat preservation barrel correspondingly. Through cooperation of the structures, the industrial heater has the advantage of being good in corrosion resisting effect, and the problems that an existing industrial heater is prone to being corroded in the long-term use process, equipment performance is reduced, potential safety hazards are increased, and even production operation is affected are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial heaters, and particularly relates to a corrosion-resistant industrial heater. Background Art

[0002] Industrial heaters are commonly used equipment in industrial production and life, and are widely used in fields such as petrochemical, chemical, electric power, metallurgy, food, etc. Its function is to achieve heat transfer between fluids, transfer the heat energy of high-temperature fluids to low-temperature fluids, so as to achieve the purpose of energy conservation and energy utilization.

[0003] At present, existing industrial heaters are prone to corrosion during long-term use, resulting in a decline in equipment performance, an increase in safety hazards, and even affecting production operations. For this reason, we propose a corrosion-resistant industrial heater. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a corrosion-resistant industrial heater, which has the advantage of good corrosion resistance, and solves the problems that existing industrial heaters are prone to corrosion during long-term use, resulting in a decline in equipment performance, an increase in safety hazards, and even affecting production operations.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A corrosion-resistant industrial heater, including a heat preservation cylinder, a connection flange is arranged at the right end of the heat preservation cylinder, the connection flange is fixedly installed with a junction box through bolts, a U-shaped heating pipe is arranged on the left side of the junction box and inside the heat preservation cylinder, a liquid inlet pipe with a middle-end fixedly installed intelligent flow control valve is arranged at the right end of the top of the heat preservation cylinder, a temperature sensor is fixedly installed at the left end of the inner cavity top of the heat preservation cylinder, inner sacrificial anode protection coatings and outer sacrificial anode protection coatings are respectively arranged at the middle parts of the inner wall and the outer surface of the heat preservation cylinder, and the heat preservation cylinder sequentially includes a base material layer, a heat preservation layer, a reinforcement layer and a corrosion-resistant layer from inside to outside.

[0006] Preferably, the base material layer is made of stainless steel.

[0007] Preferably, the heat preservation layer is a glass fiber layer, and the heat preservation layer is bonded to the surface of the base material layer.

[0008] Preferably, the reinforcement layer is a layer of aluminum silicate refractory fiber paper, and the reinforcement layer is bonded to the surface of the heat preservation layer.

[0009] Preferably, the corrosion-resistant layer is an alumina ceramic coating, and the corrosion-resistant layer is coated on the surface of the reinforcement layer.

[0010] Preferably, a liquid discharge pipe is arranged at the left end of the top of the heat preservation cylinder.

[0011] Preferably, both the left and right ends of the bottom of the heat preservation cylinder are fixedly connected with support frames, and mounting holes are arranged at both the front and rear ends of the support frames.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1. Through the setting of the intelligent flow control valve, the present utility model can adjust the fluid flow rate, control the flow rate, meet the requirements of the predetermined flow rhythm, and the intelligent flow control valve can adjust and control the flow rate according to different requirements, cooperate with automation devices such as PLC and DCS, and has the characteristics of high flow control accuracy, rapid response, stable operation, etc., avoiding the too high flow rate of the fluid in the heater, which is likely to cause erosion corrosion on the metal surface and exacerbate the corrosion of the heater.

[0014] 2. Through the setting of the temperature sensor, the present utility model can observe the fluid heating situation of the heater in real time through an external terminal device, so as to adjust the heating temperature of the heater, avoid the increase in the chemical reaction rate of the metal material caused by too high temperature, and easily occur problems such as oxidation and corrosion. Through the setting of the external sacrificial anode protection coating and the internal sacrificial anode protection coating, the heater has the ability of anode protection, enables the heater to apply an appropriate anodic polarization current to the metal material in the corrosive medium, form a corrosion-resistant passivation film on the surface and maintain its passivation state, thereby significantly reducing the metal corrosion rate and improving the electrochemical corrosion prevention ability of the heater, further improving the corrosion resistance of the heater, and through the setting of the corrosion-resistant layer, the chemical corrosion resistance of the heater is improved, and the service life of the heater is prolonged. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the first perspective of the present utility model;

[0016] Figure 2 is a schematic sectional structural diagram of the second perspective of the present utility model;

[0017] Figure 3 is a schematic structural diagram of the corrosion-resistant layer of the present utility model.

[0018] In the figure: 1, heat preservation cylinder; 101, base material layer; 102, heat preservation layer; 103, reinforcing layer; 104, corrosion-resistant layer; 2, support frame; 3, external sacrificial anode protection coating; 4, drain pipe; 5, junction box; 6, connecting flange; 7, intelligent flow control valve; 8, inlet pipe; 9, temperature sensor; 10, U-shaped heating pipe; 11, internal sacrificial anode protection coating. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0020] In the description of the present utility model, unless otherwise specified, "a plurality of" means two or more; the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0021] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0022] It should be noted that the components such as the heat preservation cylinder 1, the base material layer 101, the heat preservation layer 102, the reinforcement layer 103, the corrosion-resistant layer 104, the support frame 2, the external sacrificial anode protection coating 3, the drain pipe 4, the junction box 5, the connecting flange 6, the intelligent flow control valve 7, the inlet pipe 8, the temperature sensor 9, the U-shaped heating pipe 10, and the internal sacrificial anode protection coating 11 of this application are all common standard parts or parts known to those skilled in the art. Their structures and principles can all be known by those skilled in the art through technical manuals or obtained through conventional experimental methods, and the connection with the power circuit adopts the conventional connection method in the prior art, which will not be elaborated here.

[0023] Embodiment 1

[0024] Please refer to Figures 1-3As shown in the figure, the present utility model provides a technical solution: a corrosion-resistant industrial heater, which includes a heat preservation cylinder 1. A connecting flange 6 is provided at the right end of the heat preservation cylinder 1. The connecting flange 6 is fixedly installed with a junction box 5 through bolts. On the left side of the junction box 5 and inside the heat preservation cylinder 1, a U-shaped heating pipe 10 is provided. At the right end of the top of the heat preservation cylinder 1, a liquid inlet pipe 8 with an intelligent flow control valve 7 fixedly installed in the middle is provided. At the left end of the inner cavity top of the heat preservation cylinder 1, a temperature sensor 9 is fixedly installed. Inner sacrificial anode protection coatings 11 and outer sacrificial anode protection coatings 3 are respectively provided at the middle parts of the inner wall and the outer surface of the heat preservation cylinder 1. The heat preservation cylinder 1 sequentially includes a base material layer 101, a heat preservation layer 102, a reinforcing layer 103, and a corrosion-resistant layer 104 from the inside to the outside. The base material layer 101 is made of stainless steel. The heat preservation layer 102 is a glass fiber layer, and the heat preservation layer 102 is bonded to the surface of the base material layer 101. The reinforcing layer 103 is a layer of aluminum silicate refractory fiber paper, and the reinforcing layer 103 is bonded to the surface of the heat preservation layer 102. The corrosion-resistant layer 104 is an alumina ceramic coating, and the corrosion-resistant layer 104 is coated on the surface of the reinforcing layer 103.

[0025] In this technical solution: After the junction box 5 and the U-shaped heating pipe 10 are fixedly installed through the connecting flange 6, and with the assistance of the liquid inlet pipe 8, the heating requirement of the liquid can be realized. The setting of the intelligent flow control valve 7 can adjust the fluid flow rate, control the flow rate, and meet the requirements of the predetermined flow rhythm. Moreover, the intelligent flow control valve 7 can adjust and control the flow rate according to different requirements, and cooperate with automation devices such as PLC and DCS to achieve various characteristics such as high flow control accuracy, rapid response, and stable operation, avoiding the situation that the fluid flow rate in the heater is too high, which is likely to cause erosion corrosion on the metal surface and exacerbate the corrosion of the heater. Through the setting of the temperature sensor 9, the fluid heating situation of this heater can be observed in real time through an external terminal device, so as to adjust the heating temperature of this heater and avoid problems such as an increase in the chemical reaction rate of the metal material due to too high temperature, which is likely to occur oxidation, corrosion, etc. Through the setting of the outer sacrificial anode protection coating 3 and the inner sacrificial anode protection coating 11, this heater is equipped with the ability of anode protection, enabling the metal material in the corrosive medium of this heater to pass through an appropriate anodic polarization current, forming a corrosion-resistant passivation film on the surface and maintaining its passivation state, thereby significantly reducing the metal corrosion rate and improving the electrochemical corrosion prevention ability of this heater, further improving the corrosion resistance of this heater. And through the setting of the corrosion-resistant layer 104, the chemical corrosion resistance of this heater is improved, and the service life of this heater is extended. The setting of the heat preservation layer 102 and the reinforcing layer 103 improves the heat preservation and heat insulation performance of this heater.

[0026] Embodiment 2

[0027] On the basis of Embodiment 1, the present utility model is as Figures 1-2As shown, a drain pipe 4 is provided at the left end of the top of the heat preservation cylinder 1. Support frames 2 are fixedly connected to both the left and right ends of the bottom of the heat preservation cylinder 1, and mounting holes are provided at both the front and rear ends of the support frames 2.

[0028] In this technical solution: through the setting of the drain pipe 4, it is convenient to discharge the liquid after being heated by this heater. Through the setting of the support frames 2, this heater can be stably supported and positioned.

[0029] Importantly, it should be noted that the structures and arrangements of the present application shown in multiple different exemplary embodiments are only illustrative. Although only a few embodiments are described in detail in this disclosure, those who refer to this disclosure should easily understand that many modifications are possible on the premise of not substantially deviating from the novel teachings and advantages of the subject matter described in this application (for example, the sizes, scales, structures, shapes and proportions of various components, and parameter values (such as temperature, pressure, etc.), installation arrangements, use of materials, changes in color, orientation, etc.). For example, an element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature, number or position of discrete elements can be changed or altered. Therefore, all such modifications are intended to be included within the scope of the present utility model. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "means-plus-function" clause is intended to cover the structures that perform the recited function described herein, and not only structurally equivalent but also equivalent structures. Other substitutions, modifications, changes and omissions can be made in the design, operating conditions and arrangements of the exemplary embodiments without departing from the scope of the present utility model. Therefore, the present utility model is not limited to a specific embodiment, but extends to various modifications that still fall within the scope of the appended claims.

[0030] In addition, in order to provide a concise description of the exemplary embodiments, not all features of the actual embodiments may be described (i.e., those features that are not relevant to the currently considered best mode of implementing the present utility model, or those features that are not relevant to the implementation of the present utility model).

[0031] 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 the protection scope of the present utility model. Although the present utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present utility model can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present utility model.

Claims

1. A corrosion-resistant industrial heater, comprising a heat preservation tube (1), characterized in that: The right end of the insulation cylinder (1) is provided with a connecting flange (6), and a junction box (5) is fixedly installed on the connecting flange (6) by means of bolts. A U-shaped heating tube (10) is provided on the left side of the junction box (5) and located inside the insulation cylinder (1). The right end of the top of the insulation cylinder (1) is provided with a liquid inlet pipe (8) with an intelligent flow control valve (7) fixedly installed in the middle end. A temperature sensor (9) is fixedly installed at the left end of the top of the inner cavity of the insulation cylinder (1). The middle ends of the inner wall and outer surface of the insulation cylinder (1) are respectively provided with an inner sacrificial anode protective coating (11) and an outer sacrificial anode protective coating (3). The insulation cylinder (1) comprises, from the inside to the outside, a base material layer (101), a heat-insulating layer (102), a reinforcing layer (103) and a corrosion-resistant layer (104).

2. A corrosion-resistant industrial heater according to claim 1, characterized in that: The substrate layer (101) is made of stainless steel.

3. A corrosion-resistant industrial heater according to claim 1, characterized in that: The thermal insulation layer (102) is a glass fiber layer, and the thermal insulation layer (102) is bonded to the surface of the base material layer (101).

4. A corrosion-resistant industrial heater according to claim 1, characterized in that: The reinforcing layer (103) is an aluminum silicate refractory fiber paper layer, and the reinforcing layer (103) is bonded to the surface of the thermal insulation layer (102).

5. The corrosion-resistant industrial heater according to claim 1, characterized in that: The corrosion-resistant layer (104) is an aluminum oxide ceramic coating, and the corrosion-resistant layer (104) is coated on the surface of the reinforcement layer (103).

6. The corrosion-resistant industrial heater according to claim 1, characterized in that: A liquid discharge pipe (4) is provided at the left end of the top of the heat preservation cylinder (1).

7. The corrosion-resistant industrial heater according to claim 1, characterized in that: The left and right ends of the bottom of the heat preservation cylinder (1) are fixedly connected to a support frame (2), and the front and rear ends of the support frame (2) are provided with mounting holes.

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