CN205262669U - Pipeline pressure table - Google Patents

Abstract

The utility model provides a pipeline pressure table, including the table body and valve body, the table body is equipped with the back lid including watchcase, the watchcase back, forms the terminal installation cavity between back lid and the watchcase, the valve body includes valve body and case, it maybe case import and export to divide about the valve body, case inlet diameter slightly is less than the case diameter, case inlet diameter is greater than case outlet diameter, there is the equilibrium pressure hole on the case. Self -closing bursts, special explosion -proof valve of preceding first the instrument wind of breaking point, effectively prevents accident expansion. Because the case is equipped with the equilibrium pressure hole, automatic cutout when not needing human intervention to accomplish the trouble, automatic re -setting behind the fault recovery. Need not find generator tube to say to burst suddenly, it is closed to first valve before the cut -off point, this valve can be closed in the twinkling of an eye, avoids causing a large amount of media to leak the enlargement loss, prevented because of the system pressure reduces, caused system's interlocking to park.

Description

A kind of pipeline pressure table

Technical field

The utility model belongs to instrument field, especially relates to a kind of pipeline pressure table.

Background technology

In industrial production, usually run into due to the unexpected explosion of hydraulic piping outside other, disconnection, cause instrument windLine fracture causes a large amount of instrument wind outflows, and the action of instrument wind system pressure decreased interlocking, causes system to stopCar, causes very large economic loss to enterprise. At present also do not have special protective device to prevent because of pipelineSuddenly leak the in a large number generation of situation of explosion, disconnection and the instrument wind medium that causes.

Summary of the invention

In view of this, the utility model is intended to propose a kind of pipeline pressure table, with prevent because of pipeline quick-fried suddenlyLeak the in a large number generation of situation of the instrument wind medium that splits, disconnects and cause.

For achieving the above object, the technical solution of the utility model is achieved in that

A kind of pipeline pressure table, comprises table body and explosion-proof valve, and described table body comprises watchcase, and establish at the watchcase back sideHave bonnet, form binding post installation cavity between bonnet and watchcase, some binding posts are positioned at this installation cavity alsoInstalling hole matched in clearance with on watchcase, is provided with binding post fixed head between binding post and watchcase, this connectsOn terminal fixed head, have the spacing hole passing through for binding post, the hole of this spacing hole forms location along extending outHole, forms interference duct, alignment pin between its post jamb and the hole wall of locating hole after binding post insertion spacing holeWith this interference duct interference fit and clamp binding post; Described valve body comprises valve body and spool, described valve bodyLeft and right is respectively spool import and outlet, and described spool inlet diameter is slightly less than valve core diameter, described spoolInlet diameter is greater than spool outlet diameter; On described spool, there is equalizing pressure hole.

Further, described binding post comprises cylinder and insulation inserts, and cylinder comprises left-hand thread portion, centreSmooth department, the right-hand thread portion of right-hand member, this insulation inserts is interference fitted on the smooth department of cylinder, wiringThe left-hand thread portion of post is combined with wiring nut, left locking nut, the right-hand thread of binding post from left to right successivelyPortion is combined with right locking nut.

Further, described valve core diameter is slightly larger than spool inlet diameter, and spool inlet diameter is greater than spoolOutlet diameter, assembled heats valve body, and the spool of special anti-explosion valve is carried out to K cryogenic treatment, valveCore is provided with equalizing pressure hole.

With respect to prior art, pipeline pressure table described in the utility model has following advantage:

Automatically close explosion, front first instrument wind special anti-explosion valve valve of breakaway poing, effectively Accident preventionExpand. Because spool is provided with equalizing pressure hole, while not needing human intervention to complete fault, automatically cut off,After fault recovery, automatically reset. Do not need to find the unexpected explosion of generation pipeline, front first valve of cut-off pointClosed, this valve can be closed moment, avoids causing a large amount of media to leak, enlargement loss; PreventBecause system pressure reduces, cause system interlock shutdown.

Brief description of the drawings

The accompanying drawing that forms a part of the present utility model is used to provide further understanding of the present utility model,Schematic description and description of the present utility model is used for explaining the utility model, does not form this realityWith novel improper restriction. In the accompanying drawings:

Fig. 1 is the structural representation described in the utility model embodiment.

Description of reference numerals:

1-valve body; 2-spool; 3-equalizing pressure hole; 4-glass surface; 5-binding post; 6-wiring nut;7-spacing hole; 8-locating hole; 9-alignment pin.

Detailed description of the invention

It should be noted that, in the situation that not conflicting, in embodiment and embodiment in the utility modelFeature can mutually combine.

In description of the present utility model, it will be appreciated that term " " center ", " longitudinally ", " horizontal strokeTo ", " on ", D score, 'fornt', 'back', " left side ", " right side ", " vertically ", " waterFlat ", orientation or the position relationship of indicating such as " top ", " end ", " interior ", " outward " they are based on attachedOrientation shown in figure or position relationship, be only the utility model and simplified characterization for convenience of description, and notBe instruction or the hint device of indication or element must there is specific orientation, with specific orientation structure andOperation, therefore can not be interpreted as restriction of the present utility model. In addition term " first ", " second ",For describing object, and can not be interpreted as instruction or hint relative importance or the implicit indication that indicates Deng onlyThe quantity of the technical characterictic showing. Thus, the feature that is limited with " first ", " second " etc. can be expressedOr impliedly comprise one or more these features. In description of the present utility model, unless separately hadIllustrate, the implication of " multiple " is two or more.

In description of the present utility model, it should be noted that, unless otherwise clearly defined and limited,Term " installation ", " being connected ", " connection " should be interpreted broadly, and for example, can be to be fixedly connected with,Also can be to removably connect, or connect integratedly; Can be mechanical connection, can be also electrical connection;Can be to be directly connected, also can indirectly be connected by intermediary, can be the company of two element internalsLogical. For the ordinary skill in the art, can understand above-mentioned term at this by concrete conditionConcrete meaning in utility model.

Describe below with reference to the accompanying drawings and in conjunction with the embodiments the utility model in detail.

A kind of pipeline pressure table, comprises table body and explosion-proof valve, and described table body comprises watchcase, and establish at the watchcase back sideHave bonnet, form binding post installation cavity between bonnet and watchcase, some binding posts 5 are positioned at this installation cavityAnd with watchcase on installing hole matched in clearance, between binding post 5 and watchcase, be provided with binding post fixed head,On this binding post fixed head, have the spacing hole 7 passing through for binding post, the hole of this spacing hole 7 is along extending out shapeBecome locating hole 8, binding post 5 inserts after spacing hole and forms interference hole between its post jamb and the hole wall of locating holeRoad, alignment pin 9 is with this interference duct interference fit and clamp binding post 5; Described explosion-proof valve comprises valve body1 and spool 2, described valve body 1 left and right is respectively spool import and outlet, and described spool inlet diameter slightlyBe less than valve core diameter, described spool inlet diameter is greater than spool outlet diameter; On described spool, there is equilibrium pressurePower hole 3.

Binding post comprises cylinder and insulation inserts, and cylinder comprises smooth department, the right-hand member of left-hand thread portion, centreRight-hand thread portion, this insulation inserts is interference fitted on the smooth department of cylinder, the left-hand thread portion of binding post byLeft-to-right is combined with wiring nut 6, left locking nut successively, and the right-hand thread portion of binding post is combined with right lockJack panel.

Spool 2 slightly larger in diameter are in spool inlet diameter, and spool inlet diameter is greater than spool outlet diameter, dressJoin formula valve body is heated, the spool of special anti-explosion valve is carried out to K cryogenic treatment, spool is provided with balancePressure port 3.

When normal operation, the pressure reduction between spool inlet pressure P1 and spool outlet pressure P2 is not enough toPromote spool 2 and move to closed condition, medium will flow out by valve chamber, spool 2, now flows outRate-of flow be F1, once when pipeline after special valve ruptures, explosion, spool outlet pressureP2 is in atmospheric pressure state, and now spool outlet pressure is normal pressure P3, spool inlet pressure P1 and pipelineInternal pressure is the same, and the pressure reduction between spool inlet pressure P1 and spool outlet pressure P2 increases suddenly like thisGreatly, pressure reduction will promote spool 2 moment and move to closed condition, close special valve, only leave spool 2On equalizing pressure hole 3 can flow through micro-medium, the rate-of flow now flowing out is revealed while being faultFlow F3, when rupturing, after point of burst repairs, is undertaken by the equalizing pressure hole 3 on spool 2Pressure balance, spool inlet pressure P1 and spool outlet pressure P2 pressure reduction reduce gradually, when spool entersAfter mouth pressure P1 and spool outlet pressure P2 balance, spool 2 returns to normal shape under Action of Gravity FieldState.

The foregoing is only preferred embodiment of the present utility model, not new in order to limit this practicalityType, all within spirit of the present utility model and principle, any amendment of doing, be equal to replacement, improveDeng, within all should being included in protection domain of the present utility model.

Claims (3)

1. a pipeline pressure table, is characterized in that: comprise table body and valve body, described table body comprises tableShell, the watchcase back side is provided with bonnet, forms binding post installation cavity between bonnet and watchcase, some binding posts positionIn this installation cavity and with watchcase on installing hole matched in clearance, between binding post and watchcase, be provided with wiringPost fixed head, has the spacing hole passing through for binding post, the edge, hole of this spacing hole on this binding post fixed headExtend out formation locating hole, after binding post insertion spacing hole, between its post jamb and the hole wall of locating hole, form interferenceDuct, alignment pin and this interference duct interference fit also clamp binding post; Described valve body comprises valve body and valveCore, described valve body left and right is respectively spool import and outlet, it is straight that described spool inlet diameter is slightly less than spoolFootpath, described spool inlet diameter is greater than spool outlet diameter; On described spool, there is equalizing pressure hole.

2. pipeline pressure table according to claim 1, is characterized in that: described binding post comprisesCylinder and insulation inserts, cylinder comprises left-hand thread portion, middle smooth department, the right-hand thread portion of right-hand member, shouldInsulation inserts is interference fitted on the smooth department of cylinder, and the left-hand thread portion of binding post coordinates from left to right successivelyHave wiring nut, left locking nut, the right-hand thread portion of binding post is combined with right locking nut.

3. pipeline pressure table according to claim 1, is characterized in that: described valve core diameter slightlyBe greater than spool inlet diameter, spool inlet diameter is greater than spool outlet diameter, and assembled adds valve bodyHeat, carries out K cryogenic treatment to the spool of special anti-explosion valve, and spool is provided with equalizing pressure hole.