RU215873U1 - DEVICE FOR PREPARING HIGH-PRESSURE FLUID SAMPLES FOR ANALYSIS WITH A LOW-PRESSURE DEVICE - Google Patents

Abstract

The utility model relates to the field of measuring and analytical equipment. The proposed apparatus for preparing fluid samples for analysis by a low pressure instrument, shown in FIG. 1 contains a fluid supply valve (K1), a first reduction stage containing a first pressure regulator (KP1), the inlet of which is connected to the outlet of said valve (K1), a first pressure gauge (MH1) installed at the inlet of said first reduction stage, a second pressure gauge (MH2) installed at the outlet of the said first reduction stage, the second reduction stage containing the second pressure regulator (KR2), the valve (K2), the inlet of which is connected to the inlet of the first reduction stage, and the outlet - to the inlet of the said second reduction stage, a safety valve (KP1), made with the possibility of emergency pressure relief at the inlet of the aforementioned second reduction stage when the maximum allowable pressure value is exceeded, the receiver (RS1), the input of which is connected to the output of the mentioned second reduction stage, and the output - to the sample supply line to the gas analyzer, pressure meter ( МН3) and a rotameter (UR1) installed on the mentioned sample supply line to the gas analyzer.

Description

The utility model relates to the field of measuring and analytical equipment, and more specifically to devices for sampling gas, more specifically to devices for sampling gas from a high pressure pipeline for the purpose of analyzing samples with gas analyzers designed for low fluid pressure.

BACKGROUND OF THE INVENTION

Known portable oxygen analyzer KS 50.430-000 containing gas inlets, reducer, valves and housing (see https://bacs.ru/userdata/products/analytical-complexes/anoks/ks-50.430-000-re-analyzator- kiloroda-perenosnoj.pdf). In the well-known measuring device, there is no regulation and control over the main parameters of the measured medium (pressure, flow rate), which determine the declared measurement accuracy, and only one-stage reduction is provided. This prevents the device from being used on lines with high inlet pressure and limits the accuracy of measuring medium parameters.

DISCLOSURE OF UTILITY MODEL

The objective of this utility model is to create a device for preparing samples of a fluid medium, which has a combination of the following qualities:

- the possibility of lowering the pressure in a wide range from 0 to 22 MPa to a pressure suitable for supplying a sample to a gas analyzer,

- ensuring the supply to the sensitive element (sensor) of the gas analyzer of the working medium with the specified parameters,

- the ability to control pressure and volumetric flow in real time,

- the ability to work with any type of gas analyzers, including in-line gas analyzers,

- the presence of elements that stabilize the pressure and flow of the sample,

- delay of sample supply to the gas analyzer no more than 30 s.

The technical result of the utility model is that due to the presence of two stages of reduction - high and low pressure, a wider range of fluid pressure at the inlet is provided.

The above problem is solved due to the fact that the proposed device for preparing high-pressure fluid samples for analysis by a low-pressure instrument contains:

fluid supply valve (K1),

the first reduction stage containing the first pressure regulator (KP1), the inlet of which is connected to the outlet of said valve (K1),

the first pressure gauge (MH1) installed at the inlet of the said first reduction stage,

the second pressure gauge (MH2) installed at the outlet of the said first reduction stage,

the second reduction stage containing the second pressure regulator (KR2), the valve (K2), the inlet of which is connected to the inlet of the first reduction stage, and the outlet - to the inlet of the said second reduction stage,

safety valve (KP1), made with the possibility of emergency pressure relief at the inlet of the aforementioned second reduction stage when the maximum allowable pressure value is exceeded,

a receiver (PC1), the input of which is connected to the output of the mentioned second reduction stage, and the output is connected to the sample supply line to the gas analyzer,

a head meter (MH3) and a rotameter (UR1) installed on the mentioned sample supply line to the gas analyzer.

The design of this system allows you to choose flow direction schemes depending on the inlet pressure, it has the ability to carry out one or two-stage reduction, regulating and stabilizing the pressure and flow rate of the measured gas medium.

The system is capable of performing intermediate multi-stage drainage to ensure the appropriate rate of renewal of the measured medium when applied to the sensitive element (sensor) of the gas analyzer.

The device is designed to work with any type of gas analyzers, including flow analyzers, and is compact, versatile and mobile.

Further, the above described device is described on the example of some of its private and preferred forms of embodiment.

In one particular embodiment, the aforementioned low pressure instrument is a gas analyzer.

In yet another particular embodiment, the fluid pressure at the inlet of the aforementioned first reduction stage is up to 7.5 MPa.

In another particular form of embodiment, the fluid pressure at the outlet of the above-mentioned receiver is from 0 to 0.07 MPa.

In one of the particular forms of embodiment, the aforementioned maximum allowable pressure value at which the aforementioned safety valve (SV) is activated is 7 bar.

In yet another particular form of embodiment, the above described device can be provided with a quick coupling (BRS1), made with the possibility of connecting a high pressure hose (HPR).

In another particular form of embodiment, the above described device can be equipped with a quick coupling (BRS2), made with the possibility of connecting a gas analyzer.

In one of the particular forms of embodiment, the above device can be equipped with a mechanical impurities filter (F1) installed in the fluid supply line before the above-mentioned fluid supply valve (K1).

In yet another particular embodiment, the device described above may be provided with a valve (SC) for sample discharge and/or rapid sample renewal, the inlet of which is connected between the aforementioned first and second reduction stages.

In another particular form of embodiment, the above device can be provided with a valve (K4) for sample dumping and/or quick sample replacement, the inlet of which is connected to the aforementioned receiver (PC1).

In one particular embodiment, the aforementioned valves K1, K2, K3 and K4 are needle valves.

In another private form of embodiment, the above described device contains a housing made in the form of a shockproof dustproof case.

In another private form of embodiment, the device described above contains a front panel, while the controls, controls and connections to external highways are displayed on its front panel.

In one of the particular forms of embodiment, on the front panel of the aforementioned device, a mnemonic diagram can be applied to facilitate the work of the operator.

In yet another particular form of embodiment, the above described device can be additionally equipped with a tripod, configured to provide a horizontal installation of the body.

It must be understood that in this text the design is characterized only by such features that are sufficient to solve the problem, implement the purpose and achieve the selected technical result; a special mention of all without exception the features and utility characteristics of the device is not required if specialists should know that products of the same kind have such features and utility characteristics and without them the main purpose is not realized; Moreover, it is not required to limit the generalized features to any specific options, if they should be known to specialists and (or) can be selected according to known rules.

The design and use of the device is clearly illustrated by figures 1, 2 on the example of private and specific embodiments.

BRIEF DESCRIPTION OF THE DRAWINGS

In FIG. 1 shows a general view of the assembled device. In FIG. 2 shows the appearance of the device. The following designations are used in the figures:

RVD - high pressure hose.

BRS1 and BRS2 - quick couplings.

KR1 - pressure regulator of the first stage of reduction.

K1 - medium supply valve.

K2 - valve.

F1 - mechanical impurities cleaning filter.

In - device input.

MH1 and MH2 - pressure gauges.

Out - device output.

R - Receiver.

КР2 - pressure regulator of the second stage of reduction,

MH3 - pressure gauge,

UR1 - rotameter,

K3 and K4 - valves of waste systems (needle) for purging and prompt exchange of the medium sample.

KP1 - safety valve.

IMPLEMENTATION OF UTILITY MODEL

An apparatus for preparing fluid samples for analysis by a low pressure instrument, shown in FIG. 1, contains: fluid supply valve (K1),

the first reduction stage containing the first pressure regulator (KP1), the inlet of which is connected to the outlet of said valve (K1),

the first pressure gauge (MH1) installed at the inlet of the said first reduction stage,

the second pressure gauge (MH2) installed at the outlet of the said first reduction stage,

the second reduction stage containing the second pressure regulator (KR2),

valve (K2), the inlet of which is connected to the inlet of the first stage of reduction, and the outlet - to the inlet of the said second stage of reduction,

safety valve (KP1), made with the possibility of emergency pressure relief at the inlet of the aforementioned second reduction stage when the maximum allowable pressure value is exceeded,

a receiver (PC1), the input of which is connected to the output of the mentioned second reduction stage, and the output is connected to the sample supply line to the gas analyzer,

a head meter (MH3) and a rotameter (UR1) installed on the mentioned sample supply line to the gas analyzer.

The device, the diagram of which is shown in Fig. 1 works as follows.

The device is connected to the sampling source (for example, to the main pipeline, etc.) by means of a high pressure hose (HPR) and a quick coupling (BRS1).

Before starting the system, depending on the inlet pressure level, the operator uses either one or two reduction stages, while the second stage (with the KP2 regulator) is always used, while the first stage (with the KP1 regulator) is connected in case of high inlet pressure ( for example, more than 6.9 bar). If the pressure is low enough (for example, less than 6.9 bar), the fluid flow passes through the bypass line through valve K2, bypassing the first reduction stage (with regulator KP1) and enters directly into the second reduction stage (with regulator KP2).

If the fluid pressure at the inlet to the device is greater than 6.9 bar, then to reduce the inlet pressure to the desired value, the needle valve K2 is closed and the fluid flow passes through the first stage KP1.

If the inlet pressure does not exceed the specified value, valve K2 is opened and the medium flows through the second stage KP2.

To protect the system from incorrect actions of the operator (opening the K2 valve at a pressure of more than 6.9 bar), a safety valve KSH is used, which operates at a pressure above 7 bar.

Starting the system (supplying the pressure of the gaseous medium) is carried out by means of smooth rotation of the handle of the needle valve K1.

At the inlet of the device, a filter for cleaning mechanical impurities F1 is installed.

Pressure control at this stage is carried out using the first (MH1) and second (MH2) pressure gauges.

At the next stage, the medium flow passes regulation and fine adjustment of the pressure through the second stage of reduction, using the pressure regulator KR2, reducing the pressure to the value required for the operation of the analyzer connected to the outlet of the device.

After reduction, the test medium enters the receiver (PC1) for additional stabilization, after which it enters the output of the device.

At this stage, pressure regulation is carried out by turning the handle of the pressure regulator KP2.

Pressure control is carried out using a pressure gauge (MNZ), flow control - using a rotameter (UR1).

For purging the system and prompt exchange of the medium sample, the device has two waste systems. These systems are opened and regulated by needle valves (K3) and (K4).

The design described above provides the ability to:

- pressure reduction in a wide range from 0 to 22 MPa to a pressure suitable for sample supply to the gas analyzer,

- supply to the sensitive element (sensor) of the gas analyzer of the working medium with the specified parameters,

- control of pressure and volume flow in real time,

- work with any types of gas analyzers, including flow gas analyzers,

- the presence of elements that stabilize the pressure and flow of the sample,

- delay of sample supply to the gas analyzer no more than 30 s.

Claims (4)

1. A device for preparing high-pressure fluid samples for analysis by a low-pressure device, containing a fluid supply valve (K1), a first reduction stage containing a first pressure regulator (KP1), the inlet of which is connected to the outlet of the said valve (K1), the first pressure gauge (MH1) installed at the inlet of the mentioned first reduction stage, the second pressure gauge (MH2) installed at the outlet of the mentioned first reduction stage, the second reduction stage containing the second pressure regulator (KR2), the valve (K2), the input of which is connected to the inlet of the first stage reduction, and the output - to the input of the mentioned second reduction stage, the safety valve (KP1), made with the possibility of emergency pressure relief at the inlet of the aforementioned second reduction stage when the maximum allowable pressure value is exceeded, the receiver (RS1), the input of which is connected to the output of the mentioned second stage reduction, and the output - to the sample supply line to the gas analyzer, a head meter (MH3) and a rotameter (UR1) installed on the said sample supply line to the gas analyzer. 2. The device according to claim 1, wherein the fluid pressure at the inlet of the aforementioned first reduction stage is up to 7.5 MPa. 3. The device according to claim. 1, in which the pressure of the fluid at the outlet of the above-mentioned receiver is from 0 to 0.07 MPa. 4. The device according to claim 1, characterized in that the aforementioned maximum allowable pressure value at which the aforementioned safety valve (KP1) operates is 7 bar.

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