JPH0445038Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The invention is applicable to various heating furnaces, reforming furnaces, etc.
The present invention relates to a protection tube that protects a measuring device from radiant heat inside the furnace when measuring the atmospheric temperature inside the furnace.

[Prior Art] In designing or actually using a furnace, it is essential to equalize the temperature of the atmosphere inside the furnace in order to equalize the quality of the product.

Therefore, in the past, a protection pipe 0 having a double structure of inside and outside cooling water circulation channels 02 and 03 as shown in Fig. 7 was used.
1 is inserted into the furnace 04 from the ceiling as shown in FIG. The distribution of the temperature inside the furnace is understood by measuring the total temperature at 07.

Further, as shown in FIG. 6, the protective tube 01 has a structure that can be extended by connecting an intermediate protective tube 06.

[Problems with the prior art] However, in the above-mentioned conventional protection tube, the furnace 0
In order to investigate the temperature distribution of the atmosphere in furnace 04,
It is necessary to perform measurements at various locations within the protective tube 01, and for this purpose, it is necessary to align the intermediate protective tube 06 by adding or removing the intermediate protective tube 06 from the protective tube 01 one by one.

Conventionally, the circulation of the cooling water was stopped each time, and if left as it was, it would boil inside the furnace 04, so the procedure was to pull it out of the furnace 04, perform the connection work, and then reinsert it into the furnace 04. It's summery. For this reason, there is a drawback that measurement work takes time and effort. Further, if the furnace 04 is small, it is possible to pull it up in this way, but if the furnace 04 is large, the ceiling of the factory or the crane may get in the way, making it difficult to pull it up.

The present invention has been proposed in view of the above points, and it is an object of the present invention to propose a protection tube for measuring the temperature of the furnace atmosphere, which allows the protection tube to be easily extended or shortened while circulating cooling water. It is a purpose.

[Means for Solving the Problems] As a means for achieving the above object, the present invention proposes a furnace atmosphere temperature measuring device having the following configuration.

A cooling water inlet and a cooling water connection inlet are formed in the body part, and a cooling water inlet and a cooling water connection inlet following the cooling water outgoing path are formed in the body, and a cooling water inlet and a cooling water connection outlet are formed in the upper flange. Intermediate protection consisting of switching valves installed at the cooling water connection inlet, cooling water outlet, and cooling water connection outlet, respectively, a cooling water communication inlet and a cooling water communication outlet formed in the lower flange, and a temperature measuring device insertion tube in the center. The pipe constitutes an outgoing path and a returning path for cooling water in the body, and the outgoing path and the returning path communicate with each other at the tip of the body, and the upper flange has a cooling water inlet following the cooling water outgoing path, a cooling water connection inlet, and a cooling water connection inlet that continues to the returning path. Tip protection that forms a cooling water outlet and a cooling water connection outlet, incorporates a switching valve in each of the cooling water inlet and the cooling water connection inlet, and the cooling water outlet and the cooling water connection outlet, and configures a temperature measuring device insertion tube in the center. A protection tube for measuring the temperature of the furnace atmosphere, consisting of a tube and a tube.

The circulation waterway in the protection pipe described above may have a double structure with the outer side being the outgoing path and the inner side being the return path, and the measuring instrument insertion tube may be configured in the center, or the circulation waterway may be divided into two on the left and right, with one side serving as the outgoing path. , the other may be configured as a return trip.

Further, the central measuring device insertion tube may be integrated with the protection tube, that is, have a triple tube structure, or an insertion tube separate from the protection tube may be combined with the protection tube to form an integral structure.

[Function] The protective tube is inserted and fixed into a temperature measurement hole opened in the ceiling of the furnace, a measuring device is inserted into the center of the protective tube, and the atmosphere inside the furnace is sucked from the measuring device.
The ambient temperature is measured with a thermometer outside the furnace.

For the protection tube, if only the tip protection tube is required, connect the cooling water circulation pipes to the cooling water inlet and outlet of the tip protection tube, respectively, and insert the protection tube into the furnace while circulating the cooling water inside using a circulation pump (not shown). and fix it. When extending the length further, an intermediate protection tube is connected to the tip protection tube while continuing the circulation of the cooling water, and a cooling water circulation pipe is connected to the cooling water inlet and outlet of the intermediate protection tube. Then, switch the switching valve of the tip protection tube to circulate cooling water from the intermediate protection tube to the tip protection tube side, then remove the cooling water circulation pipe from the tip protection tube, and insert the intermediate protection tube into the furnace to extend it. conduct. If you want to extend it further, connect the intermediate protection tube in the same way. In addition, when shortening the protection tube, it is done by removing the intermediate protection tube, contrary to the above.

[Example] Figures 1 to 5 show examples of the present invention. In Figure 1, 1 is a furnace, and 2 is a protective tube inserted into the furnace 1 to measure the ambient temperature inside the furnace 1. hand,
An atmosphere suction tube 3 is inserted into and out of the protection tube 2 at will.

FIG. 2 shows the intermediate protection tube 6 in the protection tube 2, and the extension and shortening of the protection tube 2 is this intermediate protection tube 6.
This is done by adding or removing.

In FIG. 3, 7 is a tip protection tube connected to the tip of the intermediate protection tube 6.
may be used alone or connected to the intermediate protection tube 6.

In FIG. 2, the intermediate protection pipe 6 has a cooling water connection inlet 9 and a cooling water connection outlet 1 on the upper surface of the upper flange 8.
0, a cooling water inlet 11 and a cooling water outlet 12 are provided on the side surface of the upper flange 8, and a body part 13 is provided with a cooling water inlet 11 and a cooling water outlet 12.
is divided into an inner and outer part by a partition wall 14, and the outside is configured as a cooling water outgoing path 15 and the inside is configured as a cooling water return path 16, and the cooling water connection inlet 9 and the cooling water inlet 1 are configured.
1 and a switching valve 17 at the confluence of the cooling water outgoing path 15.
In addition to incorporating the cooling water return path 16 and the cooling water outlet 1
A switching valve 18 is installed at the confluence of the cooling water connection outlet 10 and the cooling water communication inlet 20 which communicates with the cooling water outgoing path 15 and the cooling water return path 16 on the lower surface of the lower flange 19. A water communication outlet 21 is provided, and a measuring device insertion tube 22 is also provided integrally at the center of the cooling water return path 16.

Next, the tip protection tube 7 has a cooling water communication inlet 24 corresponding to the cooling water communication inlet 20 on the intermediate protection tube 6 side and a cooling water communication outlet 21 corresponding to the cooling water communication inlet 21 on the upper surface of the upper flange 23 as shown in FIG. Water communication outlet 25
In addition, a cooling water inlet 11a and an outlet 12a are provided on the side surface in the same way as the intermediate protection pipe 6, and switching valves 17a and 18a are provided at the confluence section, respectively, and the body section 26 is divided into two parts, an inner and outer part, by a partition wall 27. Partition the outside of the lever into the cooling water outgoing path 15a, and the inside into the cooling water return path 16.
a, the lower end of the partition wall 27 is opened to form a cooling water turn part 28, and the cooling water return path 1
A measuring instrument insertion tube 22a corresponding to the measuring instrument insertion tube 22 on the intermediate protective tube 6 side is integrally provided at the center of the intermediate protective tube 6a.

FIG. 3 shows an example of using the tip protection tube 7 alone, and the switching valves 17a and 18a are used as the cooling water inlets 11a and 1.
2a side, and the cooling water connection inlets 24 and 25 are closed. The cooling water circulates through an outgoing path 15a and an incoming path 16a as a cooling water circulation channel as shown by the arrow, thereby protecting the measuring instrument (suction pipe 3) in the measuring instrument insertion tube 22a from radiant heat.

Fig. 2 shows the connection state and operation of the intermediate protection tube 6 and the tip protection tube 7, and shows the connection state and operation of the intermediate protection tube 6 and the tip protection tube 7. They are coaxially connected and fixed using bolts 29. And once the connection is complete,
Cooling water is supplied through switching valves 17, 18 and 17a, 18.
A is opened as shown in the figure, and the cooling water that has entered the intermediate protection tube 6 flows in the direction of the arrow in Figure 2.

In addition, if it is to be extended further, another intermediate protection tube 6 is placed on top of the intermediate protection tube 6, and the flanges 19 and 18 of both are fixed using bolts 29. is the same as in the connection above.

Next, when shortening the protection tube 2, pull up one protection tube 6 from the blast furnace 1, similarly switch the switching valves 17 and 18 to the cooling water inlet 11 and outlet 12 sides, and then remove the bolt 29. Then, the intermediate protection tube 6 is removed, and the cooling water is circulated as it is through the cooling water inlet 11 and outlet 12. FIG. 5 is a diagram showing another embodiment in which the cooling water circulation channel of the tip protection tube 7 (and intermediate protection tube 6) is divided into left and right parts, with the left side serving as the outgoing path 15 and the right side serving as the returning path 16a.

[Effects of the present invention] As described above, the present invention provides a cooling water inlet and an outlet and a cooling water connection inlet and an outlet in the flange portions of the intermediate protection tube and the tip protection tube, and also connects these inlets and the cooling water outward and return paths. By installing a switching valve in the section, it is possible to keep the cooling water circulating even when the protection tube is being connected, so when the protection tube is extended or shortened, the There is no need to pull it out, which makes the work much easier.

Conventionally, protective tubes of different lengths are prepared, and the protective tube is selected and used according to the measurement position in the furnace. As a result, if the furnace is as large as 7 to 8 m, a corresponding space is required around the furnace. However, according to the present invention, the connection work can be performed by connecting short protective tubes one by one while they are inserted into the furnace, so there is no problem in terms of space.

[Brief explanation of drawings]

Fig. 1 is a front view of the protection tube according to the present invention attached to a furnace, Fig. 2 is a sectional view of the intermediate protection tube and tip protection tube connected, and Fig. 3 is a sectional view of the tip protection tube. Fig. 4 is a cross-sectional view taken along the line A-A', Fig. 5 is an illustration of another embodiment of the cooling water circulation channel of the protection tube, in which the forward and return paths are divided into left and right parts, and Figs. 6 and 7 are explanatory views of the conventional example. It is. 1...Furnace, 2...Protection tube, 3...Atmosphere suction tube, 6...Intermediate protection tube, 7...Tip protection tube, 9,
24... Cooling water connection inlet, 10, 25... Cooling water connection outlet, 11, 11a... Cooling water inlet, 12,
12a... Cooling water outlet, 15, 15a... Cooling water outward path, 16, 16a... Cooling water return path, 17, 1
8, 17a, 18a...Switching valve, 20...Cooling water communication inlet, 21...Cooling water communication outlet, 22...
...Measuring instrument insertion tube.

Claims (1)

[Claims for Utility Model Registration] (1) A cooling water inlet and a cooling water connection inlet following the cooling water outgoing path and a cooling water outlet and a cooling water connection in the upper flange, which constitute an outgoing and incoming path of cooling water in the body part, and a cooling water outlet and a cooling water connection inlet that follow the outgoing path of cooling water, and In addition to forming a water connection outlet, switching valves are installed in the cooling water inlet and the cooling water connection inlet, and in the cooling water outlet and the cooling water connection outlet, respectively, and a cooling water communication inlet and a cooling water communication outlet are formed in the lower flange. an intermediate protection tube that constitutes a measuring instrument insertion tube; and an outgoing and returning path for cooling water in the body, and the outgoing and returning paths communicate at the tip of the body;
The upper flange is formed with a cooling water inlet and a cooling water connection inlet following the cooling water outward path, and a cooling water outlet and a cooling water connection outlet following the return path, as well as a cooling water inlet, a cooling water connection inlet, a cooling water outlet, and a cooling water connection outlet. A protection tube for measuring the temperature of the furnace atmosphere, consisting of a tip protection tube with a switching valve installed in each, and a temperature measurement device insertion tube in the center; (2) The protective tube for measuring the temperature of the furnace atmosphere according to claim 1, which is constructed of a double-structured circulation waterway in which the outward passage of cooling water in the body is on the outside and the return passage is on the inside. (3) Utility model registration claim 1, in which the cooling water circulation channel in the fuselage is divided into left and right divided channels, one of which is configured as an outward path and the other as a return path.
A protective tube for measuring the temperature of the furnace atmosphere as described in Section 1.