Air bellow temperature measuring device

Abstract

One end of an outer protection tube is connected with a junction box, and the other end of the outer protection tube is connected with a first flange; one end of the inner protection tube is connected with the first flange, the other end of the inner protection tube is connected with the mounting rod, and a plurality of thermocouple temperature measurement units are arranged in the inner protection tube; a flange sealing structure is arranged on the outer side of the second flange. According to the air box temperature measuring device, the whole thermocouple is installed on the air box wall, the two ends of the thermocouple are fixed, thermocouple temperature measuring units with different lengths are arranged in the air box according to design requirements, and then the inner protection pipe is used for protection, so that blowing at high air speed is avoided. Therefore, under the condition that the internal structure of the air bellow is not changed, the blowing influence of high air speed is avoided, and the service life of the air bellow is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of thermocouple temperature measurement, and more specifically relates to a temperature measuring device used in a bellows. Background Art

[0002] Dryers are generally equipped with bellows, such as Figure 1 As shown. During the operation of the dryer, the temperature in the air box needs to be measured and monitored. Figure 2 Generally speaking, in the bellows, thermocouples are installed along the two positions indicated by F for temperature measurement, that is, thermocouples are installed at the two positions indicated by F and extend to the center of the bellows, and temperature measurement points are designed on the two thermocouples according to design requirements. However, this design has the following problems in actual use: (1) The two installed thermocouples are only fixed at the bellows wall, and in the bellows, according to the operating requirements of the dryer, no further installation positions can be added; (2) Due to the above problems, the two thermocouples are equivalent to being fixed on only one side, while the other side is suspended in the bellows. Given the high wind speed in the bellows, as the use time increases, the high wind speed can easily blow the two thermocouples suspended in the bellows away from the preset temperature measurement position, thereby causing inaccurate temperature measurement; (3) At the same time, the bellows wall is generally thin, and the single-sided installation can easily reduce the service life of the thermocouples. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a temperature measuring device used in a bellows.

[0004] The technical purpose of the present invention is achieved through the following technical solutions.

[0005] A bellows temperature measuring device includes a junction box, an outer protective tube, a first flange, an inner protective tube, a thermocouple temperature measuring unit, a second flange and a flange sealing structure, wherein:

[0006] One end of the outer protective tube is connected to the junction box, and the other end is connected to the first flange;

[0007] One end of the inner protection tube is connected to the first flange, and the other end is connected to the mounting rod. A plurality of thermocouple temperature measuring units are arranged in the inner protection tube;

[0008] A flange sealing structure is arranged on the outside of the second flange, including a spare nut, a pressure nut, a first sealing gasket, a second sealing gasket, and a flange sealing joint, wherein: the mounting rod passes through the second flange and the flange sealing joint fixedly connected to the second flange, the first sealing gasket and the second sealing gasket are arranged between the mounting rod and the flange sealing joint, and a thread is arranged on the outer surface of the mounting rod extending out of the flange sealing joint to form a threaded area of ​​the mounting rod, and the pressure nut and the spare nut are threadedly sleeved on the threaded area of ​​the mounting rod and press the first sealing gasket and the second sealing gasket.

[0009] In the technical solution of the present utility model, the thermocouple temperature measuring unit is an armored thermocouple.

[0010] In the technical solution of the present utility model, the first sealing gasket is a hard rubber sealing gasket or a metal sealing gasket, and the second sealing gasket is a graphite sealing gasket.

[0011] The bellows temperature measuring device of the present invention is used to install an integral thermocouple on the bellows wall, with both ends fixed. Thermocouple temperature measuring units of different lengths (such as armored thermocouples) are arranged in the bellows according to design requirements, and then protected with an internal protective tube to avoid high-speed winds. In this way, the effects of high-speed winds can be avoided without changing the internal structure of the bellows, and its service life can be extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic diagram of a dryer equipped with a bellows.

[0013] Figure 2 yes Figure 1 Schematic diagram of the AA direction.

[0014] Figure 3 It is a structural diagram of the present utility model.

[0015] Figure 4 yes Figure 3 Structural diagram of the structure in the dotted box.

[0016] Among them, 1 is the junction box, 2 is the outer protective tube, 3 is the first flange, 4 is the inner protective tube, 5 is the thermocouple temperature measuring unit, 6 is the second flange, 7 is the flange sealing structure, 7-1 is the spare nut, 7-2 is the pressure nut, 7-3 is the first sealing gasket, 7-4 is the second sealing gasket, 7-5 is the flange sealing joint, 8 is the mounting rod, and 8-1 is the threaded area of ​​the mounting rod. DETAILED DESCRIPTION

[0017] The technical solution of the present utility model is further described below with reference to specific embodiments.

[0018] Combined with background description and Figure 1-2 As shown, the utility model is installed in Figure 2 In the bellows between the two F positions. The bellows temperature measuring device of the utility model, such as Figure 3 As shown, it includes a junction box, an outer protective tube, a first flange, an inner protective tube, a thermocouple temperature measuring unit, a second flange and a flange sealing structure, wherein:

[0019] One end of the outer protective tube is connected to the junction box, and the other end is connected to the first flange; the first flange is fixedly installed on Figure 2The bellows temperature measuring device is positioned at the upper position shown in F. Thus, one end of the bellows temperature measuring device is fixedly mounted to the bellows wall. It should be noted that a conventional leak-proof sealing structure is provided in the outer protective tube to provide sealing protection for the thermocouple temperature measuring unit located outside the bellows, extending from the first flange to the junction box.

[0020] One end of the inner protection tube is connected to the first flange, and the other end is connected to the mounting rod. Several thermocouple temperature measuring units, such as armored thermocouples, are set in the inner protection tube; the second flange is fixedly installed on Figure 2 In the position shown by F below, in this way, in the wind box, the inner protection tube is arranged along the FF direction, and the temperature measuring points of different thermocouple temperature measuring units are set at preset temperature measuring positions according to design requirements (that is, different thermocouple temperature measuring units have different lengths, so that the temperature measuring points are located at preset temperature measuring positions). Due to the protection of the inner protection tube, the thermocouple temperature measuring units of different lengths located inside avoid erosion by high wind speed and deviation of the temperature measuring position.

[0021] A flange sealing structure is provided on the outside of the second flange, including a spare nut, a pressure nut, a first sealing gasket, a second sealing gasket, and a flange sealing joint, wherein:

[0022] The mounting rod extends through the second flange and the flange sealing joint fixedly connected to the second flange. A first and second sealing gaskets are positioned between the mounting rod and the flange sealing joint. Threads are provided on the outer surface of the mounting rod extending from the flange sealing joint to form a threaded area of ​​the mounting rod. The compression nut and backup nut are threadedly fitted over the threaded area of ​​the mounting rod to compress the first and second sealing gaskets. The first sealing gasket is a hard rubber gasket, and the second sealing gasket is a graphite gasket.

[0023] When installing, fix the second flange on Figure 2 At position F, located at the bottom, the mounting rod passes through the second flange and the flange sealing joint fixedly connected to the second flange. A compression nut and a backup nut are provided in the threaded area of ​​the mounting rod. These nut, backup nut, and threads cooperate to compress the first and second gaskets. During installation, the mounting rod and the second flange can be adjusted by adjusting the position of the second flange on the mounting rod, and then the flange sealing structure is used for sealing installation.

[0024] The above is an exemplary description of the present invention. It should be noted that, without departing from the core of the present invention, any simple deformation, modification or other equivalent replacement that can be made by other technical personnel in this field without expending creative labor falls within the scope of protection of the present invention.

Claims

1. Bellows temperature measuring device, characterized in that, It includes a junction box, an outer protective tube, a first flange, an inner protective tube, a thermocouple temperature measuring unit, a second flange and a flange sealing structure, wherein: One end of the outer protective tube is connected to the junction box, and the other end is connected to the first flange; One end of the inner protection tube is connected to the first flange, and the other end is connected to the mounting rod. A plurality of thermocouple temperature measuring units are arranged in the inner protection tube; A flange sealing structure is arranged on the outside of the second flange, including a spare nut, a pressure nut, a first sealing gasket, a second sealing gasket, and a flange sealing joint, wherein: the mounting rod passes through the second flange and the flange sealing joint fixedly connected to the second flange, the first sealing gasket and the second sealing gasket are arranged between the mounting rod and the flange sealing joint, and a thread is arranged on the outer surface of the mounting rod extending out of the flange sealing joint to form a threaded area of ​​the mounting rod, and the pressure nut and the spare nut are threadedly sleeved on the threaded area of ​​the mounting rod and press the first sealing gasket and the second sealing gasket.

2. The bellows temperature measuring device according to claim 1, characterized in that: The thermocouple temperature measuring unit is an armored thermocouple.

3. The bellows temperature measuring device according to claim 1 or 2, characterized in that: The first sealing gasket is a hard rubber sealing gasket or a metal sealing gasket.

4. The bellows temperature measuring device according to claim 1 or 2, characterized in that: The second sealing gasket is a graphite sealing gasket.

5. The bellows temperature measuring device according to claim 3, characterized in that: The second sealing gasket is a graphite sealing gasket.

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