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 [2].

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.

 

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