CN114382896B - Spring direct load type safety valve for low-temperature medium - Google Patents
Spring direct load type safety valve for low-temperature medium Download PDFInfo
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- CN114382896B CN114382896B CN202210047240.1A CN202210047240A CN114382896B CN 114382896 B CN114382896 B CN 114382896B CN 202210047240 A CN202210047240 A CN 202210047240A CN 114382896 B CN114382896 B CN 114382896B
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- 230000008878 coupling Effects 0.000 claims abstract description 6
- 238000010168 coupling process Methods 0.000 claims abstract description 6
- 238000005859 coupling reaction Methods 0.000 claims abstract description 6
- 230000007246 mechanism Effects 0.000 claims abstract description 6
- 230000000670 limiting effect Effects 0.000 claims description 24
- 229910001220 stainless steel Inorganic materials 0.000 claims description 10
- 239000010935 stainless steel Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 7
- 238000012856 packing Methods 0.000 claims 1
- 238000007789 sealing Methods 0.000 abstract description 13
- 238000009434 installation Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Classifications
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- 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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
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- 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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
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- 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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
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- 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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
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- 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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L23/00—Flanged joints
- F16L23/02—Flanged joints the flanges being connected by members tensioned axially
- F16L23/036—Flanged joints the flanges being connected by members tensioned axially characterised by the tensioning members, e.g. specially adapted bolts or C-clamps
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- 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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L23/00—Flanged joints
- F16L23/16—Flanged joints characterised by the sealing means
- F16L23/18—Flanged joints characterised by the sealing means the sealing means being rings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention provides a spring direct load type safety valve for a low-temperature medium, which belongs to the technical field of safety valves and comprises a first valve body; a first nut; the first nut is fixedly connected to the lower end of the first valve body; the upper end of the first nut is connected with a third flange, and the upper end of the third flange is fixedly connected with a second valve body; thereby through the coupling mechanism that is provided with makes when the relief valve can more convenient to detach and installation when using to make its practicality further promote, and thereby fix through fourth flange and fifth flange adoption bolt and make its stability further promote, thereby can add into between fourth flange and the fifth flange and have the sealing washer so that it can be more when using guarantee its sealing function.
Description
Technical Field
The invention belongs to the technical field of safety valves, and particularly relates to a spring direct load type safety valve for a low-temperature medium.
Background
The safety valve is a special valve which is in a normally closed state under the action of external force and prevents the medium pressure in the pipeline or the equipment from exceeding a specified value by discharging the medium to the outside of the system when the medium pressure in the equipment or the pipeline rises to exceed the specified value. The safety valve belongs to automatic valves, and is mainly used for boilers, pressure vessels and pipelines, and the control pressure does not exceed a specified value, so that the safety valve plays an important role in protecting personal safety and equipment operation. The safety valve plays a role in safety protection in the system. When the pressure of the system exceeds a specified value, the safety valve is opened, and part of gas/fluid in the system is discharged outside the atmosphere/pipeline, so that the pressure of the system does not exceed an allowable value, and the system is ensured not to be in accident due to the overhigh pressure.
In the prior art: in the use process of a general spring direct load type safety valve, although part of gas/fluid in a system can be discharged outside an atmosphere/pipeline when the pressure of the system exceeds a specified value, the safety valve cannot be well fixed and detached in use and is inconvenient to detach in use, so that the efficiency of workers in use is low.
Disclosure of Invention
The invention aims to provide a spring direct load type safety valve for a low-temperature medium, which aims to solve the problems that in the prior art, the spring direct load type safety valve can discharge a part of gas/fluid in a system to the outside of an atmosphere/pipeline when the pressure of the system exceeds a specified value in the use process, but the safety valve cannot be well fixed and detached in use and is inconvenient to detach in use, so that the efficiency of workers in use is low.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a spring direct load safety valve for a cryogenic medium, comprising:
a first valve body;
a first nut; the first nut is fixedly connected to the upper end of the first valve body;
the upper end of the first nut is connected with a third flange, and the upper end of the third flange is fixedly connected with a second valve body; and
the connecting mechanism comprises a fourth flange, a fifth flange, a connecting block, a circular column, a third arc-shaped opening, a first positioning block and an elastic component, wherein the fourth flange is fixedly connected to the upper end of the second valve body, the fifth flange is connected to the upper end of the fourth flange, the connecting block is fixedly connected to the upper end of the fifth flange, the circular column is fixedly connected to the upper end of the connecting block, the third arc-shaped opening is formed in the circumferential surface of the connecting block, the first positioning block is arranged in the third arc-shaped opening, and the elastic component is arranged in the second valve body to realize the safety valve load function.
As a preferable scheme of the invention, the elastic component comprises a valve rod, a limiting part, a spring, a first bottom limiting sleeve and a second top limiting sleeve, wherein the valve rod is arranged in the second valve body, the spring is sleeved and connected with the circumferential surface of the valve rod, the first bottom limiting sleeve is matched with the spring, the second top limiting sleeve is sleeved and connected with the circumferential surface of the valve rod, the second top limiting sleeve is matched with the spring, and the limiting part is arranged on the circumferential surface of the valve rod so as to fix the elastic component
As a preferable scheme of the invention, the limiting part comprises a first arc-shaped opening, a second connecting pipe, a thread groove, a bolt and a second positioning block, wherein the first arc-shaped opening is formed in the circumferential surface of the valve rod, the second connecting pipe is fixedly connected with the circumferential surface of the first valve body, the thread groove is formed in the side end of the second connecting pipe, the bolt is in threaded connection with the thread groove, and the second positioning block is connected with the first arc-shaped opening.
As a preferable scheme of the invention, the circumferential surface of the valve rod is connected with a second circular sleeve, the lower end of the second circular sleeve is fixedly connected with a sleeve block, the circumferential surface of the second circular sleeve is provided with a second arc-shaped opening, and the second arc-shaped opening is matched with a second positioning block.
As a preferable scheme of the invention, the upper end of the second arc-shaped opening is connected with a guide sleeve, the guide sleeve is connected with a first bottom limit sleeve, the circumferential inner wall of the first valve body is provided with a valve seat, and the valve seat is matched with the valve rod.
As a preferable scheme of the invention, the upper end of the sleeve block is connected with a second gasket, the lower end of the sleeve block is connected with a folding ring, and the folding ring is matched with the circumferential inner wall of the first valve body.
As a preferable scheme of the invention, the circumferential surface of the first valve body is fixedly connected with a first connecting pipe, the side end of the first connecting pipe is fixedly connected with a second flange, and the lower end of the first valve body is fixedly connected with a first flange.
As a preferable scheme of the invention, the lower end of the circumferential surface of the second top limit sleeve is fixedly connected with a first round washer, the upper end of the second top limit sleeve is fixedly connected with an adjusting sleeve, the adjusting sleeve is matched with the valve rod, the adjusting sleeve is internally and in threaded connection with a threaded column, the upper end of the threaded column is fixedly connected with a second connecting nut, and the second connecting nut is matched with the valve rod.
As a preferable scheme of the invention, the upper end of the second connecting nut is fixedly connected with a matching sleeve, the matching sleeve is matched with the valve rod, the circumferential surface of the valve rod is sleeved and connected with a first circular sleeve, and the first circular sleeve is connected with a second circular sleeve.
As a preferable scheme of the invention, the first valve body, the second valve body, the connecting block and the circular column are all made of stainless steel materials, and the circumferential diameters of the fourth flange and the fifth flange are equal.
Compared with the prior art, the invention has the beneficial effects that:
1. in the scheme, the method comprises the following steps: thereby through the coupling mechanism that is provided with makes when the relief valve can more convenient to detach and installation when using to make its practicality further promote, and thereby fix through fourth flange and fifth flange adoption bolt and make its stability further promote, thereby can add into between fourth flange and the fifth flange and have the sealing washer so that it can be more when using guarantee its sealing function.
2. In the scheme, the method comprises the following steps: thereby through the elastic component that is provided with makes the relief valve can work better this moment after the spring carries out concertina movement to make the result of use of relief valve further promote, the circumference surface of valve rod is located to first bottom stop collar and second top stop collar all overlaps and play and fix spacing effect with the spring, thereby makes when the spring can guarantee its stability better when carrying out the flexible, the stability that reinforcing was safe promotes the result of use of relief valve.
3. In the scheme, the method comprises the following steps: thereby through the spacing subassembly that is provided with makes when the relief valve is carrying out the during operation can be more stable for the relief valve is flexible after the work, makes first arc opening carry out spacing wherein with the second locating piece better, makes the stability of spring further promote.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
FIG. 1 is an exploded view of the present invention;
FIG. 2 is a perspective view of a first view of the present invention;
FIG. 3 is a second perspective view of the present invention;
FIG. 4 is a perspective cross-sectional view of the present invention;
FIG. 5 is an enlarged view of a portion of the invention at A in FIG. 4;
FIG. 6 is a first perspective partial exploded view of the present invention;
FIG. 7 is a second perspective partial exploded view of the present invention;
fig. 8 is a third perspective view of the present invention.
In the figure: 1. a first flange; 2. a first valve body; 3. a first nut; 4. a first connection pipe; 5. a second flange; 6. a second valve body; 7. a third flange; 8. a fourth flange; 9. a fifth flange; 10. a connecting block; 11. a circular column; 12. a third arcuate opening; 13. a first positioning block; 14. a valve stem; 15. a first circular sleeve; 16. a first arcuate opening; 17. sleeving blocks; 18. a second circular sleeve; 19. a second arcuate opening; 20. a second positioning block; 21. a guide sleeve; 22. a first bottom stop collar; 23. a first circular washer; 24. a second top stop collar; 25. an adjusting sleeve; 26. a spring; 27. a second gasket; 28. folding the ring; 29. a valve seat; 30. a second connection pipe; 31. a thread groove; 32. a bolt; 33. matching the matching sets; 34. a second coupling nut; 35. and (5) a threaded column.
Description of the embodiments
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.
Referring to fig. 1-8, the present invention provides the following technical solutions:
a spring direct load safety valve for a cryogenic medium, comprising:
a first valve body 2;
a first nut 3; the first nut 3 is fixedly connected to the upper end of the first valve body 2;
the upper end of the first nut 3 is connected with a third flange 7, and the upper end of the third flange 7 is fixedly connected with a second valve body 6; and
the connecting mechanism comprises a fourth flange 8, a fifth flange 9, a connecting block 10, a circular column 11, a third arc-shaped opening 12, a first positioning block 13 and an elastic component, wherein the fourth flange 8 is fixedly connected to the upper end of the second valve body 6, the fifth flange 9 is connected to the upper end of the fourth flange 8, the connecting block 10 is fixedly connected to the upper end of the fifth flange 9, the circular column 11 is fixedly connected to the upper end of the connecting block 10, the third arc-shaped opening 12 is formed in the circumferential surface of the connecting block 10, the first positioning block 13 is arranged in the third arc-shaped opening 12, and the elastic component is arranged in the second valve body 6 to realize the safety valve load function.
In the specific embodiment of the invention, the first valve body 2 is made of stainless steel materials, so that the stability of the first valve body 2 can be better ensured when the first valve body 2 works, the service life of the safety valve is prolonged, the first nut 3 plays a role in connecting the first valve body 2 with the second flange 5, the third flange 7 plays a role in facilitating the installation and the disassembly of the safety valve after the first nut 3 is in threaded connection with the first nut, the safety valve can be more convenient to operate and maintain when in use, the practicability and the stability of the safety valve are further improved, the safety valve can be more convenient to detach and install when in use through the connecting mechanism, the practicability of the safety valve is further improved, the safety valve is further improved through the fixing of the fourth flange 8 and the fifth flange 9 by bolts, a sealing ring can be added between the fourth flange 8 and the fifth flange 9 to ensure the sealing function of the safety valve when the safety valve is used, wherein the fourth flange 8 and the fifth flange 9 are fixed by adopting the same plurality of groups of bolts to ensure the safety valve to be more stable when the safety valve is used, the connecting block 10 is used for fixing the round column 11, the round column 11 is used for sealing the matching sleeve 33, the round column 11 and the connecting block 10 are made of stainless steel materials, so that the safety valve can be safer when the safety valve is used, the third arc-shaped opening 12 is used for fixing the first positioning block 13, the first positioning block 13 can be made of stainless steel materials, so that the safety valve can be more stable when the safety valve is fixed, the round groove is formed at the side end of the first positioning block 13, a limit bolt can be arranged in the circular groove, so that the first positioning block 13 can be better fixed after being inserted into the third arc-shaped opening 12.
Referring to fig. 1-6 specifically, the elastic component includes a valve stem 14, a limiting component, a spring 26, a first bottom limiting sleeve 22 and a second top limiting sleeve 24, where the valve stem 14 is disposed in the second valve body 6, the spring 26 is sleeved on the circumferential surface of the valve stem 14, the first bottom limiting sleeve 22 is matched with the spring 26, the second top limiting sleeve 24 is sleeved on the circumferential surface of the valve stem 14, the second top limiting sleeve 24 is matched with the spring 26, and the limiting component is disposed on the circumferential surface of the valve stem 14 to fix the elastic component.
In this embodiment: the safety valve can work better at this time after the spring 26 stretches out and draws back through the elastic component that is provided, thereby make the result of use of safety valve further promote, wherein it is not too much description in this prior art to the person skilled in the art that the spring 26 stretches out and draws back afterwards carries out work with the safety valve, wherein the valve rod 14 adopts stainless steel to make, thereby make its life further promote when the valve rod 14 is assembled and is connected with the safety valve, spring 26 plays and can ensure its result of use better when the safety valve is used, the result of use of safety valve is strengthened, first bottom stop collar 22 and second top stop collar 24 all overlap the circumference surface of valve rod 14 and play and fix the limiting action with spring 26, thereby make it guarantee its stability better when spring 26 stretches out and draws back, the result of use of safety valve is promoted to the stability of reinforcing safety.
Referring to fig. 1-8, the limiting component includes a first arc opening 16, a second connecting pipe 30, a threaded groove 31, a bolt 32 and a second positioning block 20, wherein the first arc opening 16 is formed on a circumferential surface of the valve rod 14, the second connecting pipe 30 is fixedly connected to the circumferential surface of the first valve body 2, the threaded groove 31 is formed at a side end of the second connecting pipe 30, the bolt 32 is in threaded connection with the threaded groove 31, and the second positioning block 20 is connected with the first arc opening 16.
In this embodiment: thereby through the spacing subassembly that is provided with so that can be more stable when the relief valve is carrying out the during operation for the relief valve is flexible after the operation of spring 26 makes first arc opening 16 carry out spacing wherein with second locating piece 20 better, make the stability of spring 26 further promote, wherein first arc opening 16 and second arc opening 19 all play the realization and fix the effect with second locating piece 20, thereby second locating piece 20 play the realization and fix cover piece 17 and guarantee when the relief valve is carrying out the use and can guarantee its stability better, second connecting pipe 30 play the realization and offer the effect with screw groove 31, screw groove 31 play the realization and fix bolt 32 better.
Referring to fig. 1 specifically, a second circular sleeve 18 is connected to a circumferential surface of the valve stem 14, a sleeve block 17 is fixedly connected to a lower end of the second circular sleeve 18, a second arc-shaped opening 19 is formed in the circumferential surface of the second circular sleeve 18, and the second arc-shaped opening 19 is matched with a second positioning block 20.
In this embodiment: the second circular sleeve 18 is used for guaranteeing that the sleeve block 17 can perform following rotation after the valve rod 14 can be better matched with the circular sleeve, the sleeve block 17 is used for connecting the valve rod 14, the valve rod 14 can better finish the use of the safety valve, and the second arc-shaped opening 19 is used for fixing the second positioning block 20.
Referring to fig. 1 specifically, the upper end of the second arc opening 19 is connected with a guide sleeve 21, the guide sleeve 21 is connected with a first bottom limit sleeve 22, a valve seat 29 is disposed on the circumferential inner wall of the first valve body 2, and the valve seat 29 is matched with the valve stem 14.
In this embodiment: the guide sleeve 21 plays a role in connecting the first bottom limiting sleeve 22, and the first bottom limiting sleeve 22 is connected through the guide sleeve 21, so that the safety valve can be more stable when in use.
Referring to fig. 2 and 4 specifically, the upper end of the sleeve block 17 is connected with a second gasket 27, the lower end of the sleeve block 17 is connected with a folding ring 28, and the folding ring 28 is matched with the circumferential inner wall of the first valve body 2.
In this embodiment: the second gasket 27 plays a role in guaranteeing stability of the sleeve block 17 when the sleeve block 17 rotates along with the valve rod 14, so that safety can be improved when the safety valve is used, the folding ring 28 plays a role in further fixing the sleeve block 17, stability of the sleeve block 17 is further improved, the valve rod 14 can rotate in the safety valve better through matching of the folding ring 28 and the first valve body 2, and the use effect of the safety valve is further improved.
Referring to fig. 4 and fig. 1 specifically, a first connecting pipe 4 is fixedly connected to a circumferential surface of the first valve body 2, a second flange 5 is fixedly connected to a side end of the first connecting pipe 4, and a first flange 1 is fixedly connected to a lower end of the first valve body 2.
In this embodiment: the first connecting pipe 4 plays a role in fixing the second flange 5, the first connecting pipe 4 is made of stainless steel, the inside of the first connecting pipe 4 is of a cavity structure, so that the safety valve can be better conveyed when being used, the safety valve is more stable, the second flange 5 plays a role in connecting the safety valve with the outside, the first flange 1 plays a role in better connecting the safety valve, and the first flange 1 and the second flange 5 are made of stainless steel, so that the service life of the safety valve can be better guaranteed after the safety valve is used for a long time.
Referring to fig. 1-8 specifically, the lower end of the circumferential surface of the second top stop collar 24 is fixedly connected with a first circular washer 23, the upper end of the second top stop collar 24 is fixedly connected with an adjusting collar 25, the adjusting collar 25 is matched with the valve rod 14, the adjusting collar 25 is internally and threadedly connected with a threaded post 35, the upper end of the threaded post 35 is fixedly connected with a second connecting nut 34, and the second connecting nut 34 is matched with the valve rod 14.
In this embodiment: the first circular washer 23 plays a role in realizing that when the spring 26 is sleeved on the circumferential surface of the valve rod 14, the spring 26 can be better limited by the first circular washer 23, when the adjusting sleeve 25 is matched with the threaded column 35, the threaded column 35 can be better guaranteed to carry the valve rod 14 to perform a vertical movement function after rotating, so that the safety valve can work better, and the second connecting nut 34 plays a role in realizing better matching of the threaded column 35 and the valve rod 14.
Referring to fig. 1-8 specifically, a matching sleeve 33 is fixedly connected to the upper end of the second connecting nut 34, the matching sleeve 33 is matched with the valve rod 14, a first circular sleeve 15 is sleeved on the circumferential surface of the valve rod 14, and the first circular sleeve 15 is connected with the second circular sleeve 18.
In this embodiment: the matching sleeve 33 performs a better matching function with the valve rod 14, the first circular sleeve 15 performs a better limiting function with the second arc-shaped opening 19, and the first circular sleeve 15 limits the second arc-shaped opening 19 so that stability of the valve rod 14 can be better guaranteed after the valve rod 14 moves, and the first circular sleeve 15 and the second circular sleeve 18 perform matching, so that the safety valve can be more stable when in use.
Referring to fig. 1-4, the first valve body 2, the second valve body 6, the connecting block 10 and the circular column 11 are made of stainless steel materials, and the diameters of the circumferences of the fourth flange 8 and the fifth flange 9 are equal.
In this embodiment: all adopt stainless steel material to make through first valve body 2, second valve body 6, connecting block 10 and circular column 11 to make the manufacturing cost of relief valve further reduce, and more stable, match through fourth flange 8 and fifth flange 9, thereby make the relief valve can be more stable when using.
The working principle and the using flow of the invention are as follows: firstly, the centers of the fourth flange 8 and the fifth flange 9 are fixedly connected with each other by adding a sealing ring and then fixing the sealing rings by bolts, at this time, the third flange 7 and the first nut 3 are connected with each other by threads, after the threaded fixing is completed, the first flange 1 and the second flange 5 are connected with the outside by threads, the safety valve can be used, when the safety valve is used, the safety valve can be matched with the adjusting sleeve 25 by rotating the second connecting nut 34 through the threaded column 35, the adjusting sleeve 25 is connected with the valve rod 14, when the valve rod 14 moves, the first circular sleeve 15 fixedly connected with the lower end of the valve rod 14 is moved by the second circular sleeve 19, the second positioning block 20 is limited by the second circular sleeve 19, so that the stability of the valve rod 14 can be better guaranteed after the valve rod 14 moves, then the valve seat 29 in the first valve body 2 is opened and closed by the expansion of the spring 26, the safety valve is used, the safety valve can be more conveniently detached and installed when the safety valve is used, the practicability of the safety valve is further improved, and the sealing rings can be further improved by adopting the fourth flange 8 and the fifth flange 9, and the sealing rings can be further improved, and the stability of the sealing rings can be further improved when the sealing rings are further improved by adopting the fourth flange 9.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A spring direct load type safety valve for a low-temperature medium is characterized in that: comprising the following steps:
a first valve body (2);
a first nut (3); the first nut (3) is fixedly connected to the upper end of the first valve body (2);
the upper end of the first nut (3) is connected with a third flange (7), and the upper end of the third flange (7) is fixedly connected with a second valve body (6); and
the connecting mechanism comprises a fourth flange (8), a fifth flange (9) connecting block (10), a circular column (11), a third arc-shaped opening (12), a first positioning block (13) and an elastic component, wherein the fourth flange (8) is fixedly connected to the upper end of the second valve body (6), the fifth flange (9) is connected to the upper end of the fourth flange (8), the connecting block (10) is fixedly connected to the upper end of the fifth flange (9), the circular column (11) is fixedly connected to the upper end of the connecting block (10), the third arc-shaped opening (12) is formed in the circumferential surface of the connecting block (10), the first positioning block (13) is arranged in the third arc-shaped opening (12), the elastic component is arranged in the second valve body (6) to realize a safety valve load function, the elastic component comprises a valve rod (14), a limiting component, a spring (26), a first bottom limiting sleeve (22) and a second top limiting sleeve (24), the valve rod (14) is arranged in the second valve body (6), the spring (26) is arranged in the circumferential surface of the valve rod (14) and is connected to the bottom (26) through the first limiting sleeve (22), the second top limit sleeve (24) is sleeved and connected to the circumferential surface of the valve rod (14), the second top limit sleeve (24) is matched with the spring (26), the limit part is arranged on the circumferential surface of the valve rod (14) to fix the elastic component, the limit part comprises a first arc opening (16), a second connecting pipe (30), a thread groove (31), a bolt (32) and a second locating block (20), the first arc opening (16) is formed in the circumferential surface of the valve rod (14), the second connecting pipe (30) is fixedly connected to the circumferential surface of the first valve body (2), the thread groove (31) is formed in the side end of the second connecting pipe (30), the bolt (32) is in threaded connection with the thread groove (31), the second locating block (20) is connected with the first arc opening (16), the lower end of the second arc opening (18) is fixedly connected with a sleeve block (17), the second arc opening (19) is formed in the circumferential surface of the second arc opening (18), the second arc opening (19) is connected with the second arc opening (19), a valve seat (29) is arranged on the circumferential inner wall of the first valve body (2), and the valve seat (29) is matched with the valve rod (14).
2. A spring direct load type safety valve for a cryogenic medium according to claim 1, characterized in that: the upper end of the sleeve block (17) is connected with a second gasket (27), the lower end of the sleeve block (17) is connected with a folding ring (28), and the folding ring (28) is matched with the circumferential inner wall of the first valve body (2).
3. A spring direct load type safety valve for a cryogenic medium according to claim 2, characterized in that: the novel valve is characterized in that a first connecting pipe (4) is fixedly connected to the circumferential surface of the first valve body (2), a second flange (5) is fixedly connected to the side end of the first connecting pipe (4), and a first flange (1) is fixedly connected to the lower end of the first valve body (2).
4. A spring direct load type safety valve for a cryogenic medium according to claim 3, characterized in that: the utility model discloses a valve rod, including first top stop collar (24), second top stop collar (24), first circular packing ring (23) of circumference surface lower extreme fixedly connected with, the upper end fixedly connected with adjustment sleeve (25) of second top stop collar (24), adjustment sleeve (25) and valve rod (14) assorted, adjustment sleeve (25) internal thread is connected with screw thread post (35), the upper end fixedly connected with second coupling nut (34) of screw thread post (35), second coupling nut (34) and valve rod (14) assorted.
5. The spring-loaded direct relief valve for cryogenic media of claim 4, wherein: the upper end fixedly connected with of second coupling nut (34) matches cover (33), match cover (33) and valve rod (14) phase-match, the circumference surface cover of valve rod (14) is established and is connected with first circular cover (15), first circular cover (15) are connected with second circular cover (18).
6. The spring direct load type safety valve for a cryogenic medium according to claim 5, characterized in that: the first valve body (2), the second valve body (6), the connecting block (10) and the circular column (11) are made of stainless steel materials, and the circumferential diameters of the fourth flange (8) and the fifth flange (9) are equal.
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| CN2022100329687 | 2022-01-12 | ||
| CN202210032968 | 2022-01-12 |
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| CN114382896B true CN114382896B (en) | 2023-10-27 |
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| CN114382896A (en) | 2022-04-22 |
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