Accurate temperature control heat tracing control box

Abstract

The utility model discloses a kind of heat tracing control boxes of accurate temperature control, including heat tracing control box body, the front of heat tracing control box body is equipped with door body, and door body is respectively equipped with indicating lamp, operating button and display screen, the surface of heat tracing control box body is equipped with protection mechanism, and protection mechanism includes the support seat installed on door body, the side of support seat is equipped with limit seat, and support seat is covered with baffle.The heat tracing control box of accurate temperature control, handheld baffle, baffle is rotated with card seat as center, so that baffle is separated from limit seat, and is clamped in limit seat, so that baffle is covered on operating button, display screen, operating button can be prevented from being touched, the coverage of baffle can be directly physically isolated external contact, avoid this kind of unexpected operation from source, ensure that the temperature parameter that has been adjusted is continuously stable, guarantee that heat tracing system is normally operated according to process requirement.

Description

Technical Field

[0001] This utility model relates to the field of control boxes, specifically a heat tracing control box for precise temperature control. Background Technology

[0002] Electric heat tracing uses electric heat tracing equipment to convert electrical energy into heat energy. Through direct or indirect heat exchange, it replenishes the heat lost by the heat-traced equipment through the insulation material. Temperature control is used to track and control the temperature of the medium inside the heat-tracing equipment, keeping it at a reasonable and economical level. Electric heat tracing needs to be controlled by an electric heat tracing control box. The internal components of the electric heat tracing control box include voltage terminals, solid-state relays, temperature controllers, heat sinks, temperature sensors, and heat tracing cables.

[0003] Regarding patents related to electric heat tracing control boxes, a search revealed Chinese patent CN219698129U, which discloses an improved electric heat tracing control box. The document includes a box body and a door. An electrical component is fixedly connected to the upper interior of the box body, and a dustproof device is installed at the lower interior of the box body. A connecting device is installed on the right side of the dustproof device. The door can be opened to install a filter layer assembly between two first horizontal plates, with the left side of the filter layer assembly fitting against the inner wall of the box body opening.

[0004] While the aforementioned devices can improve the service life of electrical components in the electrical components section, in actual use, taking the YM-800 control box as an example, its exterior is equipped with various operating buttons, mainly including switches and operation buttons for setting its heat tracing stability. When operators or passersby pass by, tooling, tool bags, or body parts may accidentally scratch the main power switch, causing the entire heat tracing system to be shut down. In extremely cold weather, the medium in the pipelines or instruments may freeze or solidify rapidly, causing production process interruption or even damage to equipment and pipelines. Utility Model Content

[0005] The purpose of this invention is to provide a heat tracing control box with precise temperature control to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, a precise temperature control heat tracing control box is provided, comprising a heat tracing control box body, a door installed on the front of the heat tracing control box body, and indicator lights, operation buttons and a display screen respectively installed on the door. A protective mechanism is installed on the surface of the heat tracing control box body, and the protective mechanism includes a support seat installed on the door. A limit seat is installed on one side of the support seat, and a baffle is covered on the support seat. The baffle covers the outer surface of the operation buttons and the display screen respectively.

[0007] Furthermore, the protective mechanism also includes a fixing plate, a slot, and a seat. The bottom of both the support seat and the limiting seat are fixedly provided with fixing plates, and the fixing plates are screwed onto the door body.

[0008] Furthermore, the cross-section of the support base and the limiting base is U-shaped, and both the support base and the limiting base have slots inside, the width of which is greater than the thickness of the baffle.

[0009] Furthermore, both the support base and the limiting base have arc-shaped portions on their top inner sides, and the support base supports the baffle in the horizontal state, while the limiting base supports the baffle in the vertical state.

[0010] Furthermore, the baffle has an operation hole, which is rectangular and covers multiple sets of operation buttons. A viewing window is fixedly installed on the baffle and covers the display screen.

[0011] Furthermore, a docking piece is fixedly provided at the bottom of the baffle, and the docking piece is circular. A through hole is opened on the docking piece, and a retainer is inserted inside the docking piece. The retainer passes through the docking piece and is screwed into the inside of the docking seat.

[0012] Furthermore, the docking seat is fixed to the door body, and the baffle is movably connected to the door body through the docking plate, the card seat, and the docking seat, and the rotation angle of the baffle is 0-90 degrees.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: by holding the baffle plate and rotating it around the card holder as the center, the baffle plate is disengaged from the limiting seat and locked onto the limiting seat, so that the baffle plate covers the operation buttons and the display screen, which can prevent accidental touch of the operation buttons. The coverage of the baffle plate can directly and physically isolate external contact, avoid such unintended operations from the source, ensure the continuous stability of the adjusted temperature parameters, and ensure the normal operation of the heat tracing system according to the process requirements. Attached Figure Description

[0014] Figure 1 This is a front view schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the surface structure of the structural protection mechanism of this utility model;

[0016] Figure 3 This is a side view of the structural protection mechanism of this utility model;

[0017] Figure 4 This is a side view of the structural protection mechanism of this utility model;

[0018] Figure 5 This is a schematic diagram showing the operation hole detached from the operation button in this utility model.

[0019] The following numbers are labeled in the diagram: 100, Heat tracing control box body; 200, Door; 21, Indicator light; 22, Operation button; 23, Display screen; 300, Protective mechanism; 31, Support base; 311, Arc-shaped part; 32, Limiting seat; 33, Fixing plate; 34, Slot; 35, Baffle plate; 351, Operation hole; 352, Viewing window; 353, Connecting plate; 36, Card seat; 361, Connecting seat. Detailed Implementation

[0020] Please see Figure 1-5 This utility model provides a precise temperature control heat tracing control box, including a heat tracing control box body 100. A door 200 is installed on the front of the heat tracing control box body 100, and an indicator light 21, an operation button 22 and a display screen 23 are respectively installed on the door 200. A protective mechanism 300 is installed on the surface of the heat tracing control box body 100, and the protective mechanism 300 includes a support base 31 installed on the door 200. A limit seat 32 is installed on one side of the support base 31, and a baffle 35 is covered on the support base 31. The baffle 35 covers the outer surface of the operation button 22 and the display screen 23 respectively.

[0021] Working principle: When the heat tracing control box 100 is in use, after adjusting the temperature using the operation button 22 and the display screen 23, hold the baffle 35 and rotate the baffle 35 around the retainer 36. This causes the baffle 35 to detach from the limit seat 32 and engage with the limit seat 32, so that the baffle 35 covers the operation button 22 and the display screen 23. This can prevent accidental touch of the operation button 22 and protect the display screen 23.

[0022] Both the support base 31 and the limiting base 32 have an arc-shaped portion 311 on their top inner sides. The support base 31 supports the baffle 35 in the horizontal state, while the limiting base 32 supports the baffle 35 in the vertical state.

[0023] like Figure 3 As shown: When the hand-held baffle 35 rotates around the card holder 36, the edge of the baffle 35 will contact the inner top of the support base 31 and the limiting base 32. If it is a right-angle structure, it is easy to generate frictional resistance, and long-term use may scratch the edge of the baffle 35 or the inner side of the structure. However, the arc-shaped part 311 can transform hard friction into smooth contact through a smooth transition, which not only reduces the operating force and improves the ease of use, but also avoids scratching wear between parts, indirectly extending the service life of the support base 31, the limiting base 32 and the baffle 35, and reducing the frequency of maintenance and replacement.

[0024] In a preferred embodiment, the protective mechanism 300 also includes a fixing plate 33, a slot 34 and a seat 36. The bottom of the support seat 31 and the limiting seat 32 are both fixedly provided with fixing plates 33, and the fixing plates 33 are screwed onto the door body 200.

[0025] The cross-sections of the support base 31 and the limiting base 32 are U-shaped, and the interior of both the support base 31 and the limiting base 32 is provided with a slot 34, the width of which is greater than the thickness of the baffle 35.

[0026] Both the support base 31 and the limiting base 32 have an arc-shaped portion 311 on their top inner sides. The support base 31 supports the baffle 35 in the horizontal state, while the limiting base 32 supports the baffle 35 in the vertical state.

[0027] An operation hole 351 is provided on the baffle 35, and the operation hole 351 is rectangular. The operation hole 351 covers multiple sets of operation buttons 22. A window 352 is fixedly provided on the baffle 35, and the window 352 covers the display screen 23.

[0028] In a preferred embodiment, a docking piece 353 is fixedly provided at the bottom of the baffle 35. The docking piece 353 is circular, and a through hole is provided on the docking piece 353. A retainer 36 is inserted inside the docking piece 353, and the retainer 36 passes through the docking piece 353 and is screwed into the inside of the docking seat 361.

[0029] The docking seat 361 is fixedly connected to the door body 200, and the baffle 35 is movably connected to the door body 200 through the docking plate 353, the card seat 36, and the docking seat 361, and the rotation angle of the baffle 35 is 0-90 degrees.

[0030] like Figure 1-4 As shown: the baffle 35 rotates around the retaining seat 36 to disengage from the limiting seat 32 and then re-engages with the limiting seat 32, ultimately covering the operation button 22, effectively preventing accidental touches. After the heat tracing control box 100 is put into use, the operation button 22 has already completed temperature adjustment. If the operation button 22 is accidentally pressed due to personnel accidental touch, on-site vibration, or scratches from debris in the environment, it may cause the temperature setting value to become disordered, leading to abnormal operation of the heat tracing system. The coverage of the baffle 35 can directly and physically isolate external contact, avoiding such unexpected operations from the source, ensuring that the adjusted temperature parameters remain stable, and ensuring that the heat tracing system operates normally according to process requirements.

[0031] The design of the baffle 35 covering the display screen 23 provides comprehensive protection. It forms an effective barrier against industrial environments that the heat tracing control box 100 may face, such as workshop dust, moisture, minor liquid splashes, or tool collisions. On the one hand, it prevents dust from adhering to the surface of the display screen 23 and affecting the clarity of the readings, and avoids wear on the surface coating of the display screen 23 due to frequent cleaning. On the other hand, it prevents moisture and liquid from seeping into the internal circuitry of the display screen 23, reducing the risk of short circuit failures. It also avoids physical damage to the display screen 23 caused by accidental tool collisions, indirectly extending the service life of the display screen 23 and reducing the maintenance frequency and component replacement costs of the heat tracing control box 100.

[0032] The design, which rotates around the card holder 36, offers convenience and flexibility: compared to traditional fixed protective covers, the baffle 35 can be switched between protection and unlocking simply by rotating it by hand. When the temperature needs to be adjusted again, simply rotate the baffle 35 in the opposite direction to disengage it from the limit seat 32, thus exposing the operation buttons 22 and the display screen 23 for operation. No additional tools or complicated disassembly steps are required, making it suitable for the needs of rapid adjustment and frequent switching in industrial scenarios. At the same time, the fixing method of the baffle 35 to the limit seat 32 ensures that it will not shift due to vibration or shaking in the protective state, ensuring the stability of the protective effect and preventing the operation buttons 22 or the display screen 23 from being exposed to risks due to the baffle 35 becoming loose.

[0033] The existing heat tracing control box achieves precise temperature control through a closed-loop control logic of real-time data acquisition, intelligent computation, and precise execution. High-precision temperature sensors such as platinum resistance thermometers and thermocouples capture the actual temperature of the heat tracing pipe, equipment surface, or internal medium in real time and transmit the temperature signal to the core controller. The controller has a built-in preset target temperature threshold and uses intelligent control algorithms such as PID to dynamically compare the deviation between the actual temperature and the target temperature, calculating the optimal adjustment parameters. The adjustment command is then sent to actuators such as solid-state relays, thyristors, or contactors to precisely control the power supply of the heat tracing elements, preventing temperature overshoot or lag. Simultaneously, some control boxes also integrate an ambient temperature compensation module (to offset external temperature fluctuations), anti-electromagnetic interference circuits, and over-temperature protection and overload alarm functions, ultimately achieving high-precision and stable temperature control of the heat-traced object from ±0.5℃ to ±2℃.

Claims

1. A precise temperature-controlled heat tracing control box, comprising a heat tracing control box body (100), wherein a door (200) is installed on the front of the heat tracing control box body (100), and an indicator light (21), an operation button (22), and a display screen (23) are respectively installed on the door (200), characterized in that: The surface of the heat tracing control box body (100) is equipped with a protective mechanism (300), and the protective mechanism (300) includes a support seat (31) installed on the door (200), a limit seat (32) is installed on one side of the support seat (31), and a baffle (35) is covered on the support seat (31), and the baffle (35) covers the outer surface of the operation button (22) and the display screen (23) respectively; The protective mechanism (300) also includes a fixing plate (33), a slot (34) and a seat (36). The bottom of the support base (31) and the limiting base (32) are both fixedly provided with fixing plates (33), and the fixing plates (33) are screwed onto the door body (200). The cross-section of the support base (31) and the limiting base (32) is "U" shaped, and the inside of the support base (31) and the limiting base (32) is provided with a slot (34). The width of the slot (34) is greater than the thickness of the baffle (35).

2. The precise temperature control heat tracing control box according to claim 1, characterized in that: Both the support base (31) and the limiting base (32) have an arc-shaped part (311) on their top inner sides. The support base (31) supports the baffle (35) in the horizontal state, while the limiting base (32) supports the baffle (35) in the vertical state.

3. The precise temperature control heat tracing control box according to claim 2, characterized in that: The baffle (35) has an operation hole (351) and the operation hole (351) is rectangular. The operation hole (351) covers multiple sets of operation buttons (22). The baffle (35) has a fixed window (352) and the window (352) covers the display screen (23).

4. The precise temperature control heat tracing control box according to claim 3, characterized in that: The bottom of the baffle (35) is fixedly provided with a docking piece (353), and the docking piece (353) is circular. A through hole is opened on the docking piece (353), and a card seat (36) is inserted inside the docking piece (353). The card seat (36) passes through the docking piece (353) and is screwed into the docking seat (361).

5. The precise temperature control heat tracing control box according to claim 4, characterized in that: The docking seat (361) is fixedly connected to the door body (200), and the baffle (35) is movably connected to the door body (200) through the docking plate (353), the card seat (36), and the docking seat (361), and the rotation angle of the baffle (35) is 0-90 degrees.

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