JPH0449168Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a device that reliably and easily detects holes in a powder transport pipeline.

(Prior Art) For example, in a converter steel manufacturing method, a solid iron source melting method, etc., various powders are injected from the bottom of the furnace.

This powder is transported by a carrier gas through a conduit and supplied to the tuyere, but this conduit is subject to wear due to the powder. It is known that wear is particularly severe in curved pipe sections of pipes, and as the wear progresses, localized holes occur. If a hole occurs, the subsequent powder transport becomes unstable and it becomes impossible to continue the operation, so it is necessary to stop the powder transport and repair the part, or to repair the part of the pipeline that includes the hole. It is necessary to replace the part.

(Problems to be Solved by the Invention) However, conventionally there has been no technology to reliably and easily detect holes in the powder transport pipeline.

In view of the above points, this invention provides a hole detection device that can detect holes reliably and easily, and also has the function of allowing powder to be transported for a while even after a hole has occurred.

(Means for solving the problem) This invention provides an airtight box surrounding the powder transport pipeline at a location where punctures are likely to occur.
This is a perforation detection device for a powder transport pipeline, which is constructed by attaching a pressure gauge to this sealed box to detect pressure changes within the sealed box.

(Example) In FIG. 1, 1 is a powder transport pipe, 2 is a bent pipe section, and the bent pipe section 2 is connected by a flange 3 so as to be replaceable. The 20th portion of the bent pipe portion 2 is a portion that is subject to severe wear. Reference numeral 4 designates a sealed box according to this invention, which surrounds the bent pipe portion 2. Reference numeral 5 denotes a commercially available pressure gauge (pressure transducer) attached to the sealed box 4, which detects pressure changes within the sealed box 4, converts it into an electrical signal, and displays it on the meter 6.

The structure of the embodiment of this invention is as described above, and when a hole is formed in the bent pipe section 2 due to the cutting action of the powder, the pressure inside the sealed box 4 increases, and this increase in pressure is detected by the pressure gauge 5. The occurrence of a hole in the bent pipe section 2 can be detected by signal processing.

Moreover, the perforated part of the bent pipe part 2 is sealed in the box 4.
Since the powder is surrounded by a hole, the powder will not leak to the outside even after the hole is made, so the powder can continue to be transported even after the hole is made, and the curved pipe section can be closed at the timing when the powder transport is stopped. can be repaired or replaced.

(Effects of the invention) According to this invention, holes in the powder transport pipeline can be detected reliably and easily.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of an embodiment of this invention. 2... Bent pipe section of the powder transport pipeline, 4... Sealed box, 5... Pressure gauge.

Claims (1)

[Scope of utility model registration request] In areas of the powder transport pipeline where holes are likely to occur, an airtight box is provided to surround the pipe, and a pressure gauge is attached to this airtight box to detect pressure changes within the airtight box. Light detection device.