A high-temperature-resistant probe shell for equipment temperature monitoring

Abstract

The utility model relates to industrial temperature monitoring equipment technical field, concretely relates to a kind of high-temperature-resistant probe shell for equipment temperature monitoring.The utility model provides a kind of high-temperature-resistant probe shell for equipment temperature monitoring, including shell, shell front end is temperature measurement part, rear end is connecting part, the shell adopts layered composite structure, including the ceramic insulating layer of inner layer, the metal heat conduction layer of middle layer and the high-temperature-resistant alloy protective layer of outer layer;The temperature measurement part is equipped with taper tapering structure, its outer surface is provided with multiple spiral flow guide column, and temperature measurement part is the plugging sealing structure;The connecting part is fixed using the way of screw thread connection, its tail portion is equipped with internal thread, and tail portion side is equipped with positioning groove.Inner layer ceramic insulating layer effectively isolates current, avoids signal interference;Middle layer metal heat conduction layer increases heat exchange area through radiating fin, significantly improves heat conduction efficiency;Outer layer high-temperature-resistant alloy protective layer combines nano alumina coating, and corrosion resistance is excellent.

Description

Technical Field

[0001] This utility model relates to the field of industrial temperature monitoring equipment technology, specifically to a high-temperature resistant probe housing for equipment temperature monitoring. Background Technology

[0002] The housing of a high-temperature resistant probe for equipment temperature monitoring is a key component of an industrial temperature monitoring system. It is mainly used to encapsulate the temperature sensor and protect it from high temperatures, corrosive media, and mechanical damage. At the same time, it must ensure the thermal conductivity between the sensor and the object being measured. It is an important interface connecting the sensor and the device being measured.

[0003] In existing technologies, temperature monitoring probe housings often employ simple bracket structures or are simply exposed, resulting in the following prominent problems: First, insufficient protection; under high-temperature environments, they are prone to deformation due to thermal stress or corrosion by corrosive media, leading to internal sensor failure. Second, low thermal conductivity; they cannot quickly transmit the temperature signal sensed by the sensor to external monitoring equipment, affecting real-time monitoring. Third, insufficient structural strength; during installation or use, they are prone to cracking due to vibration and impact, shortening their service life. Therefore, there is an urgent need for a probe housing structure that combines high temperature resistance, good thermal conductivity, and strong protection. Utility Model Content

[0004] The purpose of this invention is to provide a high-temperature resistant probe housing for equipment temperature monitoring. Through a layered composite structure design and functionalized surface treatment, it solves the problems of insufficient protection, low thermal conductivity and weak structural strength in the prior art.

[0005] The technical solution provided by this utility model is a high-temperature resistant probe housing for equipment temperature monitoring, including a housing, a temperature measuring part at the front end of the housing, and a connecting part at the rear end. The housing adopts a layered composite structure, including an inner ceramic insulating layer, a middle metal heat-conducting layer, and an outer high-temperature resistant alloy protective layer. The temperature measuring part has a tapered tapered structure, and its outer surface is provided with multiple spiral guide columns. The temperature measuring part is also a sealing structure. The connecting part is fixed by a threaded connection, and its tail is provided with an internal thread and a positioning groove on one side of the tail.

[0006] As a preferred technical solution of this utility model, the spiral angle of the spiral guide column is 30°-45°, the height of the spiral guide column is 1 / 4-1 / 3 of the high temperature resistant alloy protective layer, and gradually decreases along the direction of the tapered tapered structure, and the distance between adjacent spiral guide columns is 1 / 5-1 / 3 of the shell diameter.

[0007] As a preferred embodiment of this invention, the metal heat-conducting layer is composed of multiple radially arranged heat dissipation fins.

[0008] As a preferred embodiment of this utility model, the metal heat-conducting layer is provided with a sealing plate at the rear end of the heat dissipation fins.

[0009] As a preferred technical solution of this utility model, the inner surface of the ceramic insulating layer is provided with protruding axial reinforcing ribs, and the height of the reinforcing ribs is 1 / 3-1 / 2 of the layer thickness.

[0010] As a preferred embodiment of this invention, the outer surface of the high-temperature resistant alloy protective layer is coated with a nano-alumina coating with a thickness of 50-200μm.

[0011] As a preferred embodiment of this utility model, the cone angle of the tapered tapered structure is 15°-25°, and its end matches the outer diameter of the connecting part.

[0012] The advantages of this utility model compared with the prior art are as follows: 1. Multi-layer composite structure enhances overall performance: The inner ceramic insulation layer effectively isolates current and avoids signal interference; the middle metal heat-conducting layer increases the heat exchange area through heat dissipation fins, and the spiral flow guide column guides fluid disturbance, significantly improving heat conduction efficiency; the outer high-temperature resistant alloy protective layer combined with nano-alumina coating can withstand temperatures up to 1200℃ and has excellent corrosion resistance, extending the service life of the shell.

[0013] 2. Functional surface design optimizes fluid heat transfer: The tapered tapered structure of the temperature measuring section, combined with the spiral guide column (spiral angle 30°-45°, height 1 / 4-1 / 3 of the protective layer), can guide the measured medium to form a swirling flow, enhance boundary layer disturbance, reduce thermal resistance, and shorten the temperature response time by 30%-50%.

[0014] 3. Enhanced reliability through structural reinforcement design: Axial reinforcing ribs (1 / 3-1 / 2 the height of the layer thickness) within the ceramic insulation layer effectively resist crack propagation caused by thermal stress, and the temperature monitoring probe is fixed in place by the inner side of the reinforcing ribs; the threaded fit and positioning groove design of the connection ensures installation positioning accuracy and avoids loosening and falling off due to vibration. Attached Figure Description

[0015] Figure 1 This is a structural diagram of the temperature measuring part of the housing of a high-temperature resistant probe for equipment temperature monitoring according to this utility model.

[0016] Figure 2 This is a structural diagram of the connection part of the housing of a high-temperature resistant probe for temperature monitoring in this device.

[0017] Figure 3 This is a cross-sectional three-dimensional structural diagram of the housing of a high-temperature resistant probe for temperature monitoring in this device.

[0018] Figure 4This is a structural diagram of the ceramic insulation layer and the metal heat-conducting layer of the shell of a high-temperature resistant probe for temperature monitoring in this device.

[0019] As shown in the figure: 1. Shell; 2. Temperature measuring part; 3. Connecting part; 4. Ceramic insulation layer; 5. Metal heat-conducting layer; 6. High-temperature resistant alloy protective layer; 7. Tapered tapered structure; 8. Spiral guide column; 9. Internal thread; 10. Positioning groove; 11. Heat dissipation fins; 12. Sealing plate; 13. Axial reinforcing rib. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" 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 a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Example 1

[0022] As per the instruction manual Figure 1-3 As shown, a high-temperature resistant probe housing for equipment temperature monitoring includes a housing 1, a temperature measuring part 2 at the front end of the housing 1 and a connecting part 3 at the rear end. The housing 1 adopts a layered composite structure, including an inner ceramic insulating layer 4, a middle metal heat-conducting layer 5 and an outer high-temperature resistant alloy protective layer 6.

[0023] In this utility model, the temperature measuring part 2 is provided with a tapered tapered structure 7, the tapered angle of which is 20°, and its end is matched with the outer diameter of the connecting part 3. Multiple spiral guide columns 8 are provided on the outer surface of the temperature measuring part 2, and the temperature measuring part 2 is a sealing structure. The spiral angle of the spiral guide column 8 is 30°-45°, the height of the spiral guide column 8 is 1 / 3 of the high temperature resistant alloy protective layer 6, and gradually decreases along the direction of the tapered tapered structure 7. The spacing between adjacent spiral guide columns 8 is 1 / 3 of the diameter of the shell 1.

[0024] In this utility model, the inner surface of the ceramic insulating layer 4 is provided with protruding axial reinforcing ribs 13. The height of the reinforcing ribs is 1 / 2 of the layer thickness, which effectively resists the crack propagation caused by thermal stress, and the temperature monitoring probe position is fixed by the inner side of the reinforcing ribs.

[0025] In this invention, the outer surface of the high-temperature resistant alloy protective layer 6 is coated with a nano-alumina coating with a thickness of 50-200μm, which can effectively resist high-temperature oxidation, corrosive media erosion and mechanical impact, and avoid damage to the internal structure.

[0026] In this utility model, the connecting part 3 is fixed by a threaded connection, and its tail is provided with an internal thread 9, and a positioning groove 10 is provided on one side of the tail.

[0027] As per the instruction manual Figure 4 As shown, the metal heat-conducting layer 5 is composed of multiple radially arranged heat dissipation fins 11, and a sealing plate 12 is provided at the rear end of the heat dissipation fins 11.

[0028] Working principle When the probe contacts the high-temperature device being measured, the tapered tapered structure 7 of the temperature measuring section 2 guides the measured medium (such as gas or liquid) to flow along the swirling path formed by the spiral guide column 8. The fluid makes full contact with the high-temperature resistant alloy protective layer 6, and then transfers the heat to the metal heat-conducting layer 5 through thermal conduction. The metal heat-conducting layer 5 quickly transfers the heat to the inner ceramic insulating layer 4, and then through the ceramic insulating layer 4 to the encapsulated temperature sensor (such as a thermocouple or resistance temperature detector), thus realizing the acquisition of temperature signals.

[0029] The outer high-temperature alloy protective layer 6 and nano-alumina coating can effectively resist high-temperature oxidation, corrosive media erosion and mechanical impact, and avoid damage to the internal structure; the axial reinforcing ribs 13 of the ceramic insulation layer 4 constrain the distribution of thermal stress, prevent the ceramic layer from cracking due to sudden temperature changes, and position the internal temperature probe; the threaded positioning groove 10 of the connecting part 3 ensures a stable connection between the probe and external equipment (such as the monitoring host) and avoids loosening and falling off due to vibration.

[0030] The present invention and its embodiments have been described above. This description is not restrictive, and the specific embodiments shown are only one of the embodiments of the present invention. The actual structure is not limited to this. In short, if a person skilled in the art is inspired by this description and designs a similar structure and embodiment without departing from the inventive spirit of the present invention, such design should fall within the protection scope of the present invention.

Claims

1. A high-temperature resistant probe housing for equipment temperature monitoring, comprising a housing (1), a temperature measuring part (2) at the front end of the housing (1), and a connecting part (3) at the rear end, characterized in that: The shell (1) adopts a layered composite structure, including an inner ceramic insulating layer (4), a middle metal heat-conducting layer (5), and an outer high-temperature resistant alloy protective layer (6). The temperature measuring part (2) is provided with a tapered tapered structure (7), and its outer surface is provided with multiple spiral guide columns (8). The temperature measuring part (2) is a sealing structure. The connecting part (3) is fixed by a threaded connection, and its tail is provided with an internal thread (9) and a positioning groove (10) is provided on one side of the tail.

2. The high-temperature resistant probe housing for equipment temperature monitoring according to claim 1, characterized in that: The spiral angle of the spiral guide column (8) is 30°-45°. The height of the spiral guide column (8) is 1 / 4-1 / 3 of the high temperature resistant alloy protective layer (6) and gradually decreases along the direction of the tapered tapered structure (7). The distance between adjacent spiral guide columns (8) is 1 / 5-1 / 3 of the diameter of the shell (1).

3. The high-temperature resistant probe housing for equipment temperature monitoring according to claim 1, characterized in that: The metal heat-conducting layer (5) is composed of multiple radially arranged heat dissipation fins (11).

4. The high-temperature resistant probe housing for equipment temperature monitoring according to claim 1, characterized in that: The metal heat-conducting layer (5) has a sealing plate (12) at the rear end of the heat dissipation fins (11).

5. The high-temperature resistant probe housing for equipment temperature monitoring according to claim 1, characterized in that: The inner surface of the ceramic insulating layer (4) is provided with protruding axial reinforcing ribs (13), the height of which is 1 / 3 to 1 / 2 of the layer thickness.

6. The high-temperature resistant probe housing for equipment temperature monitoring according to claim 1, characterized in that: The outer surface of the high-temperature resistant alloy protective layer (6) is coated with a nano-alumina coating with a thickness of 50-200μm.

7. The high-temperature resistant probe housing for equipment temperature monitoring according to claim 1, characterized in that: The tapered tapered structure (7) has a cone angle of 15°-25°, and its end matches the outer diameter of the connecting part (3).

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