CN207096139U - A kind of constant temperature measuring apparatus for being used to measure gas PVT properties - Google Patents

A kind of constant temperature measuring apparatus for being used to measure gas PVT properties Download PDF

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Publication number
CN207096139U
CN207096139U CN201720601173.8U CN201720601173U CN207096139U CN 207096139 U CN207096139 U CN 207096139U CN 201720601173 U CN201720601173 U CN 201720601173U CN 207096139 U CN207096139 U CN 207096139U
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pressure
temperature
circulation
pump
circulating pump
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CN201720601173.8U
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金辉
龙方宇
夏辉
李红元
潘凯
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Maintenance and Test Center of Extra High Voltage Power Transmission Co
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Maintenance and Test Center of Extra High Voltage Power Transmission Co
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Abstract

The utility model discloses a kind of constant temperature measuring apparatus for being used to measure gas PVT properties, described device includes:External circulating pump (1), the external circulation fluid storage tank of the circulating pump and temperature control system;Insulation shell (2), including outer foam heat-insulation layer, inner steel housing, measurement module and operating desk (4), circulation fluid circulation plates (7) are set on insulation shell (2) inwall;Circulating pump (1) is connected by pipeline with circulation fluid circulation plates (7);Monitoring device (3), including temperature monitoring system, pressure monitor system and data acquisition logging system.The utility model internal volume is big, whole gas cylinder and measuring apparatus can be put into device;Operating temperature range is big, can complete the accurate temperature controlling in the range of subzero 30 DEG C to 90 DEG C above freezing;Multifunctional modular, changing internal module later can be with measurement temperature pressure curve, and Stress control is flexible, and can simulate malleation can also simulate negative pressure.

Description

A kind of constant temperature measuring apparatus for being used to measure gas PVT properties
Technical field
A kind of measurement apparatus of pressure and temp volume is the utility model is related to, more particularly to it is a kind of for measuring gas PVT The constant temperature measuring apparatus of property.
Background technology
In the analysis and research and design of chemical process, pressure, volume and the temperature of fluid are the most basic property of fluid One of, and be can be measured directly by testing.And many other macroscopic properties such as interior energy, entropy, Gibbs free energys Deng all inconvenient direct measurement, they need to be calculated using the data and basic thermodynamic relational expressions of fluid.Therefore, fluid The research of PVT relations be an important element task.In production and research process, it is often necessary to the pressure of processing gas The conversion of power, temperature, volume, quality etc., it is scaled standard state, or standard quality.But The Ideal-Gas Equation Only relatively low in pressure, approximation meets this relation in the case that temperature is higher.Experiment proves that the pressure of gas is higher, temperature is lower, This deviation is bigger.Therefore need to describe the relation between gas PVT suitable for the equation of state of real gas.
Hundreds of kinds of state equations have been developed at present, a small number of state equations can also be used for gas-liquid two-phase.But neither one State equation can describe the state equation of the majority of gas in the range of engineer applied.The method for establishing EOS:Practical application is with half Based on the theory of experience half.Therefore substantial amounts of measured data is needed to do basis, measured data needs device can be with constant temperature and can be with The pressure and temp volume of accurate measurement system, PVT relation of the pure material under equilibrium state, can be expressed as three-dimension curved surface, actual Direct 3 variables change and measured and unrealistic simultaneously in measurement process, usually separately do, the pressure volume under certain temperature Curve, the temperature, pressure curve under certain volume, the temperature volume curve under certain pressure.It is suitable according to these data, selection State equation is studied.Therefore need a device to ensure the stability of the temperature and pressure of measurement system, particularly exist Subzero 30 DEG C are arrived 90 DEG C of scopes above freezing, are the major temperature scope of most industrial equipment operations, and have foot in this device Enough space placement force temperature measuring equipment, gas cylinder etc. equipment.
At present, the measurement apparatus of in the market can not meet demand, the constant temperature for mainly have the following aspects 1, having on the market Device is all that heater is directly installed inside heat-insulation layer, directly controls heater with temperature control, measures, shortcoming is The fluctuation of temperature is too big, often in the temperature fluctuation of 1-2 degree, can not meet PVT measurement accuracy.2nd, constant temperature at present on the market Equipment, thermostat is mainly closed, there is no equipment operation hole, once opening insulating box, just destroy isoperibol, 3, at present Equipment most of internal volumes in market are less than normal, can not accommodate steel cylinder and measuring apparatus simultaneously.
Utility model content
The purpose of this utility model is in view of the shortcomings of the prior art, there is provided a kind of to be used to measure gas PVT properties Constant temperature measuring apparatus.The measurement apparatus operating temperature range is big, can complete the essence in the range of subzero 30 DEG C to 90 DEG C above freezing True temperature control, and malleation or negative pressure are simulated simultaneously.
The purpose of this utility model is achieved through the following technical solutions:A kind of perseverance for being used to measure gas PVT properties Temperature measurement device, the constant temperature measuring apparatus include:
External circulating pump 1, the external circulation fluid storage tank of the circulating pump and temperature control system;The running temperature of the measurement apparatus By the control circulating pump control of external temperature control system;
Insulation shell 2, including outer foam heat-insulation layer, inner steel housing, measurement module and operating desk 4, insulation shell 2 Circulation fluid circulation plates 7 are set on inwall;The measurement module is pressure temperature measuring module 5, is arranged in steel housing;It is described Circulating pump 1 is connected by pipeline with circulation fluid circulation plates 7;
Monitoring device 3, including temperature monitoring system, pressure monitor system and data acquisition logging system.
Further, the pressure temperature measuring module 5 measures container 53 by high-pressure cylinder 51, pressure-reducing valve 52, and pressure passes Sensor 54, temperature sensor 55, vavuum pump 56 and exhaust gas cleaner 57 form;The high-pressure cylinder 51 passes through pipeline and measurement Container 53 connects, and the pipeline between high-pressure cylinder 51 and measurement container 53 is provided with pressure-reducing valve 52, and measurement container 53 passes through respectively Pipeline and pressure sensor 54, temperature sensor 55 and vavuum pump 56 connect, and lead between vavuum pump 56 and exhaust gas cleaner 57 Piping connects;The pressure sensor 54 and temperature sensor 55 are connected by data wire with monitoring device 3.
Further, the circulating pump 1 is heat cycles pump or coolant circulation pump, when circulating pump is heat cycles pump, is followed Ring liquid is high purity water, and when circulating pump is coolant circulation pump, circulating liquid is ethylene glycol or alcohol.
Further, the place carry 5-10 block circulation fluids as needed beyond the inwall division operation platform 4 of insulation shell 2 Circulation plates 7, insulation cladding is penetrated by stainless steel pipes by pipeline UNICOM, external circulating pump 1 between adjacent circulation liquid circulation plates 7 After body 2, the circulation fluid circulation plates 7 with hanging over inwall are connected to form loop, and circulation fluid enters circulation fluid circulation plates 7 from circulating pump 1, Then circulating pump 1 is flowed back to again.
Further, the operating desk 4 is arranged on the middle part of insulation shell 2, the lucite by cover plate and with handle hole Form, emgloves is installed on handle hole.
Operation principle of the present utility model is as follows:The utility model controls heat cycles pump by circulation fluid using external temperature control The circulating cooling pipe squeezed into measurement apparatus, the temperature in control system, operating personnel are directly monitored by external monitoring system Temperature and pressure data in system, the equipment in insulating box is directly operated by the handle hole in equipment.Internal unit is mould Block formula arranges that pressure and temp correction module is arranged in insulation shell.
Pressure temperature measuring module built in pressure sensor 54 and temperature sensor 55, temperature survey is done using thermocouple, And preset connection data wire.Gas cylinder 51 does source of the gas, and pressure-reducing valve 52 depressurizes, and under test gas is thrown into measurement container 53, so Monitor its pressure and temp with pressure sensor 54 and temperature sensor 55 afterwards to change, then adjusting measurement with rearmounted vavuum pump 56 holds Pressure in device, ensure measurement range in 0.5-1.2 atmospheric pressure, wait after measurement finishes, residual gas is discharged into tail gas Inside processing unit 57, guarantee test safety and environmental protection.
Outside temperature control system directly controls external heat cycles pump, and heat cycles pump controls the liquid temperature in circulation fluid storage tank Degree, and liquid pressing in storage tank is squeezed into circulating cooling pipe, for ensureing the temperature in insulating box, external monitoring record system System includes temperature monitoring system and pressure monitor system, and the data of the temperature sensor and pressure sensor in insulation shell are passed It is defeated and show.Insulating box hull outside is foam heat-insulation layer, and inside is steel inwall, and inwall hangs different numbers as needed The circulation fluid circulation plates of amount.By detachable pipeline UNICOM between circulation fluid circulation plates.
Compared with prior art, the utility model has the advantages that:In measurement apparatus provided by the utility model Portion's volume is big, whole gas cylinder and measuring apparatus can be put into device;Operating temperature range is big.Subzero 30 DEG C can be completed Accurate temperature controlling in the range of 90 DEG C above freezing;Multifunctional modular, change internal module after can with measurement temperature pressure curve, Dew point hygrometer can also be corrected, Stress control is flexible, and can simulate malleation can also simulate negative pressure.Gas can effectively be measured PVT properties, and correction dew point hygrometer.
Brief description of the drawings
Fig. 1 is the appearance schematic diagram of the utility model device;
Fig. 2 is circulating cooling plate schematic diagram;
Fig. 3 is pressure temperature measuring module diagram;
Fig. 4 is that insulation shell hangs the profile after circulation fluid circulation plates;
Marked in figure:1- circulating pumps, 2- insulation shells, 3- monitoring devices, 4- measurement apparatus operation panels, 5- pressure and temps are surveyed Measure module, 7- circulation fluid circulation plates.
Embodiment
Technical scheme is described in further details with specific embodiment below in conjunction with the accompanying drawings, but not limited to In following technical scheme.
Embodiment 1
As shown in Figure 1 to 4, the constant temperature measuring apparatus includes:External circulating pump 1, the circulating pump are heat cycles Pump, the external circulation fluid storage tank of heat cycles pump and temperature control system, circulating liquid are high purity water;The running temperature of the measurement apparatus By the control circulating pump control of external temperature control system;
Insulation shell 2, including outer foam heat-insulation layer, inner steel housing, measurement module and operating desk 4;Operating desk 4 by Cover plate and the lucite composition with handle hole, are provided with emgloves on handle hole;The inwall division operation platform 4 of insulation shell 2 with Outer place carry 5-10 block circulation fluids circulation plates 7 as needed, by pipeline UNICOM between adjacent circulation liquid circulation plates 7, outside Put after heat cycles pump 1 penetrates insulation shell 2 by stainless steel pipes, formation is connected with the circulation fluid circulation plates 7 for hanging over inwall Loop, circulation fluid enter circulation fluid circulation plates 7 from heat cycles pump 1, then flow back to heat cycles pump 1 again;Circulation fluid circulation plates 7 By load bearing frame, stainless steel circulation fluid pipeline and groups of fins into.
Monitoring device 3, including temperature monitoring system, pressure monitor system and data acquisition logging system;
Measurement module is pressure temperature measuring module 5 in the present embodiment;Pressure temperature measuring module 5 by high-pressure cylinder 51, Pressure-reducing valve 52, container 53 is measured, pressure sensor 54, temperature sensor 55, vavuum pump 56 and exhaust gas cleaner 57 form;Institute State high-pressure cylinder 51 to be connected with measurement container 53 by pipeline, the pipeline between high-pressure cylinder 51 and measurement container 53, which is provided with, to be subtracted Pressure valve 52, measurement container 53 are connected by pipeline and pressure sensor 54, temperature sensor 55 and vavuum pump 56 respectively, vavuum pump Connected between 56 and exhaust gas cleaner 57 by pipeline;The pressure sensor 54 and temperature sensor 55 by data wire with Monitoring device 3 is connected.
The measurement apparatus is used for 20~90 DEG C of test gas PVT properties, as follows using process:Circulation fluid storage tank is injected Enough circulation fluids, heat cycles pump is opened, the circulation plates that circulation fluid is squeezed into case, is started the cycle over, set initial temperature, open Begin to heat, open temperature, pressure measurement apparatus, start measurement temperature change, waiting temperature change is close stable, i.e. high temperature fluctuations Within 0.3 degree, low temperature is fluctuated within 0.1 degree, maintains 1-2 hours, is opened high-pressure cylinder I 51 main valve, is then opened Pressure-reducing valve I 52, pressure is adjusted, the pressure in measurement container 53 is reached predetermined pressure, such as needs pressure subatmospheric, then beat Open vavuum pump I 56 to be evacuated, it is ensured that pressure, which reaches, in measurement container 53 specifies numerical value, continues to balance 1-2 hours, makes internal all Device temperature pressure reaches balance, starts the measurement of gas pressure and temperature, then heats up, and after waiting 1-2 hours to balance, continues Measurement, wait all be completed that residual gas is emitted into exhaust gas processing device I 57, close all devices.
When needing the measurement gas PVT properties (less than 20 DEG C) under cryogenic, heat cycles pump is replaced with into cooling Circulating pump, temperature control system, and external circulation fluid storage tank are set on coolant circulation pump, cooling circulation liquid body is alcohol or second two Alcohol, gas PVT properties, process such as 20~90 DEG C of test process are tested in cryogenic conditions.
Foregoing description is the simplest metering system of insulating box, can adjust corresponding operating process as needed.

Claims (5)

1. a kind of constant temperature measuring apparatus for being used to measure gas PVT properties, it is characterised in that the constant temperature measuring apparatus includes:
External circulating pump (1), the external circulation fluid storage tank of the circulating pump and temperature control system;The running temperature of the measurement apparatus by External temperature control system control circulating pump control;
Insulation shell (2), including outer foam heat-insulation layer, inner steel housing, measurement module and operating desk (4), insulation shell (2) circulation fluid circulation plates (7) are set on inwall;The measurement module is pressure temperature measuring module (5), is arranged on steel housing It is interior;The circulating pump (1) is connected by pipeline with circulation fluid circulation plates (7);
Monitoring device (3), including temperature monitoring system, pressure monitor system and data acquisition logging system.
2. the constant temperature measuring apparatus as claimed in claim 1 for being used to measure gas PVT properties, it is characterised in that the pressure Temperature-measuring module (5) is by high-pressure cylinder (51), pressure-reducing valve (52), measurement container (53), pressure sensor (54), TEMP Device (55), vavuum pump (56) and exhaust gas cleaner (57) composition;The high-pressure cylinder (51) passes through pipeline and measurement container (53) connect, the pipeline between high-pressure cylinder (51) and measurement container (53) is provided with pressure-reducing valve (52), measurement container (53) point Do not connected by pipeline and pressure sensor (54), temperature sensor (55) and vavuum pump (56), vavuum pump (56) and tail gas are net Makeup is connected between putting (57) by pipeline;The pressure sensor (54) and temperature sensor (55) pass through data wire and monitoring Device (3) is connected.
3. the constant temperature measuring apparatus as claimed in claim 1 for being used to measure gas PVT properties, it is characterised in that the circulation Pump (1) is heat cycles pump or coolant circulation pump, and when circulating pump is heat cycles pump, circulating liquid is high purity water, and circulating pump is During coolant circulation pump, circulating liquid is ethylene glycol or alcohol.
4. the constant temperature measuring apparatus for being used to measure gas PVT properties as described in claims 1 to 3 is any, it is characterised in that institute The place carry 5-10 block circulation fluid circulation plates (7) as needed beyond insulation shell (2) inwall division operation platform (4) are stated, it is adjacent By pipeline UNICOM between circulation fluid circulation plates (7), after external circulating pump (1) penetrates insulation shell (2) by stainless steel pipes, It is connected to form loop with the circulation fluid circulation plates (7) for hanging over inwall, circulation fluid enters circulation fluid circulation plates (7) from circulating pump (1), Then circulating pump (1) is flowed back to again.
5. the constant temperature measuring apparatus as claimed in claim 4 for being used to measure gas PVT properties, it is characterised in that the operation Platform (4) is arranged on the middle part of insulation shell (2), is made up of cover plate and the lucite with handle hole, breast is provided with handle hole Rubber gloves.
CN201720601173.8U 2017-05-26 2017-05-26 A kind of constant temperature measuring apparatus for being used to measure gas PVT properties Active CN207096139U (en)

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CN201720601173.8U CN207096139U (en) 2017-05-26 2017-05-26 A kind of constant temperature measuring apparatus for being used to measure gas PVT properties

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108828137A (en) * 2018-04-19 2018-11-16 辽宁石油化工大学 A kind of controllable lift is used to measure the method and apparatus of Gas Compression Factor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108828137A (en) * 2018-04-19 2018-11-16 辽宁石油化工大学 A kind of controllable lift is used to measure the method and apparatus of Gas Compression Factor

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