JPS5546129A - Detecting method of propriety of freezing tube - Google Patents
Detecting method of propriety of freezing tubeInfo
- Publication number
- JPS5546129A JPS5546129A JP11928778A JP11928778A JPS5546129A JP S5546129 A JPS5546129 A JP S5546129A JP 11928778 A JP11928778 A JP 11928778A JP 11928778 A JP11928778 A JP 11928778A JP S5546129 A JPS5546129 A JP S5546129A
- Authority
- JP
- Japan
- Prior art keywords
- inner tube
- coolant
- tube
- flow
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
PURPOSE: To detect the presence of defective parts of freezing tubes burried under the ground, by inversely circulating the coolant through mounting the stop valve at the lower end of the inner tube and measuring the flow and pressure.
CONSTITUTION: The inner tube 2 is inserted in the external tube 1 having bottom, and the cap 3 is fixed at the upper end of the external tube 1 with welding. The coolant flow section 4 is present at the cap 3 and the freezing tube is constituted with those. The stop valve 5 is mounted at the lower end of the inner tube 2 and the spherical valve 6 is provided. The flow meter 7 and the pressure gauge 8 are provided. When the inner tube 2 is detected for damaged part or improper welding part, the coolant is fed in the external tube 1. If no defective part is present, the spherical valve 6 is lifted up with the supply pressure of the coolant to block the lower end of the inner tube 2. The coolant does not flow in the inner tube 2, the flow meter shows a small value and the pressure gauge indicates a large value. Further, if defective parts are present, the coolant 2 invades in the inner tube 2 to cause inverse circulation, and no change in the flow meter and the pressure is not risen.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11928778A JPS5546129A (en) | 1978-09-29 | 1978-09-29 | Detecting method of propriety of freezing tube |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11928778A JPS5546129A (en) | 1978-09-29 | 1978-09-29 | Detecting method of propriety of freezing tube |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5546129A true JPS5546129A (en) | 1980-03-31 |
JPS5758616B2 JPS5758616B2 (en) | 1982-12-10 |
Family
ID=14757655
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11928778A Granted JPS5546129A (en) | 1978-09-29 | 1978-09-29 | Detecting method of propriety of freezing tube |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5546129A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4508057A (en) * | 1983-09-16 | 1985-04-02 | Tokyu Musashi Mfg. Co., Ltd. | Algal culturing reef unit, artificial reef unit and artificial culturing and fishing field unit |
-
1978
- 1978-09-29 JP JP11928778A patent/JPS5546129A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4508057A (en) * | 1983-09-16 | 1985-04-02 | Tokyu Musashi Mfg. Co., Ltd. | Algal culturing reef unit, artificial reef unit and artificial culturing and fishing field unit |
Also Published As
Publication number | Publication date |
---|---|
JPS5758616B2 (en) | 1982-12-10 |
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