A device for measuring the temperature of the fin of a boiler water wall

Abstract

The present invention discloses a temperature measuring device for the fin of a boiler water wall, which is characterized in that: it includes a through hole 1 provided on the fin of the water wall, a heat collecting block provided in the through hole 1 and connected and fixed to the fin of the water wall, and a thermocouple provided in the heat collecting block. A fixing device for fixing the thermocouple is provided on the heat collecting block. By inserting the thermocouple into the fin, the present invention can measure the temperature of the inner surface of the fin, which can more truly reflect the working temperature of the fin compared with the conventional measurement of the outer surface temperature of the fin. At the same time, by setting the heat collecting block, the thermocouple is fastened at the fin, making the thermocouple not easy to fall off and improving the reliability of the temperature measuring point. The present invention is simple to install, low in cost and high in feasibility, and can be installed at the fins of most boiler water walls, with wide applications.

Description

Technical Field

[0001] The present invention relates to a temperature measuring device for the fin of a boiler water wall, belonging to the technical field of combustion equipment. Background Art

[0002] Existing experience shows that the fouling condition of this area can be better predicted by using the fin temperature of the boiler water wall and combining with the working medium temperature. At present, the measurement of the working medium temperature is relatively easy to achieve, but there are still certain difficulties in the measurement of the fin temperature. According to the conventional method, usually the method of fixing the thermocouple on the outer surface of the fin by using a pressing block is adopted to measure the fin temperature, but the measured outer surface temperature of the fin is close to the working medium temperature, and it cannot well reflect the temperature difference between the fin and the working medium, which is not conducive to judging the fouling condition of the water wall.

[0003] Therefore, it is particularly important to study a temperature measuring device with accurate temperature measurement, convenient and stable installation of the thermocouple. Summary of the Invention

[0004] The technical problem to be solved by the present invention is: the problem that the data of the conventional temperature measuring device for the fin of the boiler water wall is inaccurate and the installation of the thermocouple is not stable.

[0005] To solve the above problems, the technical solution of the present invention is to provide a temperature measuring device for the fin of a boiler water wall, characterized in that: it includes a through hole 1 provided on the fin of the water wall, a heat collecting block provided in the through hole 1 and connected and fixed to the fin of the water wall, and a thermocouple provided in the heat collecting block, and a fixing device for fixing the thermocouple is provided on the heat collecting block.

[0006] Preferably, the fixing device includes a through hole 2 provided on the heat collecting block for placing the thermocouple, and a threaded hole is provided on the heat collecting block perpendicular to the through hole 2, and the thermocouple is locked and fixed in the through hole 2 by matching a fastener with the threaded hole.

[0007] Preferably, the through hole 1 is arranged along the thickness direction of the fin of the water wall, and the depth of the heat collecting block in the through hole 1 is the same as the thickness of the fin of the water wall.

[0008] Preferably, the direction of the through hole 2 is the same as the direction in which the heat collecting block is inserted into the through hole 1.

[0009] Preferably, the depth of the thermocouple in the through hole 2 is the same as the height of the heat collecting block.

[0010] Preferably, the heat collecting block and the through hole 1 are fixed by threaded connection or welding.

[0011] Preferably, the heat collecting block is a cylinder or a cuboid, and the through hole 2 runs through the center of the heat collecting block.

[0012] Preferably, the material of the heat collecting block is alloy steel.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] (1) In the present invention, the thermocouple is inserted into the fin, and the temperature of the inner surface of the fin can be measured. Compared with the conventional measurement of the outer surface temperature of the fin, it can more truly reflect the working temperature of the fin;

[0015] (2) In the present invention, by providing a heat collecting block to fasten the thermocouple at the fin, the thermocouple is not easily detached, improving the reliability of the temperature measurement point;

[0016] (3) The present invention is simple to install, low in cost and high in feasibility, and can be used in supporting with most of the finned tubes of the boiler water wall, with wide applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The present invention relates to a temperature measuring device for the finned tube of a boiler water wall. DETAILED DESCRIPTION OF THE INVENTION

[0018] To make the present invention more obvious and understandable, preferred embodiments are described in detail below in conjunction with the accompanying drawings.

[0019] As Figure 1 shown, a temperature measuring device for the finned tube of a boiler water wall according to the present invention includes a heat collecting block 1, a thermocouple 2 and a bolt 3. In this embodiment, the thickness of the finned tube 4 of the water wall is 6 mm. A through hole 5 is opened in the thickness direction of the finned tube 4 of the water wall, and the heat collecting block 1 is inserted into the through hole 5. The outer diameter of the heat collecting block 1 is Φ12 mm, and the depth of the heat collecting block 1 inserted into the through hole 5 is the same as the thickness of the finned tube 4 of the water wall. The bottom end of the heat collecting block 1 is flush with the bottom surface of the finned tube 4 of the water wall, and the top end of the heat collecting block 1 is 10 mm higher than the top surface of the finned tube 4 of the water wall. The heat collecting block 1 and the through hole 5 can be fixed in the through hole 5 of the finned tube 4 of the water wall by welding the heat collecting block 1, or threads can be machined in the through hole 5, and the heat collecting block 1 can be fixed to the finned tube 4 of the water wall by means of threaded connection.

[0020] The heat collecting block 1 is cylindrical or cuboid in shape, and the material is made of alloy steel. A smooth Φ4 mm through hole 6 is processed through the center position of the heat collecting block 1, and the direction of the through hole 6 is the same as the direction of the heat collecting block 1 inserted into the through hole 5. An M5 threaded hole 7 is processed on the side wall of the heat collecting block 1, and the direction of the threaded hole 7 is perpendicular to the through hole 6. The thermocouple 2 with a specification of Φ3 mm is inserted into the through hole 6 of the heat collecting block 1, and the insertion depth is the same as the height of the heat collecting block 1. The bolt 3 is screwed into the threaded hole 7 of the heat collecting block 1 to fasten the thermocouple 2 in the through hole 6. The thermocouple 2 is inserted into the finned tube 4 of the water wall, and the temperature of the inner surface of the finned tube 4 of the water wall can be measured. Compared with the conventional measurement of the outer surface temperature of the finned tube 4 of the water wall, it can more truly reflect the working temperature of the finned tube 4 of the water wall.

[0021] The protection scope of the present invention is not limited to the above examples. Any equivalent structural or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall similarly be included in the protection scope of the patent of the present invention.

Claims

1. A temperature measuring device for the fin of a boiler water wall, characterized in that: It includes a first through hole (5) provided on the water wall fin (4), a heat collecting block (1) provided in the first through hole (5) and fixedly connected to the water wall fin (4), and a thermocouple (2) provided in the heat collecting block (1). A fixing device for fixing the thermocouple (2) is provided on the heat collecting block (1); The fixing device includes a second through hole (6) provided through the heat collecting block (1) for placing the thermocouple (2). A threaded hole (7) is provided on the heat collecting block (1) perpendicular to the second through hole (6). The thermocouple (2) is locked and fixed in the second through hole (6) by matching a fastener with the threaded hole (7); The bottom end of the heat collecting block (1) is flush with the bottom surface of the water wall fin (4).

2. The temperature measuring device for the fin of the boiler water wall according to claim 1, characterized in that: The first through hole (5) is arranged along the thickness direction of the water wall fin (4), and the depth of the heat collecting block (1) located in the first through hole (5) is the same as the thickness of the water wall fin (4).

3. A boiler water wall fin temperature measuring device according to claim 1, characterized in that: The direction of the second through hole (6) is the same as the direction in which the heat collecting block (1) is inserted into the first through hole (5).

4. The boiler water wall fin temperature measuring device according to claim 1, wherein: The depth of the thermocouple (2) located in the second through hole (6) is the same as the height of the heat collecting block (1).

5. The boiler water wall fin temperature measuring device according to claim 1, characterized in that: The heat collecting block (1) and the first through hole (5) are fixed by threaded connection or welding.

6. The temperature measuring device for the fin of the boiler water wall according to claim 1, characterized in that: The heat collecting block (1) is a cylinder or a cuboid, and the second through hole (6) is arranged through the center position of the heat collecting block (1).

7. The temperature measuring device for the fin of the boiler water wall according to claim 1, wherein: The material of the heat collecting block (1) is alloy steel.

Images