CN207661178U - A kind of low-temperature safety valve - Google Patents
A kind of low-temperature safety valve Download PDFInfo
- Publication number
- CN207661178U CN207661178U CN201721924225.1U CN201721924225U CN207661178U CN 207661178 U CN207661178 U CN 207661178U CN 201721924225 U CN201721924225 U CN 201721924225U CN 207661178 U CN207661178 U CN 207661178U
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- adjusting
- fixed seat
- pressuring handle
- safety valve
- pressure
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Abstract
The utility model discloses a kind of low-temperature safety valve, including valve body, and valve body is equipped with the leakage path of flow channel and discharge, and two channels are isolated by the gasket of the piston component lower face in valve body；Further include the pressure regulating mechanism for regulation safety valve setting value, pressure regulating mechanism includes adjusting pressuring handle, adjusts fixed seat, adjusting screw, adjusting nut, spring, spring base；Fixed seat is adjusted to be fixedly connected on valve body, adjusting pressuring handle, which is movably arranged on, to be adjusted in fixed seat, the upper end of adjusting screw, which is pierced by, to be adjusted fixed seat and is connected on adjusting pressuring handle, spring is equipped between spring base and adjusting screw, spring base bottom surface is connect with piston component using spherical surface；The utility model uses spherical surface connection to make more precisely to stablize when safety valve pressure setting value to eliminate spring supporting face unbalance stress, and can realize flexible and convenient accurately regulation safety valve pressure set points using the pressure regulating mechanism with spring and piston component.
Description
Technical field
The utility model is related to valve technology fields, and in particular to a kind of low-temperature safety valve.
Background technology
Safety valve is a kind of automatic open close according to media operation pressure, plays the valve of safeguard protection, is very heavy
The safe component wanted is widely used in various pressure vessels and pipes systems；When system pressure is more than specified value, safety
Valve is opened, by system a part of gas or fluid be drained into outside air or pipeline, so that pressure in system is no more than allows
Value, to ensure that because of hypertonia accident does not occur for system.
The Chinese document CN203836307U (applyings date：On 04 21st, 2014) disclose a kind of piston type ultralow temperature safety
Valve, including valve body, the valve opening that perforation valve body is provided in valve body, the gasket being arranged in valve opening, the valve of one end of gasket
It is equipped in hole into liquid state channel interface, the other end is equipped with piston, and the outlet end of the valve body is provided with adjusting screw, living
It is provided with spring between plug and adjusting screw, piston installation site is corresponded on the valve body and is provided with screw hole, in screw hole
It is provided with the positioning screw for preventing piston rotation, the position that the piston side face corresponds to positioning screw is provided with bayonet,
The end of the positioning screw is stuck in the bayonet；There are skies between the side wall of the piston and the inner wall of valve body
Gap, which solve piston under cryogenic be easy to block cause safety valve cannot open or safety valve open after cannot reset pass
The problem of closing, but when needing to change safety valve setting pressure value more have inconvenience, and unbalance stress is easy between spring and piston
Cause setup pressure value unstable.
Therefore, how to improve, upgrade existing low-temperature safety valve arrangement, realization can flexible modulation safety valve pressure setting value and
It is one of the important subject of research staff in current low-temperature safety valve arrangement to keep safety valve setting value precise and stable etc..
Utility model content
In view of the deficiencies of the prior art, the utility model provides a kind of low-temperature safety valve, and what is mainly solved is existing
Low-temperature safety valve in technology cannot be flexible and convenient change pressure set points and because between spring and piston be easy stress not
The technical problems such as cause pressure set points unstable.
In order to achieve the above objectives, the utility model is achieved through the following technical solutions：
A kind of low-temperature safety valve, including valve body, the valve body are equipped with the inflow flowed into for fluid media (medium) through valve body
Channel and leakage path for fluid media (medium) discharge, the flow channel and leakage path are by the piston group that is located in the valve body
The seal face of part is isolated；Further include the pressure regulating mechanism for regulation safety valve setting value, the pressure adjusts machine
Structure includes adjusting pressuring handle, the adjusting fixed seat of inner hollow, adjusting screw, adjusting nut, spring, spring base；It is described to adjust admittedly
Reservation is fixedly connected on the valve body, and the adjusting pressuring handle is movably arranged in the adjusting fixed seat, the adjusting nut
Be threaded in the adjusting screw and be set on together in the adjusting fixed seat, and the upper end of adjusting screw be pierced by it is described
It adjusts fixed seat and drives adjusting screw to rotate when being connected on the adjusting pressuring handle to rotate the adjusting pressuring handle and then adjust
The position of the whole adjusting nut；The spring is set in the adjusting screw, and spring one end is against on the adjusting nut,
The other end is against on the spring base, and the spring base bottom surface uses spherical surface to connect to eliminate bullet with the piston component upper surface
Spring supporting surface unbalance stress makes to change spring force size adjustment peace when rotating the adjusting pressuring handle drive adjusting screw rotation
More precisely stablize when full valve pressure set points, the piston when the pressure of the fluid media (medium) of input is more than safety valve setting value
Component can make the flow channel and leakage path conducting that safety valve be made to open pressure release by open-top, and fluid media (medium) is by the valve body
Interior piston component partition makes the fluid media (medium) when safety valve opens pressure release may not flow into the pressure regulating mechanism.
Further, the adjusting pressuring handle engages positioning by circular orientation tooth to ensure to adjust pressure with the adjusting fixed seat
It is constant that power sets value stabilization.
Further, the adjusting pressuring handle is equipped with several elastic card angles, and the adjusting fixed seat is equipped with and the bullet
Property matched first card slot in card angle and the second card slot, the adjusting pressuring handle by the activity of elastic card angle be fastened on it is described adjust it is solid
In reservation, when the elastic card angle of the adjusting pressuring handle is stuck on second card slot, the adjusting pressuring handle is adjusted admittedly with described
Matched circular orientation tooth keeps engagement to make the relatively described adjusting fixed seat of the adjusting pressuring handle not rotatably to protect in reservation
Card adjust pressure set points stablize it is constant, when up pushing away the adjusting pressuring handle elastic card angle being made to be stuck on first card slot,
The adjusting pressuring handle is disengaged from matched circular orientation tooth in the adjusting fixed seat keeps the adjusting pressuring handle opposite
It is described to adjust fixed seat rotation to drive adjusting screw to rotate and then adjust the position of the adjusting nut.
Further, the adjusting screw is equipped with limit protrusion, and limit protrusion coordinates the spring to be stuck in adjusting screw
It adjusts in fixed seat, the upper end of adjusting screw is pierced by the adjusting fixed seat and is connected with the adjusting pressuring handle activity by plugging together
It connects, and so that elastic card angle is stuck on first card slot and when rotating pressure regulation when above pushing away the adjusting pressuring handle, the adjusting screw
It is followed by adjusting pressuring handle relative adjustment fixed seat and does axial rotation so as to regulation safety valve setting value, and the adjusting screw phase
It will not be shifted up and down to adjusting fixed seat to ensure that it is constant that pressure set points are stablized.
Further, the pressure regulating mechanism further includes locking nut, the locking nut and the adjusting pressuring handle and tune
Section fixed seat is threadedly coupled, and the adjusting pressuring handle makes the pressure regulation by the locking connection of locking nut and the adjusting fixed seat
Handle relative adjustment fixed seat cannot shift to make the adjusting pressuring handle and matched ring in the adjusting fixed seat up and down
Shape positioning tooth keeps engagement to ensure that it is constant that pressure set points are stablized.
Low-temperature safety valve described in the utility model is adjusted by rotating adjusting pressuring handle and adjusting screw is driven to rotate and is adjusted
The position of section nut makes change spring force size to realize flexibly the quickly size of regulation safety valve setup pressure value；Spring
Seat bottom surface with piston component upper surface uses spherical surface to connect to eliminate spring supporting face unbalance stress, can automatic centering adjusting stress
Safety valve pressure setting value is set more precisely to stablize.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model embodiment.
Fig. 2 is the adjusting pressuring handle dimensional structure diagram of the utility model embodiment.
Fig. 3 is the valve body of the utility model embodiment and adjusts the dimensional structure diagram of fixed seat.
Fig. 4 is the adjusting pressuring handle of the utility model embodiment and the assembling schematic diagram of adjusting screw.
Fig. 5 is the dimensional structure diagram of the adjusting fixed seat of the utility model embodiment.
Fig. 6 is the valve inner structural schematic diagram of the utility model embodiment.
Label declaration：
1, valve body；
11, flow channel, 12, leakage path, 13, piston component；
2, pressure regulating mechanism；
21, adjusting pressuring handle, 22, adjust fixed seat, 23, adjusting screw, 24, adjusting nut, 25, spring 26, spring base,
27, locking nut；
211 elastic card angles, the 221, first card slot, the 222, second card slot.
Specific implementation mode
The utility model is further described with reference to the accompanying drawings and embodiments.
Attached drawing 1 is please referred to attached drawing 6, in the utility model embodiment, a kind of low-temperature safety valve, including valve body 1, valve body 1
It is equipped with the flow channel 11 flowed into for fluid media (medium) through valve body and the leakage path 12 be discharged for fluid media (medium), inflow is led to
Road 11 and leakage path 12 are isolated by the gasket for 13 lower face of piston component being located in valve body 1；Further include for adjusting
The pressure regulating mechanism 2 of safety valve setting value is saved, pressure regulating mechanism 2 includes that the adjusting of adjusting pressuring handle 21, inner hollow is fixed
Seat 22, adjusting screw 23, rectangular adjusting nut 24, spring 25, spring base 26 adjust fixed seat 22 and are fixedly connected on valve body 1
On, adjusting pressuring handle 21, which is movably arranged on, to be adjusted in fixed seat 22, and adjusting nut 24 is threaded in adjusting screw 23 and together
It is set on and adjusts in fixed seat 22, it is rectangular to adjust 22 inside of fixed seat, and adjusting nut 24 can only edge in adjusting fixed seat 22
Adjusting screw 23 moves up and down and is unable to left-right rotation, and the upper end of adjusting screw 23 is pierced by and adjusts fixed seat 22 and be connected to tune
It drives adjusting screw 23 to rotate when pressing on handle 21 to rotate adjusting pressuring handle 21 and then adjusts the position of adjusting nut 24；Spring
25 are set in adjusting screw 23, and 25 one end of spring is against on adjusting nut 24, and the other end is against on spring base 26, spring base 26
Bottom surface uses spherical surface to connect with 13 upper surface of piston component to be made with eliminating spring supporting face unbalance stress when rotation adjusting pressuring handle 21
The rotation of adjusting screw 23 is driven more precisely to stablize to change when 25 elastic force of spring adjusts safety valve pressure setting value, when defeated
Piston component 13 can make flow channel 11 and leakage path by open-top when the pressure of the fluid media (medium) entered is more than safety valve setting value
12 conductings make safety valve open pressure release, and fluid media (medium) is made to open when safety valve by the partition of piston component 13 in the valve body 1
Fluid media (medium) may not flow into ensure that pressure regulating mechanism 2 is not corroded by fluid media (medium) in the pressure regulating mechanism 2 when pressure release,
Extend safety valve service life.
Please refer to attached drawing 1, attached drawing 2, attached drawing 3, in the utility model embodiment, adjusting pressuring handle 21 by circular orientation tooth with
The engagement of fixed seat 22 positioning is adjusted to ensure that it is constant that adjusting pressure set points are stablized.
Attached drawing 1 is please referred to attached drawing 4, in the utility model embodiment, adjusting pressuring handle 21 is equipped with several elastic card angles
211, it adjusts fixed seat 22 and is equipped with and 211 matched first card slot of elastic card angle, 221 and second card slot 222, adjusting pressuring handle
21 are fastened on by 211 activity of elastic card angle in adjusting fixed seat 22, when the elastic card angle 211 of adjusting pressuring handle 21 is stuck in the second card
When on slot 222, adjusting pressuring handle 21 keeps engaging making 21 phase of adjusting pressuring handle with matched circular orientation tooth in fixed seat 22 is adjusted
Rotatably do not stablize constant to ensure to adjust pressure set points to adjusting fixed seat 22, makes elastic card when up pushing away adjusting pressuring handle 21
When angle 211 is stuck on the first card slot 221, adjusting pressuring handle 21 is disengaged from matched circular orientation tooth in fixed seat 22 is adjusted
Make adjusting pressuring handle 21 can relative adjustment fixed seat 22 rotation with drive adjusting screw 23 rotate so that adjust adjusting nut 24 position
Setting makes the compression degree of change spring 25 with regulation safety valve pressure set points.
Attached drawing 1 is please referred to attached drawing 4, in the utility model embodiment, adjusting screw 23 is equipped with limit protrusion, limit convex
It plays cooperation spring 25 adjusting screw 23 is stuck in adjusting fixed seat 22, the upper end of adjusting screw 23, which is pierced by, adjusts fixed seat 22 simultaneously
It is flexibly connected with adjusting pressuring handle 21 by plugging together, the upper end of adjusting screw 23 is square, and adjusting pressuring handle 21 is equipped with to adjust
The rectangular inserting hole that 23 upper end of screw is inserted into and adjusting screw 21 can be driven to rotate together, and push adjusting pressuring handle 21 to make bullet up and down
23 relative adjustment fixed seat 22 of adjusting screw all will not when property card angle 211 is stuck in the first card slot 221 or is stuck on the second card slot 222
The displacement but rectangular upper end of adjusting screw 23 still plugs together and is connected on adjusting pressuring handle 21 up and down, makes bullet when above pushing away adjusting pressuring handle 21
When property card angle 211 is stuck on the first card slot 221 and rotates pressure regulation, adjusting screw 23 is followed by 21 relative adjustment of adjusting pressuring handle and fixes
Seat 22 does axial rotation so as to regulation safety valve setting value, and the adjusting screw 23 when upper and lower promotion or rotation adjusting pressuring handle 21
Relative adjustment fixed seat 22 will not be all shifted up and down to ensure that it is constant that pressure set points are stablized.
Please refer to attached drawing 1, in the utility model embodiment, pressure regulating mechanism 2 further includes locking nut 27, adjusting pressuring handle
Screw thread is equipped on 21 lower ends and adjusting fixed seat 22, locking nut 27 can screw thread with adjusting pressuring handle 21 and adjusting fixed seat 22
Connection, when so that elastic card angle 211 is stuck on the second card slot 222 by adjusting pressuring handle 21 instantly, adjusting pressuring handle 21 passes through locking nut
27 prevent 21 relative adjustment fixed seat 22 of adjusting pressuring handle from shifting to make pressure regulation hand up and down with the locking connection of fixed seat 22 is adjusted
Handle 21 is engaged with matched circular orientation tooth holding in fixed seat 22 is adjusted to ensure that it is constant that pressure set points are stablized.
Please refer to attached drawing 1, attached drawing 6, in the utility model embodiment, the pressure of the fluid media (medium) in flow channel 11 is direct
It acts on 13 bottom large end face of piston component, piston component 13 is connect with spring 25 using spherical surface, produced by the pressure of medium
To spring 25 push force value be amplified, be easy by change spring 25 elastic force by change safety valve pressure setting value.
Attached drawing 1 is please referred to attached drawing 6, when initial, passes through locking nut 27 between adjusting pressuring handle 21 and adjusting fixed seat 22
Locking thread connects, and the elastic card angle 211 on adjusting pressuring handle 21 is stuck on the second card slot 222 for adjusting fixed seat 22, pressure regulation hand
Handle 21 is engaged with matched circular orientation tooth holding in fixed seat 22 is adjusted, and adjusting screw 23 is by plugging together and adjusting pressuring handle 21
Flexible connection, when needing the pressure set points of regulation safety valve to press, rotating locking nut 27 first makes adjusting pressuring handle 21 be detached from
Locking connection between adjusting fixed seat 22, then adjusting pressuring handle 21 is pushed up, make the elastic card angle on adjusting pressuring handle 21
211 are stuck on the first card slot 221, and due to 23 upper limit raised role of adjusting screw, adjusting screw 23 remains stationary as at this time, but
It is that the upper end of adjusting screw 23 still plugs together and is connected on adjusting pressuring handle 21, and adjusting pressuring handle 21 matches in fixed seat 22 with adjusting
The circular orientation tooth of conjunction be disengaged from make adjusting pressuring handle 21 can relative adjustment fixed seat 22 rotate, rotate adjusting pressuring handle 21, make tune
Pressure handle 21 drives adjusting screw 23 to rotate to make adjusting nut 24 rectangular in adjusting fixed seat 22 along adjusting screw together
23 move up and down and change the compression degree of spring 25 to change safety valve pressure setting value, after adjusting, push and adjust
Handle 21 makes elastic card angle 211 be stuck on the second card slot 222, adjusting pressuring handle 21 and matched annular in adjusting fixed seat 22
Positioning tooth keeps engagement, 21 relative adjustment fixed seat 22 of adjusting pressuring handle that will be no longer able to turn to keep pressure set points to stablize not
Become, then rotation is threaded in the locking nut 27 adjusted in fixed seat 22 and is connect with 21 lower thread of adjusting pressuring handle so that adjusting
Locking connection is established between section handle 21 and adjusting fixed seat 22 to prevent 21 relative adjustment fixed seat 22 of adjusting pressuring handle from
It is lower promotion and keep safety valve pressure setting value stabilization it is constant.
The above, embodiment are only to illustrate the technical solution of the utility model, rather than its limitations；Although with reference to before
Embodiment is stated the utility model is described in detail, it will be understood by those of ordinary skill in the art that：It still can be with
It modifies to the technical solution recorded in previous embodiment, or equivalent replacement is carried out to some technical characteristics therein；And
These modifications or substitutions do not make corresponding technical solution be detached from the spirit and scope of the utility model embodiment technical solution, because
This every other embodiment obtained by those of ordinary skill in the art without making creative efforts belongs to this
The protection domain of utility model.
Claims (5)
1. a kind of low-temperature safety valve, including valve body (1), the valve body (1), which is equipped with, runs through what valve body flowed into for fluid media (medium)
Flow channel (11) and the leakage path (12) being discharged for fluid media (medium), the flow channel (11) and leakage path (12) are by setting
The seal face of piston component (13) in the valve body (1) is isolated, it is characterised in that：
Further include the pressure regulating mechanism (2) for regulation safety valve setting value, the pressure regulating mechanism (2) includes pressure regulation hand
Handle (21), the adjusting fixed seat (22) of inner hollow, adjusting screw (23), adjusting nut (24), spring (25), spring base
(26)；
The adjusting fixed seat (22) is fixedly connected on the valve body (1), and the adjusting pressuring handle (21) is movably arranged on described
It adjusts in fixed seat (22), the adjusting nut (24) is threaded in the adjusting screw (23) and is set on together described
It adjusts in fixed seat (22), and the upper end of adjusting screw (23) is pierced by the adjusting fixed seat (22) and is connected to the pressure regulation hand
On handle (21) adjusting nut is adjusted to drive adjusting screw (23) to rotate when rotating the adjusting pressuring handle (21) in turn
(24) position；
The spring (25) is set in the adjusting screw (23), and spring (25) one end is against on the adjusting nut (24),
The other end is against on the spring base (26), and spring base (26) bottom surface uses spherical surface with the piston component (13) upper surface
Connection makes to change when rotating adjusting pressuring handle (21) drive adjusting screw (23) rotation to eliminate spring supporting face unbalance stress
More precisely stablize when becoming spring (25) elastic force adjustment safety valve pressure setting value, when the pressure of the fluid media (medium) of input is big
The piston component (13) can be such that the flow channel (11) and leakage path (12) is connected by open-top when safety valve setting value
Safety valve is set to open pressure release, and fluid media (medium) is made to let out when safety valve unlatching by piston component (13) partition in the valve body (1)
Fluid media (medium) may not flow into the pressure regulating mechanism (2) when pressure.
2. low-temperature safety valve according to claim 1, it is characterised in that：The adjusting pressuring handle (21) passes through circular orientation tooth
Positioning is engaged with the adjusting fixed seat (22) to ensure that it is constant that adjusting pressure set points are stablized.
3. low-temperature safety valve according to claim 2, it is characterised in that：The adjusting pressuring handle (21) is equipped with several bullets
Property Ka Jiao (211), the adjusting fixed seat (22) be equipped with and matched first card slot (221) of the elastic card angle (211)
With the second card slot (222), the adjusting pressuring handle (21) is fastened on the adjusting fixed seat (22) by elastic card angle (211) activity
On, when the elastic card angle (211) of the adjusting pressuring handle (21) is stuck on second card slot (222), the adjusting pressuring handle
(21) being engaged with matched circular orientation tooth holding on the adjusting fixed seat (22) makes the adjusting pressuring handle (21) with respect to institute
State adjust fixed seat (22) rotatably with ensure to adjust pressure set points do not stablize it is constant, when up pushing away the adjusting pressuring handle (21)
When elastic card angle (211) being made to be stuck on first card slot (221), the adjusting pressuring handle (21) and the adjusting fixed seat (22)
Upper matched circular orientation tooth be disengaged from make the adjusting pressuring handle (21) can relative to the adjustings fixed seat (22) rotation with
It drives adjusting screw (23) to rotate and then adjusts the position of the adjusting nut (24).
4. low-temperature safety valve according to claim 3, it is characterised in that：The adjusting screw (23) is equipped with limit convex
It rises, limit protrusion coordinates the spring (25) that adjusting screw (23) is stuck in adjusting fixed seat (22), adjusting screw (23)
Upper end is pierced by the adjusting fixed seat (22) and is flexibly connected with the adjusting pressuring handle (21) by plugging together, and ought above push away the tune
When pressure handle (21) makes elastic card angle (211) be stuck on first card slot (221) and rotates pressure regulation, the adjusting screw (23)
It is followed by adjusting pressuring handle (21) relative adjustment fixed seat (22) and does axial rotation so as to regulation safety valve setting value, and the tune
Section screw (23) relative adjustment fixed seat (22) will not be shifted up and down to ensure that it is constant that pressure set points are stablized.
5. low-temperature safety valve according to any one of claims 1 to 4, it is characterised in that：The pressure regulating mechanism (2) is also wrapped
Locking nut (27) is included, the locking nut (27) is threadedly coupled with the adjusting pressuring handle (21) and adjusting fixed seat (22),
The adjusting pressuring handle (21) makes the adjusting pressuring handle by the locking connection of locking nut (27) and the adjusting fixed seat (22)
(21) relative adjustment fixed seat (22) cannot shift to make the adjusting pressuring handle (21) and the adjusting fixed seat (22) up and down
Upper matched circular orientation tooth keeps engagement to ensure that it is constant that pressure set points are stablized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721924225.1U CN207661178U (en) | 2017-12-29 | 2017-12-29 | A kind of low-temperature safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721924225.1U CN207661178U (en) | 2017-12-29 | 2017-12-29 | A kind of low-temperature safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207661178U true CN207661178U (en) | 2018-07-27 |
Family
ID=62944644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721924225.1U Active CN207661178U (en) | 2017-12-29 | 2017-12-29 | A kind of low-temperature safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207661178U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110985576A (en) * | 2019-12-24 | 2020-04-10 | 上海交通大学 | Rigidity force control device based on non-rigid connection |
| CN111963737A (en) * | 2020-08-04 | 2020-11-20 | 上海国之鼎铁路机电有限公司 | Low-temperature-resistant main air cylinder high-pressure safety valve for rail transit |
-
2017
- 2017-12-29 CN CN201721924225.1U patent/CN207661178U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110985576A (en) * | 2019-12-24 | 2020-04-10 | 上海交通大学 | Rigidity force control device based on non-rigid connection |
| CN110985576B (en) * | 2019-12-24 | 2021-05-28 | 上海交通大学 | Rigidity force control device based on non-rigid connection |
| CN111963737A (en) * | 2020-08-04 | 2020-11-20 | 上海国之鼎铁路机电有限公司 | Low-temperature-resistant main air cylinder high-pressure safety valve for rail transit |
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