CN109356926B - Retaining type connecting device and using method - Google Patents
Retaining type connecting device and using method Download PDFInfo
- Publication number
- CN109356926B CN109356926B CN201811250144.7A CN201811250144A CN109356926B CN 109356926 B CN109356926 B CN 109356926B CN 201811250144 A CN201811250144 A CN 201811250144A CN 109356926 B CN109356926 B CN 109356926B
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- Prior art keywords
- full
- thread stud
- inserting strip
- hole
- hexagon nut
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- 238000000034 method Methods 0.000 title claims abstract description 32
- 239000002184 metal Substances 0.000 claims abstract description 39
- 238000005192 partition Methods 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 238000003466 welding Methods 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/02—Locking of screws, bolts or nuts in which the locking takes place after screwing down
- F16B39/04—Locking of screws, bolts or nuts in which the locking takes place after screwing down with a member penetrating the screw-threaded surface of at least one part, e.g. a pin, a wedge, cotter-pin, screw
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Clamps And Clips (AREA)
- Gasket Seals (AREA)
Abstract
The invention discloses a backstop type connecting device and a using method, particularly belongs to the application field of studs and nuts, and aims to solve the problems that in the prior art, after the studs and the nuts are fixed, the studs and the nuts are easy to loosen in the operation process, the operation safety of a system is influenced, and the traditional welding backstop construction is difficult, wherein the backstop type connecting device mainly comprises: the full-thread stud comprises a full-thread stud, a gasket, a hexagon nut and a metal plug-in, wherein a through hole is formed in one end of the full-thread stud, the metal plug-in passes through the through hole, one end of the metal plug-in which passes through two ends of the through hole is bent and wound on the full-thread stud, the other end of the metal plug-in is bent by a certain angle alpha and then clamped on the edge of a partition plate, and the hexagon nut and the gasket are sequentially sleeved on the full-thread stud from the other end.
Description
Technical Field
The invention belongs to the application field of studs and nuts, and particularly relates to a backstop type connecting device and a using method thereof.
Background
At present, a high-pressure heater is widely applied to a heat recovery system of a large thermal power generating unit and a nuclear power generating unit. A partition board on a high-pressure heater water chamber access hole is connected in a stud and nut mode, in order to prevent studs and nuts from loosening in the operation process of equipment, a check washer is adopted to be welded with the studs and the nuts, and meanwhile, the check washer is bent and then clamped at the edge of a stud fixing part partition board.
Disclosure of Invention
The invention provides a non-return connecting device and a using method thereof, aiming at solving the problems that in the prior art, after a stud and a nut are fixed, the stud and the nut are easy to loosen in the operation process, so that the operation safety of a system is influenced, and the traditional welding non-return construction is difficult.
The invention discloses a backstop type connecting device, which mainly comprises the following structures:
it includes full thread double-screw bolt 1, packing ring 2, hexagon nut 3 and metal cutting 4, its characterized in that: one end of the full-thread stud 1 is provided with a through hole 1-1, the metal inserting strip 4 penetrates through the through hole 1-1, the lengths of the metal inserting strip 4 exposed outside two ends of the through hole 1-1 are respectively L1 and L2, one end of the metal inserting strip 4 is wound on the full-thread stud 1 along the circumferential direction of the full-thread stud 1, the other end of the metal inserting strip 4 is bent to the outer side of the edge of the connecting piece along the extending direction of the nut and is attached to the edge of the connecting piece, and the hexagon nut 3 and the washer 2 are sequentially sleeved on the full-thread stud 1 from the other end of the full-thread.
The invention discloses a using method of a backstop type connecting device, which mainly adopts the following technical scheme:
the method comprises the following steps: selecting a full-thread stud 1, a gasket and a hexagon nut 3 matched with the full-thread stud 2 and the gasket which are arranged on a partition plate on an access hole of a water chamber of a high-pressure heater;
step two: connecting the selected full-thread stud 1, a washer 2 and a hexagon nut 3 matched with the washer to a partition plate on an access hole of a water chamber of the high-pressure heater, pre-tightening the full-thread stud 1 and the hexagon nut 3 matched with the full-thread stud, and marking the bottom of one end of the full-thread stud 1 exposed outside the hexagon nut 3;
step three: the pre-tightened full-thread stud 1, a washer 2 and a hexagon nut 3 are disassembled from a partition plate on an access hole of a water chamber of the high-pressure heater, and a through hole 1-1 vertical to the axis of the full-thread stud 1 is arranged at a marked position of the full-thread stud 1;
step four: the full-thread stud 1 and the hexagon nut 3 are installed on the partition plate on the access hole of the water chamber of the high-pressure heater again, and the full-thread stud 1 and the hexagon nut 3 matched with the full-thread stud are screwed tightly;
step five: and (3) enabling the metal inserting strip 4 to penetrate through the through hole 1-1, wherein the lengths of the metal inserting strip 4 exposed outside two ends of the through hole 1-1 are L1 and L2 respectively, one end of the metal inserting strip 4 is wound on the full-thread stud 1 along the circumferential direction of the full-thread stud 1, and the other end of the metal inserting strip 4 is bent to the outer side of the edge of the connecting piece along the extending direction of the nut and is attached to the edge of the connecting piece.
Compared with the prior art, the invention has the following beneficial effects:
firstly, the technical method can effectively prevent the fastened stud and nut from loosening in the operation process.
The technical method does not need to weld the nut and the stud, is simpler and more convenient compared with a method for stopping the backing by utilizing a welding mode in the prior art, and greatly reduces the operation difficulty.
Thirdly, the technical method can ensure that the regenerative systems of the large thermal power generating units and the nuclear power generating units can run more safely.
The device is simple in structure, and is easier to realize compared with a traditional method for stopping in a welding mode, the installation time is saved by at least 50%, and the cost is saved by at least 70%.
Drawings
FIG. 1 is a front view of the anti-backup coupling device of the present invention in an operational state;
FIG. 2 is a top view of the anti-backup coupling device of the present invention in an operational state;
fig. 3 is a front view of the anti-backup connecting device of the present invention in a normal state.
Detailed Description
The first embodiment is as follows: the backstop type connecting device described in the embodiment with reference to fig. 1 and 3 comprises a full-thread stud 1, a washer 2, a hexagon nut 3 and a metal insert 4, and is characterized in that: one end of the full-thread stud 1 is provided with a through hole 1-1, the metal inserting strip 4 penetrates through the through hole 1-1, the lengths of the metal inserting strip 4 exposed outside two ends of the through hole 1-1 are respectively L1 and L2, one end of the metal inserting strip 4 is wound on the full-thread stud 1 along the circumferential direction of the full-thread stud 1, the other end of the metal inserting strip 4 is bent to the outer side of the edge of the connecting piece along the extending direction of the nut and is attached to the edge of the connecting piece, and the hexagon nut 3 and the washer 2 are sequentially sleeved on the full-thread stud 1 from the other end of the full-thread.
The second embodiment is as follows: referring to fig. 1 and 3, the length L1 of the metal slip 4 exposed to the outside of the through hole 1-1 in the present embodiment is half of the circumference of the end face of the full-thread stud 1. Other undisclosed techniques and steps are the same as those described in the first embodiment.
The third concrete implementation mode: referring to fig. 1 and 3, the length L2 of the metal cutting 4 exposed outside the through hole 1-1 is twice the distance from the full-thread stud 1 to the edge of the connecting member. Other undisclosed techniques and steps are the same as those described in the second embodiment.
The fourth concrete implementation mode: the present embodiment is described with reference to fig. 1 and fig. 2, and the implementation process of the using method of the backstop type connecting device according to the present embodiment is as follows:
the method comprises the following steps: selecting a full-thread stud 1, a gasket and a hexagon nut 3 matched with the full-thread stud 2 and the gasket which are arranged on a partition plate on an access hole of a water chamber of a high-pressure heater;
step two: connecting the selected full-thread stud 1, a gasket 2 and a hexagon nut 3 matched with the gasket to a partition plate on an access hole of a water chamber of the high-pressure heater, pre-screwing the full-thread stud 1 and the hexagon nut 3 matched with the full-thread stud 1, and marking the bottom of one end of the full-thread stud 1 exposed outside the hexagon nut 3;
step three: the pre-tightened full-thread stud 1, a washer 2 and a hexagon nut 3 are disassembled from a partition plate on an access hole of a water chamber of the high-pressure heater, and a through hole 1-1 vertical to the axis of the full-thread stud 1 is arranged at a marked position of the full-thread stud 1;
step four: the full-thread stud 1 and the hexagon nut 3 are installed on the partition plate on the access hole of the water chamber of the high-pressure heater again, and the full-thread stud 1 and the hexagon nut 3 matched with the full-thread stud are screwed tightly;
step five: and (3) enabling the metal inserting strip 4 to penetrate through the through hole 1-1, wherein the lengths of the metal inserting strip 4 exposed outside two ends of the through hole 1-1 are L1 and L2 respectively, one end of the metal inserting strip 4 is wound on the full-thread stud 1 along the circumferential direction of the full-thread stud 1, and the other end of the metal inserting strip 4 is bent to the outer side of the edge of the connecting piece along the extending direction of the nut and is attached to the edge of the connecting piece.
The fifth concrete implementation mode: in the present embodiment, the gasket 2 described in the first step is an elastic gasket, and other undisclosed techniques and steps are the same as those of the fourth embodiment.
The sixth specific implementation mode: in the fifth embodiment, the metal insert 4 is a thin steel bar, and other undisclosed techniques and steps are the same as those of the fifth embodiment.
The seventh embodiment: in the fifth step of the present embodiment, half of the perimeter of the end surface of the full-thread stud 1 is smaller than the length L1 of one end of the metal slip 4 exposed outside the through hole 1-1, twice the distance from the axis of the full-thread stud 1 to the edge of the partition board is smaller than the length L2 of the other end of the metal slip 4 exposed outside the through hole 1-1, and other undisclosed techniques and steps are the same as those in the sixth embodiment.
The specific implementation mode is eight: in the sixth embodiment, the angle α is 5 ° to 85 °, and other undisclosed techniques and steps are the same as those in the seventh embodiment.
Claims (3)
1. A using method of a backstop type connecting device relates to the method, the backstop type connecting device comprises a full-thread stud (1), a washer (2), a hexagon nut (3) and a metal inserting strip (4), one end of the full-thread stud (1) is provided with a through hole (1-1), the metal inserting strip (4) penetrates through the through hole (1-1) and the metal inserting strip (4) is exposed out of two ends of the through hole (1-1) in lengths of L1 and L2 respectively, one end of the metal inserting strip (4) is wound on the full-thread stud (1) along the circumferential direction of the full-thread stud (1), the other end of the metal inserting strip (4) is bent to the outer side of the edge of a connecting piece along the extending direction of a nut and is attached to the edge of the connecting piece, and the hexagon nut (3) and the washer (2) are sequentially sleeved on the full-thread stud (1) from the other;
the length L1 of one end of the metal inserting strip (4) exposed outside is half of the perimeter of the end face of the full-thread stud (1);
the length L2 of the other end of the metal inserting strip (4) exposed outside is twice of the distance h from the full-thread stud (1) to the edge of the connecting piece;
the method is characterized in that: the using method comprises the following steps:
the method comprises the following steps: selecting a full-thread stud (1) and a gasket (2) which are arranged on a partition plate on an access hole of a water chamber of a high-pressure heater and a hexagon nut (3) matched with the full-thread stud and the gasket;
step two: connecting the selected full-thread stud (1), a gasket (2) and a hexagon nut (3) matched with the gasket on a partition plate on an access hole of a water chamber of the high-pressure heater, pre-tightening the full-thread stud (1) and the hexagon nut (3) matched with the full-thread stud, and marking the bottom of one end, exposed outside the hexagon nut (3), of the full-thread stud (1);
step three: the pre-tightened full-thread stud (1), a washer (2) and a hexagon nut (3) are disassembled from a partition plate on an access hole of a water chamber of the high-pressure heater, and a through hole (1-1) vertical to the axis of the full-thread stud (1) is arranged at the marked part of the full-thread stud (1);
step four: the full-thread stud (1) and the hexagon nut (3) are remounted on the partition plate on the access hole of the water chamber of the high-pressure heater, and the full-thread stud (1) and the hexagon nut (3) matched with the full-thread stud are screwed down;
step five: the metal inserting strip (4) penetrates through the through hole (1-1), the lengths of the metal inserting strip (4) exposed outside two ends of the through hole (1-1) are L1 and L2 respectively, one end of the metal inserting strip (4) is wound on the full-thread stud (1) along the circumferential direction of the full-thread stud (1), and the other end of the metal inserting strip (4) is bent to the outer side of the edge of the connecting piece along the extending direction of the nut and attached to the edge of the connecting piece.
2. The method of using a backstop connection device as recited in claim 1, wherein: the gasket (2) in the first step is an elastic gasket.
3. The method of using a backstop connection device as recited in claim 2 wherein: and the metal inserting strip (4) in the fifth step is a thin steel bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811250144.7A CN109356926B (en) | 2018-10-25 | 2018-10-25 | Retaining type connecting device and using method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811250144.7A CN109356926B (en) | 2018-10-25 | 2018-10-25 | Retaining type connecting device and using method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109356926A CN109356926A (en) | 2019-02-19 |
| CN109356926B true CN109356926B (en) | 2021-05-07 |
Family
ID=65346608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811250144.7A Active CN109356926B (en) | 2018-10-25 | 2018-10-25 | Retaining type connecting device and using method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109356926B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR655056A (en) * | 1928-07-07 | 1929-04-15 | Nut fixing pin | |
| US1891358A (en) * | 1932-01-08 | 1932-12-20 | George B Pickop | Lock nut |
| CN2200720Y (en) * | 1994-05-10 | 1995-06-14 | 韦林 | Double-locking anti-loose combined nut |
| CN101545359A (en) * | 2008-03-26 | 2009-09-30 | 煤炭科学研究总院西安研究院 | Reed type shedding-proof inserted pin |
| JP5489038B2 (en) * | 2010-04-30 | 2014-05-14 | 株式会社山田精密製作所 | Nut with locking function |
-
2018
- 2018-10-25 CN CN201811250144.7A patent/CN109356926B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109356926A (en) | 2019-02-19 |
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