CN210243384U - High-parameter boiler pipe fitting hydrostatic test fastener - Google Patents
High-parameter boiler pipe fitting hydrostatic test fastener Download PDFInfo
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- CN210243384U CN210243384U CN201920828834.XU CN201920828834U CN210243384U CN 210243384 U CN210243384 U CN 210243384U CN 201920828834 U CN201920828834 U CN 201920828834U CN 210243384 U CN210243384 U CN 210243384U
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- gasket
- screw rod
- head screw
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Abstract
The utility model discloses a high parameter boiler pipe fitting hydrostatic test fastener, including the conical head screw rod, the cover is equipped with wedge chuck, locating rack, compresses tightly o type sealing washer, little gasket, pressure seal circle, big gasket, gland nut, compact heap, nut in proper order on the conical head screw rod, the conical head of conical head screw rod is lived in wedge chuck inner wall parcel, the locating rack is provided with the recess, compress tightly o type sealing washer, little gasket setting in the recess of locating rack, gland nut's one end is passed pressure seal circle and big gasket and is withstood little gasket, big gasket is withstood to the one end of compact heap, the nut withstands the other end of compact heap. The device effectively solves the technical problems that the sealing part leaks or the pump cannot fly out during the hydraulic test of the internal thread pipe in the high-pressure boiler. Has the characteristics of simplicity, effectiveness, safety and the like, and has wide application prospect in production practice.
Description
Technical Field
The utility model relates to a boiler pipe fitting hydrostatic test fastener especially relates to the fastener that uses when internal thread pipe hydrostatic test in the high pressure boiler.
Background
The boiler compression element is subjected to a hydrostatic test after nondestructive testing and heat treatment are qualified, and the hydrostatic test is an important process in the product manufacturing process and is used as a stopping point for quality control. In a high-pressure high-parameter boiler, in order to increase the efficiency of a heating surface, an internal thread pipe is more adopted in a membrane type water-cooled wall row, and when the internal thread pipe is used for hydraulic test, because the inner wall of the pipe is provided with a thread-shaped groove, and the hydraulic test pressure is higher, the traditional internal expansion type hydraulic tool is poor in sealing performance and easy to slide out, the inner wall of a pipe cannot be clamped, and even safety accidents can occur. The number of the pipes of the water wall row is large, and a large amount of manpower and energy are consumed by the method of welding the blank cap. It is very necessary to design an effective, simple and safe high-parameter boiler pipe fitting hydrostatic test fastening device.
Disclosure of Invention
An object of the utility model is to provide an easily grab high parameter boiler pipe fitting hydrostatic test fastener that jail pipe fitting inner wall and leakproofness are good.
In order to solve the technical problem, the utility model discloses a high parameter boiler pipe fitting hydrostatic test fastener, including the conical head screw rod, the cover is equipped with wedge chuck, locating rack, compresses tightly o type sealing washer, little gasket, pressure seal circle, big gasket, gland nut, compact heap, nut in proper order on the conical head screw rod, the conical head of conical head screw rod is lived to wedge chuck inner wall parcel, the locating rack is provided with the recess, compress tightly o type sealing washer, little gasket setting in the recess of locating rack, gland nut's one end is passed pressure seal circle and big gasket and is withstood little gasket, big gasket is withstood to the one end of compact heap, the nut withstands the other end of compact heap.
In the above technical scheme, the conical head screw rod is of a hollow structure.
In the technical scheme, the outer wall of the wedge-shaped chuck is provided with sawtooth threads.
The utility model has the advantages that: the technical problems that the sealing position leaks or the pump cannot fly out during the hydraulic pressure test of the internal thread pipe in the high-pressure boiler are solved effectively. Has the characteristics of simplicity, effectiveness, safety and the like, and has wide application prospect in production practice.
Drawings
FIG. 1 is a schematic view of a cross-sectional structure of the fastening device for a hydraulic test of a pipe fitting according to the present invention in a use state;
FIG. 2 is a schematic view of a cross-sectional structure of a hollow conical head screw rod in the fastening device for a hydraulic test of a pipe fitting of the present invention;
FIG. 3 is a schematic view of the cross-sectional structure of a non-hollow conical head screw rod in the fastening device for the hydraulic test of the pipe fitting of the present invention;
fig. 4 is the schematic view of the sectional structure of the wedge-shaped chuck in the fastening device for the hydraulic test of pipe fittings of the present invention.
Detailed Description
Referring to fig. 1, the utility model discloses an embodiment of high parameter boiler pipe fitting hydrostatic test fastener, including conical head screw rod 1, conical head screw rod 1's smooth section to conical head end between in proper order the cover be equipped with wedge chuck 10, locating rack 7, compress tightly o type sealing washer 9 and little gasket 8, wedge chuck 10 parcel live the conical head, and the outside of wedge chuck 10 sets up the sawtooth screw thread, see fig. 4, wedge chuck 10 is withstood to the one end of locating rack 7, the other end of locating rack 7 is provided with the depressed groove, compress tightly o type sealing washer 9 and little gasket 8 setting in the depressed groove, little gasket 8 is pushed down to gland nut 4's extension end, and gland sealing washer 6 and big gasket 5 suit are served in gland nut 4's extension, and gland sealing washer 6 sets up between big gasket 5 and locating rack 7. The screw thread section of the conical head screw rod 1 is provided with a nut 2, and a pressing block 3 is arranged between the nut 2 and a large gasket 5.
The utility model discloses a high parameter boiler pipe fitting hydrostatic test fastener another embodiment is with the conical head screw rod 1 replacement of above-mentioned embodiment to become the cavity conical head screw rod, see fig. 2.
When carrying out pipe fitting hydrostatic test, can select two high parameter boiler pipe fitting hydrostatic test fastener to fix respectively at the both ends of the pipe fitting that awaits measuring, hollow structure is selected to one of them high parameter boiler pipe fitting hydrostatic test fastener's conical head screw rod 1.
The fastening device with the conical head screw 1 in a hollow structure is a water inlet part, and the fastening device with the conical head screw 1 in a non-hollow structure is a stuffy head part.
During testing, the high-parameter boiler pipe fitting hydrostatic test fastening device is plugged into the internal thread pipe fitting, wherein the wedge-shaped chuck 10, the positioning frame 7, the sealing ring 6 and the large gasket 5 are directly contacted with the inner wall of the internal thread pipe fitting.
Before water is injected, the compression nut 4 is screwed, the small gasket 8 is pushed, the o-shaped sealing ring 9 is compressed, water cannot leak along the outer wall of the conical head screw rod 1 after the o-shaped sealing ring 9 is pressed and expanded, and the outer wall of the conical head screw rod 1 is sealed; and then the nut 2 is screwed to push the pressing block 3 and the large gasket 5 to press the sealing ring 6, so that water cannot leak from the inner wall of the threaded pipe after the sealing ring 6 is pressed and expanded. The fastening is mainly locked by the nut 2, and the conical head part of the conical head screw rod 1 drives the wedge-shaped chuck 10 to be tightly embedded on the inner wall of the threaded pipe without moving.
The specific operation steps are as follows:
the internal thread pipe fitting needing the hydrostatic test is stably placed in a hydrostatic field, one end of the pipe is connected with a water inlet part, the other end of the pipe is connected with a choke plug part, and a conical head screw 1 with a hollow structure is connected with a hydrostatic test pump; the screwed nut 2 and the compression nut 4 seal the internal threaded pipe against water seepage; and carrying out water pressure according to the set water pressure test pressure.
Claims (3)
1. High parameter boiler pipe fitting hydrostatic test fastener, including conical head screw rod, its characterized in that: the conical head screw rod is sequentially sleeved with a wedge-shaped chuck, a positioning frame, a compression o-shaped sealing ring, a small gasket, a compression sealing ring, a large gasket, a compression nut, a compression block and a nut, the inner wall of the wedge-shaped chuck wraps up the conical head of the conical head screw rod, the positioning frame is provided with a groove, the compression o-shaped sealing ring and the small gasket are arranged in the groove of the positioning frame, one end of the compression nut penetrates through the compression sealing ring and the large gasket to support the small gasket, one end of the compression block supports the large gasket, and the nut supports the other end of the compression block.
2. The high parameter boiler tube hydrostatic test fastening device of claim 1, wherein: the conical head screw rod is of a hollow structure.
3. The high parameter boiler tube hydrostatic test fastening device of claim 1 or 2, characterized in that: the outer wall of the wedge-shaped chuck is provided with sawtooth threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920828834.XU CN210243384U (en) | 2019-06-03 | 2019-06-03 | High-parameter boiler pipe fitting hydrostatic test fastener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920828834.XU CN210243384U (en) | 2019-06-03 | 2019-06-03 | High-parameter boiler pipe fitting hydrostatic test fastener |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210243384U true CN210243384U (en) | 2020-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920828834.XU Active CN210243384U (en) | 2019-06-03 | 2019-06-03 | High-parameter boiler pipe fitting hydrostatic test fastener |
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| Country | Link |
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| CN (1) | CN210243384U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112161748A (en) * | 2020-09-29 | 2021-01-01 | 无锡华光环保能源集团股份有限公司 | Three-jaw outer clamp end face sealing type hydraulic sealing device and test method |
| CN112730028A (en) * | 2020-12-22 | 2021-04-30 | 江苏东九重工股份有限公司 | High-parameter boiler pressure vessel pipe fitting hydrostatic test fastening device and method thereof |
-
2019
- 2019-06-03 CN CN201920828834.XU patent/CN210243384U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112161748A (en) * | 2020-09-29 | 2021-01-01 | 无锡华光环保能源集团股份有限公司 | Three-jaw outer clamp end face sealing type hydraulic sealing device and test method |
| CN112161748B (en) * | 2020-09-29 | 2022-12-13 | 无锡华光环保能源集团股份有限公司 | Three-jaw outer clamp end face sealing type hydraulic sealing device and test method |
| CN112730028A (en) * | 2020-12-22 | 2021-04-30 | 江苏东九重工股份有限公司 | High-parameter boiler pressure vessel pipe fitting hydrostatic test fastening device and method thereof |
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Address after: 226014 No.133, Zhongxiu Middle Road, Chongchuan District, Nantong City, Jiangsu Province Patentee after: Nantong Wanda Energy Power Technology Co.,Ltd. Address before: 226014 No.133, Zhongxiu Middle Road, Chongchuan District, Nantong City, Jiangsu Province Patentee before: NANTONG WANDA BOILER Co.,Ltd. |