CN2913778Y - Escape valve fast switch over device for double-close type valve satisfying backup discharging ability - Google Patents

Escape valve fast switch over device for double-close type valve satisfying backup discharging ability Download PDF

Info

Publication number
CN2913778Y
CN2913778Y CN 200620004067 CN200620004067U CN2913778Y CN 2913778 Y CN2913778 Y CN 2913778Y CN 200620004067 CN200620004067 CN 200620004067 CN 200620004067 U CN200620004067 U CN 200620004067U CN 2913778 Y CN2913778 Y CN 2913778Y
Authority
CN
China
Prior art keywords
valve
flap
runner cavity
safety
cavity
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.)
Expired - Lifetime
Application number
CN 200620004067
Other languages
Chinese (zh)
Inventor
王德海
苏斌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Aerospace Petrochemical Technology and Equipment Engineering Corp Ltd
Original Assignee
Beijing Aerospace Petrochemical Technology and Equipment Engineering Corp Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Beijing Aerospace Petrochemical Technology and Equipment Engineering Corp Ltd filed Critical Beijing Aerospace Petrochemical Technology and Equipment Engineering Corp Ltd
Priority to CN 200620004067 priority Critical patent/CN2913778Y/en
Application granted granted Critical
Publication of CN2913778Y publication Critical patent/CN2913778Y/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Abstract

A rapid switching device for double shut-off safety valve capable of satisfying backup bleeding ability comprises a double shut-off valve (1), two safety valves (2) arranged on the upper part of the double shut-off valve (1), two bleeder valves (4) connected with the outlet (21) of the safety valves (2) and chamber outlets (41, 42) via a pipe (43), and a balancing valve (3) connected with the pipe (43) via a pipe (31). The double shut-off valve (1) has a double right-angle three-way flow passage structure, and is operated by rotating a hand wheel (19) to draw a valve rod (8) to move left and right. When the valve rod (8) drives the valve core (7) to the right side, the left flow passage of the double shut-off valve (1) is opened and the left safety valve works, otherwise, the right safety valve works. The utility model has the advantages of compact structure, convenient operation, low cost, and easy repairing.

Description

Satisfy the dual stop valve type safety valve apparatus for fast switching of backup relieving capacity
Technical field
The utility model relates to a kind of online COMM communication of safety valve, and finger can satisfy the dual stop valve type safety valve apparatus for fast switching of backup relieving capacity especially.
Background technique
The current safety valve is widely used in each departments of national economy such as oil, chemical industry, power station, metallurgy, nuclear power, national defence, but have at working medium under the operating mode of corrosion and filth, or safety valve must often check that the normal safe operation that how to guarantee production system is a very important task under the situation with verification.For the continuous process units of operation, operation period that will extension fixture satisfies again simultaneously safety valve is carried out online maintenance of not stopping.
For satisfying the online spare part requirement of safety valve, each enterprise often adopts installs two stop valves in system, a safety valve is installed respectively on each stop valve more at present; Perhaps safety valve is connected with stop valve by right-angle elbow pipe, tee union or the like parts.When adopting these methods, be separately installed with stop valve below two safety valves, not only the pipeline of stop valve of Shi Yonging and installation is more, expense is higher, it is bigger to take up room, and when operation for the normal use that guarantees the safety on line valve to avoid misoperation, also need complicated interlocking program between two stop valves.
Therefore, design special use, the online COMM communication of reliable, Eco-power safety valve is the task of top priority of design office.
Summary of the invention
According to background technique; it is the dual stop valve of birectangular threeway stream that the purpose of this utility model is to provide a kind of stop valve; two identical safety valves are installed in its top; back and forth switch online overpressure protection that carries out of safety valve of assurance by the both sides of dual stop valve; and another is standby for maintenance, satisfies two cut-off type safety valve apparatus for fast switching of online respective backup relieving capacity requirement.
To achieve these goals, the utility model is achieved through the following technical solutions:
A kind of dual stop valve type safety valve apparatus for fast switching of satisfied backup relieving capacity, mainly by dual stop valve (1), safety valve (2), equilibrium valve (3) and release valve (4) and form, it is characterized in that: dual stop valve (1) is a birectangular three-way flow line structure, the A runner cavity (51) on dual stop valve (1) top is connected with two safety valves (2) by adpting flange (53) with B runner cavity (52), two release valve (4) and are connected with cavity drain port (42) with cavity drain port (41) with the outlet (21) of safety valve (2) by pipeline (43) respectively, equilibrium valve (3) is connected with pipeline (43) by pipeline (31), should link up the A runner cavity (51) and the B runner cavity (52) of dual stop valve (1); Dual stop valve (1) is to be spirally connected by valve body (5) and A runner cavity (51) and B runner cavity (52), be gripped with the valve seat (6) and the seal ring (61) of the conical surface therebetween, support (10) is connected with A runner cavity (51), one end of valve rod (8) is connected with flap (7) with flap gland (12) by flap pressure ring (11), contact or spur flap (7) and valve seat (6) that A runner cavity (51) is located and pass through valve rod (8) end sphere (81) and flap pressure ring (11) sphere when the conical surface contacts when valve rod (8) promotes flap (7) and valve seat (6) conical surface that B runner cavity (52) is located towards valve rod (8), can realize the small angle trace swing of flap (7), in support (10) and A runner cavity (51) joint, be set with gland (15) on the valve rod (8), filler gland (14) and filler (13), guiding plug screw (17) also is installed, the other end suit Stem Mut (9) of valve rod (8), its Stem Mut (9) is gone up bearing set (16), be fixed in support (10) the end chamber (1 01) by non-return nut (18), handwheel (19) makes handwheel (19) and Stem Mut (9) form the integral body of a rotation by set screw nut (191), handwheel (19) rotating band ovable valve stem nut (9) rotation makes valve rod (8) move left and right.
Owing to adopted technique scheme, the utlity model has following advantage and effect:
1, the dual stop valve that switched by both sides of the utility model has replaced the effect of right-angle elbow pipe, tee union or the like parts and two stop valves in the online spare part scheme of other safety valves.Because the switching of dual stop valve can accomplish all the time that of two safety valves is equipped with a usefulness, has simplified complicated interlocking program.The direct attachment security valve of dual stop valve makes whole apparatus structure compactness, easy to operate.
2, the utlity model has that flow resistance is little, easy to operate, little, characteristics such as cost is lower take up room.Its compact structure, leakage point is few, and the pipe fitting complexity is little.Dual stop valve type safety valve apparatus for fast switching is a kind of device of on-line conversion efficiently, satisfies the required backup relieving capacity of system, and it can carry out continuous overpressure protection to production system, and is cheap, and working service is repaired simple and easy.
Description of drawings
Fig. 1 is the utility model general structure schematic representation
Fig. 2 is the utility model dual stop valve structure collectivity cross-sectional schematic
Embodiment
Illustrate by Fig. 1 and Fig. 2, a kind of dual stop valve type safety valve apparatus for fast switching of satisfied backup relieving capacity, mainly by dual stop valve (1), safety valve (2), equilibrium valve (3) and release valve (4) and form, wherein: dual stop valve (1) is a birectangular three-way flow line structure, the A runner cavity (51) on dual stop valve (1) top is connected with two safety valves (2) by adpting flange (53) with B runner cavity (52), two release valve (4) and are connected with cavity drain port (42) with cavity drain port (41) with the outlet (21) of safety valve (2) by pipeline (43) respectively, equilibrium valve (3) is connected with pipeline (43) by pipeline (31), should link up the A runner cavity (51) and the B runner cavity (52) of dual stop valve (1); Dual stop valve (1) is to be spirally connected by valve body (5) and A runner cavity (51) and B runner cavity (52), be gripped with the valve seat (6) and the seal ring (61) of the conical surface therebetween, support (10) is connected with A runner cavity (51), one end of valve rod (8) is connected with flap (7) with flap gland (12) by flap pressure ring (11), contact or spur flap (7) and valve seat (6) that A runner cavity (51) is located and pass through valve rod (8) end sphere (81) and flap pressure ring (11) sphere when the conical surface contacts when valve rod (8) promotes flap (7) and valve seat (6) conical surface that B runner cavity (52) is located towards valve rod (8), can realize the small angle trace swing of flap (7), in support (10) and A runner cavity (51) joint, be set with gland (15) on the valve rod (8), filler gland (14) and filler (13), guiding plug screw (17) also is installed, the other end suit Stem Mut (9) of valve rod (8), its Stem Mut (9) is gone up bearing set (16), be fixed in support (10) the end chamber (101) by non-return nut (18), handwheel (19) makes handwheel (19) and Stem Mut (9) form the integral body of a rotation by set screw nut (191), handwheel (19) rotating band ovable valve stem nut (9) rotation makes valve rod (8) move left and right.
Know that again full hole flow channel type technological scheme has been adopted in the design of dual stop valve 1, has guaranteed the inlet area of minimum flow area greater than safety valve 2.
Dual stop valve 1 is in when design, adopted two structural types that safety valve 2 is kept apart simultaneously whenever that prevent in handoff procedure.
Still can keep required sealing after more than 1 action of dual stop valve.With respect to common stop valve, the characteristics of dual stop valve 1 are the sealing pairs that all there is high pressure on two sides, the left and right sides, in order to satisfy this requirement, flap 7 links to each other with valve rod 8 by flap pressure ring 11, flap gland 12, flap 7 has slight oscillating quantity, no matter be that valve rod 8 promotes flap 7 to one side sealings, still spur flap 7 to the opposite side sealing, by the sphere of valve rod 8 towards the bulb of flap 7 and flap pressure ring 11 towards valve rod 8, can realize the little pendulum of small angle of flap 7 and connect reliable, improved the centering of flap 7, sealing effect is good.Medium temperature wider range that this COMM communication is suitable for.Because valve rod 8 is a lifting bar in the course of the work, that bears draws thrust bigger, and easily normal for guaranteeing handwheel 19 and Stem Mut 9 rotations, we have all installed thrust-bearing 16 in the left and right sides of Stem Mut 9, satisfactory for result, handwheel 19 rotations are light, quick.The anti-rotation of valve rod 8 has adopted at support 10 rear portions installation guiding plug screw 17.
Know again, drive Stem Mut 9 rotations by rotation hand wheel 19, thus pulling valve rod 8 move left and right, and when valve rod 8 drive flaps 7 were pushed the right side to, the left side runner of dual stop valve 1 opened wide, and makes left side safety valve 2 in running order; When valve rod 8 drive flaps 7 pulled to the left side, the right side runner of dual stop valve opened wide, and makes right side safety valve 2 in running order.
Two outlets of dual stop valve 1 are denoted as A and B, be carved with red indication cutting on the valve rod 8, also indicate on support 10 and the handwheel 19 corresponding A, B position are arranged, make A pass or the B pass position of valve rod cutting 81 by rotation hand wheel 19, shown that promptly A or B are which side is in closed condition corresponding to support.
When needing the safety valve 2 of dismounting one side, that can open this side releases valve 4, and in order to the safe and effective pressure medium that releases before the safety valve 2 to be removed, guaranteeing does not have the safety operation of pressure.
Be provided with equilibrium valve 3 in the device, equilibrium valve 3 is in closed condition during proper functioning, it can link up valve body about 5 two chambeies of dual stop valve 1, when switching, can make the isostasy of dual stop valve 1 flap 7 both sides, eliminate the pressure difference of flap 7 both sides, reduce moment of rotation during switching, flap 7 can move more easily.
Switch motion carries out as follows:
(1) checks two-way bleeder valve 4;
(2) open equilibrium valve 3;
(3) rotate handwheel 19, finish switch operating;
(4) close equilibrium valve 3;
(5) open the bleeder valve 4 that desire is removed a side, make the mediator depletion before this side safety valve 2;
(6) pull down safety valve 2.

Claims (1)

1, a kind of dual stop valve type safety valve apparatus for fast switching of satisfied backup relieving capacity, mainly by dual stop valve (1), safety valve (2), equilibrium valve (3) and release valve (4) and form, it is characterized in that: dual stop valve (1) is a birectangular three-way flow line structure, the A runner cavity (51) on dual stop valve (1) top is connected with two safety valves (2) by adpting flange (53) with B runner cavity (52), two release valve (4) and are connected with cavity drain port (42) with cavity drain port (41) with the outlet (21) of safety valve (2) by pipeline (43) respectively, equilibrium valve (3) is connected with pipeline (43) by pipeline (31), links up the A runner cavity (51) and the B runner cavity (52) of dual stop valve (1); Dual stop valve (1) is to be spirally connected by valve body (5) and A runner cavity (51) and B runner cavity (52), be gripped with the valve seat (6) and the seal ring (61) of the conical surface therebetween, support (10) is connected with A runner cavity (51), one end of valve rod (8) is connected with flap (7) with flap gland (12) by flap pressure ring (11), contact or spur flap (7) and valve seat (6) that A runner cavity (51) is located and pass through valve rod (8) end sphere (81) and flap pressure ring (11) sphere when the conical surface contacts when valve rod (8) promotes flap (7) and valve seat (6) conical surface that B runner cavity (52) is located towards valve rod (8), can realize the small angle trace swing of flap (7), in support (10) and A runner cavity (51) joint, be set with gland (15) on the valve rod (8), filler gland (14) and filler (13), guiding plug screw (17) also is installed, the other end suit Stem Mut (9) of valve rod (8), its Stem Mut (9) is gone up bearing set (16), be fixed in support (10) the end chamber (101) by non-return nut (18), handwheel (19) makes handwheel (19) and Stem Mut (9) form the integral body of a rotation by set screw nut (191), handwheel (19) rotating band ovable valve stem nut (9) rotation makes valve rod (8) move left and right.
CN 200620004067 2006-02-20 2006-02-20 Escape valve fast switch over device for double-close type valve satisfying backup discharging ability Expired - Lifetime CN2913778Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200620004067 CN2913778Y (en) 2006-02-20 2006-02-20 Escape valve fast switch over device for double-close type valve satisfying backup discharging ability

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200620004067 CN2913778Y (en) 2006-02-20 2006-02-20 Escape valve fast switch over device for double-close type valve satisfying backup discharging ability

Publications (1)

Publication Number Publication Date
CN2913778Y true CN2913778Y (en) 2007-06-20

Family

ID=38168377

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 200620004067 Expired - Lifetime CN2913778Y (en) 2006-02-20 2006-02-20 Escape valve fast switch over device for double-close type valve satisfying backup discharging ability

Country Status (1)

Country Link
CN (1) CN2913778Y (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102151666A (en) * 2010-12-02 2011-08-17 河北工业大学 Automatic flushing system of safety valve of fluid transportation pipe
CN103591334A (en) * 2013-11-22 2014-02-19 吴江市东吴机械有限责任公司 Inlet and outlet double linkage changeover valve
CN105318043A (en) * 2015-11-25 2016-02-10 江苏华太电力仪表有限公司 Double-stop valve
CN105605279A (en) * 2015-11-25 2016-05-25 江苏华太电力仪表有限公司 Double-stop-valve efficient valve body
CN110953370A (en) * 2019-12-16 2020-04-03 南京公汇科技有限公司 Vacuum controller for vacuum processor

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102151666A (en) * 2010-12-02 2011-08-17 河北工业大学 Automatic flushing system of safety valve of fluid transportation pipe
CN102151666B (en) * 2010-12-02 2012-09-26 河北工业大学 Automatic flushing system of safety valve of fluid transportation pipe
CN103591334A (en) * 2013-11-22 2014-02-19 吴江市东吴机械有限责任公司 Inlet and outlet double linkage changeover valve
CN105318043A (en) * 2015-11-25 2016-02-10 江苏华太电力仪表有限公司 Double-stop valve
CN105605279A (en) * 2015-11-25 2016-05-25 江苏华太电力仪表有限公司 Double-stop-valve efficient valve body
CN110953370A (en) * 2019-12-16 2020-04-03 南京公汇科技有限公司 Vacuum controller for vacuum processor

Similar Documents

Publication Publication Date Title
CN2913778Y (en) Escape valve fast switch over device for double-close type valve satisfying backup discharging ability
CN102661407B (en) Low-resistance swing check valve for gas pipeline
CN108662207B (en) Opening and closing method of pipeline valve assembly
CN201820704U (en) Connecting device for checking gas density relay
CN104896129A (en) Parallel type double-gate gate valve
CN111810664B (en) Vacuum die-casting stop valve of hydraulic pump
CN204985792U (en) Parallel gate valve
CN2913779Y (en) Escape valve fast switch over device for triple ball-type valve satisfying backup discharging ability
CN104089055A (en) Supercritical large-caliber two-direction buffer control type check valve
CN201606504U (en) Hard sealing angle valve
CN204942608U (en) Duplex handover security control valve unit
CN202597797U (en) Low-resistance swing type check valve of gas pipeline
CN105065701A (en) Hard sealing lifting type brake plug valve and control method thereof
CN201487239U (en) right-angle valve
CN100359230C (en) Composite dual-supporting double-speed multifunctional valve
CN202612680U (en) High-pressure unloading valve
CN210440623U (en) Multifunctional heavy hammer self-operated double-sealing swing check valve
CN204344939U (en) A kind of high-pressure stop valve
CN205064949U (en) Y type leads directly to rising -down check valve
CN208565604U (en) A kind of Novel hydraulic blank-plate valve
CN108686588B (en) Catalyst injection device capable of being cleaned on line
CN201262241Y (en) Wedge-type sluice valve for preventing out of control
CN203548927U (en) Tandem blow-off valve
CN205918974U (en) Signal feedback direct -acting electromagnetic valve
CN204664604U (en) The linkage structure of stop valve inside

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CX01 Expiry of patent term

Granted publication date: 20070620

EXPY Termination of patent right or utility model