CN202165659U

CN202165659U - Bidirectional safety valve

Info

Publication number: CN202165659U
Application number: CN201120036009XU
Authority: CN
Inventors: 卢建强; 李永利; 魏存庆; 罗向阳; 牟方斌; 李艳斌; 谢瑞花; 李艳慧
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-02-11
Filing date: 2011-02-11
Publication date: 2012-03-14
Anticipated expiration: 2021-02-11

Abstract

The utility model discloses a bidirectional safety valve which is a valve automatic control device and overcomes the disadvantages of the prior art. The bidirectional safety valve consists of a valve core, a righting inserting rod groove, first air inlet holes, a circlip groove, a movable valve seat, a sealing cavity chamber, a free falling type small enamel ball, a righting spring, a valve ball positioning seat, a second air inlet hole, a sealing groove and a cylindrical hole, wherein the righting inserting rod groove is arranged at the upper end of the valve core, the valve core of the safety valve and the movable valve seat are fixed together by a circlip in the circlip groove, the valve core and the sealing groove are buckled on a safety valve sealing ring, the sealing cavity chamber is coaxial with the movable valve seat and is arranged at the bottom of the movable valve seat, the free falling type enamel ball is arranged in the sealing cavity chamber, the righting spring is arranged under the free falling type enamel ball and in the valve ball positioning seat, the second air inlet hole is arranged at the lower part of the valve ball positioning seat, the cylindrical hole is arranged at the top of the sealing cavity chamber, four first air inlet holes are uniformly distributed at the upper part of the cylindrical hole, are inclined to the medial axis of the cylindrical hole by an angle of 30 DEG and are communicated with the four first air inlet holes arranged at the middle part of the valve core.

Description

Bidirectional relief valve

One, technical field: the utility model relates to a kind of valve class automatic controller, especially bidirectional relief valve.

Two, background technique: existing petroleum metering station or the open-air water jacket furnace safety valve that uses; Can only play the superpressure effect, its working principle is: when the water jacket furnace internal pressure surpassed the authorized pressure value, spool was backed down; Emit unnecessary pressure; When pressure was put into specified value, spool was closed automatically, played unidirectional superpressure safety protection effect.Because very easily produce negative pressure due to the water jacket furnace characteristic, present safety valve is difficult to protect the proper functioning of positive water jacket furnace, thereby water jacket furnace is caused certain infringement, has reduced the working life of water jacket furnace.

Three, summary of the invention: the purpose of the utility model provides a kind of bidirectional relief valve that petroleum metering station water batch heater solves negative pressure, superpressure that is used for; It has overcome the shortcoming that original technology exists; The purpose of the utility model is to realize like this; It by spool, set upright inserted link groove, first inlet hole, jump ring groove, movable valve seat, sealed chamber, free fall type Tang porcelain bead, set upright spring, valve ball positioning seat, second inlet hole, seal groove and cylindrical hole and form; Set upright the inserted link groove in the upper end of spool, the spool of safety valve and movable valve seat are fixed together through the clasp in the jump ring groove; Spool and seal groove are buckled on the safety valve seal ring.

Establish the sealed chamber coaxial with it in movable valve seat bottom, free fall type Tang porcelain bead is arranged in sealed chamber, set upright spring below the free fall type Tang porcelain bead, and be positioned at the valve ball positioning seat, there is second inlet hole in the bottom of valve ball positioning seat.

Sealed chamber establishes cylindrical hole in the top, establishes on cylindrical hole top with axis tilt wherein and is uniformly distributed with four first inlet holes for 30 °, and communicate with four first inlet holes that establish at the spool middle part.

Working principle; When producing negative pressure in the water jacket furnace, when reaching atmospheric pressure greater than the water jacket furnace internal pressure, free fall type Tang porcelain bead is because the own wt whereabouts; Air gets in the stove through four inlet holes that inlet hole and valve ball positioning seat bottom are uniformly distributed with, and makes internal and external pressure balance; When furnace pressure was higher than ambient pressure, free fall type Tang porcelain bead was being set upright under spring and the pressure effect, leaned on the movable valve seat of sphere self seal valve core, and when oneself surpassed specified value to internal pressure, spool was backed down pressure release; Reach not blowing out, we does not drive the burning stove, does not manually open the valve pressure release, keep the valve automatic balancing arrangement of former safety valve overpressure protection function, it has solved the problem that water jacket furnace produces negative pressure.

The meaning of the utility model is: can make water jacket furnace when superpressure, play the safety relief effect; Can make water jacket furnace when negative pressure, play the effect with the ambient pressure balance again; Solve the present existing deficiency of water jacket furnace safety valve in usefulness, promptly existing technology can not solve the water jacket furnace negative pressure problem.For eliminating the negative pressure that water jacket furnace self produces, guarantee its proper functioning.

Four, description of drawings: Fig. 1 is the structural representation of bidirectional relief valve, among the figure 1, spool 2, set upright inserted link groove 3, first inlet hole 4, jump ring groove 5, movable valve seat 6, sealed chamber 7, free fall type Tang porcelain bead 8, set upright spring 9, valve ball positioning seat 10, second inlet hole 11, seal groove 12, cylindrical hole

Five, embodiment: embodiment 1, set upright inserted link groove 2 in the upper end of spool 1, the spool 1 and the movable valve seat 5 of safety valve are fixed together through the clasp in the jump ring groove 4; Spool 1 is buckled on the safety valve seal ring with seal groove 11.

Embodiment 2, establish the sealed chamber coaxial 6 with it in movable valve seat 5 bottoms; Free fall type Tang porcelain bead 7 is arranged in the sealed chamber 6; Set upright spring 8 below the free fall type Tang porcelain bead 7, and be positioned at valve ball positioning seat 9, there is second inlet hole 10 in the bottom of valve ball positioning seat 9.

Cylindrical hole 12 is established at embodiment 3, sealed chamber 6 tops, establishes on cylindrical hole 12 tops with axis tilt wherein and is uniformly distributed with four first inlet holes 3 for 30 °, and communicate with four inlet holes 3 that establish at spool 1 middle part.

Claims

1. bidirectional relief valve; It by spool (1), set upright inserted link groove (2), first inlet hole (3), jump ring groove (4), movable valve seat (5), sealed chamber (6), free fall type Tang porcelain bead (7), set upright spring (8), valve ball positioning seat (9), second inlet hole (10), seal groove (11) and cylindrical hole (12) and form; It is characterized in that: set upright inserted link groove (2) in the upper end of spool (1), spool of safety valve (1) and movable valve seat (5) are fixed together through the clasp in the jump ring groove (4); Spool (1) is buckled on the safety valve seal ring with seal groove (11); Establish the sealed chamber coaxial (6) in movable valve seat (5) bottom with it; Free fall type Tang porcelain bead (7) is arranged in sealed chamber (6); Set upright spring (8) below the free fall type Tang porcelain bead (7), and be positioned at valve ball positioning seat (9), there is second inlet hole (10) in the bottom of valve ball positioning seat (9); Sealed chamber (6) establishes cylindrical hole (12) in the top, establishes on cylindrical hole (12) top with axis tilt wherein and is uniformly distributed with four first inlet holes (3) for 30 °, and communicate with four first inlet holes (3) that establish at spool (1) middle part.