CN110864123A - Improved nitrogen making machine angle seat valve - Google Patents
Improved nitrogen making machine angle seat valve Download PDFInfo
- Publication number
- CN110864123A CN110864123A CN201911320020.6A CN201911320020A CN110864123A CN 110864123 A CN110864123 A CN 110864123A CN 201911320020 A CN201911320020 A CN 201911320020A CN 110864123 A CN110864123 A CN 110864123A
- Authority
- CN
- China
- Prior art keywords
- valve
- thread
- valve rod
- seat
- outer loop
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 47
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 23
- 210000004907 gland Anatomy 0.000 claims description 7
- 150000002829 nitrogen Chemical class 0.000 claims 1
- 238000005553 drilling Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
Images
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
- F16K1/32—Details
-
- 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
-
- 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
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/42—Valve seats
-
- 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
- F16K1/48—Attaching valve members to screw-spindles
- F16K1/487—Attaching valve members to screw-spindles by a fixing element extending in the axial direction of the spindle, e.g. a screw
Abstract
The invention belongs to the technical field of nitrogen making machines, and particularly relates to an improved nitrogen making machine angle seat valve which comprises a valve rod, a thread outer loop, a valve core and a soft valve seat; the end of the valve rod is provided with a boss which is matched with the inner diameter of one end of the thread outer loop, the inner diameter of the other end of the thread outer loop is provided with an internal thread, the valve core is provided with an external thread, the valve core is connected with the internal thread of the inner diameter of the thread outer loop through the external thread, and the valve core is embedded into a soft valve seat. The invention simplifies the connecting structure of the valve rod and the valve core, strengthens the connecting strength of the valve rod and the valve core, avoids causing valve failure, and ensures the nitrogen making machine to be stopped and maintained due to the valve failure, thereby ensuring the safe and stable operation of the nitrogen making machine.
Description
Technical Field
The invention belongs to the technical field of nitrogen making machines, and particularly relates to an improved nitrogen making machine angle seat valve.
Background
During the operation of the nitrogen making machine, the purity and the yield of the nitrogen making machine are often and suddenly reduced, and the reason is found to be that the pressure equalizing DN80 angle seat valve of the nitrogen making machine is broken at the connecting positioning hole and the thread of the valve rod and the valve seat through the stop inspection. Because the valve rod and the valve core of the angle seat valve have complex structures, the valve rod and the valve core are arranged in the outer movable sleeve by adopting the inner movable sleeve, the valve rod is in threaded connection with the inner movable sleeve, and the outer movable sleeve is in threaded connection with the valve core; a step exists at the joint of the valve rod and the thread inner loop through turning, so that local stress possibly exists; turning the thinned end part at the joint of the valve rod and the valve core to process threads and drill a positioning hole, so that the strength and toughness of the valve rod at the threaded drilling part are reduced, and the brittleness is enhanced, so that the valve rod is broken; valve rod screw thread department is interior loop clearance joint with case threaded connection's inside, and there are 4 guide posts in the case below, guarantee the case correct centering, this kind of structure can lead to the valve rod to have shear stress, the aggravation valve rod is at the fracture of weak department, the angle seat valve of this kind of valve rod structure moves after a period on line, must take place the valve rod and locate the fracture at the screw drilling, lead to though executor and valve rod action and case do not move together with the valve rod, lead to the valve failure, thereby arouse the voltage-sharing unusual, nitrogen generator purity and output decline, lead to nitrogen gas unqualified even, influence nitrogen generator normal work, there is the potential safety hazard in the operation.
Disclosure of Invention
According to the defects of the prior art, the invention aims to provide an improved nitrogen making machine angle seat valve, which can simplify the connection structure of a valve rod and a valve core and avoid causing valve faults to influence the operation of a nitrogen making machine.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: the improved nitrogen making machine angle seat valve comprises a valve rod, a thread outer loop, a valve core and a soft valve seat; the end of the valve rod is provided with a boss which is matched with the inner diameter of one end of the thread outer loop, the inner diameter of the other end of the thread outer loop is provided with an internal thread, the valve core is provided with an external thread, the valve core is connected with the internal thread of the inner diameter of the thread outer loop through the external thread, and the valve core is embedded into a soft valve seat.
Furthermore, a hollow groove is formed in one side, away from the thread outer loop, of the valve core, a positioning block is arranged in the hollow groove, the soft valve seat is assembled in the hollow groove of the valve core, a central through hole is formed in the soft valve seat, and the central through hole is matched with the positioning block for positioning.
Furthermore, a gland is arranged on one side, away from the valve core, of the soft valve seat, and the gland is connected to a central through hole of the soft valve seat through a positioning bulge and is fastened through a fastening bolt.
Furthermore, two plane grooves which are parallel to each other are processed at the position where the head end of the valve rod is connected with the piston.
Furthermore, the end face of one end, close to the valve rod, of the outer movable sleeve of the thread extends inwards to form a limiting bulge, and the limiting bulge limits a boss of the valve rod, so that the valve rod is not separated from the outer movable sleeve of the thread.
The invention has the beneficial effects that: the connecting structure of the valve rod and the valve core is simplified, the connecting strength of the valve rod and the valve core is strengthened, the valve fault is avoided, the nitrogen making machine is stopped and maintained due to the valve fault, and the nitrogen making machine is ensured to run safely and stably.
Drawings
FIG. 1 is a schematic view of a valve stem and valve cartridge connection;
FIG. 2 is a split view of a valve stem and valve core connection;
in the figure: 1. the valve comprises a valve rod, 2, a thread outer loop, 3, a valve core, 4, a soft valve seat, 5, a boss, 6, a hollow groove, 7, a positioning block, 8, a central through hole, 9, a gland, 10, a positioning bulge, 11, a fastening bolt, 12 and a plane groove.
In order to make the structure and function of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention.
Referring to the attached drawings 1-2, the improved nitrogen making machine angle seat valve comprises a valve rod 1, a thread outer loop 2, a valve core 3 and a soft valve seat 4; the end of the valve rod 1 is provided with a boss 5, the boss 5 is matched with the inner diameter of one end of the thread outer loop 2, the inner diameter of the other end of the thread outer loop 2 is provided with an inner thread, the valve core 3 is provided with an outer thread, the valve core 3 is connected with the inner thread of the inner diameter of the thread outer loop 2 through the outer thread, and the valve core 3 is embedded with a soft valve seat 4.
Furthermore, a hollow groove 6 is formed in one side, away from the thread outer loop 2, of the valve core 3, a positioning block 7 is arranged in the hollow groove 6, the soft valve seat 4 is assembled in the hollow groove 6 of the valve core, the soft valve seat 4 is provided with a central through hole 8, and the central through hole 8 is matched with the positioning block 7 for positioning.
Further, a gland 9 is arranged on one side of the soft valve seat 4 away from the valve core, and the gland 9 is connected to a central through hole 8 of the soft valve seat through a positioning bulge 10 and is fastened through a fastening bolt 11.
Furthermore, two plane grooves 12 which are parallel to each other are processed at the position where the head end of the valve rod 1 is connected with the piston.
1. According to the angle seat valve, through technical transformation, the structure of a more complex valve rod and valve core of the angle seat valve is changed into the structure of a simpler valve rod and valve core structure, the valve rod 1 is additionally provided with the boss 5 to be connected with the thread outer loop 2, the valve rod 1 penetrates through the thread outer loop 2 along the small-diameter end, the boss of the valve rod is limited at the position of the limiting bulge of the inner diameter of the end part of the thread outer loop 2, the end surface of the thread outer loop, close to one end of the valve rod, extends towards the inner diameter to form the limiting bulge, and the limiting bulge limits the boss of the valve rod, so that the valve rod 1 is not separated from the thread. The thread outer loop 2 is in threaded connection with the original valve core 3; only the structure of the valve rod 1 and the length of the thread outer loop are changed, the valve core is not changed, the lower guide post of the valve core is removed, and self-alignment positioning is adopted; the valve rod is additionally provided with the boss which is connected with the thread outer movable sleeve, so that turning processing is avoided, and local stress is avoided; the connecting part is not provided with a processing thread and a drilling hole, and a boss is added, so that the strength and the toughness of the valve rod are enhanced; the valve rod has small shearing stress by adopting self-alignment positioning without inner loop connection and removing a lower guide post of the valve core, so that the structure changes all the defects of the three valve rods. Meanwhile, two parallel small plane grooves 12 are milled at the lower end position, connected with the piston, of the upper end of the valve rod 1 by using a milling machine, the valve rod is conveniently clamped by using a wrench and used for fastening the upper end piston and an indicator, and the condition that the valve rod is broken does not occur when the angle seat valve of the valve rod structure after transformation operates on line is proved by practice.
The above list is only the preferred embodiment of the present invention. It is obvious that the invention is not limited to the above embodiments, but that many variations are possible. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the present invention are to be considered within the scope of the invention.
Claims (5)
1. Modified nitrogen generator angle seat valve, its characterized in that: comprises a valve rod, a thread outer loop, a valve core and a soft valve seat; the end of the valve rod is provided with a boss which is matched with the inner diameter of one end of the thread outer loop, the inner diameter of the other end of the thread outer loop is provided with an internal thread, the valve core is provided with an external thread, the valve core is connected with the internal thread of the inner diameter of the thread outer loop through the external thread, and the valve core is embedded into a soft valve seat.
2. The improved nitrogen generator angle seat valve of claim 1, wherein: the soft valve seat is provided with a central through hole, and the central through hole is matched and positioned with the positioning block.
3. An improved nitrogen generator angle seat valve as set forth in claim 2, wherein: one side of the soft valve seat, which is far away from the valve core, is provided with a gland, and the gland is connected to a central through hole of the soft valve seat through a positioning bulge and is fastened through a fastening bolt.
4. The improved nitrogen generator angle seat valve of claim 1, wherein: two plane grooves which are parallel to each other are processed at the position where the head end of the valve rod is connected with the piston.
5. The improved nitrogen generator angle seat valve of claim 1, wherein: the end face of one end, close to the valve rod, of the thread outer movable sleeve extends towards the inner diameter to form a limiting protrusion, and the limiting protrusion limits a valve rod boss, so that the valve rod is not separated from the thread outer movable sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911320020.6A CN110864123A (en) | 2019-12-19 | 2019-12-19 | Improved nitrogen making machine angle seat valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911320020.6A CN110864123A (en) | 2019-12-19 | 2019-12-19 | Improved nitrogen making machine angle seat valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110864123A true CN110864123A (en) | 2020-03-06 |
Family
ID=69659910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911320020.6A Pending CN110864123A (en) | 2019-12-19 | 2019-12-19 | Improved nitrogen making machine angle seat valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110864123A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06257678A (en) * | 1993-03-04 | 1994-09-16 | Mitsui Sekitan Ekika Kk | Valve device |
| CN102808994A (en) * | 2012-07-27 | 2012-12-05 | 苏州市东立机械有限公司 | Valve rod and valve core connection structure |
| CN203585369U (en) * | 2013-11-28 | 2014-05-07 | 青岛海菲勒气控阀门有限公司 | Valve core sealing structure of angle seat valve |
| CN109027261A (en) * | 2018-10-10 | 2018-12-18 | 德清恒升管件有限公司 | A kind of pneumatic angle pedestal valve door |
| CN208919375U (en) * | 2018-10-31 | 2019-05-31 | 天津宏瑞祥仪表科技股份有限公司 | A kind of regulating valve suitable for high temperature and high pressure condition |
| CN211315154U (en) * | 2019-12-19 | 2020-08-21 | 大连福佳·大化石油化工有限公司 | Improved nitrogen making machine angle seat valve |
-
2019
- 2019-12-19 CN CN201911320020.6A patent/CN110864123A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06257678A (en) * | 1993-03-04 | 1994-09-16 | Mitsui Sekitan Ekika Kk | Valve device |
| CN102808994A (en) * | 2012-07-27 | 2012-12-05 | 苏州市东立机械有限公司 | Valve rod and valve core connection structure |
| CN203585369U (en) * | 2013-11-28 | 2014-05-07 | 青岛海菲勒气控阀门有限公司 | Valve core sealing structure of angle seat valve |
| CN109027261A (en) * | 2018-10-10 | 2018-12-18 | 德清恒升管件有限公司 | A kind of pneumatic angle pedestal valve door |
| CN208919375U (en) * | 2018-10-31 | 2019-05-31 | 天津宏瑞祥仪表科技股份有限公司 | A kind of regulating valve suitable for high temperature and high pressure condition |
| CN211315154U (en) * | 2019-12-19 | 2020-08-21 | 大连福佳·大化石油化工有限公司 | Improved nitrogen making machine angle seat valve |
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