CN-121977199-A - Cleaning device for throttling component of high-temperature gas cooled reactor steam generator

CN121977199ACN 121977199 ACN121977199 ACN 121977199ACN-121977199-A

Abstract

The disclosure relates to the technical field of cleaning of throttling components of high-temperature gas cooled reactor steam generators, and provides a cleaning device for a throttling component of a high-temperature gas cooled reactor steam generator. The cleaning device comprises a water tank, a cleaning pipe, a direct-injection needle and a side-injection needle, wherein the water tank is used for containing cleaning liquid, the cleaning pipe comprises a first end and a second end which are opposite, the first end is communicated with a containing cavity, the second end is provided with a first connecting head, the direct-injection needle comprises a third end and a fourth end which are opposite, the third end is provided with a second connecting head, the fourth end is provided with a top nozzle with a top spray hole, the top spray hole is communicated with the inside of the direct-injection needle, the second connecting head is detachably connected with the first connecting head, the side-injection needle comprises a fifth end and a sixth end which are opposite, the fifth end is provided with a third connecting head, the side wall of the side-injection needle is provided with a side spray hole, and the third connecting head is detachably connected with the first connecting head and rotates relative to the first connecting head. According to the cleaning device provided by the disclosure, the cleaning of the throttling assembly can be well realized.

Inventors

WANG MIAOMIAO
YANG PENG
LIU BAOKUN
ZHANG BAOJUN
WEI WENBIN
CHENG BAOLIANG
CHEN JUNRONG
MA XIQIANG
YANG DUO
HUANG PENG
LI KANG

Assignees

华能核能技术研究院有限公司
国核电站运行服务技术有限公司

Dates

Publication Date: 20260505
Application Date: 20251224

Claims (10)

1. The utility model provides a high temperature gas cooled reactor steam generator throttling assembly belt cleaning device which characterized in that includes: A water tank defining a receiving cavity for receiving a cleaning liquid; the cleaning pipe comprises a first end and a second end which are opposite to each other, the first end is communicated with the accommodating cavity, and the second end is provided with a first connecting head; The direct injection needle comprises a third end and a fourth end which are opposite, the third end is provided with a second connector, the fourth end is provided with a top nozzle with a top spray hole, the top spray hole penetrates through the top nozzle in the extending direction of the direct injection needle and is communicated with the inside of the direct injection needle, and the second connector can be detachably connected with the first connector; The side spray needle comprises a fifth end and a sixth end which are opposite, the fifth end is provided with a third connector, the side wall of the side spray needle is provided with a side spray hole, and the third connector can be detachably connected with the first connector and can rotate relative to the first connector; wherein, direct injection needle with the side spray needle can both stretch into the throttle subassembly.
2. The cleaning device for a throttling assembly of a high-temperature gas cooled reactor steam generator according to claim 1, wherein a top spraying groove is formed in the peripheral wall of the top spraying hole, and penetrates through the end face of one side, away from the direct spraying needle, of the top spraying nozzle.
3. The cleaning device for a throttling assembly of a high temperature gas cooled reactor steam generator according to claim 2, wherein the number of the top spraying grooves is plural, and the plural top spraying grooves are uniformly arranged at intervals in the circumferential direction of the top spraying hole.
4. The high temperature gas cooled reactor steam generator choke assembly cleaning device according to claim 2, characterized in that the bottom wall of the top-spray groove extends obliquely toward the radially outer side of the top nozzle hole in the direction of the third end toward the fourth end.
5. The high temperature gas cooled reactor steam generator throttling assembly cleaning device of claim 1, wherein the cross-sectional area of the top nozzle decreases in a direction of the third end toward the fourth end.
6. The high temperature gas cooled reactor steam generator choke assembly cleaning apparatus of claim 1, wherein the side nozzle includes a first side nozzle and a second side nozzle, the first side nozzle and the second side nozzle being spaced apart in an extension direction of the side nozzle.
7. The high temperature gas cooled reactor steam generator choke assembly cleaning apparatus of claim 6, wherein the first side nozzle holes and the second side nozzle holes are spaced apart in a circumferential direction of the side nozzle needle.
8. The high temperature gas cooled reactor steam generator throttling assembly cleaning device of claim 6, wherein the first side orifice comprises a first sub-orifice and a second sub-orifice, the first sub-orifice and the second sub-orifice being symmetrically disposed about a central axis of the side nozzle needle.
9. The high temperature gas cooled reactor steam generator choke assembly cleaning device of claim 6, wherein the side nozzle further includes a third side nozzle located between the first side nozzle and the second side nozzle.
10. The high temperature gas cooled reactor steam generator throttling assembly cleaning apparatus of claim 1, further comprising: the first limiting sliding sleeve is slidably sleeved on the direct-injection needle; and/or the second limiting sliding sleeve is slidably sleeved on the side spray needle.

Description

Cleaning device for throttling component of high-temperature gas cooled reactor steam generator Technical Field The disclosure relates to the technical field of cleaning of throttling components of high-temperature gas cooled reactor steam generators, in particular to a cleaning device for a throttling component of a high-temperature gas cooled reactor steam generator. Background In the operation of the high temperature gas cooled reactor, the water of the steam generator reacts with the heat transfer tube, and corrosion products and impurities generated by the reaction adhere to the inner wall of the heat transfer tube, the inner wall of the throttling assembly and the throttling hole to form blockage and even foreign matters. The throttle assembly is used as an important pipeline of the nuclear power plant, and foreign matters exist in the throttle assembly to influence the heat exchange efficiency of the steam generator in the whole operation period, so that the throttle assembly of the steam generator is cleaned in each overhaul period of the high-temperature gas cooled reactor nuclear power plant. Because of the small orifice size of the orifice of the throttling assembly, no device for cleaning the throttling assembly is currently known. Disclosure of Invention In order to solve the technical problems or at least partially solve the technical problems, the invention provides a cleaning device for a throttling component of a high-temperature gas cooled reactor steam generator. The application provides a cleaning device for a throttling component of a high-temperature gas cooled reactor steam generator, which comprises a water tank, a cleaning pipe, a direct injection needle, a top nozzle, a side injection needle and a throttling component, wherein the water tank is used for limiting a containing cavity and used for containing cleaning liquid, the cleaning pipe comprises a first end and a second end which are opposite, the first end is communicated with the containing cavity, the second end is provided with a first connecting head, the direct injection needle comprises a third end and a fourth end which are opposite, the third end is provided with a second connecting head, the fourth end is provided with a top nozzle, the top nozzle penetrates through the top nozzle in the extending direction of the direct injection needle and is communicated with the inside of the direct injection needle, the second connecting head can be detachably connected with the first connecting head, the side injection needle comprises a fifth end and a sixth end which are opposite, the side injection needle is provided with a third connecting head, the side nozzle is arranged on the side wall of the side injection needle, the third connecting head can be detachably connected with the first connecting head, and the side injection needle can rotate relative to the first connecting head and the direct injection needle can rotate relative to the first connecting head, and the throttling component can be inserted into the direct injection needle. According to the cleaning device for the throttling assembly of the high-temperature gas cooled reactor steam generator, provided by the embodiment of the application, an operator can firstly connect the first connector with the second connector, sequentially stretch the direct injection needle into the first chamber, the second chamber and the third chamber of the throttling assembly, flush the throttling hole, the second throttling hole, the end face of the third throttling hole and the end face of the third throttling hole through the top spraying hole on the top spraying head, and then detach the direct injection needle through the detachable connection of the second connector with the first connector. And then the third connector of the side spray needle is connected with the first connector, the side spray needle sequentially stretches into the first chamber, the second chamber and the third chamber, and the inner walls of the first chamber, the second chamber and the third chamber are respectively flushed through the side spray hole of the side spray needle and the rotation of the side spray needle. From this, through the washing with the throttle subassembly break up into directly spout and wash to the downthehole and the terminal surface of first orifice, second orifice and third orifice, spout the inner wall to first cavity, second cavity and third cavity through the side and wash, and then reach the effect to the inside washing of throttle subassembly. In one possible implementation manner of the application, a top spraying groove is formed in the peripheral wall of the top spraying hole, and penetrates through one side end face of the top spraying nozzle, which faces away from the direct spraying needle. In one possible implementation manner of the present application, the number of the top spraying grooves is plural, and the plural top spraying grooves are uniformly spaced in t