CN1051247A - Universal connector for manometer - Google Patents

Abstract

A kind of annex of the instrument of setting pressure on the spot.Isolation pocket (injecting pressure transmission liquid) is set makes measured medium arrive instrument sensing element path partition; also be provided with vibration isolator and buffering antidetonation device; the protection instrument makes it satisfy operate as normal under the complex working condition; high viscosity; easily crystallization; electric heating coil (or self-limited type ribbon heater is set during the pressure measurement of easy freezing medium; steam drum); adhere at the member of the present invention anti-medium of a kind of fluoroplastic of surface-coated that contacts with measured medium; fouling and prolong maintenance cycle, spherical pair draw bail form make things convenient for instrument and scale thereof towards the correct installation of apparent place with improve the sealing reliability of connection place between other fluid circuits.

Effectively make common, inexpensive bourdon tube manometer replace costliness and the single meter specially of purposes, make it be suitable for and be satisfied with the needs of multiple request for utilization and field condition pressure measurement.

Description

Universal connector for manometer

The present invention is the manometer annex.

The liquid storage bend pipes such as manometer (hereinafter to be referred as instrument) pigtail shape commonly used that are used for the hydrodynamic pressure measurement in the past are as a kind of annex; be used to install instrument; also can store condensed fluid and cut off the path of steam type high temp medium to the instrument sensing element; improve and show the pressure correctness and avoid sensing element to stand temperatures involved reduction accuracy of instrument for a long time, but its spiral helicine body is often done to protect the so-called separator tube of the anti-medium impact of instrument, vibrations to use blood damage instrument by user's mistake.For preventing that measured medium from impacting, vibrations damage instrument, there is a kind of pressure gauge snubber (number of patent application: CN-85 2 01335) in past, pressure tapping (number of patent application: CN-87 2 07118), tensimeter protector (number of patent application: CN-89203907.8), seismic pressure gauge connector (number of patent application: CN-89204630.9), multi-purpose pressure meter (number of patent application: CN-88104975.1) with existing a kind of shock-proof pressure gauge, be respectively to use the screw thread pair gap, damping hole, crooked fluid passage, the aperture of damping plug, the micropore of poromerics is as the fluid passage, measured medium in a certain amplitude range is impacted, the buffering antihunt action has been played in vibrations, but because the damping force of these damping units can not obtain at the pressure measurement scene adjusting, the difference that does not adapt to each pressure tap is far away impacted, the actual needs of magnitude of vibrations and vibration frequency and seem invalid, moreover not isolated screw thread pair gap with measured medium, damping hole or crooked fluid passage very easily allow the solid sundries in the measured medium, crystals etc. block and the vacation that causes instrument is shown and pressed to preventing ambient vibration damage instrument and making the observer be easy to accurate reading, past is installed instrument with above-mentioned pigtail shape bend pipe, the transmission that weakens ambient vibration (as compressor block vibration etc.) has some benefits, but existing body looses big and is subjected to installation position restriction and the not good enough shortcoming of effect, and be used for field pipeline, container, be subjected to the influence of the strong wind sleet piping and druming rigidity deficiency that seems again in the time of on the device, other has a kind of aforesaid seismic pressure gauge connector, to weakening the ambient vibration transmission certain effect is arranged, but there is the complicated shortcoming of structure, also has a kind of existing anti-tensimeter that shakes, be in the watchcase of its sealing, to be full of fluid to prevent instrument parts impaired (as the hairspring unrest of shaking), but have the cost height and the relatively poor shortcoming of effect.For preventing that instrument parts and sensing element are subjected to the influence of measured medium corrosion; past is made the corrosion-resistant instrument of instrument parts and sensing element (as acidproof with resistant material; alkaline-resisting tensimeter); membrane pressure gage comes measuring media pressure; but these instrument costlinesses and purposes is single; a kind of corrosion pressure sensor (number of patent application: CN-89210263.2) have the single shortcoming of the high purposes of valency is equally arranged; when being used to that impact is arranged; (as the chlor-alkali pump discharge) usually do not have the effect that the protection instrument is kept normal pressure measurement when shaking mordant again medium pressure measurement; aforesaid multi-purpose pressure meter increase is provided with the damping element made from poromerics, this has been had improvement to a certain degree.For preventing that measured medium from freezing influence in the instrument sensing element because of low temperature environment, past has a kind of elastic pressure gauge (number of patent application: CN-88 2 01213) that sensing element and measured medium are isolated and charges into the antifreeze pressure transmitting medium of low-freezing, preventing effectively that instrument from being freezed influences, but also has the high shortcoming of the single cost of purposes.For preventing to contain the influence that solid impurity, easily crystallization, easily fouling, high viscosity or serious dirty dirty medium stop up instrument, there are a kind of impurities container (number of patent application: CN-87 2 04716) and aforesaid a kind of corrosion pressure sensor, multi-purpose pressure meter in past, respectively certain effect has been played in the anti-clogging of instrument.In addition, local mounted instrument of past is for making observer's accurate counting easily, install and fix instrument with the flexible connection nut, its scale face all can adjust to apparent place arbitrarily in the 360 ° of scopes in plane obtains when making instrument by dress, but when instrument is installed on than the high or low position of observer's horizontal line of sight (as built on stilts pipeline or lower pressure taps such as equipment), still there is the shortcoming be difficult to observe with accurate reading, also has the soft erection joint of a kind of tensimeter (number of patent application: CN-87 2 08273), install and fix instrument with flexible metal conduit or wire armoring pipe, all can adjusting to apparent place of required high and low position of instrument and scale face obtained, but have the obviously not enough shortcoming of rigidity.

Inventor of the present invention is after carrying out multiple development test; make the present invention eliminate aforementioned pressure table antidetonation joint; multi-purpose pressure meter; the shortcoming that impurities container etc. is had; play the effect that the local mounted instrument of protection is not damaged and prolongs its serviceable life during the pressure measurement work on the spot; ball reed pipe instrument (comprising electric teletransmission bourdon tube instrument) is suitable for and the needs that satisfy multiple different request for utilization and field condition pressure measurement; expand common Bourdon tube pressure gauge; the range of application of pressure vacuum meter and vacuum meter and replace existing corrosion-resistant class; shatter-proof and vibrationproof; class meter specially such as antifreeze; and make things convenient for correctly installing on the spot of instrument, can improve connecting joint place sealing property between other fluid circuits in addition.

Universal connector for manometer of the present invention (seeing accompanying drawing) by interface 1, elastic sealing gasket 2, holding screw 3, elastic washer 4, slit variable damper 5, ball connect 6, isolation pocket 7, cushion 8 and electric heating coil 9(or self-limited type ribbon heater, steam drum) constitute.At upper end and the joining interface 1 of manometer and lower end and connecting pipe (or pipeline, container, pressure taps such as machinery and equipment) joining ball connects between 6, be provided with the vibration isolator of forming by elastic sealing gasket 2 and cushion 8, weaken the transmission of ambient vibration to instrument, (when the ambient vibration amplitude is used under the situation about allowing in instrument, cushion 8 can omit need not), the surface-coated fluoroplastic of elastic sealing gasket 2 and cushion 8, prevent it in use to be adhered to the Metal Contact face and trouble when reducing maintaining, what sealing contact surface was sprained when preventing to install simultaneously may; Connect in 6 holes at the ball of connecting pipe to measured medium path between instrument sensing element (as bourdon tube), be provided with for bearing the equal rubber-like thin-walled of normal pressure or negative pressure isolation pocket 7, cut off the circulation of measured medium to instrument sensing element chamber, and in isolation pocket 7 and instrument sensing element chamber, fill with pressure transmission liquid, measured medium pressure is through isolation pocket 7, pressure transmission liquid is delivered to the instrument sensing element and makes instrumentation, if pressure transmission liquid is selected subzero liquid (as chlorination silicone oil) for use, but instrument just long-term work in higher temperatures to the lower temperature environmental baseline, because isolation pocket 7 cuts off the circulation of steam type high temp medium to the instrument sensing element, avoid the influence of instrument expanded by heating and improved the indicating value correctness, also prolonged simultaneously instrument serviceable life, can avoid the influence of Korrosionsmedium corrosion instrument sensing element in addition again, the pressure measurement that makes instrument parts that common material makes and sensing element (as the tin bronze bourdon tube) be applicable to various Korrosionsmediums also can avoid dirty dirty, contain solid impurity, crystallization is arranged, contain dust, fluid media (medium)s such as viscosity stop up the influence in instrument duct and sensing element chamber thereof; When measuring easy crystallization, high viscosity, low temperature environment easy freezing fluid medium pressure, ball connects 6 outside electric heating coil 9 promptly is set, to the measured medium and the crystal thereof that influence isolation pocket 7 operate as normal, scars are constant heats (or with self-limited type ribbon heater, steam drum), increase air flowability, reduce crystallinity and prevent that medium from freezing, to satisfy the needs of such medium pressure measurement; Connect 6 and isolation pocket 7 and a kind of fluoroplastic of the contacted surface-coated of measured medium at ball, make high viscosity or easily fouling, easy crystal medium and foulant thereof, crystalline solid be difficult for adhering to or stockpiling, to prolong the duration of work maintenance cycle; In the passage that isolation pocket 7 upper end hole oral instructions hydraulic fluids are flowed through, setting is by holding screw 3, the buffering antidetonation device that elastic washer 4 and slit variable damper 5 are formed, make through isolation pocket 7 and the next measured medium of pressure transmission liquid transmission and impact, vibrations are subjected to damping and weaken at this, just, the slit sectional area size of slit variable damper 5 changes damping force because can regulating, therefore when the instrument installation is used for different on-the-spot pressure taps, because of the also corresponding difference of required damping force just can obtain adjusting at the scene, reaching anti-medium impacts, the purpose of vibrations, moreover because the clean fluid that pressure transmission liquid uses for sealing, can the not result in blockage influence of damper slit passage, holding screw 3 and elastic washer 4 are to prevent that slit variable damper 5 is loosening during operation and use; Ball connects 6 bulb, upper end and connects with the Internal Spherical Surface of elastic sealing gasket 2, cushion 8 and form spherical pair draw bail form, therefore when instrument is installed its scale face correctly can obtain easily adjusting to apparent place, by interface 1 fixed instrumentation, if the draw bail form of spherical pair is used for the joint that connects between other fluid circuits, being difficult for taking place spraining because of the joint extremely causes the phenomenon of escape of liquid.

The present invention has the following advantages because above-mentioned formation is arranged:

(1) prevents to damage instrument because of ambient vibration.

(2) prevent because of measured medium impacts, vibrations damage instrument.

(3) avoided the impact of ambient vibration and measured medium, vibrations to cause the influence that gauge pointer rocks or trembles, improved and observe the counting accuracy.

(4) avoided the influence of steam type high temp medium high temperature, improved the instrument indication value correctness and prolonged serviceable life of instrument sensing element.

(5) avoid the influence of measured medium corrosion instrument parts and sensing element thereof, keep the instrument operate as normal and prolonged instrument serviceable life.

(6) prevent that measured medium from stopping up instrument duct, the maintenance cycle during having improved the pressure measurement reliability and having prolonged instrumentation.

(7) instrument is had comprehensive protective value by normal pressure measurement that multiple factor impacts, make the application of cheap ball reed pipe instrument more extensive simultaneously, the single meter specially of purposes to replace costliness.

(8) make things convenient for instrument correctly to install on the spot, improved the sealing reliability of connecting joint between other fluid circuits.

The simple declaration of accompanying drawing: 1 connects, 7 is electric heating coil (or self-limited type ribbon heater, steam drum) for cushion, 9 for isolation pocket, 8 for ball for slit variable damper, 6 for elastic washer, 5 for holding screw, 4 for elastic sealing gasket, 3 for interface, 2 among the figure.

Claims (6)

1, a kind of manometer annex universal connector for manometer is characterized in that:

1) forms vibration isolator by elastic sealing gasket 2, cushion 8 and weaken the ambient vibration transmission;

2) isolation pocket 7 cuts off the circulation of measured medium to instrument sensing element chamber, and connect a kind of fluoroplastic of 6 surface-coated that contact with measured medium at isolation pocket 7 and ball, prevent and avoid medium high temperature, freeze, single or multiple factor such as burn into obstruction causes the influence to the instrument operate as normal;

3) but ball connects 6 outer setting temperature adjustment constant temperature electric heating circle 9 (or self-limited type ribbon heater, steam drum), be used to measure the pressure of high viscosity, easily crystallization, easy freezing medium;

4) holding screw 3, elastic washer 4 and slit variable damper 5 are formed impact or the vibrations that buffering antidetonation device weakens measured medium;

5) connect 6 by ball and form spherical pair draw bail form with elastic sealing gasket 2, cushion 8, during by the dress manometer by interface 1 make the meter dial face correctly obtain easily adjusting to apparent place.

2, a kind of as in the claim (1) 1) described vibration isolator, it is characterized in that: used resilient material is butyl rubber or EP rubbers, silicon rubber, its surface-coated fluoroplastic.

3, a kind of as in the claim (1) 2) described isolation pocket, it is characterized in that: material therefor is chlorosulfonated polyethylene rubber or silicon rubber, fluororubber, and its shape has down two kinds of wedge shape Cylinders flat under cone and the last garden.

4, as in the claim (1) 2) fluoroplastic described in described a kind of fluoroplastic and the claim (2) are polychlorotrifluoroethylene, perfluoroethylene-propylene or teflon.

5, in a kind of claim (1) 4) described slit variable damper, it is characterized in that: the adjustable extent of slit sectional area is between 0.1～0.8 square millimeter.

6, according in the claim (1) 5) described spherical pair draw bail form, can be used for connecting erection joint between other fluid circuits.

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