Fixing device for temperature measuring cable in fixed bed reactor

Abstract

The utility model relates to the field of fixation of a temperature measuring cable in a fixed bed reactor, in particular to a fixing device for the temperature measuring cable in the fixed bed reactor. The fixing device comprises a plurality of auxiliary supporting mechanisms (4), the auxiliary supporting mechanisms (4) comprise fixing pipes (401), fastening bolt holes (405) are formed in the fixing pipes (401), and a plurality of supporting legs (404) extend outwards from the fixing pipes (401). The temperature measuring cable fixing device is composed of a fixing pipe, a fastening bolt and a supporting leg, the fixing pipe can be sleeved on a temperature measuring cable and then is tightened through the fastening bolt, the device is fixed on the temperature measuring cable, the diameter of the supporting leg is slightly smaller than that of a tube nest, and the temperature measuring cable can be fixed in the middle of the tube nest while the tube nest can be placed in the supporting leg. And the effect of detecting the middle temperature of the tube nest is achieved. And after use, the temperature is relatively uniform and accurate, and a more accurate reference value is provided for production adjustment.

Description

Technical Field

[0001] The utility model relates to the field of fixing temperature measuring cables in fixed bed reactors, in particular to a fixing device for temperature measuring cables in fixed bed reactors. Background Art

[0002] When using a fixed bed for production, it is necessary to measure the temperature of the catalyst in the fixed bed. Since the catalyst is solid and has inherent thermal conductivity deviations, and the tubes are relatively long, the temperature measuring cable probe inserted into the tubes is likely to deviate from the wall, resulting in the temperature measured by the temperature measuring cable not accurately displaying the actual temperature at the center of the tubes. In particular, multi-node temperature measuring cables are likely to deviate from the wall if not fixed at different heights. At the same time, if the temperature measuring cable is fixed with a fixing plate, it will affect the loading of the catalyst and the distribution of the subsequent reaction system. Therefore, a device is needed that can fix the position of the reaction hotspot without affecting the loading of the catalyst.

[0003] On August 30, 2024, a search was conducted in the China Patent Publication Database using "fixed bed and temperature and fixed and support and tubing" as the abstract keywords, with synonym expansion selected, and the following results were found:

[0004] CN215464287U A tubular fixed bed reaction for dehydrogenation of light alkanes;

[0005] CN210410644U A fixed-bed tubular reactor for benzene gas-phase hydrogenation;

[0006] CN205613395U is a detachable finned tube fixed bed reactor. These cases are not related to this patent.

[0007] On August 30, 2024, an abstract search for "fixed bed and temperature and fixation and support and bolt" was conducted on China National Knowledge Infrastructure, and no relevant literature was found.

[0008] It is completely different from the conception of this patent.

[0009] Among them, the defects of these technologies are that the temperature measuring cable probe is easy to run away from the wall in the tube, resulting in the temperature measured by the temperature measuring cable not accurately showing the actual temperature of the center of the tube. In particular, multi-node temperature measuring cables are easy to run away from the wall if they are not fixed at different heights. Utility Model Content

[0010] Purpose of the utility model: To provide a better fixing device for the temperature measuring cable in a fixed bed reactor. The specific purpose can be seen in the multiple substantial technical effects in the specific implementation part.

[0011] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0012] A fixing device for a temperature measuring cable in a fixed bed reactor is characterized in that the fixing device includes multiple auxiliary support mechanisms 4, and the multiple auxiliary support mechanisms 4 include a fixing tube 401, on which fastening bolt holes 405 are arranged, and multiple support legs 404 also extend outward from the fixing tube 401.

[0013] A further technical solution of the present invention is that the supporting legs 404 include three.

[0014] A further technical solution of the present invention is that the support legs 404 can support the inner wall of the tube array 2 of the fixed bed reactor.

[0015] A further technical solution of the present invention is that the temperature cable 3 can pass through the interior of the fixed tube 401 .

[0016] A further technical solution of the present invention is that the temperature cable 3 is fixed after the fastening bolt 403 is inserted into the fastening bolt hole 405 .

[0017] A further technical solution of the present invention is that the whole formed by the fixed tube 401 and the support legs 404 is slightly smaller than the inner diameter of the tube array 2 of the fixed bed reactor.

[0018] A further technical solution of the present invention is that an outer ring 406 is provided outside the support legs 404 to support the outside of the support legs 404 .

[0019] The utility model adopting the above technical solution has the following beneficial effects compared with the existing technology: the temperature measuring cable fixing device consists of a fixing tube, a fastening bolt and a support leg. The fixing tube can be put on the temperature measuring cable and then tightened by the fastening bolt to fix the device on the temperature measuring cable. The diameter of the support leg is slightly smaller than the diameter of the tube, ensuring that the temperature measuring cable can be placed in the tube while being fixed in the middle of the tube, thereby detecting the temperature in the middle of the tube.

[0020] Before use, the temperature is very uneven, and the temperature difference between the reaction hotspot and the tube wall is large, which cannot reflect the actual temperature conditions. As a result, deviations are easily generated when adjusting production parameters according to the detected temperature. After use, the temperature is more uniform and accurate, which has a more accurate reference value for production adjustments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to further illustrate the present invention, the following is a further description with reference to the accompanying drawings:

[0022] Figure 1 Schematic diagram of the cross-sectional structure of a fixed bed reactor;

[0023] Figure 2This is a schematic diagram of the layout of temperature cables in a fixed bed reactor;

[0024] Figure 3 is a top view of the auxiliary support structure;

[0025] Figure 4 is a side view of the auxiliary support structure;

[0026] Figure 5 Structural diagram of the auxiliary support structure with outer ring;

[0027] Figure 6 is a three-dimensional diagram of the auxiliary support structure;

[0028] Among them: 1. Fixed bed reactor; 2. Fixed bed reactor tubes; 3. Temperature cable; 301. Unsupported temperature cable; 302. Supported temperature cable; 4. Auxiliary support mechanism; 401. Fixed tube; 402. Cable space; 403. Fastening bolt; 404. Support leg; 405. Fastening bolt hole; 406. Outer ring. DETAILED DESCRIPTION

[0029] The present invention is further explained below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", "top", "bottom" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention. In addition, unless otherwise clearly specified and limited, the terms "installed", "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 a direct connection, or an indirect connection through an intermediate medium, or it can be a communication between the internal parts of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0030] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0031] This patent provides multiple parallel solutions. The differences in descriptions are improvements or parallel solutions based on the basic solution. Each solution has its own unique characteristics. In addition, the technical features involved in the different embodiments of the utility model described below can be combined with each other as long as they do not conflict with each other. The fixing method not described in the text can be any fixing method such as threaded fixing, fastening bolt fixing, or gluing.

[0032] Example 1: In conjunction with all the accompanying drawings; A fixing device for a temperature measuring cable in a fixed bed reactor is characterized in that the fixing device includes a plurality of auxiliary support mechanisms 4, each of which includes a fixing tube 401, a fastening bolt hole 405 is arranged on the fixing tube 401, and a plurality of support legs 404 also extend outward from the fixing tube 401. The substantial technical effect and implementation process of the technical solution herein, i.e., the basic function, are as follows: The temperature measuring cable fixing device comprises a fixing tube, fastening bolts, and support legs. The fixing tube can be put on the temperature measuring cable and then tightened by the fastening bolts to fix the device on the temperature measuring cable. The diameter of the support legs is slightly smaller than the diameter of the tube array, ensuring that the temperature measuring cable can be placed in the tube array while being fixed in the middle of the tube array, thereby detecting the temperature in the middle of the tube array.

[0033] Before use, the temperature is very uneven, and the temperature difference between the reaction hotspot and the tube wall is large, which cannot reflect the actual temperature conditions. As a result, deviations are easily generated when adjusting production parameters according to the detected temperature. After use, the temperature is more uniform and accurate, which has a more accurate reference value for production adjustments.

[0034] Embodiment 2: As a further improved solution or parallel solution or optional independent solution, the support legs 404 include three. The substantial technical effects and implementation process of the technical solution herein, i.e., the basic functions, are as follows: Similar numbers are within the scope of protection of this patent.

[0035] Example 3: As a further improved solution, a parallel solution, or an optional independent solution, support legs 404 can support the inner wall of the fixed-bed reactor tube 2. The substantial technical effect and implementation process of this technical solution, i.e., the basic function, are as follows: the support can fix the temperature measurement cable at the very center.

[0036] Embodiment 4: As a further improved solution, a parallel solution, or an optional independent solution, the temperature cable 3 can pass through the interior of the fixed tube 401 .

[0037] Example 5: As a further improved solution, parallel solution, or optional independent solution, the fastening bolt 403 is inserted into the fastening bolt hole 405 to fix the temperature cable 3. The substantial technical effect and implementation process of the technical solution herein, i.e., the basic function, are as follows: There are many ways to fix, and similar fixing methods are all within the scope of protection of this patent.

[0038] Example 6: As a further improved solution, a parallel solution, or an optional independent solution, the entire structure of the fixed tube 401 and the support legs 404 is slightly smaller than the inner diameter of the fixed bed reactor tube 2. The substantial technical effect and implementation process of this technical solution, i.e., the basic function, are as follows: convenient support.

[0039] Example 7: As a further improved solution or parallel solution or optional independent solution, the outer ring 406 is supported by the support legs 404. The substantial technical effect and implementation process of the technical solution here, i.e., the basic function, are as follows: the outer ring is preferably made of rubber material for better support effect.

[0040] Innovatively, each of the above effects exists independently, and a set of structures can be used to combine the above results.

[0041] It should be noted that the multiple solutions provided by this patent include the basic solutions themselves, are independent of each other, and do not restrict each other, but they can also be combined with each other without conflict to achieve multiple effects together.

[0042] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the claimed invention.

Claims

1. A fixing device for a temperature measuring cable in a fixed bed reactor, characterized in that: The fixing device comprises a plurality of auxiliary support mechanisms (4), and the plurality of auxiliary support mechanisms (4) comprise a fixing tube (401). The fixing tube (401) is provided with a fastening bolt hole (405), and a plurality of support legs (404) are also extended outward from the fixing tube (401).

2. The fixing device for a temperature measuring cable in a fixed bed reactor according to claim 1, characterized in that: The supporting legs (404) include three.

3. The fixing device for a temperature measuring cable in a fixed bed reactor according to claim 1, characterized in that: The support legs (404) are capable of supporting the inner wall of the fixed bed reactor tubes (2).

4. The fixing device for a temperature measuring cable in a fixed bed reactor according to claim 1, characterized in that: The temperature cable (3) can pass through the interior of the fixed tube (401).

5. The fixing device for a temperature measuring cable in a fixed bed reactor according to claim 1, characterized in that: The fastening bolt (403) is inserted into the fastening bolt hole (405) to fix the temperature cable (3).

6. The fixing device for a temperature measuring cable in a fixed bed reactor according to claim 1, characterized in that: The entire structure formed by the fixed tube (401) and the support legs (404) is slightly smaller than the inner diameter of the fixed bed reactor tubes (2).

7. The fixing device for a temperature measuring cable in a fixed bed reactor according to claim 1, characterized in that: The outer ring (406) of the support leg (404) is supported.

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