A thermocouple sleeve with cooling function

Abstract

The present application discloses a thermocouple sleeve with cooling function, which belongs to the field of thermocouple technology. The thermocouple sleeve with cooling function includes a sleeve body and a cooling module. The sleeve body has a receiving cavity extending along its length direction. One end of the sleeve body is closed, and the other end has an opening connected to the receiving cavity. The thermocouple is placed into the receiving cavity from the opening. The cooling module includes a baffle and a cooling tube group. The cooling tube group is installed on the baffle. The installation position of the baffle on the sleeve body is adjustable along the length direction of the sleeve body, so that the cooling tube group on the baffle corresponds to the compensation wire connected to the thermocouple in the sleeve body. The cooling tube group can cool the sleeve body. After the temperature of the sleeve body is reduced, the ambient temperature of the thermocouple and the compensation wire can be reduced, thereby reducing the oxidation rate of the thermocouple and the risk of the compensation wire being burned out by high temperature.

Description

Technical Field

[0001] The present application relates to the technical field of thermocouples, and in particular to a thermocouple sleeve with a cooling function. Background Art

[0002] A thermocouple is a temperature measuring component. Its temperature measurement principle is to form a closed loop through two conductors of different materials. The two conductors of different components are thermocouples. When there is a temperature gradient at the two ends, current will pass through the loop. At this time, there is a thermoelectric potential (ie, Seebeck effect) between the two ends. Among them, the end with higher temperature is the working end, and the end with lower temperature is the free end. The temperature measurement data of the thermocouple can be obtained based on the thermoelectric potential between the working end and the free end.

[0003] Most of the temperature-controlled thermocouples used in the production of existing carrier glass and substrate glass are made of platinum-rhodium alloy. Since rhodium is easily oxidized and volatilized at high temperatures, if the temperature of the thermocouple is not controlled, the displayed temperature of the thermocouple will change, thereby affecting the control accuracy of the actual temperature in production, and further affecting the molding quality of the carrier glass and substrate glass. In addition, the free end of the thermocouple usually needs to be connected to the control cabinet using a compensation wire. If the thermocouple is in a high temperature state for a long time, the compensation wire may burn out, which is easy to have an adverse effect on the production process.

[0004] Therefore, there is an urgent need for a thermocouple sleeve with a cooling function to solve the above problems. Utility Model Content

[0005] One object of the present application is to solve or at least alleviate part or all of the above problems. To this end, one object of the present application is to provide a thermocouple sleeve with a cooling function.

[0006] In order to achieve the above objectives, this application adopts the following technical solutions:

[0007] A thermocouple sleeve with a cooling function is used to be sleeved outside a thermocouple, wherein a compensating wire is connected to the free end of the thermocouple, and the thermocouple sleeve with a cooling function comprises:

[0008] A sleeve body, wherein the sleeve body has a receiving cavity extending along its length direction, one end of the sleeve body is closed, and the other end thereof has an opening communicating with the receiving cavity, and the thermocouple is placed into the receiving cavity through the opening;

[0009] The cooling module comprises a baffle and a cooling tube group, wherein the cooling tube group is mounted on the baffle, and the mounting position of the baffle on the sleeve body is adjustable along the length direction of the sleeve body so that the cooling tube group on the baffle corresponds to the compensation wire connected to the thermocouple in the sleeve body.

[0010] As an optional solution for the thermocouple sleeve with cooling function, the baffle has a through hole for the sleeve body to pass through, and the cooling module also includes a locking assembly, and the locking assembly is used to fix the baffle on the sleeve body.

[0011] As an optional solution for the thermocouple sleeve with cooling function, the locking assembly includes a fixing part and a locking part, the fixing part is fixed to the baffle, the fixing part is provided with a threaded hole, the locking part can be threadedly connected to the threaded hole and pass through the threaded hole to abut against the outer peripheral wall of the sleeve body.

[0012] As an optional solution for the thermocouple sleeve with cooling function, the number of the locking assemblies is at least two, and at least two of the locking assemblies are evenly arranged on the outer peripheral side of the sleeve body.

[0013] As an optional solution for the thermocouple sleeve with cooling function, the sleeve body has an outwardly protruding limiting protrusion on the outer peripheral wall close to the opening, and the projection range of the limiting protrusion on the baffle plate protrudes beyond the through hole range of the baffle plate.

[0014] As an optional solution for the thermocouple sleeve with cooling function, the cooling tube group includes a cooling tube, a liquid inlet tube connected to the inlet of the cooling tube, and a liquid outlet tube connected to the outlet of the cooling tube, and the liquid inlet tube and the liquid outlet tube are both connected to an external cooling system.

[0015] As an optional solution for the thermocouple sleeve with cooling function, the cooling tube is annular, the cooling tube is sleeved outside the sleeve body, and the line between the inlet of the cooling tube and the outlet of the cooling tube passes through the center of the cooling tube.

[0016] As an optional solution for the thermocouple sleeve with cooling function, the number of the cooling tube groups is at least two.

[0017] As an optional solution of the thermocouple sleeve with cooling function, the cooling tubes of all the cooling tube groups are arranged in sequence along the length direction of the sleeve body; or

[0018] The diameters of all the cooling tubes are different, and the cooling tubes of all the cooling tube groups are arranged in a ring and concentrically in sequence.

[0019] As an optional solution for the thermocouple sleeve with cooling function, all the liquid inlet pipes and all the liquid outlet pipes are evenly spaced along the circumference of the sleeve body.

[0020] The beneficial effects of this application are:

[0021] The present application provides a thermocouple sleeve with a cooling function, comprising a sleeve body and a cooling module. The sleeve body is provided with a housing cavity extending along its length direction. One end of the sleeve body is closed, and the other end thereof is provided with an opening connected to the housing cavity, and the thermocouple is placed into the housing cavity through the opening. The cooling module comprises a baffle and a cooling tube group. The cooling tube group is installed on the baffle. The installation position of the baffle on the sleeve body is adjustable along the length direction of the sleeve body so that the cooling tube group on the baffle corresponds to the compensation wire connected to the thermocouple in the sleeve body. The cooling tube group can cool the sleeve body. After the temperature of the sleeve body is reduced, the ambient temperature of the thermocouple and the compensation wire can be reduced, thereby reducing the oxidation rate of the thermocouple and the risk of the compensation wire being burned out by high temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments of the present application. 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 the contents of the embodiments of the present application and these drawings without paying any creative work.

[0023] Figure 1 Schematic diagram of the structure of a thermocouple sleeve with cooling function provided in an embodiment of the present application;

[0024] Figure 2 yes Figure 1 A schematic cross-sectional view of a thermocouple sleeve having a cooling function;

[0025] Figure 3 yes Figure 1 Schematic diagram of the local structure of the thermocouple sleeve with cooling function.

[0026] Reference numerals:

[0027] 1. sleeve body; 10. opening; 11. limiting protrusion;

[0028] 2. Baffle;

[0029] 31. Cooling pipe; 32. Liquid inlet pipe; 33. Liquid outlet pipe;

[0030] 4. Locking assembly; 41. Fixing piece; 42. Locking piece. DETAILED DESCRIPTION

[0031] Before any embodiments of the application are explained in detail, it is to be understood that the application is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the above drawings.

[0032] In this application, the terms "comprises", "includes", "has" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of more restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device that includes the element.

[0033] In this application, the term "and / or" is a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the related objects before and after are in an "and / or" relationship.

[0034] In the present application, the terms "connect", "combine", "couple", and "install" may refer to direct connection, combination, coupling, or installation, or indirect connection, combination, coupling, or installation. For example, direct connection refers to two parts or components being connected together without the need for an intermediate piece, and indirect connection refers to two parts or components being connected to at least one intermediate piece respectively, and the two parts or components being connected via the intermediate piece. In addition, "connect" and "couple" are not limited to physical or mechanical connections or couplings, and may include electrical connections or couplings.

[0035] In the present application, it will be understood by those of ordinary skill in the art that relative terms (e.g., "about," "approximately," "substantially," etc.) used in conjunction with quantities or conditions include the values ​​and have the meaning indicated by the context. For example, the relative terms include at least the degree of error associated with the measurement of a specific value, the tolerances caused by manufacturing, assembly, and use associated with a specific value, and the like. Such terms should also be considered to disclose a range defined by the absolute values ​​of the two endpoints. Relative terms may refer to plus or minus a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values ​​that do not use relative terms should also be disclosed as specific values ​​with tolerances. In addition, "substantially" may refer to plus or minus a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) on the basis of the indicated angle when expressing a relative angular position relationship (e.g., substantially parallel, substantially perpendicular).

[0036] In this application, it will be understood by those skilled in the art that the function performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the function performed by a part can also be performed by one part, one component, or a combination of multiple parts.

[0037] In the present application, the terms "upper", "lower", "left", "right", "front", "back" and other directional words are described based on the orientation and positional relationship shown in the accompanying drawings, and should not be understood as limiting the embodiments of the present application. In addition, in the context, it is also necessary to understand that when it is mentioned that an element is connected to another element "upper" or "lower", it can not only be directly connected to another element "upper" or "lower", but also indirectly connected to another element "upper" or "lower" through an intermediate element. It should also be understood that directional words such as upper side, lower side, left side, right side, front side, back side, etc. not only represent the positive orientation, but can also be understood as the lateral orientation. For example, the bottom can include directly below, lower left, lower right, lower front, and lower back, etc.

[0038] When the thermocouple is working, its free end needs to be connected to the control cabinet using a compensation wire to achieve temperature compensation of the free end of the thermocouple and improve the detection accuracy of the thermocouple. For thermocouples made of platinum-rhodium alloy, if the thermocouple is in a high temperature state for a long time, it will not only cause the rhodium in the thermocouple to oxidize and volatilize, but also may cause the compensation wire to burn out, which is easy to have an adverse effect on the production process.

[0039] In order to solve the above problems, the present application provides a thermocouple sleeve with a cooling function, which is used to cool the thermocouple and the compensation wire connected to its free end, so as to reduce the oxidation rate of the thermocouple and the risk of the compensation wire being burned out, and improve the stability of the thermocouple.

[0040] Figure 1 The schematic diagram of the structure of the thermocouple sleeve with cooling function provided by the present application is shown. Figure 2 Shows Figure 1 Schematic diagram of the cross-section of the thermocouple sleeve with cooling function. Figure 1 to Figure 2 As shown, the thermocouple sleeve with cooling function provided in the present application includes a sleeve body 1 and a cooling module. The sleeve body 1 has an accommodating cavity extending along its length direction. One end of the sleeve body 1 is closed, and the other end thereof has an opening 10 connected to the accommodating cavity. The thermocouple is placed in the accommodating cavity from the opening 10; the cooling module includes a baffle 2 and a cooling tube group. The cooling tube group is installed on the baffle 2. The installation position of the baffle 2 on the sleeve body 1 is adjustable along the length direction of the sleeve body 1 so that the cooling tube group on the baffle 2 corresponds to the compensation wire connected to the thermocouple in the sleeve body 1. The cooling tube group can cool the sleeve body 1. After the temperature of the sleeve body 1 is reduced, the ambient temperature of the thermocouple and the compensation wire can be reduced, thereby reducing the oxidation rate of the thermocouple and the risk of the compensation wire being burned out by high temperature.

[0041] The cooling tube group includes a cooling tube 31, a liquid inlet tube 32 connected to the inlet of the cooling tube 31, and a liquid outlet tube 33 connected to the outlet of the cooling tube 31. The liquid inlet tube 32 and the liquid outlet tube 33 are both connected to the external cooling system. In this way, the cooling tube group can be supplied with circulating coolant, and the sleeve body 1 and the compensating wire located in the sleeve body 1 can be cooled by the coolant to avoid the compensating wire being in a high temperature state and reduce the risk of the compensating wire being burned. The coolant can be pure water with a resistivity of 10MΩ or less to prevent the coolant from generating scale and clogging the cooling tube group due to long-term use, thereby ensuring the cooling effect.

[0042] The cooling pipe 31 is annular and is sleeved outside the sleeve body 1. The line between the inlet and outlet of the cooling pipe 31 passes through the center of the cooling pipe 31 to ensure uniform cooling of the sleeve body 1 and avoid local overheating of the sleeve body 1.

[0043] The cooling pipe 31 is embedded in the baffle 2, and the cooling pipe 31 is in direct contact with the baffle 2, and the baffle 2 is in direct contact with the sleeve body 1. The heat transfer efficiency between the three is higher than the heat transfer efficiency between the heat in the air and the cooling pipe 31 (or the baffle 2), thereby improving the cooling efficiency of the cooling pipe 31 on the sleeve body 1. Since the compensation wire is in the sleeve body 1, the temperature of the sleeve body 1 is reduced, which can reduce the ambient temperature of the compensation wire, thereby reducing the risk of the compensation wire being burned out by high temperature.

[0044] The liquid inlet pipe 32 is L-shaped, one arm of the liquid inlet pipe 32 extends along the length direction of the sleeve body 1, and the other arm extends toward the side away from the sleeve body 1; the liquid outlet pipe 33 is L-shaped, one arm of the liquid outlet pipe 33 extends along the length direction of the sleeve body 1, and the other arm extends toward the side away from the sleeve body 1.

[0045] In this embodiment, the number of cooling tube groups is two. The diameters of the cooling tubes 31 of the two cooling tube groups are different, and the two cooling tubes 31 are arranged in a circle and concentrically in sequence. In other embodiments, the cooling tubes 31 of the two cooling tube groups can also be arranged in sequence along the length direction of the sleeve body 1. It can be understood that the number of cooling tube groups is not limited to two, but can be any number such as three, four, five, six, etc. The cooling tubes 31 in the cooling tube group can be arranged concentrically or in sequence along the length direction of the sleeve body 1. The specific design can be made according to needs and is not limited here.

[0046] When the number of cooling tube groups is two or more, all liquid inlet pipes 32 and liquid outlet pipes 33 are evenly spaced along the circumference of the sleeve body 1 to facilitate the arrangement of the liquid inlet pipes 32 and the liquid outlet pipes 33 and avoid interference between the liquid inlet pipes 32 and the liquid outlet pipes 33.

[0047] Figure 3 Shows Figure 1Schematic diagram of the local structure of the thermocouple sleeve with cooling function. Figure 3 As shown, the baffle 2 has a through hole for the sleeve body 1 to pass through, and the cooling module also includes a locking assembly 4, which is used to fix the baffle 2 on the sleeve body 1. The locking assembly 4 can be used to adjust the installation position of the baffle 2 on the sleeve body 1, which is not only convenient for the thermocouple to measure the temperature at different depths, but also enables the cooling tube 31 in the baffle 2 to cool the thermocouple and the compensation wire connected thereto, thereby reducing the oxidation rate of the thermocouple and the risk of the compensation wire being burned out by high temperature.

[0048] In this embodiment, the locking assembly 4 includes a fixing member 41 and a locking member 42. The fixing member 41 is fixed to the baffle 2. The fixing member 41 is provided with a threaded hole. The locking member 42 can be threadedly connected with the threaded hole and pass through the threaded hole to abut against the outer peripheral wall of the sleeve body 1. When it is necessary to adjust the installation position of the baffle 2 on the sleeve body 1, the locking member 42 is first screwed and loosened, and then the baffle 2 is moved to the desired position, and finally the locking member 42 is screwed and locked, so that the locking member 42 abuts against the outer peripheral wall of the sleeve body 1, so as to achieve the fixing of the baffle 2 on the sleeve body 1. In other embodiments, the locking assembly 4 can also fix the baffle 2 on the sleeve body 1 by a clamping method. As long as the solution that can realize the detachable connection between the baffle 2 and the sleeve body 1 is possible, it is not limited here.

[0049] In this embodiment, the fixing member 41 and the baffle 2 are integrally formed. In other embodiments, the fixing member 41 can also be fixed to the baffle 2 by riveting, bonding, clamping, etc., which are not limited here. A threaded hole is provided on the fixing member 41, and the locking member 42 is a headed bolt. For example, the headed bolt can also be a standard headed bolt, which can reduce the cost of parts.

[0050] In this embodiment, the number of locking assemblies 4 is four, and the four locking assemblies 4 are evenly arranged on the outer circumference of the sleeve body 1 to ensure that the circumference of the sleeve body 1 is evenly stressed. In other embodiments, the number of locking assemblies 4 is not limited to four, and can also be any number such as two, three, five, six, seven, eight, etc., and all locking assemblies 4 are evenly arranged on the outer circumference of the sleeve body 1.

[0051] The outer peripheral wall of the sleeve body 1 near the opening 10 has a limiting protrusion 11 protruding outward, and the projection range of the limiting protrusion 11 on the baffle 2 protrudes beyond the through hole range of the baffle 2, which can prevent the sleeve body 1 from being separated from the baffle 2 at its opening 10 end. It can be understood that when the sleeve body 1 and the baffle 2 are assembled, the closed end of the sleeve body 1 is passed through the through hole of the baffle 2. Since the opening 10 end of the sleeve body 1 has the limiting protrusion 11, the limiting protrusion 11 can abut against the baffle 2 to prevent the sleeve body 1 from being separated from the baffle 2 at the limiting protrusion 11.

[0052] In this embodiment, there are four limiting protrusions 11, which are evenly arranged on the outer peripheral wall of the sleeve body 1. In other embodiments, the number of limiting protrusions 11 is not limited to four, but can be any number such as two, three, five, etc., which is not limited here.

[0053] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the above embodiments do not limit the present application in any form, and any technical solution obtained by equivalent replacement or equivalent transformation falls within the protection scope of the present application.

Claims

1. A thermocouple sleeve with cooling function, used for sleeved outside a thermocouple, wherein the free end of the thermocouple is connected with a compensation wire, characterized in that: The thermocouple sleeve with cooling function comprises: A sleeve body (1), wherein the sleeve body (1) has a receiving cavity extending along its length direction, one end of the sleeve body (1) is closed, and the other end thereof has an opening (10) connected to the receiving cavity, and the thermocouple is placed into the receiving cavity through the opening (10); A cooling module comprises a baffle (2) and a cooling tube group, wherein the cooling tube group is mounted on the baffle (2), and the mounting position of the baffle (2) on the sleeve body (1) is adjustable along the length direction of the sleeve body (1) so that the cooling tube group on the baffle (2) corresponds to a compensation wire connected to a thermocouple in the sleeve body (1).

2. The thermocouple sleeve with cooling function according to claim 1, characterized in that: The baffle (2) has a through hole for the sleeve body (1) to pass through, and the cooling module further comprises a locking assembly (4), wherein the locking assembly (4) is used to fix the baffle (2) on the sleeve body (1).

3. The thermocouple sleeve with cooling function according to claim 2, characterized in that: The locking assembly (4) comprises a fixing member (41) and a locking member (42); the fixing member (41) is fixed to the baffle (2); the fixing member (41) is provided with a threaded hole; the locking member (42) can be threadedly connected to the threaded hole and pass through the threaded hole to abut against the outer peripheral wall of the sleeve body (1).

4. The thermocouple sleeve with cooling function according to claim 3, characterized in that: The number of the locking components (4) is at least two, and at least two of the locking components (4) are evenly arranged on the outer peripheral side of the sleeve body (1).

5. The thermocouple sleeve with cooling function according to claim 2, characterized in that: The sleeve body (1) has a limiting protrusion (11) protruding outward on the outer peripheral wall near the opening (10), and the projection range of the limiting protrusion (11) on the baffle (2) protrudes beyond the through hole range of the baffle (2).

6. The thermocouple sleeve with cooling function according to claim 1, characterized in that: The cooling pipe group comprises a cooling pipe (31), a liquid inlet pipe (32) connected to the inlet of the cooling pipe (31), and a liquid outlet pipe (33) connected to the outlet of the cooling pipe (31), and the liquid inlet pipe (32) and the liquid outlet pipe (33) are both connected to an external cooling system.

7. The thermocouple sleeve with cooling function according to claim 6, characterized in that: The cooling pipe (31) is annular and is sleeved outside the sleeve body (1). The line between the inlet of the cooling pipe (31) and the outlet of the cooling pipe (31) passes through the center of the cooling pipe (31).

8. The thermocouple sleeve with cooling function according to claim 7, characterized in that: The number of the cooling tube groups is at least two.

9. The thermocouple sleeve with cooling function according to claim 8, characterized in that: The cooling tubes (31) of all the cooling tube groups are arranged in sequence along the length direction of the sleeve body (1); or The diameters of the cooling tubes (31) of all the cooling tube groups are different, and all the cooling tubes (31) are arranged in a circular manner and concentrically.

10. The thermocouple sleeve with cooling function according to claim 9, characterized in that: All the liquid inlet pipes (32) and all the liquid outlet pipes (33) are evenly spaced and arranged along the circumference of the sleeve body (1).

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