JPH083425B2 - Heat pipe heat insulation device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to, for example, the temperature of a fluid flow rate, pressure, liquid level detection unit and / or the temperature of a connection unit connecting the detection unit and a mother pipe or a mother body as described above. The present invention relates to a heat pipe heat insulating device applied when it is necessary to keep the temperature of the mother pipe or the mother body to be uniform.

[Conventional technology]

The temperature of the conventional fluid flow rate, pressure, liquid level, etc., and / or the temperature of the connection between the detection section and the mother tube through which the fluid flows or the body in which the fluid is stored is the same as the temperature of the above-mentioned mother tube or the body. The device for keeping at is shown in Figures 3, 4, 5 and 6.

The device shown in FIG. 3 is for applying an electric trace to the liquid level detection unit attached to the base body. In this case,
The electric trace element 26 is taken out from the power supply connector 27 and wound around the liquid level detection unit 2 and around the connection unit 3 between the mother body 1 and the liquid level detection unit 2, and the heat insulation material 4 is used to keep it warm. The outside is covered with a heat insulating cover 5, and the electric trace element 26 is energized to keep the heat.

The device shown in FIG. 4 is for applying an electric trace to the pressure detecting portion attached to the mother pipe. In this case,
The electric trace element 26 is taken out from the power supply connector 27, and along the conduit 13 for transmitting the pressure from the mother pipe 11 to the signal transmitter 12 for pressure detection, the heat insulating material 14 is provided around the conduit 13 and the electric trace element 26. Is covered with a heat insulating cover 15, and the electric trace element 26 is energized to keep the heat.

The apparatus shown in FIG. 5 is for applying steam tracing to the liquid level detection unit attached to the mother body, and in this case, to the liquid level detection unit 2 and the connection unit 3 between the mother body 1 and the liquid level detection unit 2. Wrap the steam trace tube 36, keep it warm with the heat insulating material 4, and cover the outside with the heat insulating cover 5,
Send steam from steam inlet 37, steam outlet
It releases from 38 and keeps it warm.

The apparatus shown in FIG. 6 is one in which steam tracing is applied to the pressure detecting section attached to the mother pipe. In this case, the steam tracing pipe 36 applies pressure from the mother pipe 11 to the signal transmitter 12 for pressure detection. Wrap it around the conduit 13 that transmits it, keep it warm with the heat insulating material 4, cover the heat insulating material 4 with the heat insulating cover 5, and send steam from the steam inlet 37 and discharge it from the steam outlet 38 to keep it warm. are doing.

[Problems to be solved by the invention]

In the above-mentioned conventional device, the detection part and the connection part are (1) when the electric trace is installed, the temperature is close to the temperature of the electric trace element, and when the steam trace is installed, the temperature is close to the temperature of the steam. It is difficult to keep the temperature of the joint and connection at the same temperature as the mother pipe or body, and (2) consumes electricity in the case of electric trace construction and steam in the case of steam trace construction, and further 3) When constructing an electric trace, the power supply equipment,
There were problems such as the need for a steam source when constructing a steam trace.

The present invention is intended to solve the above problems.

[Means for solving problems]

In the present invention, one end of the heat pipe is brought into close contact with the outer surface of the mother pipe through which the fluid flows or the fluid is stored, and the other end is used to detect the flow rate, pressure, liquid level, etc. of the above-mentioned mother pipe or the mother fluid. And / or the connecting part for connecting the detecting part and / or the detecting part to the mother tube or the mother body, and a heat insulating material is attached to the outside thereof.

[Action]

In the above, since the heat pipe is closely attached, if there is a temperature difference between the above-mentioned mother tube or mother and the above-mentioned detecting section and / or connecting section, heat is transferred and both are always kept at a substantially uniform temperature. To be kept.

As a result, the mother tube or the mother body and the detecting portion and / or the connecting portion are always kept at a substantially uniform temperature, and the heat source for keeping the heat required in the conventional device is not required.

[Embodiment] An embodiment of the present invention is shown in FIG. 1 and another embodiment is shown in FIG.

In one embodiment of the present invention shown in FIG. 1, the heat receiving portion 7 at one end of the heat pipe 6 is brought into close contact with the mother body 1, and the other end of the heat pipe is connected to the liquid level detecting unit 2 and the liquid level detecting unit 2. Wrap around a connecting portion 3 connected to the mother body 1, cover a part of the mother body 1 to which the heat pipe is closely adhered, the connecting portion 3 and the liquid level detecting portion 2 with a heat insulating material 4, respectively, and further keep the heat insulating material 4 warm. Wrap with cover 5.

As described above, the heat of the mother body 1 is absorbed by the heat receiving portion 7 of the heat pipe 6 and is released by the connecting portion 3 and the liquid surface detecting portion 2 described above, so that the temperatures of the liquid surface detecting portion 2 and the connecting portion 3 are almost the same as those of the mother body 1.ヾ Can maintain the same temperature.

In another embodiment shown in FIG. 2, the heat receiving portion 7 at one end of the heat pipe 6 is closely attached to the mother pipe 11 and the other end of the heat pipe 6 is a conduit for guiding pressure from the mother pipe 11 to the signal transmitter 12. A heat-insulating material 18 is wrapped around the heat pipe 6, and the heat-insulating material 18 covers the mother pipe 11 of the heat pipe 6 and the heat-insulating material 14 covers the conduit 13 around which the heat pipe is wound.
8 is wrapped with heat insulating covers 15 and 19, respectively.

By the above, the heat of the mother pipe 11 is absorbed by the heat receiving portion 7 of the heat pipe 6 and is released by the conduit 13, so that the temperature of the conduit 13 can be maintained at substantially the same temperature as the mother pipe 11.

As described above, by using the heat pipe to keep the temperature of the detecting part and the mother tube or the connecting part of the mother and the detecting part warm, the temperature of the detecting part and the connecting part can be 1 to 1
It is now possible to maintain a temperature difference of about 2 ° C., the power supply and steam source for heat retention required by the conventional method are no longer necessary, and it is no longer necessary to consume electricity or steam.

〔The invention's effect〕

By bringing one end of the heat pipe into close contact with the mother tube or the mother body and the other end in close contact with the detection unit and / or the connection unit, the temperature of the detection unit and / or the connection unit can be made almost uniform with the temperature of the mother pipe or the mother body. It is now possible to keep it, the power source and the steam source for the heat retention required by the conventional device are not required, and it is not necessary to consume electricity or steam.

[Brief description of drawings]

FIG. 1 is an illustration of an embodiment of the present invention, FIG. 2 is an illustration of another embodiment of the present invention, and FIGS. 3, 4, 5 and 6 are illustrations of a conventional device. 1 ... Mother, 2 ... Liquid level detection unit, 3 ... Connection between mother and liquid level detection unit, 4,14 ... Heat insulation material, 5,15 ... Heat insulation cover, 6
...... Heat pipe, 7 ...... Heat pipe heat receiving part, 11 ...
… Mother tube, 12 …… Signal transmitter, 13 …… Conduit, 18 …… Mother tube heat insulating material, 19 …… Mother tube heat insulating cover, 26 …… Electrical trace element, 27 …… Power supply connector, 36… … Steam tracing pipe, 37 …… Steam inlet, 38 …… Steam outlet.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display location G12B 7/00 6947-2F

Claims (1)

[Claims] 1. A heat pipe has one end closely attached to an outer surface of a mother pipe in which a fluid flows or a body in which the fluid is stored, and the other end detects the flow rate, pressure, liquid level, etc. of the fluid in the mother pipe or the mother. And / or a connecting portion for connecting the detecting portion and / or the detecting portion to the mother tube or the mother body, and a heat insulating material is attached to the outside thereof.