CN116130293A - High-precision irradiation-resistant nuclear-grade pressure switch - Google Patents
High-precision irradiation-resistant nuclear-grade pressure switch Download PDFInfo
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- CN116130293A CN116130293A CN202310403348.4A CN202310403348A CN116130293A CN 116130293 A CN116130293 A CN 116130293A CN 202310403348 A CN202310403348 A CN 202310403348A CN 116130293 A CN116130293 A CN 116130293A
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- 239000012528 membrane Substances 0.000 claims abstract description 61
- 230000007246 mechanism Effects 0.000 claims abstract description 20
- 238000007789 sealing Methods 0.000 claims description 26
- 230000005855 radiation Effects 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- 230000000903 blocking effect Effects 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 5
- 238000000926 separation method Methods 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 abstract description 19
- 230000035945 sensitivity Effects 0.000 abstract description 5
- 230000008569 process Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000010771 distillate fuel oil Substances 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H35/00—Switches operated by change of a physical condition
- H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
- H01H35/34—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow actuated by diaphragm
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H35/00—Switches operated by change of a physical condition
- H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
- H01H35/26—Details
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Manufacture Of Switches (AREA)
- Pressure Vessels And Lids Thereof (AREA)
Abstract
The invention relates to the technical field of pressure switches, in particular to a high-precision irradiation-resistant nuclear-grade pressure switch, which comprises a shell, an elastic membrane, a linkage mechanism and a micro switch, wherein the shell is provided with a plurality of elastic membranes; the cavity opening of the accommodating cavity penetrates through the shell; the shell is provided with a threaded interface; the elastic membrane consists of a first membrane and a second membrane, and the second membrane is positioned below the first membrane; a supporting ring is arranged in the accommodating cavity; the support ring is positioned below the second membrane, and a support spring is fixedly connected below the support ring; the side edge of the shell is provided with a replacement mechanism; the replacing mechanism is used for replacing the second film when the second film is damaged; according to the invention, the second membrane is wrapped on the outer side of the first membrane, and when the pressure switch is used, the second membrane is in contact with liquid in the accommodating cavity instead of the first membrane, and the second membrane below the first membrane is replaced regularly, so that the first membrane is not damaged, and the sensitivity of the pressure switch is not affected.
Description
Technical Field
The invention relates to the technical field of pressure switches, in particular to a high-precision radiation-resistant nuclear-grade pressure switch.
Background
The pressure switch mainly comprises a power element (sensing external pressure), a mechanical linkage mechanism (transmitting pressure), a micro switch (executing actions by normally open and normally closed contacts) and the like, and is an electric contact device for driving the switch through the action of gas or liquid pressure;
the pressure switch usually adopts two forms of a diaphragm type transmitter and a non-leakage piston type sensor, the diaphragm type transmitter is suitable for liquid media such as air, gas, lubricating oil, light fuel oil and the like, and the non-leakage piston type transmitter is suitable for neutral lubricating media such as hydraulic oil, lubricating oil, light fuel oil and the like;
the nuclear pressure switch needs to be suitable for the high irradiation environment, and the isolation diaphragm of the pressure switch using the diaphragm type conductor is extremely easy to damage under the severe and complex high irradiation environment, so that the sensitivity of the pressure switch is influenced or the pressure switch is damaged, the service life of the pressure switch is greatly shortened, and the limitation is caused.
Therefore, we propose a high-precision irradiation-resistant nuclear pressure switch.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a high-precision irradiation-resistant nuclear pressure switch, which overcomes the defects of the prior art and aims at solving the problems in the background art.
In order to achieve the above purpose, the present invention provides the following technical solutions: a high-precision radiation-resistant nuclear pressure switch comprises
A housing; a containing cavity is formed in the shell; an elastic membrane, a linkage mechanism and a micro switch are arranged in the accommodating cavity; the cavity opening of the accommodating cavity penetrates through the shell; the shell is provided with a threaded interface;
the elastic membrane consists of a first membrane and a second membrane, and the second membrane is positioned below the first membrane; a supporting ring is arranged in the accommodating cavity; the support ring is positioned below the second membrane, and a support spring is fixedly connected below the support ring; the supporting spring is fixedly connected with the shell;
the side edge of the shell is provided with a replacement mechanism; the replacement mechanism is used for replacing the second film when the second film is damaged.
Preferably, the replacing mechanism comprises a mounting block, a pressing rod, a magnet ring and a replacing ring; the mounting block is fixedly connected with the shell, and a storage cavity is formed in the mounting block; the storage cavity is communicated with the containing cavity; the side walls on two sides of the storage cavity are connected with sliding blocks in a sliding manner; the sliding block is fixedly connected with the replacement ring, and a replacement screw rod is connected to the sliding block in a threaded manner; the upper end of the replacement screw rod is rotatably connected with the mounting block and exposes the mounting block; the magnet ring is fixedly connected in the replacement ring side; an electromagnet block is fixedly connected above the accommodating cavity;
the upper end of the lower pressure rod penetrates through the shell and is in rotary connection with the shell, and the lower end of the lower pressure rod is provided with threads and is in threaded fit with the support ring; and a metal ring is fixedly connected in the second film.
The second membrane is wrapped on the outer side of the first membrane, and the second membrane is in contact with the liquid in the accommodating cavity instead of the first membrane when the pressure switch is used, so that the second membrane below the first membrane is replaced regularly, the first membrane is not damaged, and the sensitivity of the pressure switch is not affected.
Preferably, a separation plate is fixedly connected in the storage cavity; a placing block is connected in a sliding way in the storage cavity; the placing block is in threaded connection with a moving rod; the upper end of the moving rod penetrates through the mounting block and is in rotary sealing connection with the mounting block; the fixed blocks are uniformly arranged on the placing blocks at intervals up and down; the side edge of the fixed block is concavely arranged inwards; the second film is clamped in the concave part of the fixed block.
Preferably, the separation plate is disposed obliquely downward.
Preferably, the placing block is uniformly and rotatably connected with the mounting seat; a torsion spring is connected between the mounting seat and the placement block; the mounting seat is horizontally arranged and can only rotate upwards; both sides of the mounting seat are hinged with the fixed block; a spiral groove is formed in one side, hinged with the mounting seat, of the fixed block; a sliding piece is connected in a sliding way in the mounting seat; the sliding piece is T-shaped, the lower end of the sliding piece is exposed out of the mounting seat, and the left end and the right end of the sliding piece are in sliding fit with the spiral grooves which are uniformly and correspondingly arranged; the storage cavity is internally provided with two groups of placing blocks, moving rods, mounting seats, fixing blocks and sliding pieces.
Preferably, the pitch of the spiral groove is at least the height of two fixing blocks.
The fixing blocks are symmetrically arranged in the storage cavity, so that the second film in the storage cavity is fixed, the second film is more stable in the storage cavity, and the situation that the second film is separated from the fixing blocks in the transportation process is reduced; meanwhile, the spiral line of the spiral groove is steeper in the vertical direction, and the self-locking effect can be achieved.
Preferably, a cavity opening communicated with the storage cavity is fixedly connected with a return-shaped sealing opening; the sealing block is rotatably connected with the cavity through a torsion spring; a drainage screw hole is formed below the mounting block; the drainage screw hole is communicated with the storage cavity, and the drainage screw hole is rotationally connected with a drainage bolt; the sealing block is made of a flexible material, such as rubber.
The storage cavity is internally provided with the return-shaped sealing port and the sealing block, so that the storage cavity is not contacted with liquid when the invention is normally used, and therefore, the invention can not leak liquid from the position where the moving rod or the replacement screw rod is rotationally connected with the mounting block when in use, and meanwhile, the replacement ring is not influenced to extend into the accommodating groove, and the second membrane is replaced.
Preferably, the upper end of one of the moving rods in the storage cavity is not exposed out of the mounting block; the same transmission belt is sleeved between the two movable rods in the storage cavity.
Preferably, the support ring is fixedly connected with a plugging block; the plugging block can plug the cavity opening of the accommodating cavity.
The invention has the beneficial effects that:
1. according to the invention, the second membrane is wrapped on the outer side of the first membrane, and when the pressure switch is used, the second membrane is in contact with liquid in the accommodating cavity instead of the first membrane, and the second membrane below the first membrane is replaced regularly, so that the first membrane is not damaged, and the sensitivity of the pressure switch is not affected.
2. According to the invention, the fixing blocks are symmetrically arranged in the storage cavity, so that the second film in the storage cavity is fixed, the second film is more stable in the storage cavity, and the situation that the second film is separated from the fixing blocks in the transportation process is reduced; meanwhile, the spiral line of the spiral groove is steeper in the vertical direction, and the self-locking effect can be achieved.
3. According to the invention, the storage cavity is internally provided with the return-shaped sealing port and the sealing block, so that the storage cavity is not contacted with liquid when the invention is normally used, and therefore, the leakage of liquid from the part of the movable rod or the rotating connection part of the replacement screw rod and the mounting block is avoided when the invention is used, and the replacement ring is not influenced to extend into the accommodating groove, so that the second membrane is replaced.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a partial cross-sectional view of the housing of the present invention;
FIG. 3 is an enlarged view of FIG. 2 at A;
FIG. 4 is a schematic view of the structure of the mounting block, the placement block, the fixing block and the second film in the present invention when the mounting block is partially cut away;
FIG. 5 is a cross-sectional view of the replacement ring of the present invention;
FIG. 6 is a schematic view of the structure of the placement block, mounting base, torsion spring, fixing block and second film according to the present invention;
FIG. 7 is an enlarged view at B in FIG. 6;
fig. 8 is a schematic diagram showing the positional relationship of the fixed block, the spiral groove and the slider in the present invention.
In the figure: 1. a housing; 11. a receiving chamber; 12. a threaded interface; 13. a support ring; 14. a support spring; 2. an elastic film; 21. a first film; 22. a second film; 3. a linkage mechanism; 4. a micro-switch; 5. a replacement mechanism; 51. a mounting block; 52. pressing down a rod; 53. a magnet ring; 54. a replacement ring; 55. a storage chamber; 56. a sliding block; 57. replacing the screw rod; 58. an electromagnet block; 59. a metal ring; 6. a separation plate; 61. placing a block; 62. a moving rod; 63. a fixed block; 64. a mounting base; 65. a torsion spring; 66. a spiral groove; 67. a slider; 7. a circular sealing port; 71. a sealing block; 72. a drain screw hole; 73. a drain bolt; 8. a drive belt; 9. and (5) plugging the block.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Embodiment one:
referring to the accompanying drawings 1 and 2 of the specification, a high precision irradiation-resistant nuclear pressure switch comprises
A housing 1; a containing cavity 11 is arranged in the shell 1; an elastic membrane 2, a linkage mechanism 3 and a micro switch 4 are arranged in the accommodating cavity 11; the cavity opening of the accommodating cavity 11 penetrates through the shell 1; the shell 1 is provided with a threaded interface 12;
the elastic film 2 consists of a first film 21 and a second film 22, and the second film 22 is positioned below the first film 21; a supporting ring 13 is arranged in the accommodating cavity 11; the support ring 13 is positioned below the second membrane 22, and a support spring 14 is fixedly connected below the support ring 13; the supporting spring 14 is fixedly connected with the shell 1;
the side of the shell 1 is provided with a replacement mechanism 5; the replacement mechanism 5 is used for replacing the second film 22 when the second film 22 is damaged.
Referring to fig. 2, 3, 4 and 5 of the drawings, in this embodiment, the replacement mechanism 5 includes a mounting block 51, a pressing rod 52, a magnet ring 53 and a replacement ring 54; the mounting block 51 is fixedly connected with the shell 1, and a storage cavity 55 is formed in the mounting block 51; the storage chamber 55 communicates with the accommodation chamber 11; the side walls on two sides of the storage cavity 55 are connected with sliding blocks 56 in a sliding manner; the sliding block 56 is fixedly connected with the replacement ring 54, and the sliding block 56 is in threaded connection with a replacement screw rod 57; the upper end of the replacement screw rod 57 is rotatably connected with the mounting block 51 and exposes the mounting block 51; the magnet ring 53 is fixedly connected in the replacement ring 54 side; an electromagnet block 58 is fixedly connected above the accommodating cavity 11;
the upper end of the lower pressing rod 52 penetrates through the shell 1 and is in rotary connection with the shell 1, and the lower end of the lower pressing rod 52 is provided with threads and is in threaded fit with the supporting ring 13; a metal ring 59 is fixedly connected in the second membrane 22.
When the micro-switch device is used, a worker connects the micro-switch 4 with an external controller through a circuit, and then connects the screw interface of the micro-switch device with a pipeline through threads, so that the accommodating cavity 11 is communicated with the pipeline, when the pressure of liquid in the pipeline changes, the pressure change is transmitted to the linkage mechanism 3 through the second film 22 and the first film 21, the linkage mechanism 3 drives the micro-switch 4, and the micro-switch 4 is connected with the controller through a transmission circuit to control other electrical components such as a water pump, a spraying device and the like;
in the embodiment, a second membrane 22 is placed in the replacement ring 54, and a button in circuit communication with the electromagnet block 58 is arranged on the casing 1; in a high-irradiation environment, the second film 22 covers the outer side of the first film 21 and contacts with liquid in the pipeline, and the second film 22 protects the first film 21, so that when the second film 22 is damaged, a worker replaces the damaged second film 22; the worker rotates the push-down lever 52 first to move the support ring 13 downward and compress the support spring 14, so that the damaged second film 22 in the accommodating groove moves downward along with the support ring 13 and is separated from the first film 21, then the worker rotates the replacement screw rod 57 to move the sliding block 56 with the replacement ring 54 into the accommodating cavity 11, when the replacement ring 54 moves below the first film 21 with the new second film 22, the worker presses the button on the housing 1 to enable the electromagnet block 58 to be charged with current, the electromagnet block 58 generates magnetic force, the electromagnet block 58 above the second film 22 attracts the metal ring 59 in the second film 22, the second film 22 moves upwards and wraps the outer side of the first film 21, the second film 22 on the supporting ring 13 below the replacing ring 54 is adsorbed below the replacing ring 54 under the action of the magnet ring 53 below the replacing ring 54, then a worker rotates the replacing screw rod 57 reversely, so that the sliding block 56 moves into the storage cavity 55 with the replacing ring 54 and the second film 22 damaged below, then the worker rotates the pressing rod 52 reversely, so that the supporting ring 13 moves upwards until the supporting ring 13 contacts with the new second film 22, and the new second film 22 is extruded, so that the replacement of the second film 22 is completed;
according to the invention, the second membrane 22 is wrapped on the outer side of the first membrane 21, and when the pressure switch is used, the second membrane 22 replaces the first membrane 21 to be in contact with liquid in the accommodating cavity 11, and the second membrane 22 below the first membrane 21 is replaced periodically, so that the first membrane 21 is not damaged, and the sensitivity of the pressure switch is not affected.
Referring to fig. 4, 6 and 7 of the drawings, in this embodiment, a separating plate 6 is fixedly connected to the storage chamber 55; a placement block 61 is slidably connected to the storage chamber 55; the placement block 61 is screwed with a moving rod 62; the upper end of the moving rod 62 penetrates through the mounting block 51 and is in rotary sealing connection with the mounting block 51; the fixing blocks 63 are uniformly installed on the placement blocks 61 at intervals up and down; the fixed block 63 is provided with a groove; the second film 22 is clamped in the groove on the fixed block 63.
Referring to fig. 4 of the drawings, in this embodiment, the separating plate 6 is disposed obliquely downward.
Referring to fig. 6, 7 and 8 of the drawings, in this embodiment, the mounting base 64 is uniformly rotatably connected to the placement block 61; a torsion spring 65 is connected between the mounting seat 64 and the placement block 61; the mounting seat 64 is horizontally arranged and can only rotate upwards; both sides of the mounting seat 64 are hinged with the fixed block 63; a spiral groove 66 is formed on one side of the fixed block 63 hinged with the mounting seat 64; a sliding piece 67 is connected in a sliding way in the mounting seat 64; the sliding piece 67 is T-shaped, the lower end of the sliding piece 67 is exposed out of the mounting seat 64, and the left end and the right end of the sliding piece 67 are uniformly matched with the corresponding spiral grooves 66 in a sliding manner; two sets of placing blocks 61, moving rods 62, mounting seats 64, fixed blocks 63 and sliding pieces 67 are symmetrically arranged in the storage cavity 55.
Referring to fig. 4 and 6 of the drawings, in this embodiment, the pitch of the helical groove 66 is at least the height of two fixed blocks 63.
In this embodiment, when the replacement ring 54 moves into the storage chamber 55, the separation plate 6 in the storage chamber 55 in the second film 22 below the replacement ring 54 is blocked, so that when the second film 22 is staggered from the replacement ring 54, the second film 22 falls below the storage chamber 55; after the sliding block 56 moves into the storage cavity 55 with the replacement ring 54, the worker rotates the moving rod 62 again, so that the placement block 61 moves downwards with the second film 22 fixed on the placement block 61, the sliding piece 67 on the lowest mounting seat 64 is pushed by the replacement ring 54, and the sliding piece 67 rotates the fixed block 63 on the mounting seat 64 in a direction away from each other through sliding connection with the spiral groove 66 in the moving process, so that the second film 22 is separated from the fixed block 63, and the second film 22 falls into the replacement ring 54; after the second film 22 on the lowermost fixing block 63 is replaced below the first film 21, the worker rotates the moving rod 62, and continues to rotate the moving rod 62 after the lowermost mounting seat 64 contacts the replacement ring 54, so that the lowermost mounting seat 64 rotates upward against the torsion force of the torsion spring 65, and the lowermost mounting seat 64 does not block the penultimate mounting seat 64 from contacting the replacement ring 54; two groups of placing blocks 61, moving rods 62, mounting seats 64, fixing blocks 63 and sliding pieces 67 are arranged in the storage cavity 55, so that the stacked second film 22 is symmetrically clamped by the fixing blocks 63 in the storage cavity 55, the second film 22 is more stable in the storage cavity 55, and the situation that the second film 22 is separated from the fixing blocks 63 in the transportation process is reduced;
in this embodiment, the pitch of the spiral groove 66 is designed to be at least the height of two fixing blocks 63, so that the spiral line of the spiral groove 66 is steeper in the vertical direction, and the steeper spiral groove 66 has self-locking property, so that the fixing blocks 63 are not easy to push the sliding pieces 67 to move, and the sliding pieces 67 are easy to push the fixing blocks 63 to rotate, so that the fixing blocks 63 are not easy to shake during transportation, and the situation that the second film 22 is separated from the fixing blocks 63 is reduced;
according to the invention, the fixing blocks 63 are symmetrically arranged in the storage cavity 55, so that the second film 22 in the storage cavity 55 is fixed, the second film 22 is more stable in the storage cavity 55, and the situation that the second film 22 is separated from the fixing blocks 63 in the transportation process is reduced; meanwhile, the spiral line of the spiral groove 66 is steeper in the vertical direction, and the self-locking effect can be achieved.
Referring to fig. 3 of the specification, in this embodiment, a cavity opening of the accommodating cavity 11 communicating with the storage cavity 55 is fixedly connected with a back-shaped sealing opening 7; the sealing block 71 is rotatably connected with the cavity side of the square sealing opening 7 through the torsion spring 65; a drain screw hole 72 is formed below the mounting block 51; the drain screw hole 72 is communicated with the storage cavity 55, and the drain screw hole 72 is rotationally connected with a drain bolt 73; the seal block 71 is made of a flexible material such as rubber.
When the sliding block 56 moves towards the accommodating cavity 11 with the replacement ring 54, the replacement ring 54 pushes the sealing block 71 open and passes through the rectangular sealing opening 7 to enter the accommodating cavity 11, and the liquid in the accommodating cavity 11 also enters the storage cavity 55; when the sliding block 56 returns to the storage cavity 55 with the replacement ring 54, the sealing block re-seals the return seal opening 7 under the action of the torsion spring 65, then a worker screws out the drain bolt 73, so that the liquid in the storage cavity 55 is discharged from the drain screw hole 72, and the worker re-screws the drain bolt 73 into the drain screw hole 72, and under the action of the liquid pressure outside the sealing block, the sealing block tightly seals the return seal opening, so that the storage cavity 55 is in a state of not contacting the liquid in the accommodating cavity 11 when the invention is used;
the invention can ensure that the storage cavity 55 is not contacted with liquid when the invention is normally used by arranging the circular sealing port 7 and the sealing block 71 in the storage cavity 55, so that the invention can not leak liquid from the position where the movable rod 62 or the replacing screw rod 57 is rotationally connected with the mounting block 51 when in use, and can not influence the replacing ring 54 to extend into the accommodating groove to replace the second membrane 22.
Embodiment two:
on the basis of the first embodiment, referring to fig. 4 of the specification, in this embodiment, the upper end of one of the moving rods 62 in the storage chamber 55 is not exposed to the mounting block 51; the same driving belt 8 is sleeved between the two moving rods 62 in the storage cavity 55.
Referring to fig. 2 and 3 of the specification, in this embodiment, a blocking block 9 is fixedly connected to the supporting ring 13; the blocking piece 9 can block the cavity mouth of the accommodating cavity 11.
In this embodiment, two moving rods 62 are connected by a transmission belt 8, and when one of the moving rods 62 rotates, the other moving rod 62 also rotates, so that the two placement blocks 61 can move synchronously; in this embodiment, the blocking block 9 is fixedly connected below the supporting ring 13, so when the second membrane 22 is replaced, the supporting ring 13 moves downward, the blocking block 9 blocks the cavity opening communicated between the accommodating cavity 11 and the pipeline, so that pressure change in the pipeline can not be transmitted into the accommodating cavity 11 at this time, and the situation that the replacement failure is caused because the pressure change of liquid in the accommodating cavity 11 causes the second membrane 22 to separate from the replacing ring 54 in the process of replacing the second membrane 22 is prevented.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made therein without departing from the spirit and scope of the invention, which is defined by the appended claims; the scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. A high-precision radiation-resistant nuclear pressure switch comprises
A housing (1); a containing cavity (11) is formed in the shell (1); an elastic membrane (2), a linkage mechanism (3) and a micro switch (4) are arranged in the accommodating cavity (11); the cavity opening of the accommodating cavity (11) penetrates through the shell (1); a threaded interface (12) is arranged on the shell (1);
the elastic membrane (2) consists of a first membrane (21) and a second membrane (22), and the second membrane (22) is positioned below the first membrane (21); a supporting ring (13) is arranged in the accommodating cavity (11); the support ring (13) is positioned below the second membrane (22), and a support spring (14) is fixedly connected below the support ring (13); the supporting spring (14) is fixedly connected with the shell (1);
the method is characterized in that: a replacement mechanism (5) is arranged on the side edge of the shell (1); the replacing mechanism (5) is used for replacing the second film (22) when the second film (22) is damaged.
2. The high precision irradiation-resistant nuclear grade pressure switch of claim 1, wherein: the replacing mechanism (5) comprises a mounting block (51), a pressing rod (52), a magnet ring (53) and a replacing ring (54); the mounting block (51) is fixedly connected with the shell (1), and a storage cavity (55) is formed in the mounting block (51); the storage cavity (55) is communicated with the containing cavity (11); the side walls on two sides of the storage cavity (55) are connected with sliding blocks (56) in a sliding manner; the sliding block (56) is fixedly connected with the replacement ring (54), and a replacement screw rod (57) is connected to the sliding block (56) in a threaded manner; the upper end of the replacement screw rod (57) is rotationally connected with the mounting block (51) and exposes the mounting block (51); the magnet ring (53) is fixedly connected in the side of the replacement ring (54); an electromagnet block (58) is fixedly connected above the accommodating cavity (11);
the upper end of the lower pressing rod (52) penetrates through the shell (1) and is in rotary connection with the shell (1), and the lower end of the lower pressing rod (52) is provided with threads and is in threaded fit with the supporting ring (13); and a metal ring (59) is fixedly connected in the second membrane (22).
3. A high precision radiation resistant nuclear grade pressure switch as defined in claim 2, wherein: a separation plate (6) is fixedly connected in the storage cavity (55); a placement block (61) is connected in a sliding way in the storage cavity (55); the placing block (61) is connected with a moving rod (62) in a threaded manner; the upper end of the moving rod (62) penetrates through the mounting block (51) and is in rotary sealing connection with the mounting block (51); the fixed blocks (63) are uniformly arranged on the placing blocks (61) at intervals up and down; the side edge of the fixed block (63) is concavely arranged inwards; the second film (22) is clamped in the concave part of the fixed block (63).
4. A high precision irradiation resistant nuclear grade pressure switch as defined in claim 3, wherein: the separating plate (6) is arranged obliquely downwards.
5. The high-precision radiation-resistant nuclear pressure switch of claim 4, wherein: the placing block (61) is uniformly and rotatably connected with a mounting seat (64); a torsion spring (65) is connected between the mounting seat (64) and the placement block (61); the mounting seat (64) is horizontally arranged and can only rotate upwards; both sides of the mounting seat (64) are hinged with the fixed block (63); a spiral groove (66) is formed in one side, hinged with the mounting seat (64), of the fixed block (63); a sliding piece (67) is connected in a sliding way in the mounting seat (64); the sliding piece (67) is T-shaped, the lower end of the sliding piece (67) is exposed out of the mounting seat (64), and the left end and the right end of the sliding piece (67) are in sliding fit with the spiral grooves (66) which are uniformly corresponding to each other; two groups of the placing block (61), the moving rod (62), the mounting seat (64), the fixing block (63) and the sliding piece (67) in the storage cavity (55) are symmetrically arranged.
6. The high-precision radiation-resistant nuclear pressure switch of claim 5, wherein: the pitch of the spiral groove (66) is at least the height of two fixed blocks (63).
7. The high-precision radiation-resistant nuclear pressure switch of claim 6, wherein: the cavity opening of the accommodating cavity (11) communicated with the storage cavity (55) is fixedly connected with a circular sealing opening (7); the sealing block (71) is rotationally connected to one side of the cavity through the torsion spring (65) at the back-shaped sealing opening (7); a drain screw hole (72) is formed below the mounting block (51); the drain screw hole (72) is communicated with the storage cavity (55), and the drain screw hole (72) is rotationally connected with a drain bolt (73); the sealing block (71) is made of flexible material.
8. The high-precision radiation-resistant nuclear pressure switch of claim 7 wherein: the upper end of one of the moving rods (62) in the storage cavity (55) is not exposed out of the mounting block (51); the same transmission belt (8) is sleeved between the two movable rods (62) in the storage cavity (55).
9. The high precision irradiation-resistant nuclear grade pressure switch of claim 8, wherein: the support ring (13) is fixedly connected with a blocking block (9); the blocking block (9) can block the cavity opening of the accommodating cavity (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310403348.4A CN116130293B (en) | 2023-04-17 | 2023-04-17 | High-precision irradiation-resistant nuclear-grade pressure switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310403348.4A CN116130293B (en) | 2023-04-17 | 2023-04-17 | High-precision irradiation-resistant nuclear-grade pressure switch |
Publications (2)
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| CN116130293A true CN116130293A (en) | 2023-05-16 |
| CN116130293B CN116130293B (en) | 2023-06-20 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2009664A1 (en) * | 2007-06-04 | 2008-12-31 | Olab S.r.l. | Pressure switch with a metal membrane |
| CN205943931U (en) * | 2016-08-16 | 2017-02-08 | 杭州富阳中荷电子有限公司 | High -voltage switch |
| CN205984799U (en) * | 2016-08-28 | 2017-02-22 | 杭州富阳中荷电子有限公司 | Pressure control low pressure switch structure |
| CN215451229U (en) * | 2021-06-15 | 2022-01-07 | 苏州天邑喷宝消防科技有限公司 | Explosion-proof switch with adjusting function |
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2023
- 2023-04-17 CN CN202310403348.4A patent/CN116130293B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2009664A1 (en) * | 2007-06-04 | 2008-12-31 | Olab S.r.l. | Pressure switch with a metal membrane |
| CN205943931U (en) * | 2016-08-16 | 2017-02-08 | 杭州富阳中荷电子有限公司 | High -voltage switch |
| CN205984799U (en) * | 2016-08-28 | 2017-02-22 | 杭州富阳中荷电子有限公司 | Pressure control low pressure switch structure |
| CN215451229U (en) * | 2021-06-15 | 2022-01-07 | 苏州天邑喷宝消防科技有限公司 | Explosion-proof switch with adjusting function |
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| CN116130293B (en) | 2023-06-20 |
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