Temperature control heating unit of fresh water preheater control box

Abstract

The invention relates to the technical field of control box temperature control, and provides a temperature control heating unit of a fresh water preheater control box, the temperature control heating unit comprises a mounting cavity arranged on a control box door and a loading plate which is arranged in the mounting cavity and can move towards the direction of a control box body, and a temperature control rod is movably arranged on the loading plate in a dot-matrix manner in a penetrating manner; the temperature control rod is axially divided into a plurality of heating sections, electric heating parts are arranged in the heating sections, and temperature sensors are embedded in the heating sections; the temperature control rods are evenly distributed in the control box, the heating sections on the temperature control rods correspond to certain areas in the control box respectively, the temperature of the areas is monitored through the corresponding temperature sensors, the temperature in the control box is regulated and controlled in a targeted mode in the areas, and the condensation phenomenon in the control box is effectively prevented; and performance reduction of electronic elements caused by over-high regional temperature due to temperature control heating superposition of the electronic elements can be avoided, so that the control precision and stability of the fresh water preheater are ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of temperature control of control boxes, and particularly relates to a temperature control and heating unit of a fresh water pre-heater control box. BACKGROUND

[0002] A ship fresh water pre-heater is a core device for ensuring stable operation of key systems such as main engine cooling and fuel atomization. Precise electronic components such as a PLC controller, a relay group, and a power module are integrated in the control box. In the marine environment, the temperature difference between day and night is significant, and the air humidity is relatively high. Such special environmental conditions make the control box prone to condensation. Condensed water adheres to the surface of the electronic components, causing corrosion of the circuit board, insulation failure, and short circuit risk, which seriously threatens the system reliability. Therefore, a temperature control and heating unit is currently arranged in the fresh water pre-heater control box to keep the temperature in the box within an appropriate temperature range (higher than the dew point temperature) to avoid condensation.

[0003] The existing temperature control and heating unit generally adopts a whole heating strategy, which regards the control box as a uniform temperature field. The temperature is adjusted by uniformly heating the entire control box with a heating device. However, in reality, the temperature at different positions in the control box is not uniform. The electronic components in the control box generate heat during operation. The power, heat generation, and layout position of different electronic components will cause temperature differences in the control box. For example, the temperature around electronic components with high power is relatively high, while the temperature in areas far from these components is relatively low. In this case, using the whole temperature control method to heat the control box will further increase the temperature in the areas with originally high temperature. The excessively high temperature not only accelerates the aging of the electronic components and reduces their service life, but also may cause performance degradation of the electronic components, which is not conducive to the normal operation of the electronic components and affects the control precision and stability of the fresh water pre-heater.

[0004] Therefore, the present application proposes a temperature control and heating unit of a fresh water pre-heater control box to solve the above problems. SUMMARY

[0005] The embodiment of the present application aims to provide a temperature control and heating unit of a fresh water pre-heater control box to solve the above problems.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solutions: The temperature control heating unit of the fresh water pre-heater control box comprises a mounting cavity arranged on the control box door and a loading plate capable of moving towards the control box body, a dot matrix movable through hole is arranged on the loading plate and is provided with a temperature control rod, which is used for regionally and specifically regulating the temperature inside the control box, the temperature control rod also movably penetrates the control box door, the temperature control rod is axially divided into a plurality of heating sections, an electric heating element is arranged in the heating section, and a temperature sensor is also embedded in the heating section.

[0007] In an optional solution, the loading plate is provided with a through hole corresponding to the temperature control rod, the temperature control rod movably penetrates the loading plate through the corresponding through hole, and the tail end of the temperature control rod is provided with a limiting piece.

[0008] In an optional solution, the head end of the temperature control rod is provided with a protective piece.

[0009] In an optional solution, a heat insulation sheet is arranged between the end portions of two adjacent heating sections, the heating section is provided with a concave hole, the temperature sensor is arranged in the concave hole, and the hole wall and the hole bottom of the concave hole are both provided with a heat insulation layer.

[0010] In an optional solution, the temperature control heating unit further comprises a plurality of first telescopic pieces for driving the loading plate to move towards the control box body.

[0011] In an optional solution, the temperature control heating unit further comprises a positioning assembly for positioning the temperature control rod.

[0012] In an optional solution, the positioning assembly comprises an air channel arranged in the loading plate and a gas control piece for injecting gas into the air channel or extracting gas from the air channel, at least one air cavity in communication with the air channel is arranged on the side of the through hole, a first sealing piston is arranged in the air cavity, a stand is arranged on the first sealing piston and is used for abutting against the temperature control rod In an optional solution, the gas control piece comprises a gas cylinder and a second sealing piston arranged in the gas cylinder, the gas cylinder is in communication with the air channel, and a second telescopic piece is further arranged in the gas cylinder, the active end of the second telescopic piece is connected with the second sealing piston In an optional solution, a rubber ring is further arranged in the through hole and is used for extruding the temperature control rod to provide a certain pre-tightening force for the temperature control rod.

[0013] Compared with the prior art, the beneficial effects of the embodiment of the present application are as follows: The temperature control rods are evenly distributed in the control box, and the heating sections on the temperature control rods correspond to certain areas in the control box and monitor the temperature of the areas through corresponding temperature sensors. When the monitored temperature of an area is lower than the set temperature threshold, the electric heating element in the corresponding heating section starts to heat the area until the set temperature range is reached. The area-specific regulation of the temperature in the control box effectively prevents condensation in the control box and avoids the performance degradation of electronic components caused by the superimposed temperature control heating and the self-heating of the electronic components, thereby ensuring the control accuracy and stability of the fresh water pre-heater.

[0014] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and are not limiting to the present application. BRIEF DESCRIPTION OF DRAWINGS

[0015] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and serve to explain the principles of the present application. These drawings and description, however, are not intended to limit the scope of the present application in any way, but merely to describe particular embodiments of the present application.

[0016] Figure 1 The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and serve to explain the principles of the present application. These drawings and description, however, are not intended to limit the scope of the present application in any way, but merely to describe particular embodiments of the present application.

[0017] Figure 2 The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and serve to explain the principles of the present application. These drawings and description, however, are not intended to limit the scope of the present application in any way, but merely to describe particular embodiments of the present application.

[0018] Figure 3 The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and serve to explain the principles of the present application. These drawings and description, however, are not intended to limit the scope of the present application in any way, but merely to describe particular embodiments of the present application.

[0019] Figure 4 The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and serve to explain the principles of the present application. These drawings and description, however, are not intended to limit the scope of the present application in any way, but merely to describe particular embodiments of the present application.

[0020] Figure 5 The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and serve to explain the principles of the present application. These drawings and description, however, are not intended to limit the scope of the present application in any way, but merely to describe particular embodiments of the present application. Figure 4 The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and serve to explain the principles of the present application. These drawings and description, however, are not intended to limit the scope of the present application in any way, but merely to describe particular embodiments of the present application.

[0021] Figure 6 The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and serve to explain the principles of the present application. These drawings and description, however, are not intended to limit the scope of the present application in any way, but merely to describe particular embodiments of the present application.

[0022] Figure 7 The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and serve to explain the principles of the present application. These drawings and description, however, are not intended to limit the scope of the present application in any way, but merely to describe particular embodiments of the present application.

[0023] Figure 8 The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and serve to explain the principles of the present application. These drawings and description, however, are not intended to limit the scope of the present application in any way, but merely to describe particular embodiments of the present application.

[0024] The reference signs are annotated as follows: 1 - box body, 2 - box door, 3 - mounting cavity, 4 - loading plate, 5 - through hole, 6 - temperature control rod, 601 - heating section, 602 - recessed hole, 603 - temperature sensor, 604 - heat insulation sheet, 605 - heat insulation layer, 7 - first telescopic part, 8 - operation display panel, 9 - positioning assembly, 901 - air channel, 902 - air cavity, 903 - first sealing piston, 904 - stand column, 905 - boss, 906 - gas control part, 9061 - air cylinder, 9062 - second sealing piston, 9063 - second telescopic part, 10 - rubber ring, 11 - limiting part, 12 - protection part. DETAILED DESCRIPTION

[0025] The application will be described in further detail below with reference to the drawings. It is necessary to point out here that the following detailed description is only used to further illustrate the application and cannot be understood as limiting the scope of protection of the application. Those skilled in the art can make some non-essential improvements and adjustments to the application according to the above application content.

[0026] Please refer to Figures 1-5 A temperature control heating unit of a fresh water pre-heater control box, comprising a mounting cavity 3 arranged on a box door of the control box and a loading plate 4 arranged in the mounting cavity 3 and capable of moving towards the control box body, a temperature control rod 6 is arranged on the loading plate 4 in a dot matrix movable penetrating manner, for regional targeted regulation and control of the temperature inside the control box, the temperature control rod 6 also movably penetrates the box door of the control box, the temperature control rod 6 is axially divided into a plurality of heating sections 601 (the heating sections 601 are made of metal materials such as copper, aluminum, etc.), an electric heating element (not shown in the figure, the electric heating element is an electric heating wire, an electric heating tube, etc. in the prior art) is arranged in the heating section 601, and a temperature sensor 603 is also arranged in the heating section 601 in an embedded manner.

[0027] In the initial state, the temperature control rods 6 are in a flush state. After the control box door is closed, the loading plate 4 moves a certain distance toward the control box body. During this process, the temperature control rod 6 is driven to move accordingly. When the head end of the temperature control rod 6 contacts an object (electronic component, mounting beam, etc.), the corresponding temperature control rod 6 moves relative to the loading plate 4 to adapt to the internal layout of the control box. The head end of the temperature control rod 6 that does not contact the object will eventually contact the back side of the control box body. At this point, the temperature control rods 6 are evenly distributed inside the control box. The heating sections 601 on several temperature control rods 6 correspond to certain areas inside the control box and monitor the temperature of the area through corresponding temperature sensors 603. When the monitored area temperature is lower than the set temperature threshold (higher than the dew point temperature), the electric heating element in the corresponding heating section 601 starts to heat the area until it reaches the set temperature threshold. To the set temperature range, the internal temperature of the control box is regulated in a targeted manner in the region, which can not only effectively prevent condensation in the control box, but also avoid the regional temperature being too high due to the temperature control heating and the heating of the electronic components themselves, which leads to the performance degradation of the electronic components, thereby ensuring the control accuracy and stability of the fresh water preheater; it should be noted that when the control box door needs to be opened later (here specifically refers to the situation where the door is hinged on the box body), the loading plate 4 is first reset to drive the temperature control rod 6 to reset (the tail end of the temperature control rod 6 contacts the side of the control box body inside the installation cavity 3 to achieve alignment and reset), and then the control box door is opened to avoid the temperature control rod 6 located between the electronic components from rigidly contacting the electronic components when the control box door is opened, thereby causing damage to the electronic components (the deflection action involved in the door opening process drives the temperature control rod 6 to deflect).

[0028] Furthermore, the loading plate 4 is provided with a through hole 5 which corresponds to and is adapted to the temperature control rod 6 one by one. The temperature control rod 6 is movable through the corresponding through hole 5 and a limit piece 11 is provided at the tail end of the temperature control rod 6. The limit piece 11 is provided to prevent the temperature control rod 6 from moving off the loading plate 4.

[0029] Furthermore, a corresponding operation and display panel 8 is provided on the outside of the control box body, and the temperature control heating unit is controlled by the operation and display panel 8.

[0030] Furthermore, a protective part 12 is provided at the head end of the temperature control rod 6. The protective part 12 can be a soft rubber cap or a protective pad. This application does not limit this. It plays a contact protection role to avoid damage to the electronic components inside the control box.

[0031] Further, the heat generating section 601 is provided with an inner recess hole 602, and the temperature sensor 603 is arranged in the inner recess hole 602, and the hole wall and the hole bottom of the inner recess hole 602 are provided with a heat insulation layer 605, the heat insulation sheet 604 is arranged to block the heat transfer between the adjacent two heat generating sections 601, so as to avoid interfering with the temperature control heating action of the non-corresponding area, and the heat insulation layer 605 is arranged to prevent the heat emitted by the heat generating section 601 from directly acting on the temperature sensor 603, so as to ensure the temperature monitoring accuracy of the temperature sensor 603 on the corresponding area.

[0032] Further, the temperature control heating unit further comprises a first telescopic piece 7 for driving the loading plate 4 to move towards the control box body, the first telescopic piece 7 is an existing technology such as an electric telescopic rod or a telescopic cylinder, and the loading plate 4 is driven to move towards the control box body by the extension of the first telescopic piece 7; of course, a threaded rod can also be arranged in the mounting cavity 3, the threaded rod penetrates the loading plate 4 in a threaded cooperation manner, and a driving piece (such as a servo motor or a speed reducer) for driving the threaded rod to rotate is further arranged, and the loading plate 4 is driven to move by the rotation of the driving piece.

[0033] Please refer to Figure 4 、 Figures 6-8 In an embodiment of the present application, the temperature control heating unit further comprises a positioning assembly 9 for positioning the temperature control rod 6. The positioning assembly 9 comprises an air channel 901 arranged in the loading plate 4 and a gas control piece 906 for injecting gas into the air channel 901 or extracting gas from the air channel 901, at least one air cavity 902 in communication with the air channel 901 is arranged on the side of the through hole 5, a first sealing piston 903 is arranged in the air cavity 902, and a stand 904 for abutting against the temperature control rod 6 is arranged on the first sealing piston 903. The gas control piece 906 comprises a gas cylinder 9061 and a second sealing piston 9062 arranged in the gas cylinder 9061, the gas cylinder 9061 is in communication with the air channel 901 (communication through a gas guide hose, and a passing groove for moving the gas guide hose is arranged on one side of the mounting cavity 3), and a second telescopic piece 9063 is further arranged in the gas cylinder 9061, the movable end of the second telescopic piece 9063 is connected with the second sealing piston 9062, and preferably, the second telescopic piece 9063 is an electric telescopic rod.

[0034] In the embodiment, after the loading plate 4 is moved to the position of the control box body (i.e. the temperature control rod 6 is deeply positioned in the control box), the second sealing piston 9062 is moved to the bottom of the air cylinder 9061 by the contraction of the second telescopic member 9063, so as to fill the air into the air passage 901, the air flow entering the air passage 901 is branched into each air cavity 902, so as to move the corresponding first sealing piston 903 to the temperature control rod 6, until the vertical column 904 abuts against the temperature control rod 6, so as to realize the positioning of the temperature control rod 6; when the positioning of the temperature control rod 6 is needed to be removed, the second sealing piston 9062 is moved away from the bottom of the air cylinder 9061 by the elongation of the second telescopic member 9063, so as to exhaust the air from the air passage 901, under the action of negative pressure, the first sealing piston 903 in the air cavity 902 is moved away from the temperature control rod 6, so that the vertical column 904 does not abut against the temperature control rod 6.

[0035] Further, in the embodiment, the through hole 5 is further provided with a rubber ring 10 for extrusion contact with the temperature control rod 6, so as to provide a certain pre-tightening force to the temperature control rod 6; by arranging the rubber ring 10, the temperature control rod 6 is pre-tightened, so as to avoid the shaking of the temperature control rod 6 when it is not positioned, thereby causing the temperature control rod 6 to be unable to be deeply positioned in the control box; meanwhile, when the head end of the temperature control rod 6 contacts with an object, the temperature control rod 6 can move relative to the loading plate 4 by overcoming the pre-tightening force.

[0036] Further, in the embodiment, the air cavity 901 is further provided with a boss 905 for preventing the first sealing piston 903 from moving out.

[0037] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments which can be understood by those skilled in the art.

Claims

1. A temperature control heating unit for a fresh water preheater control box, characterized in that: The invention comprises an installation cavity (3) provided on the door of the control box and a loading plate (4) provided in the installation cavity (3) and capable of moving toward the control box body. A temperature control rod (6) is provided on the loading plate (4) in a lattice-shaped movable manner for regulating the internal temperature of the control box in a targeted manner. The temperature control rod (6) also movably passes through the door of the control box. The temperature control rod (6) is axially divided into a plurality of heating sections (601). An electric heating element is provided in the heating section (601). A temperature sensor (603) is also embedded in the heating section (601).

2. The temperature control heating unit of the fresh water preheater control box according to claim 1, characterized in that: The loading plate (4) is provided with a through hole (5) that corresponds to and matches the temperature control rod (6) in a one-to-one manner. The temperature control rod (6) movably passes through the loading plate (4) through the corresponding through hole (5), and a limiting member (11) is provided at the tail end of the temperature control rod (6).

3. The temperature control heating unit of the fresh water preheater control box according to claim 1, characterized in that: The head end of the temperature control rod (6) is provided with a protective piece (12).

4. The temperature control heating unit of the fresh water preheater control box according to claim 1, characterized in that: A heat insulating sheet (604) is provided between the ends of two adjacent heating sections (601), an inner concave hole (602) is provided on the heating section (601), the temperature sensor (603) is provided in the inner concave hole (602), and a heat insulating layer (605) is provided on the hole wall and the hole bottom of the inner concave hole (602).

5. The temperature control heating unit of the fresh water preheater control box according to claim 1, characterized in that: The temperature-controlled heating unit further comprises a plurality of first telescopic members (7) for driving the loading plate (4) to move toward the control box body.

6. The temperature control heating unit of the fresh water preheater control box according to claim 2, characterized in that: The temperature-controlled heating unit further comprises a positioning assembly (9) for positioning the temperature-controlled rod (6).

7. The temperature control heating unit of the fresh water preheater control box according to claim 6, characterized in that: The positioning assembly (9) includes an air channel (901) provided in the loading plate (4) and an air control component (906) for injecting air into or extracting air from the air channel (901). The through hole (5) is provided with at least one air cavity (902) in communication with the air channel (901). A first sealing piston (903) is provided in the air cavity (902). The first sealing piston (903) is provided with a column (904) for abutting against the temperature control rod (6).

8. The temperature control heating unit of the fresh water preheater control box according to claim 7, characterized in that: The air control component (906) comprises an air cylinder (9061) and a second sealing piston (9062) provided in the air cylinder (9061). The air cylinder (9061) is in communication with the air passage (901). A second telescopic component (9063) is further provided in the air cylinder (9061). The movable end of the second telescopic component (9063) is connected to the second sealing piston (9062).

9. The temperature control heating unit of the fresh water preheater control box according to claim 2, characterized in that: The through hole (5) is also provided with a rubber ring (10) for being in extrusion contact with the temperature control rod (6) to provide a certain pre-tightening force to the temperature control rod (6).

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