CN206819618U - Manual pressure source can determine the experimental provision of multiple fluid pressure bulk temperature relation - Google Patents

Abstract

The experimental provision that Manual pressure source can determine multiple fluid pressure bulk temperature relation is made up of Manual pressure generator and measurement apparatus, mercury makees hydraulic fluid and sealing liquid, measurement apparatus body interior upper and lower ends are respectively in cone, it is middle cylindrical, measurement apparatus is by glass flange capillary, constant temperature circulating water leg, sealing liquid container lid, sealing liquid container, seal, constant temperature circulating water leg fixed structure, vacuum valve, charge valve, the annex such as pressure gauge and bolt forms, measurement apparatus, which can easily be filled with high purity fluid, includes carbon dioxide, sulfur hexafluoride, ethane, freon 13, freon 23, use pressure tight metal pipe, ferrule fitting connects Manual pressure generator and measurement apparatus.The advantages of present utility model application is the hidden danger for thoroughly being solved without using pressure gauge tester the equipment scrapping brought using gas leakage, oil leak and operational error caused by hydraulic oil, can determine the property of multiple fluid, easy to use.

Description

Manual pressure source can determine the experimental provision of multiple fluid pressure bulk temperature relation

Technical field

It is more particularly to a kind of to be used for a variety of streams the present invention relates to a kind of experimental provision for determining and observing for fluid properties Nexus nature measure and the experimental provision of critical phenomena observation, belong to experiment teaching instrument between body pressure, volume, temperature.

Background technology

The pressure of fluid（P）, volume（V）, temperature（T）Between property relation be fluid fundamental property, be calculate stream The basic data of body heat mechanical property, after there are these property datas, other heat of fluid can be calculated according to thermodynamic relation Mechanical property, these properties play a significant role in chemistry, chemical industry, refrigeration, heat energy utilization etc.；The physical data of fluid, The critical-temperature of such as fluid, critical pressure, critical size property are to determine the property such as material liquefaction, vaporization, design of pressure vessels The basic data of matter, need to determine the relation between the pressure of fluid, volume, temperature for this, observation understanding Study of Fluid faces Criticality matter, because these physical datas of fluid are the most basic property of fluid, thus the temperature of fluid, pressure, stereometry And critical data measure is taken seriously.

The measure of relation and critical phenomena observation are that many colleges and universities open up between the pressure of fluid, volume, temperature one Experimental project, Chinese patent CN202599882U disclose the composition of carbon dioxide critical point and p-v-T relation measurement experiment platforms, The measurement experiment platform mainly has experimental bench body, constant temperature circulating bath, constant temperature circulating water leg, piston-type pressure source, carbon dioxide Deng composition, but pressure gauge tester is used in equipment as pressure source, it is relatively low in temperature using castor oil as hydraulic fluid When, because castor-oil plant oil viscosity is excessive, when being pumped using piston, often there is air to leak into oil cylinder at piston seal, It is exactly hydraulic fluid cylinder, causes castor oil can not be pumped into oil cylinder, can not pressurize, experiment can not be carried out, at the same temperature, by castor Sesame oil is replaced by transformer oil, and transformer oil viscosity is smaller, is not in the phenomenon for leaking into air substantially, but applies elevated pressures When, transformer oil easily leaks at piston seal, therefore uses castor oil or transformer oil all existing defects；Except this it Outside, using it is more serious existing for pressure gauge tester as pressure source the problem of be：Pressure gauge tester has multiple valves, in reality When testing progress, the mistake that valve opens or closes often occurs, the intrinsic carbon dioxide of experimental bench is because pressure is high, pressure Lubricating cup pressure is normal pressure in table checker, and inside and outside differential pressure is big, causes the carbon dioxide in experiment body to be gone out from body, causes Equipment scrapping, because being filled with fluid into experimental provision body needs skill, only equipment manufacturer is asked to be filled with fluid again, Travel charge and cost of labor are very high, and pretty troublesome, and manufacturer is often also unwilling to be filled with fluid, when inside and outside differential pressure is slightly smaller When can damage pressure gauge, due to being such issues that misoperation causes often to occur, thus manufacturer be unwilling to produce it is this kind of Equipment, because it is difficult to distinguish responsibility, later maintenance cost is very high；Because pressure gauge tester oil cylinder volume is more than experimental bench body Oil, it is necessary to be repeatedly extracted into the oil cylinder of body, experiment effect by inner cylinder small volume using pressure gauge tester piston from lubricating cup Rate is low；Another drawback is more as the mercury usage amount for sealing liquid, and often an experimental provision needs a kg of water Silver, the hidden danger brought are self-evident.

The content of the invention

In view of the above-mentioned problems, inventor is that solve problem by following technical solution：

Manual pressure source can determine the experimental provision of multiple fluid pressure bulk temperature relation by Manual pressure generator and Measurement apparatus forms, and Manual pressure generator is by handwheel（1）, piston screw（2）, nut（3）, piston cylinder（4）, piston component （5）, hydraulic fluid cylinder（6）, the first joint (7) composition, wherein nut（3）With piston screw（2）Coordinate, pass through handwheel（1）Rotation Turn handwheel（1）Rotary motion be changed into piston screw（2）Linear motion, promote piston component（5）In piston cylinder（4）It is interior Motion, so as to change hydraulic fluid cylinder（6）Volume size and produce pressure change, piston screw（2）End is embedded in piston group Part（5）In, form gap and coordinate, the first joint（7）For connecting measurement apparatus, mercury is the working solution of Manual pressure generator Body, mercury are also sealing liquid simultaneously.

Piston component（5）Including spigot nut（8）, piston component main body（9）, piston one（10）, piston two（11）, piston Three（14）, piston seal（13）, clamp nut（12）.

Measurement apparatus is by constant temperature circulating water leg（20）, glass flange capillary（21）, constant temperature circulating water leg seal （22）, glass flange capillary flange gland（23）, sealing liquid container lid（24）, sealing liquid container（25）, glass method Blue compress gasket（26）, glass flange capillary flange gland fixing bolt（27）, seal one（28）, seal two（29）、 Second joint（30）, constant temperature circulating water leg fixed structure, vacuum valve, charge valve, pressure gauge and for connect vacuum valve, inflation Valve, pressure gauge and sealing liquid container lid（24）Attachment structure and the annex such as bolt composition.

In sealing liquid container lid（24）There is horizontal through hole side（241）, pass through horizontal through hole（241）By vacuum valve, Charge valve, pressure gauge are connected in measurement apparatus.

Measurement apparatus main body is by sealing liquid container lid（24）With sealing liquid container（25）Composition, measurement apparatus main body Internal upper and lower ends are middle cylindrical respectively in cone, in sealing liquid container（25）Upper placement seal two（29）, will Sealing liquid container lid（24）With sealing liquid container（25）Link together, placed on sealing liquid container lid (24) close Sealing one（28）With glass flange capillary（21）, in glass flange capillary（21）Glass flange compress gasket is placed on flange （26）, by glass flange capillary flange gland（23）With glass flange capillary（21）, seal one（28）After cooperation, glass Flange capillary flange gland fixing bolt（27）With through hole（232）Coordinate, by glass flange capillary flange gland（23）Gu Surely sealing liquid container lid is arrived（24）On, in glass flange capillary flange gland（23）Upper placement constant temperature circulating water leg is close Sealing（22）, by constant temperature circulating water leg（20）It is placed in constant temperature circulating water leg seal（22）Upper correspondence position, uses constant temperature Water leg fixed structure is circulated by constant temperature circulating water leg（20）Horizontal plane is axially perpendicular to fix.

Pass through the first joint（7）, the second joint（30）Using pressure tight metal pipe, ferrule fitting by Manual pressure generator and Measurement apparatus connects.

To reduce mercury usage amount, pressure tight metal bore is at 1~5 millimeter, and pressure tight metal thickness of pipe wall is at 1~3 millimeter.

Constant temperature circulating water leg fixed structure is by bolt（31）It is fixed on bolt hole（231）On, pass through thermostatical circulating water Four semi-circular grooves on chuck hold assembly（40）Cooperation, use eight on bolt and constant temperature circulating water leg hold assembly Individual horizontal through hole（41）Cooperation, by constant temperature circulating water leg（20）It is vertically fixed on glass flange capillary flange gland（23） On.

Constant temperature circulating water leg hold assembly in itself height and constant temperature circulating water leg（20）The ratio between height is 1: 8~1: 20, constant temperature circulating water leg hold assembly is arranged on bolt（31）Bottom, bolt（31）Height is at 6~10 centimetres.

The sealing liquid of measurement apparatus is mercury, and the fluid that measurement apparatus is filled with includes but is not limited to carbon dioxide, hexafluoro Change sulphur, ethane, freon 13, freon 23, fluid purity requires that molar percentage reaches 99.99%.

Manual pressure generator is along hydraulic fluid cylinder（6）Axially, measurement apparatus is along glass flange capillary（21）Axially hang down Directly installed in horizontal plane, the first joint of Manual pressure generator（7）, measurement apparatus the second joint（30）It is respectively positioned on bottom, Hydraulic fluid cylinder（6）Hydraulic fluid is less than horizontal through hole during volume maximum（241）.

Hydraulic fluid cylinder in Manual pressure generator（6）Working liquid volume can be discharged and be more than Manual pressure generator and survey Measure device connecting line volume and at least 10 milliliters of confined space volume sum in measurement apparatus.

Horizontal through hole（241）, its position correspondence is in sealing liquid container lid（24）Interior ramp area, hold from sealing liquid Device lid（24）Bottom calculates, and its horizontal center position is in sealing liquid container lid（24）To five points at 2/3rds of height Everywhere.

Charge valve, vacuum valve, the joint level of pressure gauge are higher than horizontal through hole（241）Horizontal center line.

Glass flange capillary（21）The ratio between flange outer diameter and capillary glass tube external diameter are 5: 1~8: 1.

Sealing liquid container lid（24）Conical centre's line, sealing liquid container（25）Conical centre's line and glass flange hair Tubule（21）Longitudinal center line is on same vertical line.

Second joint（30）Upper end and sealing liquid container（25）Taper minimum point connects.

Glass flange capillary flange gland fixing bolt（27）The preferably interior six point cylindrical head bolt of bolt.

Constant temperature circulating water leg（20）Delivery port is higher than at least 2 centimetres of glass flange capillary tip.

Hydraulic fluid cylinder（6）Surface roughness is not more than 0.10 μm.

The advantages of the present patent application is to replace pressure gauge tester using Manual pressure generator, and work is used as using mercury Liquid, thoroughly solves castor-oil plant oil viscosity gas leakage caused greatly under low temperature, the small easily oil leak experiment of transformer oil viscosity can not be carried out The problem of, fundamentally solve because, because pressure differential is excessive, operational error causes to flow in experiment body and pressure gauge tester Body is gone out out of experiment body, the hidden danger for causing experimental facilities to be scrapped, and without pumping repeatedly, conventional efficient is high, and reducing mercury makes Dosage, it is easy to use.

Brief description of the drawings

A kind of section of structure disclosed by the invention

Fig. 1, Manual pressure generator a kind of section of structure, 1 handwheel, 2 piston screws, 3 nuts, 4 piston cylinders, 5 live Plug assembly, 6 hydraulic fluid cylinders, 7 first joints.

A kind of piston component profile of Fig. 2, Manual pressure generator, 8 spigot nuts, 9 piston component main bodys, 10 pistons First, 11 pistons two, 14 pistons three, 13 piston seals, 12 clamp nuts.

Fig. 3, measurement apparatus a kind of profile, 20 constant temperature circulating water legs, 21 glass flange capillaries, 22 constant temperature circulatings Water leg seal, 23 glass flange capillary flange glands, 24 sealing liquid container lids, 25 sealing liquid containers, 26 glass Glass flange screw pad, 27 glass flange capillary flange gland fixing bolts, 28 seals one, 29 seals two, 30 second Joint, 201 thermowells, 202 constant temperature circulating water outs, 203 constant temperature circulating water inlets.

Fig. 4 constant temperature circulating water leg fixed structures, upper left side figure are the vertical views of glass flange capillary flange gland 23 Figure, 231 bolts hole, 232 through holes, lower left figure are the profiles that glass flange capillary flange gland 23 and bolt 31 coordinate, Upper right side figure is the top view of constant temperature circulating water leg hold assembly, and 40 semi-circular grooves, lower right is constant temperature circulating water leg folder Hold the front view of part, 41 horizontal through hole.

Fig. 5, the profile of sealing liquid container lid 24,241 horizontal through hole.

Embodiment

It is related in measurement apparatus to Manual pressure generator in the present patent application to further understand explanation patent application Content is further explained, and illustrates the implementation of the present invention.

Due to the fixation of fixed manual pressure generator and the support of measurement apparatus, Manual pressure generator and measurement apparatus Structure belongs to known, and as Manual pressure generator and measurement apparatus use hexagonal steel making, or use round steel bar or steel pipe are by hand Dynamic pressure forcer and measurement apparatus external process are into hexagon, or on Manual pressure generator and measurement apparatus surface soldered For part fixed and for installation, thus fixture structure and part are not drawn on the diagram.

Vacuum valve, charge valve, pressure gauge and connection vacuum valve, charge valve, pressure gauge and sealing liquid container lid（24） The attachment structure connected can have diversified forms, such as by pipe fitting and pipeline by vacuum valve, charge valve, pressure gauge and sealing Liquid container lid（24）Connect, metal bar or sheet material can also be used, and processed on metal bar or sheet material Corresponding connecting hole connects.

Assembled according to Fig. 3 according to order from top to bottom, first with stainless steel tube and ferrule fitting, pass through the first joint（7） With the second joint（30）Manual pressure generator and measurement apparatus are connected, the stainless steel tube internal diameter used is 2 millimeters, wall It is thick 2 millimeters, rotation hand wheel（1）Make hydraulic fluid cylinder（6）Volume is maximum, by sealing liquid container（25）It is fixed on support, from Sealing liquid container（25）Top adds about 480 grams of liquid mercury of sealing, and regulation Manual pressure generator is horizontal, excludes working solution Body cylinder（6）Interior air, mercury are full of hydraulic fluid cylinder（6）, by seal two（29）It is put into sealing liquid container（25）On, sealing Part two（29）From polytetrafluoroethylene gasket, by sealing liquid container lid（24）It is connected to sealing liquid container（25）On, Seal one is placed above sealing liquid container lid (24)（28）, seal one（28）Selection uses gasket seal, by glass Flange capillary（21）It is placed in glass flange capillary flange groove, in glass flange capillary（21）Compressed with glass flange Pad（26）Coordinate, use glass flange capillary flange gland fixing bolt（27）With through hole（232）Coordinate, by glass flange Capillary flange gland（23）It is fixed on sealing liquid container lid（24）On, by constant temperature circulating water leg（20）It is placed on constant temperature Circulate water leg seal（22）On, constant temperature circulating water leg seal（22）Material is rubber, can be pressed from both sides with thermostatical circulating water Cover lower end structure and glass flange capillary（21）Close fit.

Constant temperature circulating water leg（20）It is to be fixed using constant temperature circulating water leg clamping device, two bolts（31）With glass Glass flange capillary flange gland（23）On bolt hole（231）Coordinate, pass through half on constant temperature circulating water leg hold assembly Circular trough（40）, bolt（31）, horizontal through hole（41）By constant temperature circulating water leg（20）It is vertically fixed on glass flange capillary Flange gland（23）On, constant temperature circulating water leg hold assembly installation site is in constant temperature circulating water leg（20）Bottom, higher than perseverance Warm circulating water intake（203）10 millimeters.

Pass through horizontal through hole（241）, attachment structure vacuum valve, charge valve, pressure gauge are connected to sealing liquid container lid Son（24）On.

In constant temperature circulating water leg（20）Thermowell（201）Middle insertion thermometer, thermostatical circulating water is connected respectively It is connected to constant temperature circulating water out（202）With constant temperature circulating water inlet（203）On, the temperature of regulating thermostatic circulator bath to setting Value.

Vacuum valve and charge valve are closed, first with the sealing of the air analysis measurement apparatus of confined space in measurement apparatus Property, rotary manual pressure generator handwheel（1）, mercury is transported in sealing liquid container, slow compressed air reaches pressure To 6MPa, being kept for 1 to 2 minutes, pressure should remain unchanged, after pressure testing is qualified, rotary manual pressure generator handwheel（1）Make work Liquid cylinder（6）Volume is maximum, and vavuum pump is connected with surge flask, then surge flask is connected on the vacuum valve of measurement apparatus, beats Vacuum valve is driven, starts vavuum pump, is vacuumized at least 30 minutes, vacuum valve is closed, sulfur hexafluoride steel cylinder is connected to measurement apparatus Charge valve on, open charge valve, be filled with sulfur hexafluoride fluid to 0.1 MPa, close charge valve, be again turned on vacuum valve, then Vacuumize 10 minutes, close vacuum valve, then rotation hand wheel（1）Mercury is pressed into liquid sealing container, height reaches glass Minimum point in flange capillary, it is defined so that naked eyes are visible, starts to be filled with sulfur hexafluoride steam to pressure gauge reading and reach 0.4MPa, Charge valve is closed, Manual pressure generator is vertically fixed on support, it is desirable to hydraulic fluid cylinder（6）Working solution during volume maximum Body is less than horizontal through hole（241）, constant temperature circulating switch pump is opened, is first measured at room temperature, rotation hand wheel（1）Gradually add Pressure, the states such as superheated steam, saturated vapor, VLE, saturated liquid, compressed liquid are presented in sulfur hexafluoride successively, and record Measurement temperature, pressure, the data of fluid level.

Fluid volume is equal to glass flange capillary by fluid level and capillary inner diameter numerical value according to fluid volume（21） Sectional area calculates fluid volume, glass flange capillary with fluid level product（21）Internal diameter is obtained using gravimetric method, Pass through glass flange capillary under constant temperature（21）Highly, glass flange capillary（21）Mercury density under interior mercury weight, constant temperature Calculate, glass flange capillary（21）Internal diameter is 0.312 centimetre, can calculate glass flange capillary（21）Hair Tubule cross-sectional area is 0.0764 square centimeter, according to the constant temperature circulating water leg of experimental record（20）Vertical direction on side Scale value calculates fluid level, by fluid level and capillary inner diameter numerical value, according to fluid volume be equal to capillary sectional area and Fluid level product calculates fluid volume, from constant temperature circulating water leg（20）The thermometer record experimental temperature of insertion, from pressure Power meter reading records experimental pressure, can draw out the pv diagram under isothermal.

45.5 DEG C are increased the temperature to, the fuzzy critical phenomena in vapour-liquid line of demarcation can be observed.

When temperature is higher than 45.5 DEG C of the critical-temperature of sulfur hexafluoride, sulfur hexafluoride is in gas or Supercritical Conditions, Recordable temperature, pressure, fluid level data, and fluid volume is calculated, the pv diagram under isothermal can be drawn out.

When need to use than the data of volume or molal volume draw pv diagram when, can by the pressure of measuring, temperature, The volume data of fluid, the amount of the material of fluid is calculated according to data in literature, and then is obtained than volume or molal volume.

After experiment, pressure in measurement apparatus can be reduced to pressure gauge gauge pressure and be slightly above atmospheric pressure, waited for down Secondary experiment.

To save the classroom experiment time, the process that measurement apparatus vacuumized, filled sulfur hexafluoride steam can be by experimental technique people Member or teacher complete in advance.

By taking carbon dioxide pressure bulk temperature determination experiment as an example, the implementation of the present invention is further illustrated.First with The sealing of air analysis device in measurement apparatus confined space, it is ensured that vacuum valve and charge valve are to close, and slowly rotate hand Wheel（1）, compressed air makes pressure reach 10MPa, kept for 1 to 2 minutes, and pressure should remain unchanged, after device inspection of hermetic seal is qualified, Rotation hand wheel（1）, make hydraulic fluid cylinder（6）Volume is maximum, vavuum pump is connected on surge flask, then surge flask is connected into survey On the vacuum valve for measuring device, vacuum valve is opened, vavuum pump is started, vacuumizes at least 20 minutes, close vacuum valve；By carbon dioxide Steel cylinder is connected on the charge valve of measurement apparatus, is opened charge valve, is filled with carbon dioxide-vapor and is filled to slightly above atmospheric pressure, closing Air valve, vacuum valve is opened, then vacuumized 10 minutes, close vacuum valve, then rotation hand wheel（1）, mercury is increased to glass method Blue capillary（21）Capillary lower end, by naked eyes it is visible be defined, then open charge valve, be filled with carbon dioxide-vapor and arrive 0.4MPa, charge valve is closed, open constant temperature circulating taps, first measure at room temperature, rotation hand wheel（1）Gradually pressurization, The states such as superheated steam, saturated vapor, VLE, saturated liquid, compressed liquid, record measure temperature is presented in carbon dioxide successively Degree, pressure, the data of fluid level, fluid level are by constant temperature circulating water leg（20）Scale in the vertical direction of side is shown , draw out the pv diagram under isothermal.

The method more than one of critical phenomena is observed, such as at room temperature, allows carbon dioxide to be in VLE state or full And liquid condition, thermostatical circulating water bath temperature is set as 35 DEG C, it is observed that carbon dioxide vapour-liquid point in temperature-rise period The phenomenon that interface disappears.

For warming temperature to 40 DEG C, gas or Supercritical Conditions are presented in carbon dioxide, and record pressure, temperature, fluid are high The data such as degree, calculate fluid volume, draw out the pv diagram under isothermal.

The vacuum pump flow rate used in experiment is 1 Liter Per Minute, and absolute pressure reaches -0.09MPa.

The experimental provision body announced using CN202599882U, occur still using pressure gauge tester as pressure Device, in addition to it need not vacuumize, fill fluid, the common essentially identical but original experimental provision of remaining operating procedure is because pressure gauge The oil pressure chamber vol of the oil cylinder Capacity Ratio experimental bench body of checker is much smaller, it is necessary to repeatedly pumped in lubricating cup, then to experiment It is oil-filled in playscript with stage directions body, pressure reading could be shown on pressure gauge.Pressure gauge tester oil pumping, oil-filled operating process are very heavy Will because operation go wrong do not add not only pressure can also destructive test equipment, its step is as follows：1. closing presure table and enter Enter two valves of body oil circuit, the inlet valve of the lubricating cup on Opening pressure table checker.Moved back 2. shaking on pressure gauge tester Piston screw, until screw rod all exits, at this moment oil is filled in pressure platform oil cylinder.3. first closing lubricating cup valve, it is then turned on Pressure gauge and two valves for entering body oil circuit.4. shake into piston screw, it is oil-filled to device body, so repeatedly, until pressure Untill having pressure reading on power table, when secondary oil-filled, it is necessary to the pressure reached when remembeing oil-filled for the first time first, wait secondary oil-filled When pressure reaches pressure oil-filled for the first time, the valve of body oil circuit could be opened, in order to avoid damage equipment.In whole experiment process Pressure is no more than 6.0MPa.5. checking again for whether lubricating cup valve shuts, whether pressure gauge and body oil circuit valve are opened, if Stablize, you can experiment.Remaining step is same as Example 1, but operating procedure is more, the chance of valve opening and closing occurs It is more, easily cause carbon dioxide to go out experimental bench body, experimental facilities is easily damaged, when another problem is that temperature is low, even if Temperature also often occurs because castor-oil plant oil viscosity is big at 15 DEG C, air inlet in pressure gauge tester piston, takes out and do not oil, Often having causes the situation of the failure of an experiment to occur.

Once open or close the valve operation error on pressure gauge tester, experimental provision body and pressure gauge tester Pressure differential is larger, can go out fluid in measurement body, cause equipment scrapping.

Sealing liquid container lid（24）With sealing liquid container（25）Between connected mode have it is a variety of, such as threaded connection, weldering Connect, threaded connection also there are diversified forms, such as directly in sealing liquid container lid（24）Lower inner surface processes internal thread, In sealing liquid container（25）Top processes external threads, can also be in sealing liquid container lid（24）Lower external face with it is close Seal liquid container（25）Outer surface of upper processes screw thread, by a double internal thread straight couplings by sealing liquid container lid（24） With sealing liquid container（25）Connect.

According to sealing liquid container lid（24）With sealing liquid container（25）Between type of attachment it is different, seal form has more Kind, such as packing seal, seal seal.

Seal species is a lot, and such as the O-ring seals that cross sectional shape is O shapes, section is the profiled seals such as trapezoidal, rectangle Part, also gasket seal etc., its material preferably ageing-resistant, high temperature resistant, the material of chemical-resistant reagent, such as nitrile rubber, butyl Rubber, neoprene, butadiene-styrene rubber, fluorubber, silicon rubber, polyurethane rubber, chlorosulfonated polyethylene, polysulfide rubber, modified rubber Glue, compounded rubber Polymer material.

Seal also can by different materials coat form, seal coated including two or more material to be formed it is close Sealing.

Rubber hardness is not less than 75 degree of shore hardness when using rubber seal, and hardness is too small, does not have sealing function, When hardness is excessive, glass flange capillary may be damaged.

O shape rubber seal is conventional seal, and shape differs, and when reasonable in design, can realize seal request, when During using odd-shaped cross section rubber seal, for placing seal channel section shape and the odd-shaped cross section rubber of special-shaped rubber seal Glue seal cross sectional shape is identical.

Sealing member material can also select the materials such as polytetrafluoroethylene (PTFE), graphite.

To strengthen sealing effectiveness, the quantity of sealing ring can be increased, formed multi-sealed.

The type of attachment of vacuum valve, charge valve, pressure gauge on sealing liquid container lid has a variety of, can be connected to liquid Body sealing container lid（24）, such as in horizontal through hole（241）It is upper to pass through joint, pressure tight metal pipe, by vacuum valve, charge valve, pressure Power table is connected in measurement apparatus, can also be connected vacuum valve, charge valve, pressure gauge by the metal derby of a processing connecting hole Pick up and.

The above described is only a preferred embodiment of the present invention, being not the limitation for making other forms to the present invention, appoint What those skilled in the art changed or be modified as possibly also with the technology contents of the disclosure above equivalent variations etc. Imitate embodiment.But it is every without departing from technical solution of the present invention content, the technical spirit according to the present invention is to above example institute Any simple modification, equivalent variations and the remodeling made, still fall within the protection domain of technical solution of the present invention.

Claims (8)

1. Manual pressure source can determine the experimental provision of multiple fluid pressure bulk temperature relation, by Manual pressure generator and survey Measure device composition, it is characterised in that：Manual pressure generator is by handwheel（1）, piston screw（2）, nut（3）, piston cylinder（4）、 Piston component（5）, hydraulic fluid cylinder（6）, the first joint (7) composition, piston component（5）Including spigot nut（8）, piston component Main body（9）, piston one（10）, piston two（11）, piston three（14）, piston seal（13）, clamp nut（12）, mercury is hand The hydraulic fluid of dynamic pressure forcer, measurement apparatus is by constant temperature circulating water leg（20）, glass flange capillary（21）, constant temperature follows Ring water leg seal（22）, glass flange capillary flange gland（23）, sealing liquid container lid（24）, sealing liquid hold Device（25）, glass flange compress gasket（26）, glass flange capillary flange gland fixing bolt（27）, seal one（28）、 Seal two（29）, the second joint（30）, constant temperature circulating water leg fixed structure, vacuum valve, charge valve, pressure gauge and for even Connect vacuum valve, charge valve, pressure gauge and sealing liquid container（25）Attachment structure and bolt composition, in sealing liquid container lid Son（24）There is horizontal through hole side（241）, pass through horizontal through hole（241）Vacuum valve, charge valve, pressure gauge are connected to measurement dress Put, measurement apparatus body interior upper and lower ends are respectively in cone, and middle cylindrical, the sealing liquid of measurement apparatus is water Silver, the fluid that measurement apparatus is filled with include but is not limited to carbon dioxide, sulfur hexafluoride, ethane, freon 13, freon 23, stream Body purity requirement molar percentage reaches 99.99%；Constant temperature circulating water leg fixed structure is by bolt（31）It is fixed on bolt hole （231）On, pass through four semi-circular grooves on constant temperature circulating water leg hold assembly（40）Cooperation, followed using bolt and constant temperature Eight horizontal through hole on ring water leg hold assembly（41）Cooperation, by constant temperature circulating water leg（20）It is vertically fixed on glass Flange capillary flange gland（23）On, pass through the first joint（7）, the second joint（30）Use pressure tight metal pipe, ferrule fitting Manual pressure generator and measurement apparatus are connected.

2. Manual pressure source according to claim 1 can determine the experimental provision of multiple fluid pressure bulk temperature relation, It is characterized in that：Constant temperature circulating water leg hold assembly in itself height and constant temperature circulating water leg（20）The ratio between height is 1: 8~1 : 20, constant temperature circulating water leg hold assembly is arranged on bolt（31）Bottom, bolt（31）Height is at 6~10 centimetres.

3. Manual pressure source according to claim 1 can determine the experimental provision of multiple fluid pressure bulk temperature relation, It is characterized in that：Measurement apparatus is along glass flange capillary（21）Horizontal plane installation is axially perpendicular to, Manual pressure generator First joint（7）, measurement apparatus the second joint（30）It is respectively positioned on bottom, hydraulic fluid cylinder（6）Hydraulic fluid during volume maximum Less than horizontal through hole（241）.

4. Manual pressure source according to claim 1 can determine the experimental provision of multiple fluid pressure bulk temperature relation, It is characterized in that：Hydraulic fluid cylinder（6）Working liquid volume can be discharged and be more than Manual pressure generator and measurement apparatus connecting tube Road volume and at least 10 milliliters of confined space volume sum in measurement apparatus.

5. Manual pressure source according to claim 1 can determine the experimental provision of multiple fluid pressure bulk temperature relation, It is characterized in that：Horizontal through hole（241）, its position correspondence is in sealing liquid container lid（24）Interior ramp area, from sealing fluid Body container lid（24）Bottom calculates, and its horizontal center position is in sealing liquid container lid（24）Arrived at 2/3rds of height Five/everywhere, charge valve, vacuum valve, the joint level of pressure gauge are higher than horizontal through hole（241）Horizontal center line.

6. Manual pressure source according to claim 1 can determine the experimental provision of multiple fluid pressure bulk temperature relation, It is characterized in that：Glass flange capillary（21）The ratio between flange outer diameter and capillary glass tube external diameter are 5: 1~8: 1.

7. Manual pressure source according to claim 1 can determine the experimental provision of multiple fluid pressure bulk temperature relation, It is characterized in that：Sealing liquid container lid（24）Conical centre's line, sealing liquid container（25）Conical centre's line and glass method Blue capillary（21）Longitudinal center line is on same vertical line.

8. Manual pressure source according to claim 1 can determine the experimental provision of multiple fluid pressure bulk temperature relation, It is characterized in that：Glass flange capillary flange gland fixing bolt（27）It is interior six point cylindrical head bolt.