CN206819622U - Piston-type pressure source determines the experimental provision of multiple fluid pressure bulk temperature relation - Google Patents

Abstract

The experimental provision of piston-type pressure source measure multiple fluid pressure bulk temperature relation is made up of piston-type pressure source and measure device, mercury is used as hydraulic fluid and sealing liquid, device is determined by glass flange capillary, sealing liquid container lid, sealing liquid container, constant temperature circulating water leg, seal, joint, vacuum valve, charge valve, pressure gauge, pad, bolt and annex etc. form, it is in cone respectively to determine upper and lower ends in apparatus main body, it is middle cylindrical, carbon dioxide can be conveniently filled with measure device, a variety of high purity fluids such as sulfur hexafluoride, use pressure tight metal pipe, ferrule fitting connects piston-type pressure source and measure device.Its advantage is not have to pressure gauge tester, mercury thoroughly solves the problems, such as to bring using castor oil and transformer oil, eliminating valve switch operational error causes the hidden danger that experimental facilities is scrapped as hydraulic fluid and sealing liquid, conventional efficient is high, can be conveniently used for multiple fluid property measure.

Description

Piston-type pressure source determines the experimental provision of multiple fluid pressure bulk temperature relation

Technical field

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

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, the critical-temperature of the physical data of fluid, such as fluid, critical pressure, critical size Matter is to determine the basic data of material liquefaction, vaporization, design of pressure vessels etc., needs to determine the pressure of fluid, volume, temperature for this Relation between degree, recognize the critical properties of Study of Fluid, because these physical datas of fluid are the most basic property of fluid, Thus the pressure of fluid, volume, temperature measuring and critical data measure are taken seriously, after having these properties, according to thermodynamics Relation can calculate other macroscopic properties of fluid, and these properties are in chemistry, chemical industry, refrigeration, gas liquefaction, heat energy utilization etc. Aspect plays a significant role.

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 typically to use castor oil or transformer as pressure source, pressure gauge tester in equipment Oil be used as hydraulic fluid, the hydraulic oil described in hydraulic fluid i.e. CN202599882U, when temperature is relatively low, due to castor-oil plant Oil viscosity is excessive, when being pumped using piston, often has air to leak into oil cylinder, that is, hydraulic fluid at piston seal Cylinder, cause castor oil can not be pumped into oil cylinder, can not pressurize naturally, experiment can not be carried out, and at the same temperature, castor oil is changed For transformer oil, transformer oil viscosity is smaller, is not in the phenomenon for leaking into air, but during application elevated pressures, transformer oil Easily leaked at piston seal, therefore use castor oil or transformer oil all existing defects；In addition, using pressure gauge Checker is as more serious problems are existing for pressure source：Pressure gauge tester has multiple valves, when testing progress, often There is the mistake that valve opens or closes, the intrinsic carbon dioxide of experimental bench is because pressure is high, lubricating cup in pressure gauge tester Pressure is normal pressure, and inside and outside differential pressure is big, causes the carbon dioxide in experiment body to be gone out from body, causes equipment scrapping, is being needed When repeatedly pumping, it is easier to valve occur and open or close operating mistake, it is easier to the situation of device damage occur.Because to Carbon dioxide is filled with experimental provision body needs skill, only asks equipment manufacturer to be filled with carbon dioxide, travel charge again And cost of labor is very high, and it is pretty troublesome, and manufacturer is often also unwilling to be filled with carbon dioxide；When inside and outside differential pressure is slightly smaller Pressure gauge can be damaged, due to being misoperation or error and such issues that occur, thus manufacturer is unwilling to produce this kind of set Standby, because it is difficult to distinguish responsibility, later maintenance cost is very high；Because pressure gauge tester oil cylinder volume is more than in experimental bench body Oil, it is necessary to be repeatedly extracted into the oil cylinder of body, experiment by oil cylinder small volume using the piston on pressure gauge tester from lubricating cup Efficiency is low, in addition the shortcomings that be that experimental facilities can only measure a kind of property of fluid.

The content of the invention

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

The experimental provision of piston-type pressure source measure multiple fluid pressure bulk temperature relation is by piston-type pressure source and survey Determine device composition, piston-type pressure source is by handwheel（1）, piston screw（2）, nut（3）, piston cylinder（4）, piston component（5）, work Make liquid cylinder（6）, the first joint (7) composition, wherein nut（3）With piston screw（2）Coordinate, pass through handwheel（1）Rotate hand Wheel（1）Rotary motion be changed into piston screw（2）Linear motion, promote piston component（5）In piston cylinder（4）Interior motion, So as to change hydraulic fluid cylinder（6）Volume size and produce pressure change, piston screw（2）End is embedded in piston component（5） In, form gap and coordinate, the first joint（7）Device is determined for connecting, mercury is the hydraulic fluid in piston-type pressure source, mercury It is 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）.

Device is determined by constant temperature circulating water leg（20）, glass flange capillary（21）, constant temperature circulating water leg gland （22）, glass flange capillary flange gland（23）, sealing liquid container lid（24）, sealing liquid container（25）, constant temperature follows Ring water leg packing washer（26）, constant temperature circulating water leg seal（27）, glass flange capillary flange gland bolt（28）、 Glass flange capillary flange compress gasket（29）, glass flange capillary flange seal（30）, sealing liquid container pad （31）, the second joint（32）, vacuum valve, charge valve, pressure gauge, for connect vacuum valve, charge 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）Vacuum valve, charge valve, pressure gauge are connected on measure device.

Apparatus main body is determined by sealing liquid container lid（24）With sealing liquid container（25）Composition, determine apparatus main body Interior upper and lower ends are respectively in cone, middle cylindrical, sealing liquid container lid（24）With sealing liquid container（25）Even It is connected together, sealing liquid container pad is placed in centre（31）, sealing liquid container lid（24）On circular glass flange it is close Glass flange capillary flange seal is placed in sealing groove（30）, by glass flange capillary（21）With glass flange capillary Flange screw pad（29）, glass flange capillary flange gland（23）Coordinate, pass through glass flange capillary flange gland spiral shell Bolt（28）With through hole（232）Coordinate, by glass flange capillary（21）It is perpendicularly fixed at sealing liquid container lid（24）On, Constant temperature circulating water leg（20）Flanging places constant temperature circulating water leg packing washer in both sides respectively up and down（26）And constant temperature circulating Water leg seal（27）, using bolt by constant temperature circulating water leg gland component（222）Pass through through hole（221）, bolt hole （231）It is fixed on glass flange capillary flange gland（23）On.

Pass through the first joint（7）, the second joint（32）Using pressure tight metal pipe, ferrule fitting by piston-type pressure source and survey Determine device to connect.To reduce mercury usage amount, pressure tight metal bore is at 1~5 millimeter, and pressure tight metal thickness of pipe wall is 1~3 Millimeter.

The sealing liquid for determining device is mercury, determines the fluid being filled with device and includes but is not limited to carbon dioxide, six Sulfur fluoride, ethane, freon 13, freon 23, determine the fluid being filled with device, and purity requirement molar percentage reaches 99.99%。

Piston-type pressure source is along hydraulic fluid cylinder（6）Axially, device is determined along glass flange capillary（21）It is axially vertical Installed in horizontal plane, the first joint（7）, the second joint（32）It is respectively positioned on bottom, hydraulic fluid cylinder in piston-type pressure source（6）Body When product is maximum, hydraulic fluid is highly less than horizontal through hole（241）.

Hydraulic fluid cylinder in piston-type pressure source（6）Working liquid volume can be discharged to fill more than piston-type pressure source and measure Put connecting line volume and at least 10 milliliters of confined space volume sum in measure device.

Horizontal through hole（241）, its position correspondence is in sealing liquid container lid（24）Interior tapered area.

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.

Glass flange capillary flange gland bolt（28）It is preferred that interior six point cylindrical head bolt.

Constant temperature circulating water out (201) is higher than at least 10 millimeters of glass flange capillary tip.

Its advantage is to replace pressure gauge tester using piston-type pressure source, and hydraulic fluid and sealing fluid are used as using mercury Body, thoroughly solve to leak into air, the small oil leak of transformer oil viscosity caused by castor-oil plant oil viscosity is big, the problem of can not be tested, Fundamentally solve because, because pressure differential is excessive, operational error causes fluid from experiment in experiment body and pressure gauge tester Gone out in body, the hidden danger for causing experimental facilities to be scrapped, without pumping repeatedly, conventional efficient is high, can be used for multiple fluid property Measure, it is easy to use.

Brief description of the drawings

Fig. 1, a kind of section of structure in piston-type pressure source, 1 handwheel, 2 piston screws, 3 nuts, 4 piston cylinders, 5 pistons Component, 6 hydraulic fluid cylinders, 7 first joints.

Fig. 2, a kind of piston component profile in piston-type pressure source, 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, a kind of profile for determining device, 20 constant temperature circulating water legs, 21 glass flange capillaries, 22 constant temperature circulatings Water leg gland, 23 glass flange capillary flange glands, 24 sealing liquid container lids, 25 sealing liquid containers, 26 constant temperature Circulate water leg packing washer, 27 constant temperature circulating water leg seals, 28 glass flange capillary flange gland bolts, 29 glass Flange capillary flange compress gasket, 30 glass flange capillary flange seals, 31 sealing liquid container pads, 32 second connect Head, 201 constant temperature circulating water outs, 202 thermowells, 203 constant temperature circulating water inlets.

Fig. 4, the profile of sealing liquid container lid 24,241 horizontal through hole.

Fig. 5, upper figure are the top views of glass flange capillary flange gland 23,231 bolts hole, 232 through holes；Figure below is permanent Temperature circulation water leg gland top view, 221 through holes, 222 constant temperature circulating water leg gland components.

Embodiment

To further understand explanation patent application, to phase in piston-type pressure source in the present patent application and measure device inside the Pass Appearance is further explained, and illustrates the implementation of the present invention.

Due to the support of fixed piston formula pressure source and measure device, piston-type pressure source and the fixed structure for determining device Belong to general knowledge, such as piston-type pressure source and measure device use hexagonal steel making, or use round steel bar or steel pipe are by piston type pressure Power source and measure device external process into hexagon, or be used on piston-type pressure source and measure apparatus surface welding it is fixed and For the part of installation, thus fixture structure and part are not drawn on the diagram, and the fixing step of device is in implementing to illustrate Omit.

Assembled according to Fig. 3 according to order from top to bottom, first with copper pipe and ferrule fitting, by the on piston-type pressure source One joint（7）With the second joint（32）Connect, the internal diameter of copper pipe used is 6 millimeters, 2 millimeters of copper pipe wall thickness, rotation hand wheel （1）Make hydraulic fluid cylinder（6）Volume is maximum, by sealing liquid container（25）It is vertically fixed on support, from sealing liquid container （25）Top adds about 500 grams of liquid mercury of sealing, and regulating piston formula pressure source is horizontal, excludes hydraulic fluid cylinder（6）Interior air, Mercury is full of hydraulic fluid cylinder（6）, by sealing liquid container pad（31）It is put into sealing liquid container（25）On, sealing liquid holds Device pad（31）From teflon gasket, connection sealing liquid container lid (24) and sealing liquid container (25) will be close Sealing liquid body container lid（24）On circular glass flange seal part groove in place glass flange capillary flange seal（30）, Glass flange capillary seal（30）Selection uses pad, by glass flange capillary（21）With glass flange capillary flange Compress gasket（29）, glass flange capillary flange gland（23）After working good, pass through glass flange capillary flange gland spiral shell Bolt（28）With through hole（232）Coordinate, by glass flange capillary（21）It is fixed on sealing liquid container lid（24）On, in constant temperature Circulate water leg（20）The flanging of bottom places constant temperature circulating water leg packing washer in both sides respectively up and down（26）Followed with constant temperature Ring water leg seal（27）, constant temperature circulating water leg seal（27）Selection uses O-ring, then using bolt by two perseverances Temperature circulation water leg gland component（222）Pass through through hole（221）It is fixed on bolt hole（231）On, constant temperature circulating is fixed with this Water leg gland（22）, constant temperature circulating water leg gland（22）It is by two symmetrical semicircle constant temperature circulating water leg gland portions Part（222）Composition.

In view of the definition of drawing, glass flange capillary flange gland bolt（28）The shape of profile is not plotted Formula.

Pass through horizontal through hole（241）Vacuum valve, charge valve, pressure gauge are connected to sealing liquid container lid（24）On, In thermowell（202）Middle insertion thermometer, thermostatical circulating water is connected respectively to constant temperature circulating water inlet（203）And constant temperature Circulating water outlet（201）On, the temperature of regulating thermostatic circulator bath to setting value.

First with the sealing of the air analysis device in measure device confined space, vacuum valve and charge valve are closed, is delayed Slow rotary-piston type pressure source handwheel（1）, hydraulic fluid cylinder（6）Volume is reduced, and mercury is transported in sealing liquid container, is pressed Contracting air makes pressure reach 5.5MPa, is kept for 1 to 2 minutes, and pressure should remain unchanged, and after device inspection of hermetic seal is qualified, rotates hand Wheel（1）, make hydraulic fluid cylinder（6）Volume is maximum, and vavuum pump is connected on surge flask, and surge flask is connected into measure device On vacuum valve, vacuum valve is opened, starts vavuum pump, vacuumizes at least 20 minutes, closes vacuum valve；Sulfur hexafluoride steel cylinder is connected Onto the charge valve of measure device, charge valve is opened, is filled with sulfur hexafluoride steam to slightly above atmospheric pressure, closing charge valve, then Secondary opening vacuum valve, then vacuumize 10 minutes, vacuum valve is again switched off, then opens charge valve, sulfur hexafluoride steam is filled with and arrives 0.3MPa, charge valve is closed, open constant temperature circulating taps, first measure at room temperature, rotation hand wheel（1）Gradually pressurization, Occur sulfur hexafluoride successively and the states such as superheated steam, saturated vapor, VLE, saturated liquid, compressed liquid are presented, record is surveyed Constant temperature degree, pressure, the data of fluid level, fluid level are by constant temperature circulating water leg（20）The scale of vertical direction on side Display.

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）On scale value calculate stream Body height, by fluid level and capillary inner diameter numerical value, is equal to glass flange capillary sectional area and fluid according to fluid volume Height product calculates fluid volume, from constant temperature circulating water leg（20）The thermometer record experimental temperature of insertion, from pressure gauge Read-record experimental pressure, the pv diagram under isothermal can be drawn out.

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

When experimental temperature is higher than 45.5 DEG C of the critical-temperature of sulfur hexafluoride, sulfur hexafluoride is in gas or supercritical fluid, The numerical value such as temperature, pressure, fluid level are recorded, fluid level can be calculated, draw the pv diagram under isothermal.

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, measure device fluid pressure can be reduced to slightly above atmospheric pressure, wait for next experiment.

To save the student experimenting time, the process that measure device vacuumized, be filled with sulfur hexafluoride fluid can be by experimental technique Personnel 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 Determine the sealing of the air analysis device in device in confined space, it is ensured that vacuum valve and charge valve are to close, slowly rotation Rotating piston pressure source handwheel（1）, hydraulic fluid cylinder（6）Volume is reduced, and mercury is transported in sealing liquid container, and compression is empty Gas makes pressure reach 10MPa, is 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 maximum, vavuum pump is connected on surge flask, then the vacuum valve of surge flask and measure device is connected Connect, open vacuum valve, start vavuum pump, vacuumize at least 20 minutes, close vacuum valve；Carbon dioxide steel cylinder is connected to measure On the charge valve of device, charge valve is opened, carbon dioxide-vapor is filled with to slightly above atmospheric pressure, closes charge valve, open vacuum Valve, then vacuumize 10 minutes, vacuum valve is closed, then rotary-piston type pressure source handwheel（1）, mercury is increased to glass flange 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 0.7MPa, charge valve is closed, open constant temperature circulating taps, first measure at room temperature, rotation hand wheel（1）Gradually pressurization, Can occur carbon dioxide successively and the states such as superheated steam, saturated vapor, VLE, saturated liquid, compressed liquid, record is presented Measurement temperature, pressure, the data of fluid level, fluid level are by constant temperature circulating water leg（20）On scale show.Its Remaining step is identical with sulfur hexafluoride property determination experiment method.

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, such as sealing gasket, sealing ring, as the O-ring seals that cross sectional shape is O shapes, its material are excellent Ageing-resistant, high temperature resistant, the material of chemical-resistant reagent are selected, such as nitrile rubber, butyl rubber, neoprene, butadiene-styrene rubber, fluorine rubber Glue, silicon rubber, polyurethane rubber, chlorosulfonated polyethylene, polysulfide rubber, modified rubber, compounded rubber Polymer material, it is described Sealing member material includes but is not limited to above-mentioned material.

Seal can also be coated by different materials and formed, and described seal includes two or more material cladding shape Into seal.

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 has a variety of, and it is close can be connected to liquid Seal 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 gauge It is connected on measure device, can also be connected vacuum valve, charge valve, pressure gauge by the metal derby of a processing connecting hole Come.

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 (7)

1. piston-type pressure source determines the experimental provision of multiple fluid pressure bulk temperature relation, by piston-type pressure source and measure Device forms, it is characterised in that：Piston-type pressure source is by handwheel（1）, piston screw（2）, nut（3）, piston cylinder（4）, piston Component（5）, hydraulic fluid cylinder（6）, the first joint（7）, spigot nut（8）, piston component main body（9）, piston one（10）, piston Two（11）, piston three（14）, piston seal（13）, clamp nut（12）Composition, mercury is the working solution in piston-type pressure source Body；Device is determined by constant temperature circulating water leg（20）, glass flange capillary（21）, constant temperature circulating water leg gland（22）, glass Glass flange capillary flange gland（23）, sealing liquid container lid（24）, sealing liquid container（25）, constant temperature circulating water leg Packing washer（26）, constant temperature circulating water leg seal（27）, glass flange capillary flange gland bolt（28）, glass flange Capillary flange compress gasket（29）, glass flange capillary flange seal（30）, sealing liquid container pad（31）, second Joint（32）, vacuum valve, charge valve, pressure gauge, for connecting vacuum valve, charge valve, pressure gauge and sealing liquid container lid （24）Attachment structure and bolt composition, in sealing liquid container lid（24）There is horizontal through hole side（241）, it is logical by level Hole（241）Vacuum valve, charge valve, pressure gauge are connected on measure device, it is in circle respectively to determine upper and lower ends in apparatus main body Taper, middle cylindrical, the sealing liquid for determining device is mercury, determines the fluid being filled with device and includes but is not limited to two Carbonoxide, sulfur hexafluoride, ethane, freon 13, freon 23, determine the purity requirement molar percentage that fluid is filled with device Reach 99.99%, pass through the first joint（7）, the second joint（32）Using pressure tight metal pipe, ferrule fitting by piston-type pressure source Connected with measure device.

2. the experimental provision of measure multiple fluid pressure bulk temperature relation in piston-type pressure source according to claim 1, It is characterized in that：Device is determined along glass flange capillary（21）It is axially perpendicular to horizontal plane installation, hydraulic fluid cylinder（6）Volume When maximum, hydraulic fluid is highly less than horizontal through hole（241）.

3. the experimental provision of measure multiple fluid pressure bulk temperature relation in piston-type pressure source according to claim 1, It is characterized in that：Hydraulic fluid cylinder（6）Working liquid volume can be discharged more than piston-type pressure source and measure device connecting line Volume and at least 10 milliliters of confined space volume sum in measure device.

4. the experimental provision of measure multiple fluid pressure bulk temperature relation in piston-type pressure source according to claim 1, It is characterized in that：Horizontal through hole（241）, its position correspondence is in sealing liquid container lid（24）Interior tapered area.

5. the experimental provision of measure multiple fluid pressure bulk temperature relation in piston-type pressure source according to claim 1, 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.

6. the experimental provision of measure multiple fluid pressure bulk temperature relation in piston-type pressure source according to claim 1, 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.

7. the experimental provision of measure multiple fluid pressure bulk temperature relation in piston-type pressure source according to claim 1, It is characterized in that：Glass flange capillary flange gland bolt（28）It is interior six point cylindrical head bolt.