Damping device for manometers
(57) Abstract:The device is intended to measure the average pulse pressure, to smooth the pulsations of pressure of liquids and gases. The damping device is an acoustic filter inductive type having a capillary channel, and is movable in the form of a screw thread on one of proterty to each other tapered surfaces of the sleeve and the housing. At the entrance and exit devices installed filteredresults elements. The device has input and output fittings corresponding to the fitting of the protected pressure gauge. The technical result is to increase the reliability and life of the damping device. 3 C.p. f-crystals, 1 Il. The invention relates to a device for smoothing out the pulsations of pressure of liquids or gases and may find application in devices for measuring an average value of pulse pressure.Known damping device inductive-capacitive type, in which to smooth out pulsations of pressure is the coiled capillary tube of small diameter installed at the entrance and exit filteredresults the items placed in the cavity of the Sabbath.) does not introduce errors in the measurement of the average value of the pulsating pressure, but has a low reliability due to possible clogging of the capillary tube and the presence of solder, collapsing under the action of the hammer.The closest to the technical nature of the present device is a gauge damper, the capillary channel is made in the form of a screw thread on the walls are pressed into each other cylinders .The specified device also has a low reliability as forming a capillary channel pressed the cylinders are non-separable, and you should channel all of the device fails.The invention is directed to improving the reliability and lifetime of the damping device.This problem is solved due to the fact that in the proposed device, the capillary channel is made collapsible, which allows to clear the channel and regenerate its properties in case of clogging.Thus, the problem is solved due to the fact that the damping device, comprising a housing and a sleeve connected between the surfaces, at least one of which is screw to the CTL is made conical and are drawn to each other detachable connection compression between the housing and the sleeve, and the message ends of the screw channel with fittings made through filthadelphia elements, this detachable connection may be made in the form of nuts with flange, screw on case.For convenience, replacement filthadelphia elements they can be fixed in the housing and the sleeve, respectively, by means of screws and nuts, in addition, the sleeve may include an annular groove provided with a spiral channel, and the screw is made with a circular groove from interacting with him filteredresults element, the grooves must be communicated by a channel.The device illustrated in the drawing, which shows a cut along its centerline and cross section of the capillary channel.Position in the drawing indicate: device - 1, taper bushing - 2, the screw channel 3, input filtratsionnoi element 4, a nut 5, the output filtratsionnoi element 6, screw 7, a rubber o-ring, 8 channel 10.The device consists of a casing 1 having an internal cone-shaped cavity into which is inserted a conical sleeve 2 with a cut on its surface is protected pressure gauge. Inside the housing 1 has an input filtratsionnoi element 4, is fixed by a nut 5. Inside the sleeve 2 has an output filtratsionnoi element 6, fixed by means of screws 7. On the conical surface of the sleeve 2 by a larger diameter made two grooves, one of which is technical and is used for Assembly of the cutting tool when cutting a helical channel, and the other groove is made under a rubber o-ring 8. The sleeve 2 and the housing 1 are drawn together by means of a nut 9.The device operates as follows.The pressure of working medium is passed through the inlet fitting of the housing 1 and filtratsionnoi element 4 into the internal cavity of the housing. Further along the capillary channel formed by cutting on the conical surface of the sleeve 2 and the inner conical surface of the device, pressure is transmitted in technological groove in the sleeve and then obliquely drilled channel 10 is supplied to the output filteredresults element 6 and through the output connection to the measuring instrument.The oscillation of the working environment is like in the helical capillary channel, and when the flow passes through file dimension of the middle of the pulsating pressure of liquid or gas and has a higher reliability and a longer life, provide proposed sectional design of the capillary channel, which allows the purification and regeneration.Sources of information
1. USSR author's certificate N 787922, CL G 01 L 19/06, publ. 15.12.80. BI N 46.2. USSR author's certificate N 505918, CL G 01 L 19/06, publ. 05.03.76 BI N 9 (prototype). 1. Damping device for manometric devices, comprising a housing and a sleeve connected between the surfaces, at least one of which is screw channel, reported by the relevant ends with fittings casing and sleeve, characterized in that the said surface of the body and sleeves are made conical and are drawn to each other detachable connection, tightening between the housing and the sleeve, and the message ends of the screw channel with fittings made through filteredresults elements.2. The device under item 1, characterized in that the plug connection is formed by a nut with flange, screw on case.3. The device under item 1 or 2, characterized in that filteredresults elements fixed in the housing and the sleeve, respectively, by means of a screw and nut.4. The device according to 3, characterized t the point from interacting with him filteredresults element, these grooves communicated by a channel.
FIELD: gas industry; production and transportation of gas.
SUBSTANCE: proposed device has chamber filled with liquid reagent (methanol) and made in form of hermetic vessel connected with drain and filling tube and pulse line connecting the chamber with pressure sensor or pressure differential sensor of high accuracy. Lower end of tube located in chamber is connected with gas line and is provided with fluoroplastic pipe union whose orifice reduces gas exchange between chamber and pipe line.
EFFECT: enhanced reliability.
FIELD: measurement technology; media separators; chemical industry; power engineering; microbiological, food-processing and medical industries.
SUBSTANCE: proposed media separator is used for measuring the pressure of aggressive, toxic, high-viscosity, solidifying (polymerizing) and contaminated media at pulsation of pressure or hydraulic impacts together with pressure gauges. Proposed separator has housing with cover, separating member mounted inside this housing and pressure fluctuation dampener made in form of through hole with thread over part of its length; it is provided with adjusting screw and thrust screw closing the hole on opposite side. Threaded hole is connected with hole of outlet pipe union and with cavity formed by separating member and cover.
EFFECT: enhanced reliability; increased service life of measuring instrument; enhanced accuracy of transmission of pressure to measuring instrument.
3 cl, 2 dwg
FIELD: measurement technology; chemical, microbiological, food-processing industries; power engineering.
SUBSTANCE: proposed media separator is used for aggressive, toxic, high-viscosity, solidifying and contaminated media at pulsations of pressure or hydraulic impacts and other media under question together with use of pressure gauges. Proposed separator has body with inlet pipe union, cover with outlet pipe union and separating member made in form of bellows and mounted in cavity of cover; hole of bellows is located opposite inlet hole of pipe union.
EFFECT: low cost of separator; reduced mass; facilitated procedure of filling.
FIELD: measuring engineering.
SUBSTANCE: device comprises pressure chamber (11) defined between base (1) and separating diaphragm (2). The pressure chamber can be filled with the second fluid and provided with port (12) through which pressure can be transmitted by means of the second fluid to the cell for measuring pressure. The device has pickup for permanent control of the properties of mater that composes the second fluid, conductivity pickup that has at least one electrode (31), (32) which can be sensitive to the contamination of the second fluid by the first one due to the distortion of separating diaphragm (2) caused by changing controllable property of matter. The pickup is in communication with pressure chamber (11) through port (12) made in the pressure chamber.
EFFECT: accelerated operation.
12 cl, 2 dwg
FIELD: engineering of devices for transferring pressure.
SUBSTANCE: device for transferring pressure acting in first substance, second substance, containing base 1 with pressure chamber 4, which is separated from first substance by means of separating membrane 2, while active pressure can be transferred by means of second substance into pressure measuring cell. For appropriately timed detection of unavoidably nearing damage of separating membrane, advance notification detector contains chamber 6. Mounted in the chamber, indicator 7 continuously controls property of substance present in chamber with indicator. Separating wall 5 positioned on the side of first substance hermetically compacts aperture of chamber and during contact with first substance, being positioned in similar conditions of external effect with separating membrane 2, is destroyed before the separating membrane itself.
EFFECT: possible warning about nearing destruction of membrane.
8 cl, 2 dwg
FIELD: measuring technique.
SUBSTANCE: module (1) comprises pressure gage (6) mounted in housing (8) made separately from the housing of the module and protected with a special material. The housing of the pressure gage is set in compound (17) with which it is secured to the housing of the module. The housing of the pressure gage may be made of plastic. Electric leads (21) of the pressure gage can be partially enclosed by the housing.
EFFECT: simplified assembling.
12 cl, 3 dwg
FIELD: instrumentation for flying vehicles.
SUBSTANCE: proposed instrument transducer (sensor) includes structural member which is aircraft member directed to air flow. Structural member is just front part of nose fuselage, for example front part of antenna fairing; it is made in form of cone with at least two measuring openings to which channels for transmitting pressure to pressure conversion system are connected. External envelope of cone has two sections located in way of flow; heat conductivity of first section exceeds that of second section. Located within first section in structural member are heating elements connected with temperature control circuit on surface of first section. Length of first and second sections and their materials are so selected that temperature drops at preset mode from first section to second one. Sensor withstands high thermal loads.
EFFECT: enhanced reliability of aircraft; enhanced accuracy of determination of actual mode of flight as compared with external sensors.
14 cl, 3 dwg
FIELD: measuring technique.
SUBSTANCE: unit for measuring pressure has ceramic pressure pick-up 2, enclosed in metal case. Surface of case 1 being in contact with medium, where pressure has to be measured, during process of measurement are provided with coating 27 made of enamel or glass-type material. Surface coatings do not have ions of metal.
EFFECT: ability of universal application.
5 cl, 3 dwg
FIELD: the invention refers to measuring technique.
SUBSTANCE: the node(100) of the sensor of pressure includes a long sensor(102) of pressure attached with an insulated joint to an adjusted block(104) protective(120) shuts the insulated joint and the sensor(102) of pressure for preventing contact with working fluid medium. The protective element has a covering fulfilled with possibility of placing in it a long sensor of pressure and transmitting to it attached pressure. In the second variant of making the sensor of pressure has packing material between the cover and the sensor of pressure.
EFFECT: improves the work of the sensor of pressure.
26 cl, 4 dwg
SUBSTANCE: invention pertains to the measuring unit of a pressure transducer with a steady leakage to the sensor casing. The pressure unit (200) consists of assembly (202) of sensors with pipes (210, 212), running from pressure sensor (204) to insulator elements (206, 208) of the fluid media. The pressure sensor is located in the cavity (216) in the casing (214) of the unit. The casing of the unit consists of support elements (218, 220), joined with insulator elements of the fluid media, so as to provide for a barrier for draining fluid media in the cavity. Inlet holes (230, 232) with threads on the outer surface of the lower part of the casing of the unit connect the fluid media to the insulator elements of the fluid media through ducts (236, 238) in the casing of the unit.
EFFECT: increased carrying capacity of coplanar measuring pressure transducers.
28 cl, 13 dwg