CN114323615B - Test fixture for service life identification of bellows of safety valve of spring type voltage stabilizer - Google Patents
Test fixture for service life identification of bellows of safety valve of spring type voltage stabilizer Download PDFInfo
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- CN114323615B CN114323615B CN202111604961.XA CN202111604961A CN114323615B CN 114323615 B CN114323615 B CN 114323615B CN 202111604961 A CN202111604961 A CN 202111604961A CN 114323615 B CN114323615 B CN 114323615B
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- 238000012360 testing method Methods 0.000 title claims abstract description 47
- 239000003381 stabilizer Substances 0.000 title claims abstract description 21
- 230000000670 limiting effect Effects 0.000 claims description 30
- 230000001105 regulatory effect Effects 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 6
- 238000013095 identification testing Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 210000002421 cell wall Anatomy 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000009864 tensile test Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
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Abstract
The application relates to a bellows life identification test fixture of a spring type voltage stabilizer safety valve, which belongs to the technical field of bellows life test and comprises a cylinder body and a mounting plate fixed with the side wall of the top end of the cylinder body, wherein the cylinder body is internally provided with a bellows; the top end of the corrugated pipe is fixed with a ring lining plate, the bottom end of the corrugated pipe is fixed with a corrugated pipe lining ring, and the bottom of the corrugated pipe lining ring is fixed with a corrugated pipe plug; the top of mounting panel is provided with the apron, and the ring lining board presss from both sides between apron and mounting panel, and the top of apron is provided with the cylinder, and the piston rod and the bellows of cylinder plug are connected. The application has the effect of detecting the service life of the corrugated pipe under the condition of simulating the actual working condition and measuring the service life of the corrugated pipe more accurately.
Description
Technical Field
The application relates to the technical field of bellows life test, in particular to a bellows life identification test tool for a safety valve of a spring type voltage stabilizer.
Background
The spring type voltage stabilizer safety valve is the last safety protection barrier of a primary loop of the pressurized water reactor nuclear power station. The bellows is a key part in the spring type pressure stabilizer safety valve, the body and the welding seam part of the bellows need to bear the working condition pressure and temperature of the inner cavity of the valve body, the compression amount of the bellows is continuously changed in the opening and closing processes of the valve, and the bellows and the welding seam of the bellows can be broken after a certain number of times of use, so that the sealing property of the bellows is invalid. The bellows has a great influence on the performance of the valve.
Therefore, in the development process of the safety valve of the spring type voltage stabilizer, the corrugated pipe is identified. During the life of the safety valve of the spring type voltage stabilizer, the corrugated pipe bears 3000-5000 working cycles. At present, the service life identification test of the corrugated pipe is generally carried out under normal temperature out-of-band pressure or under no out-of-band pressure, and the service life of the corrugated pipe is measured inaccurately.
Disclosure of Invention
In order to detect the service life of the corrugated pipe under the condition of simulating the actual working condition and more accurately measure the service life of the corrugated pipe, the application provides a service life identification test of the corrugated pipe of a safety valve of a spring type voltage stabilizer.
The application provides a service life identification test tool for a bellows of a safety valve of a spring type voltage stabilizer, which adopts the following technical scheme:
the utility model provides a spring-type voltage stabilizer relief valve bellows life-span appraisal test fixture, includes the cylinder body and the mounting panel fixed with cylinder body top lateral wall, be provided with the bellows in the cylinder body, be fixed with the intake pipe on the bottom lateral wall of cylinder body, install first governing valve and pressure sensor on the intake pipe, be fixed with the blast pipe on the bottom lateral wall of cylinder body, install the second governing valve on the blast pipe, temperature sensor is installed to the bottom of cylinder body;
the top end of the corrugated pipe is fixed with a ring lining plate, the bottom end of the corrugated pipe is fixed with a corrugated pipe lining ring, and the bottom of the corrugated pipe lining ring is fixed with a corrugated pipe plug;
The upper side of mounting panel is provided with the apron, the ring lining board presss from both sides between apron and the mounting panel, be provided with a plurality of first double-screw bolts on the apron, first double-screw bolt runs through the apron with the mounting panel, the apron top is provided with the first nut with first double-screw bolt threaded connection, the mounting panel below also is provided with the first nut with first double-screw bolt threaded connection, the top of apron is provided with the cylinder, the piston rod of cylinder with bellows stifled head is connected.
Through adopting above-mentioned technical scheme, when carrying out the test to the bellows, put into the cylinder body with the bellows, make the ring lining board press from both sides between apron and mounting panel, open first governing valve, open the second governing valve slightly, then let in steam in the intake pipe, heat and pressurize in the cylinder body, observe temperature sensor, after the temperature in the cylinder body reaches test temperature, close the second governing valve, pressurize inside test medium, after the pressure reaches test pressure, start the cylinder, the piston rod of cylinder drives the bellows end cap and does reciprocating motion, the bellows end cap drives the bellows and does reciprocating motion, thereby carry out life-span detection to the bellows under the circumstances of simulation actual conditions, the life-span of bellows is measured more accurately. The test medium of the tool can be various gases and vapors, and the coverage area is wider.
Optionally, be provided with the uide bushing in the cylinder body, the uide bushing top is fixed with and is located the mounting panel with splint between the apron, the holding tank has been seted up on the splint, the ring lining board is located the holding tank, the bottom lateral wall of bellows end cap with the inner wall contact of uide bushing.
Through adopting above-mentioned technical scheme, when the cylinder promotes the stifled first reciprocating motion of bellows, the bellows end cap removes along the inner wall of uide bushing, and the uide bushing plays the effect of direction to bellows reciprocating motion, has reduced the possibility that produces axial displacement when the bellows motion effectively. Every bellows corresponds a uide bushing, and splint are pressed from both sides between mounting panel and apron, when needs change the uide bushing, unscrew first nut and second nut on the apron, take off the apron, change new uide bushing, conveniently dismantle and install the uide bushing.
Optionally, the mounting groove has been seted up on the top surface of cylinder body, be provided with first gasket in the mounting groove, first gasket with the bottom contact of splint, be provided with the second gasket in the holding tank, the second gasket with the cell wall contact of holding tank, the ring lining board is located the top of second gasket.
Through adopting above-mentioned technical scheme, first gasket has increased the leakproofness between splint and the uide bushing, and the leakproofness between uide bushing and the ring lining board has been increased to the second gasket to the heating time of bellows in the cylinder body has been reduced.
Optionally, a plurality of vent holes are formed in the side wall of the guide sleeve.
Through adopting above-mentioned technical scheme, when letting in steam to the cylinder body in, steam can enter into inside the uide bushing through the air vent to balanced the inside and outside pressure differential of uide bushing, reduced the piston effect of bellows end cap and uide bushing.
Optionally, the apron top is provided with the cylinder fixed plate, be provided with a plurality of second double-screw bolts on the mounting panel, the second double-screw bolt runs through mounting panel, apron and cylinder fixed plate, be provided with the third nut with second double-screw bolt threaded connection on the apron, the below of mounting panel also is provided with the third nut with second double-screw bolt threaded connection, the top and the below of cylinder fixed plate all are provided with the second nut with second double-screw bolt threaded connection, the cylinder is fixed on the cylinder fixed plate.
Through adopting above-mentioned technical scheme, be provided with on the apron with second double-screw bolt threaded connection's second nut, the below of mounting panel also is provided with second double-screw bolt threaded connection's second nut, the connection of second double-screw bolt and second nut has further increased the stability of apron and mounting panel.
Optionally, the below of cylinder fixed plate is provided with the limiting plate, the piston rod of cylinder runs through the cylinder fixed plate and is fixed with the push rod, the push rod with limiting plate threaded connection, be provided with a plurality of bolts on the limiting plate, the bolt runs through the limiting plate with the cylinder fixed plate, the bolt head position of bolt with the below of limiting plate and with the limiting plate contact, the top and the below of cylinder fixed plate all be provided with bolt threaded connection's fourth nut.
Through adopting above-mentioned technical scheme, thereby the displacement stroke volume of bellows can be adjusted to the distance of limiting plate relative cylinder fixed plate. When the stroke amount of the corrugated pipe is increased, the fourth nut is screwed upwards, the distance between the bolt head of the adjusting bolt and the cylinder fixing plate is increased, when the piston rod of the cylinder is ejected out, the limiting plate is in contact with the bolt head of the bolt, the distance between the limiting plate and the cylinder fixing plate is increased, when the limiting plate is in contact with the bolt head of the bolt, the lower edge of the corrugated pipe is limited, and the top wall of the cylinder wall is limited along the upper edge.
Optionally, be provided with the universal joint subassembly between push rod and the bellows end cap, the universal joint subassembly includes first connecting axle, second connecting axle and joint, the push rod is kept away from the one end of cylinder inserts in the second connecting axle and with second connecting axle threaded connection, the second connecting axle is articulated with the joint, first connecting axle is articulated with the one end that the second connecting axle was kept away from to the joint, first connecting axle is kept away from the one end that the joint inserts in the bellows end cap and with bellows end cap threaded connection.
Through adopting above-mentioned technical scheme, the universal joint subassembly is located between push rod and the bellows, has increased the distance between push rod and the bellows, makes the cylinder keep away from the thermal state region, plays the effect of protection to the cylinder. The universal joint assembly can increase the straightness when the cylinder moves.
Optionally, the mounting hole has been seted up to the bottom of cylinder body, temperature sensor and mounting hole threaded connection.
By adopting the technical scheme, after the test is finished on the corrugated pipe, water or other impurities can exist in the cylinder body, the temperature sensor is detached, and the water or other impurities can be discharged from the mounting hole.
Optionally, an automatic electromagnetic switching valve is installed on the air source of the air cylinder, one side of the automatic electromagnetic switching valve is provided with a counting control box, and the automatic electromagnetic switching valve is connected with the counting control box.
By adopting the technical scheme, the counting control box controls the automatic electromagnetic switching valve to drive the cylinder to reciprocate and count in the test process, and compared with the manual counting life test, the labor intensity is reduced.
In summary, the present application includes at least one of the following beneficial technical effects:
1. The service life of the corrugated pipe is detected under the condition of simulating the actual working condition, so that the service life of the corrugated pipe is measured more accurately;
2. The corrugated pipe plug moves along the inner wall of the guide sleeve, and the guide sleeve plays a role in guiding the reciprocating movement of the corrugated pipe, so that the possibility of axial displacement generated during the movement of the corrugated pipe is effectively reduced;
3. The tool can simulate the actual working condition to adjust the displacement stroke quantity of the corrugated pipe;
4. The universal joint assembly can increase straightness when the air cylinder moves and enable the air cylinder to be far away from a thermal state area, and the air cylinder is protected.
Drawings
Fig. 1 is a schematic view of the overall structure embodying the present application.
Fig. 2 is a top view of a structure embodying the present application.
Fig. 3 is a cross-sectional view embodying A-A of fig. 2.
FIG. 4 is a schematic view of a gimbal assembly and a second spacer embodying the present application.
Reference numerals illustrate: 1. a cylinder assembly; 11. a cylinder; 111. an air inlet pipe; 112. a first regulating valve; 113. a pressure sensor; 114. an exhaust pipe; 115. a second regulating valve; 116. a temperature sensor; 117. a mounting hole; 12. a mounting plate; 13. a test bed; 14. a mounting groove; 141. a first gasket; 2. a guide sleeve; 21. a clamping plate; 211. a receiving groove; 212. a second gasket; 22. a vent hole; 23. a limiting block; 3. a cover plate; 31. a first stud; 32. a first nut; 33. a second stud; 34. a second nut; 35. a third nut; 4. a bellows assembly; 41. a bellows collar; 42. a bellows; 43. a ring lining plate; 44. a corrugated pipe plug; 5. a cylinder fixing plate; 51. a cylinder; 52. a push rod; 6. a gimbal assembly; 61. a first connecting shaft; 62. a second connecting shaft; 63. a joint; 64. a first pin; 65. a second pin; 7. a limiting plate; 71. a bolt; 72. and a fourth nut.
Detailed Description
The application is described in further detail below with reference to fig. 1-4.
The embodiment of the application discloses a service life identification test tool for a bellows of a safety valve of a spring type voltage stabilizer. Referring to fig. 1, the test fixture for identifying the service life of the bellows of the safety valve of the spring type voltage stabilizer comprises a cylinder assembly 1 and a test bench 13, wherein the cylinder assembly 1 comprises a cylinder 11 and a mounting plate 12, the mounting plate 12 is fixedly welded with the outer wall of the top end of the cylinder 11, and the top surface of the mounting plate 12 is flush with the top surface of the cylinder 11. The outer wall of the cylinder 11 is fixed on the test bench 13, and the mounting plate 12 is positioned above the test bench 13.
Referring to fig. 2 and 3, a guide sleeve 2 is provided in the cylinder 11, and a bellows assembly 4 is installed in the guide sleeve 2. The top of the guide sleeve 2 is fixed with a clamping plate 21, the guide sleeve 2 and the clamping plate 21 are integrally formed, a cover plate 3 is arranged above the mounting plate 12, and after the guide sleeve 2 is placed in the cylinder 11, the clamping plate 21 is positioned between the cover plate 3 and the mounting plate 12. A cylinder fixing plate 5 is arranged above the mounting plate 12, a cylinder 51 is fixed above the cylinder fixing plate 5, and a piston rod of the cylinder 51 can drive the corrugated pipe 42 to carry out tensile test.
An automatic electromagnetic switching valve is installed on the air source of the air cylinder 51, and the automatic electromagnetic switching valve is connected with a counting control box (the automatic electromagnetic switching valve and the counting control box are not shown in the figure). The counting control box controls the automatic electromagnetic switching valve to drive the cylinder 51 to reciprocate and count simultaneously in the test process. The counting is carried out through the counting control box, and compared with manual counting, the labor intensity is greatly reduced.
An air inlet pipe 111 is fixed on the bottom end side wall of the cylinder body 11, a first regulating valve 112 is installed on the air inlet pipe 111, and a pressure sensor 113 is also installed on the air inlet pipe 111. An exhaust pipe 114 is fixed to a side of the bottom end side wall of the cylinder 11 away from the intake pipe 111, and a second regulating valve 115 is installed on the exhaust pipe 114. The bottom of the cylinder body 11 is provided with a temperature sensor 116, the bottom of the cylinder body 11 is provided with a mounting hole 117, the wall of the mounting hole 117 is provided with threads, and the temperature sensor 116 is in threaded connection with the mounting hole 117. The temperature sensor 116 can detect the temperature in the cylinder 11.
In the test, the first control valve 112 was opened, the second control valve 115 was slightly opened, and a high-temperature medium (for example, steam) was introduced into the intake pipe 111 to heat and pressurize the cylinder 11. Similarly, a low-temperature test medium may be input into the air inlet pipe 111 for a cold-hot alternating test for cooling the bellows 42 to be tested. The cold state, the hot state and the cold-hot alternating test of the tool are integrated, and the test medium of the tool can be various gases and vapors.
After the inside of the cylinder 11 reaches the test temperature, the second regulating valve 115 is closed, and the cylinder 51 reciprocates to drive the bellows 42 to perform a tensile test.
After the test, the temperature sensor 116 is required to be unscrewed, some water and impurities remained in the cylinder 11 are discharged from the mounting hole 117, and the temperature sensor 116 is mounted at the bottom of the cylinder 11 after the impurities are discharged.
The cover plate 3 and the mounting plate 12 are cylindrical plates, and the diameters of the cover plate 3 and the mounting plate 12 are the same. Four first studs 31 penetrate through the cover plate 3 and the mounting plate 12, and the four first studs 31 are uniformly arranged along the circumferential direction of the cover plate 3. A first nut 32 in threaded connection with the first stud 31 is arranged above the cover plate 3, and the first nut 32 abuts against the upper surface of the cover plate 3; a first nut 32 is also provided below the mounting plate 12 in threaded connection with the first stud 31, the first nut 32 abutting against the lower surface of the mounting plate 12. The mounting plate 12 and the cover plate 3 are fixed by a first stud 31 and a first nut 32.
Referring to fig. 3 and 4, a gap exists between the outer wall of the guide sleeve 2 and the inner wall of the cylinder 11, and in order to prevent the guide sleeve 2 from being displaced in the left-right direction, a stopper 23 is fixed to the side wall of the top end of the guide sleeve 2, the stopper 23 is fixed to the clamping plate 21, one side of the stopper 23 away from the guide sleeve 2 abuts against the inner wall of the cylinder 11, and the stopper 23 and the guide sleeve 2 are integrally formed.
The mounting groove 14 that the circumferencial direction set up has been seted up on the top surface of cylinder body 11, installs first gasket 141 on the mounting groove 14, and first gasket 141 is annular gasket, and first gasket 141 and stopper 23 contact, and the leakproofness between guide sleeve 2 and the cylinder body 11 has been increased to first gasket 141.
The bellows assembly 4 comprises a bellows liner 41, a bellows 42 and a ring liner 43, wherein the bottom end of the bellows 42 is fixedly connected with the bellows liner 41, and the top end of the bellows 42 is fixedly connected with the ring liner 43. The side of the corrugated pipe lining 41 away from the corrugated pipe 42 is connected with a corrugated pipe plug 44, and the corrugated pipe lining 41 and the corrugated pipe plug 44 are welded and fixed. The bottom side wall of the bellows plug 44 contacts the inner wall of the guide sleeve 2.
The holding groove 211 has been seted up on the top surface of splint 21, and ring lining board 43 is located holding groove 211, installs second gasket 212 in the holding groove 211, and second gasket 212 is annular gasket, and second gasket 212 contacts with the cell wall of holding groove 211, and ring lining board 43 is located the top of second gasket 212, and second gasket 212 has increased the leakproofness between uide bushing 2 and the ring lining board 43.
When the pressure in the cylinder 11 increases, in order to reduce the piston effect of the bellows plug 44 and the guide sleeve 2, the side wall of the guide sleeve 2 is provided with a plurality of ventilation holes 22, and the plurality of ventilation holes 22 are uniformly arranged along the circumferential direction of the guide sleeve 2. Each guide sleeve 2 corresponds to a bellows 42, and the guide sleeve 2 is required to be matched with the bellows 42 due to the different sizes of the bellows 42 to be tested, and the guide sleeve 2 is convenient to install and replace as is known from the above.
Four second studs 33 are arranged between the cylinder fixing plate 5 and the mounting plate 12, the second studs 33 are arranged at intervals with the first studs 31, and the second studs 33 sequentially penetrate through the cylinder fixing plate 5, the cover plate 3 and the mounting plate 12 from top to bottom. The cylinder fixing plate 5 is provided with second nuts 34 above and below, and both the second nuts 34 are in threaded connection with the second studs 33. A third nut 35 in threaded connection with the second stud 33 is provided above the cover plate 3, and a third nut 35 in threaded connection with the second stud 33 is provided below the mounting plate 12.
Referring to fig. 3 and 4, a piston rod of the cylinder 51 penetrates the cylinder fixing plate 5 and is fixedly connected with a push rod 52, and the push rod 52 is provided with threads. In order to ensure the straightness when the cylinder 51 pushes the bellows 42, a universal joint assembly 6 is arranged between the push rod 52 and the bellows plug 44. The universal joint assembly 6 includes a first connecting shaft 61, a second connecting shaft 62, and a joint 63, and an end of the push rod 52 remote from the cylinder 51 is inserted into the second connecting shaft 62 and is screw-coupled with the second connecting shaft 62.
The end of the second connecting shaft 62 far away from the piston rod of the air cylinder 51 is hinged with the joint 63, a first pin shaft 64 is arranged on the joint 63, the first pin shaft 64 penetrates through the joint 63 and the second connecting shaft 62, and the joint 63 can rotate along the first pin shaft 64.
The first connecting shaft 61 is located the one end that connects 63 and keep away from the second connecting shaft 62, and first connecting shaft 61 is articulated with connecting 63, is provided with second round pin axle 65 on the connecting 63, and second round pin axle 65 runs through connecting 63 and first connecting shaft 61, and the axis direction of first round pin axle 64 and second round pin axle 65 sets up perpendicularly. The end of the first connection shaft 61 remote from the joint 63 is inserted into the bellows plug 44 and is screwed with the bellows plug 44.
Be provided with limiting plate 7 between apron 3 and the cylinder fixed plate 5, limiting plate 7 and push rod 52 threaded connection installs bolt 71 on the limiting plate 7, and the bolt head of bolt 71 is located the below of limiting plate 7, and bolt 71 runs through limiting plate 7 and cylinder fixed plate 5, and the top and the below of cylinder fixed plate 5 all are provided with the fourth nut 72 with bolt 71 threaded connection, and cylinder 51 passes through the screw with cylinder fixed plate 5 and fixes.
The distance between the limiting plate 7 and the cylinder fixing plate 5 can be adjusted, thereby adjusting the stroke of the bellows 42. Before testing the bellows 42, it is necessary to determine the stroke of the bellows 42. When the stroke of the bellows 42 needs to be increased, the fourth nuts 72 on the bolts 71 are loosened, the fourth nuts 72 above and below the cylinder fixing plate 5 are screwed upward, the bolt heads of the bolts 71 move downward, and the limiting plate 7 can move downward.
When the piston rod of the air cylinder 51 drives the push rod 52 to move, the push rod 52 drives the limiting plate 7 to move, and when the push rod 52 drives the limiting plate 7 to move downwards, the position of the limiting plate 7 abutting against the head of the bolt 71 is stopped, and the position is limited by the lower edge of the stretching corrugated pipe 42. The top wall of the cylinder 51 wall is upper edge limited.
The implementation principle of the test fixture for the service life identification of the bellows of the safety valve of the spring type voltage stabilizer provided by the embodiment of the application is as follows:
Step one: when the life test is performed on the bellows 42, the cylinder 11 is first fixed to the test stand 13, and the first gasket 141, the guide bush 2, the second gasket 212, and the bellows assembly 4 are sequentially incorporated into the cylinder 11, and the cover plate 3 is attached thereto, and the cover plate 3 and the mounting plate 12 are fixed by the first bolts 71 and the first nuts 32.
Then, after the piston rod of the cylinder 51 is compressed to the bottommost portion, the cylinder 51 is fixed to the cylinder fixing plate 5, the second stud 33 is mounted on the cover plate 3 and the mounting plate 12, the fixing plate of the cylinder 51 is mounted on the upper portion of the second stud 33, and the cylinder fixing plate 5 is adjusted to an appropriate height.
And then the limiting plate 7 is in threaded connection with the push rod 52, penetrates into the bolt 71 with the limiting effect, adjusts the stroke of the air cylinder 51 to meet the test requirement, and is used for locking related fasteners. The end of the push rod 52 is sequentially provided with a universal joint assembly 6 consisting of a second connecting shaft 62, a joint 63, a first connecting shaft 61 and a pin, and the universal joint assembly 6 is slowly moved up and down to be connected with the bellows plug 44 to be tested through adjusting a third nut 35 on the stud.
Step two: the pressure source is connected to an intake pipe 111, a pressure sensor 113 is attached to the intake pipe 111, and a temperature sensor 116 is attached to the bottom of the cylinder 11.
Step three: the air source of the air cylinder 51 is connected to the air cylinder 51 through an automatic electromagnetic switching valve, and the automatic switching valve is connected with a counting control box.
Step four: after the second regulating valve 115 is slightly opened, the first regulating valve 112 is opened, and the inside of the cylinder 11 starts to be heated and pressurized.
Step five: after the interior of the cylinder 11 reaches the test temperature, the second regulating valve 115 is closed, the internal test medium is pressurized until the test requirement is met, and the counting control box is opened.
Step six: in the test process, the counting control box controls the automatic electromagnetic switching valve to drive the cylinder 51 to reciprocate, and meanwhile, the counting control box counts. The bellows 42 under test may be observed during a pause test for a number of test runs. Also during the test, it is observed whether the relevant sensor is abnormal or whether the test medium overflows at the tooling cover plate 3.
The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.
Claims (7)
1. A spring type voltage stabilizer relief valve bellows life-span appraisal test fixture which characterized in that: the novel air conditioner comprises a cylinder body (11) and a mounting plate (12) fixed with the side wall of the top end of the cylinder body (11), wherein a corrugated pipe (42) is arranged in the cylinder body (11), an air inlet pipe (111) is fixed on the side wall of the bottom end of the cylinder body (11), a first regulating valve (112) and a pressure sensor (113) are arranged on the air inlet pipe (111), an exhaust pipe (114) is fixed on the side wall of the bottom end of the cylinder body (11), a second regulating valve (115) is arranged on the exhaust pipe (114), and a temperature sensor (116) is arranged at the bottom of the cylinder body (11);
The top end of the corrugated pipe (42) is fixed with a ring lining plate (43), the bottom end of the corrugated pipe (42) is fixed with a corrugated pipe lining ring (41), and the bottom of the corrugated pipe lining ring (41) is fixed with a corrugated pipe plug (44);
A cover plate (3) is arranged above the mounting plate (12), the annular lining plate (43) is clamped between the cover plate (3) and the mounting plate (12), a plurality of first studs (31) are arranged on the cover plate (3), the first studs (31) penetrate through the cover plate (3) and the mounting plate (12), a first nut (32) in threaded connection with the first studs (31) is arranged above the cover plate (3), and a first nut (32) in threaded connection with the first studs (31) is also arranged below the mounting plate (12);
a guide sleeve (2) is arranged in the cylinder body (11), the corrugated pipe (42) is positioned in the guide sleeve (2), the side wall of the bottom end of the corrugated pipe plug (44) is in contact with the inner wall of the guide sleeve (2), and a plurality of vent holes (22) are formed in the side wall of the guide sleeve (2);
An air cylinder fixing plate (5) is arranged above the cover plate (3), the air cylinder fixing plate (5) is fixedly connected with the mounting plate (12) through a second stud (33), and an air cylinder (51) is arranged on the air cylinder fixing plate (5);
a limiting plate (7) is arranged below the air cylinder fixing plate (5), a piston rod of the air cylinder (51) penetrates through the air cylinder fixing plate (5) and is fixedly provided with a push rod (52), the push rod (52) is in threaded connection with the limiting plate (7), the push rod (52) is connected to the corrugated pipe plug (44), a plurality of bolts (71) are arranged on the limiting plate (7), the bolts (71) penetrate through the limiting plate (7) and the air cylinder fixing plate (5), and fourth nuts (72) in threaded connection with the bolts (71) are arranged above and below the air cylinder fixing plate (5);
When a piston rod of the air cylinder (51) drives the push rod (52) to move, the push rod (52) drives the limiting plate (7) to move, the position of the limiting plate (7) propped against the head of the bolt (71) is stopped, and the position is limited by the lower edge of the stretching corrugated pipe (42); the top wall of the cylinder (51) wall is limited by the upper edge.
2. The test fixture for identifying the service life of the bellows of the safety valve of the spring type voltage stabilizer according to claim 1 is characterized in that: the top end of the guide sleeve (2) is fixedly provided with a clamping plate (21) positioned between the mounting plate (12) and the cover plate (3), the clamping plate (21) is provided with a containing groove (211), and the ring lining plate (43) is positioned in the containing groove (211).
3. The test fixture for identifying the service life of the bellows of the safety valve of the spring type voltage stabilizer according to claim 2 is characterized in that: the cylinder body is characterized in that a mounting groove (14) is formed in the top surface of the cylinder body (11), a first gasket (141) is arranged in the mounting groove (14), the first gasket (141) is in contact with the bottom end of the clamping plate (21), a second gasket (212) is arranged in the accommodating groove (211), the second gasket (212) is in contact with the groove wall of the accommodating groove (211), and the annular lining plate (43) is located above the second gasket (212).
4. The test fixture for identifying the service life of the bellows of the safety valve of the spring type voltage stabilizer according to claim 1 is characterized in that:
Be provided with a plurality of second double-screw bolts (33) on mounting panel (12), second double-screw bolt (33) run through mounting panel (12), apron (3) and cylinder fixed plate (5), be provided with on apron (3) with second double-screw bolt (33) threaded connection's third nut (35), the below of mounting panel (12) also is provided with second double-screw bolt (33) threaded connection's third nut (35), the top and the below of cylinder fixed plate (5) all are provided with second nut (34) with second double-screw bolt (33) threaded connection, cylinder (51) are fixed on cylinder fixed plate (5).
5. The test fixture for identifying the service life of the bellows of the safety valve of the spring type voltage stabilizer according to claim 1 is characterized in that: the novel corrugated pipe sealing device is characterized in that a universal joint assembly (6) is arranged between the push rod (52) and the corrugated pipe plug (44), the universal joint assembly (6) comprises a first connecting shaft (61), a second connecting shaft (62) and a joint (63), one end, away from the cylinder (51), of the push rod (52) is inserted into the second connecting shaft (62) and is in threaded connection with the second connecting shaft (62), the second connecting shaft (62) is hinged with the joint (63), the first connecting shaft (61) is hinged with one end, away from the second connecting shaft (62), of the joint (63), and one end, away from the joint (63), of the first connecting shaft (61) is inserted into the corrugated pipe plug (44) and is in threaded connection with the corrugated pipe plug (44).
6. The test fixture for identifying the service life of the bellows of the safety valve of the spring type voltage stabilizer according to claim 1 is characterized in that: and the bottom end of the cylinder body (11) is provided with a mounting hole (117), and the temperature sensor (116) is in threaded connection with the mounting hole (117).
7. The test fixture for identifying the service life of the bellows of the safety valve of the spring type voltage stabilizer according to claim 1 is characterized in that: an automatic electromagnetic switching valve is arranged on an air source of the air cylinder (51), one side of the automatic electromagnetic switching valve is provided with a counting control box, and the automatic electromagnetic switching valve is connected with the counting control box.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111604961.XA CN114323615B (en) | 2021-12-24 | 2021-12-24 | Test fixture for service life identification of bellows of safety valve of spring type voltage stabilizer |
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Citations (4)
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|---|---|---|---|---|
| JP2003042579A (en) * | 2001-07-24 | 2003-02-13 | Sanyo Electric Co Ltd | Oil seal bellows for stirling refrigerator |
| CN209085907U (en) * | 2018-10-19 | 2019-07-09 | 东泰高科装备科技有限公司 | Bellows life test tooling |
| CN111855174A (en) * | 2020-07-10 | 2020-10-30 | 四川九天真空科技股份有限公司 | Valve bellows life-span test frock |
| CN214097006U (en) * | 2020-12-25 | 2021-08-31 | 中辽检测(辽宁)有限公司 | Bellows high and low temperature fatigue test device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101655168B (en) * | 2009-09-09 | 2011-02-09 | 陈保春 | Self-contained pressure transmitting and reducing valve for corrugated pipe |
-
2021
- 2021-12-24 CN CN202111604961.XA patent/CN114323615B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003042579A (en) * | 2001-07-24 | 2003-02-13 | Sanyo Electric Co Ltd | Oil seal bellows for stirling refrigerator |
| CN209085907U (en) * | 2018-10-19 | 2019-07-09 | 东泰高科装备科技有限公司 | Bellows life test tooling |
| CN111855174A (en) * | 2020-07-10 | 2020-10-30 | 四川九天真空科技股份有限公司 | Valve bellows life-span test frock |
| CN214097006U (en) * | 2020-12-25 | 2021-08-31 | 中辽检测(辽宁)有限公司 | Bellows high and low temperature fatigue test device |
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| Title |
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| 涡轮泵端面密封波纹管波形分析与试验研究;涂霆;李铭;吴霖;须村;叶小强;导弹与航天运载技术;20191231(第004期);全文 * |
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| CN114323615A (en) | 2022-04-12 |
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