CN201476922U

CN201476922U - Safety industrial pressure gauge

Info

Publication number: CN201476922U
Application number: CN2009201627715U
Authority: CN
Inventors: 张舜先
Original assignee: ZHANG SHUNXI AN; ZHANG SHUNXI'AN
Current assignee: ZHANG SHUNXI AN; ZHANG SHUNXI'AN
Priority date: 2009-07-25
Filing date: 2009-07-25
Publication date: 2010-05-19
Anticipated expiration: 2019-07-25

Abstract

The utility model discloses a safety industrial pressure gauge. The safety industrial pressure gauge comprises a pressure guide system assembled in a gauge head, a transmitting mechanism and an indication device, wherein a liquid storage cavity is formed in an instrument base; the liquid storage cavity is divided by an elastic membrane into an isolation chamber and a liquid guide chamber; the isolation chamber is divided by a partitioner into a main room and a volume-variable room between the elastic membrane and the partitioner; the volume-variable room is communicated with the main cavity through via-holes evenly distributed at the center of the partitioner; the main cavity is communicated with the pressure guide system in the gauge head through an upper liquid outlet at the upper part of the main cavity; the isolation chamber and the pressure guide system are filled with isolation liquids; and the liquid guide chamber is communicated with an oil pipe through a liquid inlet at the lower end of the liquid guide chamber. The safety industrial pressure gauge has the advantages of reasonable and simple structure, low manufacture cost, and easy manufacture and installation, and can effectively prevent harmful and toxic liquid or gas from escaping from the gauge head so as to obviate the influences of the harmful and toxic liquid or gas on the health of inspectors.

Description

Safety-type industry tensimeter

Technical field

The utility model belongs to the improvement of industrial tensimeter structure, particularly the industrial tensimeter of multifunctional safe type.

Background technology

Tensimeter is the pressure that is used for measuring with real gas or liquid, widely use at production industries such as medicine, chemical industry, generally all be installed on (container or) pipeline, in order to check the pressure of gas in (container or) pipeline or liquid, tensimeter of the prior art mainly is made of watch glasses shell, dial plate, bourdon tube, meter connector, but the existing industrial tensimeter of many diaphragm types, its structure is comparatively complicated, manufacturing cost is higher, also is difficult for processing and installation.

The utility model content

The purpose of this utility model is to provide a kind of safety-type industrial tensimeter, it is simple and reasonable for structure, can effectively stop testing medium when bourdon tube or soldering opening etc. take place to leak, testing medium can not leaked from the place that generations such as bourdon tube or soldering opening are leaked, and, manufacturing cost is lower, is easy to processing and installation.

The purpose of this utility model is achieved in that the industrial tensimeter of a kind of safety-type, comprise and cooperate the pressure guiding system that is installed in the gauge outfit, gear train and indicating device, liquid storage cylinder is being set in the meter base, be separated into insulated chamber and drain chamber by flexible sheet in the liquid storage cylinder, be separated into main chamber and the long-pending chamber of the transfiguration between flexible sheet and next door again by the next door in the insulated chamber, the long-pending chamber of transfiguration is communicated with main chamber by the uniform through hole of offering on the central part of next door, main chamber is communicated with cooperating by the pressure guiding system that is provided with in its top liquid outlet and the gauge outfit, spacer pad abrim in insulated chamber and the pressure guiding system; The drain chamber is being provided with inlet by its lower end and is being communicated with the oil pipe cooperation.

Principle of work of the present utility model is identical with existing diaphragm type manometer, difference is that the testing medium in the oil pipe enters the drain chamber, the pressure of testing medium is applied on the flexible sheet, meanwhile, flexible sheet takes place to the elastic deformation of the inboard generation of insulated chamber concave shaped, the pressure that drain is indoor by the flexible sheet transfer function be positioned to the insulated chamber the long-pending chamber of transfiguration spacer pad (spacer pad with treat that measured medium is separated fully, not directly contact), spacer pad in the long-pending chamber of transfiguration flow to main chamber through the pin hole of uniform setting on its sidewall again testing pressure is passed in the middle of the pressure guiding system, shows by gear train (as connecting rod or gear mechanism) and indicating device; If the spacer pad of installing in the gauge outfit (leaking such as bourdon tube or soldering opening etc.) is revealed, because part spacer pad (leakage) overflows, the disappearance and cause insulated chamber internal cause spacer pad to be in the underfill state, and then cause the pressure of insulated chamber to decline to a great extent, the pressure continuous action of the testing medium that drain is indoor is on flexible sheet, flexible sheet is owing to the pressure reduction of (being between insulated chamber and the drain chamber) between its both sides is excessive, the spacer pad that is in the long-pending chamber of transfiguration this moment will flow into main chamber by pin hole, flexible sheet will slowly be fitted on the sidewall, thereby make the central part of flexible sheet its pressure correspondence be fitted in the side wall centers position that is provided with through hole, block all through holes, flexible sheet promptly stops to continue to take place deformation, a part of pressure is passed on the sidewall, bear by sidewall, because the aperture of pin hole is very little, flexible sheet is close to again on the hole wall, and measured medium can not crush flexible sheet, just can not enter insulated chamber yet, prevent that testing medium from revealing away.

By above-mentioned Concise Analysis to the utility model structure and principle thereof, can learn that the utility model is simple and reasonable for structure, can effectively stop testing medium to let out through gauge outfit, cause damage, and manufacturing cost is lower, be easy to processing and installation.

Description of drawings

The utility model is described in further detail below in conjunction with accompanying drawing.

Fig. 1 looks the sectional structure synoptic diagram for the master of the utility model embodiment 1;

Fig. 2 looks the sectional structure synoptic diagram for the master that flexible sheet among Fig. 1 is fitted on the sidewall;

Fig. 3 looks the sectional structure synoptic diagram for the master of the utility model embodiment 2;

Fig. 4 looks the sectional structure synoptic diagram for the master of the utility model embodiment 3;

Fig. 5 looks the sectional structure synoptic diagram for the master that flexible sheet among Fig. 4 is fitted on the sidewall;

Fig. 6 looks the sectional structure synoptic diagram for the master of the utility model embodiment 4.

Embodiment

The industrial tensimeter of a kind of safety-type, extremely shown in Figure 6 as Fig. 1, comprise and cooperate the pressure guiding system that is installed in the gauge outfit 1, gear train and indicating device, in the meter base 5 liquid storage cylinder is being set, be separated into insulated chamber and drain chamber 9 by flexible sheet 6 in the liquid storage cylinder, be separated into main chamber 4 and the long-pending chamber 2 of the transfiguration between flexible sheet 6 and next door 8 again by next door 8 in the insulated chamber, the long-pending chamber 2 of transfiguration is communicated with main chamber 4 by the uniform through hole of offering 7 on 8 central parts of next door, main chamber 4 is communicated with cooperating by the pressure guiding system that is provided with in its top liquid outlet 3 and the gauge outfit 1, spacer pad abrim in insulated chamber and the pressure guiding system; Drain chamber 9 is being provided with inlet 10 by its lower end and is being communicated with oil pipe 11 cooperations.

Best technical application scheme is: as shown in Figure 1, the quantity of the long-pending chamber of transfiguration is two, is to be symmetrical arranged; Insulated chamber is positioned at liquid storage cylinder central authorities, and its cross sectional shape is rectangular, and the cross sectional shape correspondence of drain chamber 9 is concave shape; The quantity of through hole 7 is 1-9, the preferred value interval range in its aperture is 0.1-0.9mm, next door 8 lateral surfaces are being provided with the concave shaped streamlined curved surface to meter base 5 central indents, this concave shaped streamlined curved surface matches with the streamlined curved surface of flexible sheet 6 corresponding generations, and the spacing that is equipped with between next door 8 and the flexible sheet 6 should be less than or equal to the crooked deformational displacement of maximum transversal of flexible sheet 6.The quantity of the long-pending chamber of transfiguration also can be one or three, and when the quantity of the long-pending chamber of transfiguration was three, wherein two were and are symmetrical arranged, and another is arranged on the center line between the long-pending chamber of these two transfigurations.

The technical solution of the utility model is not limited to the scope of its best technical application scheme, in fact, through hole 7 its quantity of offering on the next door 8 of the long-pending chamber interior of each transfiguration are not limited to the above-mentioned 1-9 that limits, it also can be 1 or 2, even it is last more than 9, this depends on that it still is greater than the through hole of pinhole aperture that the aperture of through hole belongs to the pinhole aperture numerical range, number of openings more for a long time, the aperture of its single through hole is corresponding less, when number of openings more after a little while, the aperture of its single through hole is corresponding bigger, in addition, the quantity of the long-pending chamber of transfiguration is more than 4 or 4, as long as the aperture quantity uniform with it of through hole adapts, also can reach the most basic technique effect of the utility model or more excellent technique effect at least.

Like this, flexible sheet 6 will coincide with contacting of maximum with claiming the streamlined curved surface that sidewall 8 lateral surfaces are provided with as much as possible because of the streamlined shaped form inner concave that pressure-bearing inwardly produces, so that reach the best techniques effect.Certainly, as Fig. 4 and shown in Figure 5, next door 8 lateral surfaces are the plane, also can satisfy the pacing items of flexible sheet 6 central parts and the corresponding contact matching of sidewall 8 central parts, because of flexible sheet 6 central parts are fitted on sidewall 8 central parts, its central part can be because of being pressed on the plane that claims sidewall 8, and corresponding position in the central becomes a plane and comes corresponding contact.

Spacer pad is silicone oil or glycerine.Flexible sheet can be measured acid, alkaline strong or strong liquid or the gas of corrosivity for by elastic diaphragm corrosion-resistant, that the acid and alkali-resistance material constitutes.

As shown in Figure 6, top liquid outlet 3 by be built in the meter base cavity overvoltage protector 12 with gauge outfit 1 in the pressure guiding system that is provided with cooperate and be communicated with, to prevent excessive damage gauge outfit 1 of pressure or flexible sheet 6.If when in this table overvoltage protective system being housed; when the indication maximal value of the pressure overpressure table of testing medium; overvoltage protective system will be closed, and cause the pressure of testing medium can not continue to manometric pressure guiding system transmission, thereby protect tensimeter can not be damaged.When the pressure of testing medium is lower than manometric indication maximal value, overvoltage protective system will be opened, and cause the pressure of testing medium to continue to the pressure guiding system transmission, and tensimeter recovers normal use again, plays the effect of overvoltage protection simultaneously again.

As Fig. 1, Fig. 2 and shown in Figure 6, sidewall 8 can be thickeied, be 8 liang of inboards of sidewall thicken respectively form the thickening parietal layer 8 that is connected as a single entity with sidewall 8 ', the space of main chamber is dwindled, reduce flow process and gravity losses, improve the precision of its testing pressure numerical value by the testing pressure of spacer pad transmission.

Claims

1. safety-type industry tensimeter, comprise and cooperate the pressure guiding system that is installed in the gauge outfit (1), gear train and indicating device, it is characterized in that: meter base is being provided with liquid storage cylinder in (5), be separated into insulated chamber and drain chamber (9) by flexible sheet (6) in the liquid storage cylinder, be separated into main chamber (4) again by next door (8) in the insulated chamber and be positioned at flexible sheet (6) and next door (8) between transfiguration amass chamber (2), transfiguration is amassed chamber (2) and is communicated with main chamber (4) by the uniform through hole of offering (7) on the central part of next door (8), main chamber (4) is communicated with cooperating by the pressure guiding system that is provided with in its top liquid outlet (3) and the gauge outfit (1), spacer pad abrim in insulated chamber and the pressure guiding system; Drain chamber (9) is being provided with inlet (10) by its lower end and is being communicated with oil pipe (11) cooperation.

2. safety-type industry tensimeter according to claim 1, it is characterized in that: the quantity of the long-pending chamber of transfiguration is one, perhaps the quantity of the long-pending chamber of transfiguration is two, be and be symmetrical arranged, perhaps the quantity of the long-pending chamber of transfiguration is three, wherein two are and are symmetrical arranged, and another is arranged on the center line between the long-pending chamber of these two transfigurations.

3. safety-type industry tensimeter according to claim 2, it is characterized in that: the quantity of the long-pending chamber of transfiguration is two, is to be symmetrical arranged; Insulated chamber is positioned at liquid storage cylinder central authorities, and its cross sectional shape is rectangular, and the cross sectional shape correspondence of drain chamber (9) is concave shape.

4. safety-type industry tensimeter according to claim 1, it is characterized in that: next door (8) lateral surface is being provided with the concave shaped streamlined curved surface to the central indent of meter base (5), and this concave shaped streamlined curved surface matches with the streamlined curved surface of the corresponding generation of flexible sheet (6).

5. safety-type industry tensimeter according to claim 1, it is characterized in that: next door (8) lateral surface is the plane.

6. safety-type industry tensimeter according to claim 1, it is characterized in that: the quantity of through hole (7) is 1-3, and the preferred value interval range in its aperture is 0.3-0.9mm.

7. the industrial tensimeter of multifunctional safe type according to claim 1 is characterized in that: spacer pad is silicone oil or glycerine.

8. safety-type industry tensimeter according to claim 1, it is characterized in that: flexible sheet (6) is by elastic diaphragm corrosion-resistant, that the acid and alkali-resistance material constitutes.

9. safety-type industry tensimeter according to claim 1 is characterized in that: top liquid outlet (3) is communicated with the pressure guiding system cooperation of setting in the gauge outfit (1) by the overvoltage protector (12) that is built in the meter base cavity.