CN204647452U - A kind of nuclear power pressure adjustment type safety check - Google Patents

A kind of nuclear power pressure adjustment type safety check Download PDF

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Publication number
CN204647452U
CN204647452U CN201520341597.6U CN201520341597U CN204647452U CN 204647452 U CN204647452 U CN 204647452U CN 201520341597 U CN201520341597 U CN 201520341597U CN 204647452 U CN204647452 U CN 204647452U
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China
Prior art keywords
valve
safety check
nuclear power
adjustment type
pressure adjustment
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Active
Application number
CN201520341597.6U
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Chinese (zh)
Inventor
华鑫美
方晨涛
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HANGZHOU LIANGGONG VALVES CO Ltd
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HANGZHOU LIANGGONG VALVES CO Ltd
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Priority to CN201520341597.6U priority Critical patent/CN204647452U/en
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Abstract

A kind of nuclear power pressure adjustment type safety check, belongs to valve technology field.It comprises valve body, valve seat, spool, Regulation spring, guide sleeve and valve gap, and described valve gap is threaded valve rod, and described stem bottom is connected with guide sleeve, and described valve stem top stretches out outside valve gap.Above-mentioned a kind of nuclear power pressure adjustment type safety check, structure is simple, reasonable in design, valve rod adopts adjustable type, and stretches out outside valve gap, arranges spanner auxiliary section at valve stem top, directly regulate at valve stem top with spanner when not stopping work, namely be adjustable to the pressure needed for operating mode, thus substantially increase manufacturing efficiency, fill up the nonadjustable blank of domestic normal pressures safety check pressure.

Description

A kind of nuclear power pressure adjustment type safety check
Technical field
The utility model belongs to valve technology field, is specifically related to a kind of nuclear power pressure adjustment type safety check.
Background technique
Nuclear power pressure adjustment type safety check, without the need to external energy (without the need to additional power source or source of the gas), utilizing by tune medium self-energy is power source, medium advances into valve body by the valve body direction of arrow by valve, when being more than or equal to the pressure set-point of Regulation spring by the impulse force of itself, after opening spool flow valves, thus ensure the size of upstream pressure.Have and be active in one's movements, good airproof performance, medium does not reflux, and pressure decides advantages such as a little stablizing, is widely used in the automatic control to gas, liquid and vapor medium steady pressure in various industry equipment.
In recent years, domestic valve industry develop rapidly, the product structure type of each valve producer emerges in an endless stream.But domestic existing pressure check valve, decides a little unadjustable in the situation downforce not dismantling valve and change Regulation spring, the pressure check valve of this structure cannot regulate when operating mode is run operating mode change needed for pressure, affect the normal operation of industrial processes.
Model utility content
For prior art Problems existing, the purpose of this utility model is to design the technological scheme providing a kind of nuclear power pressure adjustment type safety check.
Described a kind of nuclear power pressure adjustment type safety check, comprise valve body, valve seat, spool, Regulation spring, guide sleeve and valve gap, it is characterized in that described valve gap is threaded valve rod, described stem bottom is connected with guide sleeve, and described valve stem top stretches out outside valve gap.
Described a kind of nuclear power pressure adjustment type safety check, is characterized in that described valve stem top is provided with spanner auxiliary section.
Described a kind of nuclear power pressure adjustment type safety check, is characterized in that described valve rod is threaded with the attaching nut arranged in valve gap, and is fixed by the locking nut arranged.
Described a kind of nuclear power pressure adjustment type safety check, is characterized in that described guide sleeve top is fixedly installed bearing, and described stem bottom is inserted in bearing and is connected with bearing.
Above-mentioned a kind of nuclear power pressure adjustment type safety check, structure is simple, reasonable in design, valve rod adopts adjustable type, and stretches out outside valve gap, arranges spanner auxiliary section at valve stem top, directly regulate at valve stem top with spanner when not stopping work, namely be adjustable to the pressure needed for operating mode, thus substantially increase manufacturing efficiency, fill up the nonadjustable blank of domestic normal pressures safety check pressure.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of valve rod in the utility model.
In figure: 1-valve body, 2-valve seat, 3-spool, 4-Regulation spring, 5-guide sleeve, 6-valve gap, 7-O RunddichtringO, 8-bearing, 9-valve rod, 10-locking nut, 11-spanner auxiliary section; 12-attaching nut.
Embodiment
The utility model is further illustrated below in conjunction with Figure of description.
As shown in the figure, a kind of nuclear power pressure adjustment type safety check comprises valve body 1, valve seat 2, spool 3, Regulation spring 4, guide sleeve 5 and valve gap 6 and valve rod 9.The shaft of valve rod 9 is threaded with the attaching nut 12 arranged in valve gap 6, and valve rod 9 is fixed with valve gap 6 by the locking nut 10 arranged.For the ease of regulating, valve rod 9 top is stretched out outside valve gap 6, and valve rod 9 top is provided with spanner auxiliary section 11, for spanner.Insert to be arranged in the bearing 8 at guide sleeve 5 top bottom valve rod 9 and be connected with bearing 8.In order to reach sealing effect, between guide sleeve 5 and valve gap 6, be equipped with O RunddichtringO 7.
During use, with the height of spanner regulating valve stem 9, make Regulation spring 4 pressure setting pressure needed for safety check (when dispatching from the factory testing setup), pin with locking nut 10.Medium flows to valve body 1 by the direction of arrow, when the impulse force of medium itself is micro-be greater than the setting pressure of Regulation spring 4 time, spool 3 is opened, and after medium flow valves, thus ensures that upstream pressure is not higher than setting pressure, and then ensures the normal operation of equipment before valve.When the impulse force of medium itself is less than or equal to the setting pressure of Regulation spring 4, spool 3 is closed.
When the pressure needed for operating mode changes, using spanner rotating regulation valve bar 9 when not stopping work and do not dismantle safety check, compressing or loosening Regulation spring 4, pressure is made to be adjusted to pressure needed for operating mode, regulate complete, pin with locking nut 10, in order to avoid the pressure oscillation regulated.Substantially increase manufacturing efficiency from face, fill up the blank of the online pressure adjustable joint of domestic normal pressures safety check.
Shown in the above and figure is only preferred implementation of the present utility model.It should be pointed out that for the person of ordinary skill of the art, under the prerequisite not departing from the utility model principle, can also make some modification and improvement, these also should be considered as belonging to protection domain of the present utility model.

Claims (4)

1. a nuclear power pressure adjustment type safety check, comprise valve body (1), valve seat (2), spool (3), Regulation spring (4), guide sleeve (5) and valve gap (6), it is characterized in that described valve gap (6) is threaded valve rod (9), described valve rod (9) bottom is connected with guide sleeve (5), and described valve rod (9) top is stretched out at valve gap (6) outward.
2. a kind of nuclear power pressure adjustment type safety check as claimed in claim 1, is characterized in that described valve rod (9) top is provided with spanner auxiliary section (11).
3. a kind of nuclear power pressure adjustment type safety check as claimed in claim 1, is characterized in that described valve rod (9) is threaded with the attaching nut (12) arranged in valve gap (6), and is fixed by the locking nut (10) arranged.
4. a kind of nuclear power pressure adjustment type safety check as claimed in claim 1, is characterized in that described guide sleeve (5) top is fixedly installed bearing (8), and described valve rod (9) bottom is inserted in bearing (8) and is connected with bearing (8).
CN201520341597.6U 2015-05-25 2015-05-25 A kind of nuclear power pressure adjustment type safety check Active CN204647452U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520341597.6U CN204647452U (en) 2015-05-25 2015-05-25 A kind of nuclear power pressure adjustment type safety check

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520341597.6U CN204647452U (en) 2015-05-25 2015-05-25 A kind of nuclear power pressure adjustment type safety check

Publications (1)

Publication Number Publication Date
CN204647452U true CN204647452U (en) 2015-09-16

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Family Applications (1)

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CN201520341597.6U Active CN204647452U (en) 2015-05-25 2015-05-25 A kind of nuclear power pressure adjustment type safety check

Country Status (1)

Country Link
CN (1) CN204647452U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105202235A (en) * 2015-10-20 2015-12-30 无锡格莱德科技有限公司 Hydraulic pressure relief valve
CN110671525A (en) * 2019-09-25 2020-01-10 姚炳龙 Pressure reducing and stabilizing valve

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105202235A (en) * 2015-10-20 2015-12-30 无锡格莱德科技有限公司 Hydraulic pressure relief valve
CN110671525A (en) * 2019-09-25 2020-01-10 姚炳龙 Pressure reducing and stabilizing valve

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