Heat preservation unit for surge pipe instrument

Abstract

The utility model relates to the technical field of nuclear power equipment heat preservation, in particular to a heat preservation unit for a surge pipe instrument, which comprises a heat preservation unit main body, a first heat preservation unit, a second heat preservation unit, a spring supporting piece and a cover plate, a section-shaped channel is formed in the connecting position of the side wall of the second heat preservation unit and the side wall of the second heat preservation unit, the first heat preservation unit and the second heat preservation unit are used for keeping a detection element of the temperature detection instrument warm, and after the position of the temperature detection instrument is installed and adjusted on the heat preservation unit body, the cover plate blocks a reserved hole for the temperature detection instrument. Heat leakage is prevented, heat emitted by the outer surface of the surge pipe is effectively isolated, and meanwhile the problem that the temperature detection instrument extends out at different angles can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of thermal insulation of nuclear power equipment, in particular to a thermal insulation unit for a surge tube instrument. Background Art

[0002] At present, there are only 1 to 2 temperature detection instruments around the surge tube of existing nuclear power units. The CAP1400 series is the first domestically independently innovated nuclear power unit. It is the first of its kind in China. There are 5 temperature detection instruments within the 180° circumference of the surge tube. Therefore, there is no relevant design for the insulation unit for the surge tube instrument to refer to.

[0003] Since the CAP1400 series nuclear power units are an indispensable test and verification platform for the innovative development of the third-generation nuclear power technology, relevant experience needs to be provided for the subsequent construction of this series of nuclear power units, so there are a large number of temperature detection instruments outside the surge tube. In order to avoid the interference of ambient temperature and ensure the stability of the detection data, it is necessary to design a thermal insulation unit for the surge tube instrument to effectively isolate the heat emitted from the outer surface of the surge tube. Utility Model Content

[0004] The utility model aims to provide a heat preservation unit for a surge tube instrument, so as to solve the problem that the accuracy of the surge tube instrument is affected due to the interference of the ambient temperature.

[0005] The utility model provides a heat preservation unit for a wave tube instrument, comprising a heat preservation unit body, a first heat preservation unit, a second heat preservation unit, a spring support and a cover plate;

[0006] A first heat preservation unit is connected to the second heat preservation unit and is installed on a side wall of the heat preservation unit body;

[0007] The second heat preservation unit, the side wall of the second heat preservation unit and the side wall of the second heat preservation unit are connected to each other to form a section-shaped channel, and the inclination angle of the section-shaped channel is inclined from the second heat preservation unit side to the first heat preservation unit side, and the section-shaped channel is used for the transmission cable of the temperature detection instrument to pass through;

[0008] The first heat preservation unit and the second heat preservation unit are used to keep the detection element of the temperature detection instrument warm;

[0009] A spring support member, the spring support member is welded to both ends of the inner wall of the first heat preservation unit and the second heat preservation unit, and the detection element of the temperature detection instrument is prevented from contacting with the first heat preservation unit and the second heat preservation unit by adjusting the height of the spring support member;

[0010] The cover plate is riveted on one side to the first insulation unit and the two ends of the protruding holes on the outer wall of the insulation unit. After the position of the temperature detection instrument is installed and adjusted on the insulation unit body, the cover plate can block the hole reserved for the temperature detection instrument to prevent heat leakage.

[0011] Furthermore, the present invention provides a heat preservation unit for a surge tube instrument, wherein a cable conduit matching the section-shaped channel is arranged in the heat preservation unit body and used for the transmission cable of the temperature detection instrument to pass through.

[0012] Furthermore, the present invention provides a heat preservation unit for a surge tube instrument, wherein the side wall section of the first heat preservation unit is concave in the middle, and the side wall section of the second heat preservation unit is convex in the middle, so as to avoid direct heat dissipation.

[0013] The utility model has the following beneficial effects: the utility model provides a heat preservation unit for a wave tube instrument, comprising a heat preservation unit body, a first heat preservation unit, a second heat preservation unit, a spring support and a cover plate, the first heat preservation unit is connected with the second heat preservation unit and installed on the side wall of the heat preservation unit body, the second heat preservation unit, the side wall of the second heat preservation unit and the side wall of the second heat preservation unit are connected to each other to form a section-shaped channel, and the inclination angle of the section-shaped channel is inclined from the second heat preservation unit side to the first heat preservation unit side, the section-shaped channel is used for the transmission cable of the temperature detection instrument to pass through, the first heat preservation unit and the second heat preservation unit are used for the temperature detection The detection element of the instrument is kept warm, and a spring support is welded to both ends of the inner wall of the first insulation unit and the second insulation unit. The detection element of the temperature detection instrument is prevented from contacting the first insulation unit and the second insulation unit by adjusting the height of the spring support. The cover plate is riveted on one side to both ends of the extension holes of the outer wall of the first insulation unit and the insulation unit. After the position of the temperature detection instrument is installed and adjusted on the insulation unit body, the cover plate seals the hole reserved for the temperature detection instrument to prevent heat leakage. While effectively isolating the heat emitted from the outer surface of the surge tube, it can cope with the problem of different extension angles of the temperature detection instrument. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 This is a schematic diagram of the overall cross-sectional structure provided by the utility model.

[0016] Illustration: 1-first heat preservation unit, 2-second heat preservation unit, 3-spring support, 4-cover plate. DETAILED DESCRIPTION

[0017] The embodiment of the utility model provides a heat preservation unit for a surge tube instrument. The main contents of the utility model are as follows:

[0018] The cross-section of the first heat preservation unit 1 and the second heat preservation unit 2 is X°, the cross-section of the first heat preservation unit 1 is concave in the middle, and the cross-section of the second heat preservation unit 2 is convex in the middle, so as to avoid direct heat leakage;

[0019] By adjusting the height of the spring support 3, the temperature detection instrument is prevented from contacting the first heat preservation unit 1 and the second heat preservation unit 2;

[0020] The reserved holes on the first heat-insulating unit 1 and the second heat-insulating unit 2 are blocked by rotating the cover plate 4 .

[0021] The utility model provides an insulation unit for a surge tube instrument, wherein the cross-section of the first insulation unit 1 and the second insulation unit 2 is X°, the middle of the cross-section of the first insulation unit 1 is concave, and the middle of the second insulation unit 2 is convex, and the cross-section angle X° can be determined according to the maximum bending angle of the transmission cable of the temperature detection instrument. The spring support 3 is welded to both ends of the inner wall of the first insulation unit 1 and the second insulation unit 2, and the height of the spring support 3 can be adjusted to ensure that the detection element of the temperature detection instrument is not in contact with the insulation unit. The cover plate 4 is riveted on one side to both ends of the extension hole of the outer wall of the first insulation unit 1 and the insulation unit 2, and can be rotated after the position adjustment of the insulation unit and the temperature detection instrument is completed, so as to seal the reserved hole for the temperature detection instrument and prevent heat leakage.

[0022] The utility model provides a heat preservation unit for the wave tube instrument, which has been formally used for the outside of the wave tube of the CAP1400 series nuclear power unit. This technical product is used in the nuclear power equipment insulation industry and is installed outside the multi-instrument position of the wave tube of the CAP1400 series nuclear power unit.

[0023] The prior art does not have a heat preservation unit that meets the above requirements. The present invention can meet the above design conditions, and the summary is as follows: according to the maximum bending angle of the data transmission cable of the temperature detection instrument, the section between the heat preservation units is determined to be X°, and the section is concave and convex to avoid direct heat leakage; the gap between the heat preservation unit and the surge tube can be adjusted according to the specifications of the temperature detection instrument to avoid direct contact with the temperature detection instrument; by rotating the cover plate, the heat preservation unit is blocked to reserve the hole for the data transmission cable of the temperature detection instrument.

[0024] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A heat preservation unit for a surge tube instrument, characterized in that: It comprises a heat preservation unit body, a first heat preservation unit (1), a second heat preservation unit (2), a spring support member (3) and a cover plate (4); A first heat preservation unit (1) is connected to the second heat preservation unit (2) and is installed on the side wall of the heat preservation unit body; A second heat preservation unit (2), wherein the connection between the side wall of the second heat preservation unit (2) and the side wall of the second heat preservation unit (2) presents a section-shaped channel, and the inclination angle of the section-shaped channel is inclined from the second heat preservation unit (2) side to the first heat preservation unit (1) side, and the section-shaped channel is used for the transmission cable of the temperature detection instrument to pass through; The first heat preservation unit (1) and the second heat preservation unit (2) are used to keep the detection element of the temperature detection instrument warm; A spring support member (3), the spring support member (3) being welded to both ends of the inner walls of the first heat-insulating unit (1) and the second heat-insulating unit (2), and the detection element of the temperature detection instrument is prevented from contacting with the first heat-insulating unit (1) and the second heat-insulating unit (2) by adjusting the height of the spring support member (3); The cover plate (4) is riveted on one side to the two ends of the extension holes on the outer wall of the first heat preservation unit (1) and the heat preservation unit (2). After the position of the temperature detection instrument is installed and adjusted on the heat preservation unit body, the cover plate (4) can block the hole reserved for the temperature detection instrument to prevent heat leakage.

2. The heat preservation unit for a surge tube instrument according to claim 1, characterized in that: A cable conduit matching the section-shaped channel is arranged in the main body of the heat preservation unit and is used for the transmission cable of the temperature detection instrument to pass through.

3. The heat preservation unit for a surge tube instrument according to claim 1, characterized in that: The middle of the side wall section of the first heat-insulating unit (1) is concave, and the middle of the side wall section of the second heat-insulating unit (2) is convex, so as to avoid direct heat loss.

Images