Heat dissipation type high-temperature melt pressure sensor

Abstract

The utility model provides a heat dissipation type high-temperature melt pressure sensor, which relates to the technical field of pressure transmitters and comprises a sensor shell and a pressure measuring element. The pressure measuring element is arranged in the sensor shell in a penetrating manner; the sensor shell comprises a first heat dissipation piece, a first transition piece, a second heat dissipation piece, a fixing piece, a second transition piece and a contact piece; one end of the pressure measuring element is fixed through the first heat dissipation piece, the first heat dissipation assembly is further connected with the first transition piece, the first transition piece is connected with the second heat dissipation piece, the second transition piece is fixed with the second heat dissipation piece through the fixing piece, and the second heat dissipation piece is connected with the contact piece. The high-temperature pressure sensor has good stability and high-precision measurement capability in a high-temperature environment, and meets the requirement on pressure measurement in a high-temperature industrial production process.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure transmitters, in particular to a heat dissipation type high-temperature melt pressure sensor. Background Art

[0002] In high-temperature industrial production, such as steel smelting, glass manufacturing, ceramic firing and other fields, melt pressure status monitoring is crucial. The core processes of these industries often involve high-temperature smelting processes, in which the melt pressure not only directly affects the smooth operation of the production process, but also the quality and performance of the final product. Therefore, whether the melt pressure can be accurately measured and controlled has become an indispensable factor in ensuring efficient and safe production.

[0003] However, the special properties of high-temperature melts pose great challenges to pressure measurement. First, these melts are often highly corrosive and can quickly erode traditional pressure sensor materials, causing sensor failure. Second, the high thermal radiation generated by high-temperature melts poses a serious threat to the stability and accuracy of the sensor. In such an extreme environment, it is difficult for traditional pressure sensors to maintain their original performance, and measurement errors and even equipment damage are prone to occur, which not only affects the continuity and stability of the production process, but may also cause safety accidents.

[0004] Therefore, a heat dissipation type high temperature melt pressure sensor is proposed. Utility Model Content

[0005] This specification provides a heat dissipation type high-temperature melt pressure sensor, which has good stability and high-precision measurement capabilities in high-temperature environments, meeting the needs for pressure measurement in high-temperature industrial production processes.

[0006] This specification provides a heat dissipation type high temperature melt pressure sensor, comprising: a sensor housing, a pressure measuring element; a cooling channel is formed in the sensor housing; the pressure measuring element is arranged in the cooling channel of the sensor housing;

[0007] The sensor housing includes a first heat sink, a first transition piece, a second heat sink, a fixing piece, a second transition piece, and a contact piece; one end of the pressure measuring element is fixed by the first heat sink, the first heat sink assembly is also connected to the first transition piece, the first transition piece is connected to the second heat sink, the second transition piece is fixed to the second heat sink by the fixing piece, and the second heat sink is connected to the contact piece.

[0008] Optionally, the sensor housing includes a Hastelloy housing or a nickel-based alloy housing.

[0009] Optionally, the surface of the sensor housing is provided with a ceramic coating.

[0010] Optionally, the fixing member includes a detachable flange and bolts.

[0011] Optionally, the first heat sink includes a copper heat sink or an aluminum heat sink.

[0012] Optionally, the pressure measuring element includes a first seal, an electrical connector, a circuit board, a mounting member, a contact sheet, an isolation block, a diaphragm, a second seal, a strain gauge sensor, a metal elastomer, a mounting seat, and a cable;

[0013] The first sealing member is in contact with the electrical connector, the electrical connector is fixed to the first heat sink, the circuit board is fixed between the electrical connector and the contact piece through the mounting member, one end of the isolation block is fixed to a side of the contact piece away from the circuit board, and the other side of the isolation block is fixed to the diaphragm so as to separate the contact piece from the diaphragm; one end of the strain gauge sensor is fixedly connected to the second sealing member, the other end of the strain gauge sensor is connected to the metal elastomer, the metal elastomer is connected to the mounting seat, the mounting seat is fixed to the second heat sink, and the mounting seat is also connected to the cable.

[0014] Optionally, the first seal comprises a mechanical seal.

[0015] Optionally, the second seal is a chemical seal.

[0016] The utility model has good stability and high-precision measurement capability in a high-temperature environment, meeting the demand for pressure measurement in a high-temperature industrial production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 A schematic diagram of the appearance structure of a heat dissipation type high temperature melt pressure sensor provided in an embodiment of this specification;

[0019] Figure 2 A schematic diagram of the internal structure of a heat dissipation type high temperature melt pressure sensor provided in an embodiment of this specification;

[0020] Figure 3 Another schematic diagram of the internal structure of a heat dissipation type high temperature melt pressure sensor provided in an embodiment of this specification;

[0021] Figure 4 A schematic diagram of the working principle of a heat dissipation type high-temperature melt pressure sensor provided in an embodiment of this specification.

[0022] The accompanying drawings illustrate: 1. electrical connector; 2. first heat sink; 3. first transition piece; 4. second heat sink; 5. fixing piece; 6. second transition piece; 7. contact piece; 8. first sealing piece; 9. circuit board; 10. mounting piece; 11. contact piece; 12. isolation block; 13. diaphragm; 14. second sealing piece; 15. strain gauge sensor; 16. metal elastomer; 17. mounting seat; 18. cable; 19. spring. DETAILED DESCRIPTION

[0023] The following description is used to disclose the utility model so that those skilled in the art can implement the utility model. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the utility model defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the utility model.

[0024] The following is combined with Figure 1-4 The exemplary embodiments of the present invention are described more fully. However, the exemplary embodiments can be implemented in various forms, and it should not be understood that the present invention is limited to the embodiments set forth herein. On the contrary, providing these exemplary embodiments can make the present invention more comprehensive and complete, and it is more convenient to fully convey the concept of the utility model to those skilled in the art. The same reference numerals in the figures represent the same or similar elements, components or parts, and thus their repeated description will be omitted.

[0025] Under the premise of conforming to the technical concept of the present invention, the features, structures, characteristics or other details described in a specific embodiment do not exclude that they can be combined in one or more other embodiments in a suitable manner.

[0026] In the description of specific embodiments, the features, structures, characteristics or other details described in the present invention are intended to enable those skilled in the art to fully understand the embodiments. However, it does not exclude that those skilled in the art can practice the technical solution of the present invention without one or more of the specific features, structures, characteristics or other details.

[0027] The term "and / or" or "and / or" includes all combinations of any one or more of the associated listed items.

[0028] like Figure 1 As shown, this specification provides a heat dissipation type high temperature melt pressure sensor, including:

[0029] Sensor housing, pressure measuring element; the sensor housing includes Hastelloy housing and nickel-based alloy housing. Hastelloy has good physical properties and has excellent performance in corrosion resistance and thermal stability; it has strong anti-oxidation and corrosion resistance. Nickel-based alloys have good strength and anti-oxidation and corrosion resistance at high temperatures. The surface of the sensor housing is provided with a ceramic coating. By utilizing the high hardness, corrosion resistance, insulation performance and high temperature stability of the ceramic coating, the sensor housing can be protected from damage by the external environment and its working performance in complex environments can be improved. It is worth noting that the pressure measuring element takes into account the matching of the thermal expansion coefficient to ensure that it will not fail due to thermal stress when the temperature changes. A cooling channel is formed in the sensor housing, which is used to improve the heat dissipation efficiency and ensure that the pressure measuring element can work normally in a high temperature environment. The pressure measuring element is arranged in the cooling channel of the sensor housing so that the air flow or coolant in the channel can be directly used to dissipate heat.

[0030] The sensor housing includes a first heat sink 2, a first transition piece 3, a second heat sink 4, a fixing piece 5, a second transition piece 6, and a contact piece 7; one end of the pressure measuring element is fixed by the first heat sink 2, and the first heat sink 2 includes a copper heat sink and an aluminum heat sink, which can effectively conduct the heat generated inside to the outside. The first heat sink assembly is also connected to the first transition piece 3, the first transition piece 3 is connected to the second heat sink 4, and the second transition piece 6 is fixed to the second heat sink 4 by the fixing piece 5, so as to ensure the stability and reliability of the whole structure. The fixing piece 5 includes a detachable flange and a bolt, which together ensure the stability of the internal components of the sensor housing and the reliability of the external connection. The detachable flange design allows the sensor to be easily disassembled and reinstalled when necessary, which is convenient for maintenance and replacement; and the bolts tightly connect the flange and other components together through the fixing action, ensuring the stability and reliability of the connection, improving the availability and flexibility of the sensor, and reducing the maintenance cost and time. The second heat sink 4 is connected to the contact piece 7, and the first transition piece 3 and the second transition piece 6 are used to connect the heat sink to ensure that the heat can be smoothly transferred from the pressure measuring element to the heat sink.

[0031] like Figure 2As shown, the pressure measuring element includes a first seal 8, an electrical connector 1, a circuit board 9, a mounting member 10, a contact sheet 11, an isolation block 12, a diaphragm 13, a second seal 14, a strain gauge sensor 15, a metal elastic body 16, a mounting seat 17, and a cable 18; the first seal 8 abuts against the electrical connector 1 to ensure the stability and sealing of the electrical connector 1, and the first seal 8 includes a mechanical seal, which is realized by a precisely machined metal gasket and an elastic material. The electrical connector 1 is fixed to the first heat sink 2, the circuit board 9 is fixed between the electrical connector 1 and the contact sheet 11 through the mounting member 10, one end of the isolation block 12 is fixed to the side of the contact sheet 11 away from the circuit board 9, and the other side of the isolation block 12 is fixed to the diaphragm 13, so as to separate the contact sheet 11 from the diaphragm 13; one end of the strain gauge sensor 15 is fixedly connected to the second seal 14, and the second seal 14 is a chemical seal, that is, a ceramic material or a special alloy material such as Hastelloy that is resistant to high temperature and corrosion is used. The other end of the strain gauge sensor 15 is connected to the metal elastic body 16, the metal elastic body 16 is connected to the mounting seat 17, the mounting seat 17 is fixed to the second heat sink 4, and the mounting seat 17 is also connected to the cable 18. The cable 18 can be a silicone rubber cable, which can work normally in the temperature range of -60°C to +200°C, has good electrical insulation performance, can operate stably under high voltage, and has excellent aging resistance, has good resistance to acids, alkalis and corrosive gases, can be used in a long-term humid environment, and ensures long-term reliability; at the same time, its structure is soft, the bending performance is excellent, and the minimum bending radius can reach 16 times the outer diameter of the cable 18, which makes it easy to install and lay.

[0032] Of course, the first seal 8 and the second seal 14 also take into account the influence of thermal expansion, and ensure that the sealing performance is not affected when the temperature changes by using expandable materials and reserving appropriate gaps. In addition, the sensor also includes a detection mechanism to monitor the sealing status in real time and issue an alarm immediately if a leak occurs.

[0033] The heat dissipation type high temperature melt pressure sensor also takes into account the requirements of explosion-proof and waterproof, and ensures stability and safety in harsh environments by using protective materials and structural designs that meet relevant standards. In addition, the heat dissipation type high temperature melt pressure sensor also includes overload protection and short circuit protection functions to prevent equipment damage caused by abnormal conditions.

[0034] like Figure 3As shown, one end of the spring 19 is fixedly connected to the first heat sink 2, the other end of the spring 19 is fixedly connected to the mounting seat 17, and the pressure measuring element is sleeved in the spring 19. Spring 19 One end of the spring 19 is fixedly connected to the first heat sink 2, and the other end is fixedly connected to the mounting seat 17. Such a design can provide structural support for the entire device. The elastic properties of the spring 19 itself enable it to withstand forces and vibrations from different directions, thereby maintaining the stability and reliability of the device. When the device is vibrated or impacted, the spring 19 can effectively absorb and buffer these forces to prevent them from directly acting on sensitive components such as the pressure measuring element. This can reduce the risk of measurement errors and component damage caused by vibration. The spring 19 can also serve as a force transmission path to uniformly transmit the force or stress from the external environment to other parts of the device. This is very important for ensuring the uniformity and stability of the device when it is under force. The pressure measuring element is a very critical component in the device, and it needs to be accurate and reliable. By sleeved in the spring 19, the pressure measuring element can be effectively protected from external shocks, vibrations or improper installation. The elasticity of the spring 19 can buffer these potential damaging factors and ensure that the pressure measuring element can work in a stable environment.

[0035] The working principle of the heat dissipation type high temperature melt pressure sensor: Figure 4 As shown, the contact piece contacts the high-temperature melt to generate pressure, and the pressure acts on the metal elastomer, causing the strain gauge sensor connected to the metal elastomer to deform and change its resistance. The circuit board receives the resistance change of the strain gauge sensor, generates an electrical signal, and transmits the electrical signal to the external device.

[0036] The utility model has good stability and high-precision measurement capability in a high-temperature environment, meeting the demand for pressure measurement in a high-temperature industrial production process.

[0037] The specific embodiments described above further describe the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the utility model is not inherently related to any specific computer, virtual device or electronic device, and various general devices can also implement the utility model. The above description is only a specific embodiment of the utility model and is not intended to limit the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model shall be included in the protection scope of the utility model.

[0038] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0039] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A heat dissipation type high temperature melt pressure sensor, characterized in that: include: A sensor housing and a pressure measuring element; a cooling channel is formed in the sensor housing; the pressure measuring element is inserted into the cooling channel of the sensor housing; The sensor housing comprises a first heat sink (2), a first transition piece (3), a second heat sink (4), a fixing piece (5), a second transition piece (6), and a contact piece (7); one end of the pressure measuring element is fixed by the first heat sink (2), the first heat sink is also connected to the first transition piece (3), the first transition piece (3) is connected to the second heat sink (4), the second transition piece (6) is fixed to the second heat sink (4) by the fixing piece (5), and the second heat sink (4) is connected to the contact piece (7).

2. The heat dissipation type high temperature melt pressure sensor according to claim 1, characterized in that: The sensor housing comprises a Hastelloy housing and a nickel-based alloy housing.

3. The heat dissipation type high temperature melt pressure sensor according to claim 2, characterized in that: The surface of the sensor housing is provided with a ceramic coating.

4. The heat dissipation type high temperature melt pressure sensor according to claim 3, characterized in that: The fixing member (5) comprises a detachable flange and bolts.

5. The heat dissipation type high temperature melt pressure sensor according to claim 4, characterized in that: The first heat sink (2) comprises a copper heat sink and an aluminum heat sink.

6. The heat dissipation type high temperature melt pressure sensor according to claim 5, characterized in that: The pressure measuring element comprises a first sealing member (8), an electrical connector (1), a circuit board (9), a mounting member (10), a contact sheet (11), an isolation block (12), a diaphragm (13), a second sealing member (14), a strain gauge sensor (15), a metal elastic body (16), a mounting seat (17), and a cable (18); The first sealing member (8) is in contact with the electrical connector (1), the electrical connector (1) is fixed to the first heat sink (2), the circuit board (9) is fixed between the electrical connector (1) and the contact sheet (11) through the mounting member (10), one end of the isolation block (12) is fixed to a side of the contact sheet (11) away from the circuit board (9), and the other side of the isolation block (12) is fixed to the diaphragm (13) so as to separate the contact sheet (11) from the diaphragm (13); one end of the strain gauge sensor (15) is fixedly connected to the second sealing member (14), the other end of the strain gauge sensor (15) is connected to the metal elastic body (16), the metal elastic body (16) is connected to the mounting seat (17), the mounting seat (17) is fixed to the second heat sink (4), and the mounting seat (17) is also connected to the cable (18).

7. The heat dissipation type high temperature melt pressure sensor according to claim 6, characterized in that: The first seal (8) comprises a mechanical seal.

8. The heat dissipation type high temperature melt pressure sensor according to claim 7, characterized in that: The second seal (14) is a chemical seal.

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