CN201440103U - Anti-explosion safe pressure gauge - Google Patents
Anti-explosion safe pressure gauge Download PDFInfo
- Publication number
- CN201440103U CN201440103U CN2009201122496U CN200920112249U CN201440103U CN 201440103 U CN201440103 U CN 201440103U CN 2009201122496 U CN2009201122496 U CN 2009201122496U CN 200920112249 U CN200920112249 U CN 200920112249U CN 201440103 U CN201440103 U CN 201440103U
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- CN
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- Prior art keywords
- watchcase
- cover
- gauge
- table lid
- pressure
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model discloses an anti-explosion safe pressure gauge, which comprises a front gauge cover (6), a dial (7), a gauge shell (5) with the front surface being closed, a back gauge cover (1) and a pressure measuring mechanism, wherein a metal protection layer (8) is arranged between the gauge shell (5) and the dial (7), the back gauge cover (1) is an elastic thin-walled gauge cover, and the lower part of the inner side of the back gauge cover (1) is fixedly provided with a location pin (3), the gauge shell (5) is provided with a location hole matched with the location pin (3), and the upper part of the location pin (3) on the inner side of the back gauge cover (1) is processed with a groove (2) which extends to the two sides along the radial direction to the edge of the back gauge cover (1). With the structure, the metal protection layer is arranged between the gauge shell and the dial, so the safety factor is high, and since the hole is free from being drilled on the elastic thin-walled back gauge cover, the effect for reducing the manufacturing cost can be achieved.
Description
Technical field
The utility model relates to a kind of test instrumentation, specifically is a kind of anti-explosion safety type tensimeter.
Background technology
Tensimeter is applicable to various occasions as a kind of test instrumentation.Known tensimeter is equipped with pressure measurement mechanisms such as bourdon tube and elastic transmission parts in the watchcase, the watchcase back is closed, and its watchcase front is the open type watchcase.The integrally closed device of general purpose pressure gauge is made up of bonnet (being stamped to form by iron sheet), not enough 0.5mm thick soft aluminum index dial and preceding table lid (being made by transparent plastic or glass).When tensimeter is started working, when improper operation or pressure condition and rated condition have error (being that input pressure surpasses rated pressure), the gas of circulation can carry out pressure release in the weakest local explosion in the table, the direction of explosion has uncertainty, may be towards the dial plate index plane, also may be towards the back of watchcase.If blasting direction when bonnet, the bonnet of iron sheet matter can resist the safely air-flow that releases because of explosion or the safety relief device exhaust in the breakthrough pressure table, but safety still; If but towards index dial and preceding table lid direction, the strong air flow that produces because of the unexpected pressure release of explosion can be broken through preceding table lid that very thin soft aluminium matter index dial and transparent plastic or glass make and being produced to explode and injure operating personnel.Therefore, this tensimeter handling safety coefficient is low, and is quite dangerous.
So occurred a kind of explosion-proof safety-type tensimeter on the market, as Chinese patent disclose on the net the patent No. for " 98232548.7;; utility model patent " safety-type stainless steel pressure table "; it is made up of watchcase, pressure measurement mechanism, front and back table lid etc.; the front of watchcase and side are an integral body, and the formation front surface is closed watchcase; Preceding table lid passes through rubber seal spinning on the closed front surface of watchcase; Pressure measurement mechanism is housed in the watchcase, between watchcase and back table lid, is connected with the temperature compensation diaphragm.But there is following shortcoming in this safety-type stainless steel pressure table:
1. because the enclosed watchcase of tensimeter front surface is an individual layer, when improper operation or pressure were very high, it still can't bear precipitate immense pressure, has just reduced the impulsive force of air-flow, but has been easy to cause watchcase to break, thereby caused security incident.
2. owing to show to cover to be shaped on vent port, can increase the operation of processing like this, thereby increase manufacturing cost in the back.
3. again since preceding table lid be by rubber seal spinning on the closed front surface of watchcase, part is many, also inconvenience of installation and removal.
The utility model content
Technical problem to be solved in the utility model is that the anti-explosion safety type tensimeter of a kind of safety coefficient height, low cost of manufacture is provided.
For solving the problems of the technologies described above, a kind of anti-explosion safety type tensimeter that the utility model provides comprises that preceding table lid, index dial, front surface are enclosed watchcase, back table lid and pressure measurement mechanism, are provided with coat of metal between described watchcase and the index dial; Described back table lid is elastic thin-wall table lid, and its lower inside is fixed with register pin, and the pilot hole that matches with register pin is arranged on the watchcase; The register pin top of showing the lid inboard in the back is shaped on radially and extends to the groove that the back table covers the edge to both sides.
After adopting above structure, the utility model compared with prior art, have the following advantages: owing between watchcase and preceding table cover, be provided with coat of metal, be enough to resist burst pressure and force air-flow to break through the security window of tensimeter bonnet and flow out, safety guarantee is so more arranged; Again owing to show behind the elastic thin-wall to cover to be connected by register pin with watchcase, and the back table on register pin top covers the inboard groove of radially showing to cover the edge after both sides extend to that is shaped on, even it is the performance of the elastic bending of fulcrum that back table lid has with the register pin, work as misoperation or pressure condition and rated condition like this error is arranged, be that input pressure is when surpassing rated pressure, it is fulcrum that the gas that circulates in the table will show to cover register pin later on, the back table portion that covers flicks the effect that reaches pressure release to the off-balancesheet side, after pressure is normal, the back table portion of the covering original position of to rebound again, therefore need not cover punching and come pressure release, thereby reach the effect that reduces manufacturing cost at the back table.
As improvement, this tensimeter also comprises the elastic covering circle, and described watchcase front surface edge and preceding table lid edge are by elastic covering circle snapping.Adopt this structure, make watchcase simpler, take apart and install more convenient with being connected of preceding table lid.
Description of drawings
Shown in Figure 1 is the manometric sectional structure synoptic diagram of the utility model anti-explosion safety type;
Shown in Figure 2 is the sectional structure synoptic diagram of table lid in back in the utility model anti-explosion safety type tensimeter;
Shown in Figure 3 is among Fig. 2 A is to synoptic diagram.
Wherein: 1, back table lid; 2, groove; 3, register pin; 4, elastic covering circle; 5, watchcase; 6, preceding table lid; 7, index dial; 8, coat of metal.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is done explanation in further detail.
By the manometric structural representation of the utility model anti-explosion safety type of Fig. 1～shown in Figure 3 as can be known, table cover 6 before it comprised, index dial 7, front surface be that enclosed watchcase 5, back show to cover 1 and pressure measurement mechanism.Table cover 6 and is connected on the front surface of watchcase 5 with index dial 7 before described, shows to cover 6 before promptly described index dial 7 is positioned at, and is connected on the front surface of watchcase 5.Described back table covers 1 and is connected watchcase 5 back, and described pressure measurement mechanism is contained in 5 li of watchcases, is provided with coat of metal 8 between described watchcase 5 and the index dial 7.Described back table covers 1 and is elastic thin-wall table lid, and its lower inside is fixed with register pin 3, and the pilot hole that matches with register pin 3 is arranged on the watchcase 5; Register pin 3 tops of covering 1 inboard at the back table are shaped on the groove 2 of radially showing to cover 1 edge after both sides extend to.This tensimeter also comprises elastic covering circle 4, and described elastic covering circle 4 covers 6 edges to watchcase 5 front surface edges and preceding table and snaps together, and has save spinning machine of the prior art, thereby has reached the simplification of structure.
During work; when misoperation or pressure condition and rated condition have error; be that input pressure is when surpassing rated pressure; watchcase 5 fronts that are added with coat of metal 8 have enough resists the instantaneous immense pressure of bringing because of the strong air flow of the unexpected pressure release generation of explosion; so the gas of circulation will show to cover 1 breakthrough backward in the table; it is fulcrum with register pin 3 that this moment back table cover 1, and the back is shown to cover 1 top and flicked the effect that reaches pressure release to the off-balancesheet side.After pressure was normal, the back table covered 1 top and can return to original position again.
Claims (2)
1. anti-explosion safety type tensimeter, table lid (6), index dial (7), front surface are enclosed watchcase (5), back table lid (1) and pressure measurement mechanism before comprising, it is characterized in that: be provided with coat of metal (8) between described watchcase (5) and the index dial (7); Described back table lid (1) is elastic thin-wall table lid, and its lower inside is fixed with register pin (3), and the pilot hole that matches with register pin (3) is arranged on the watchcase (5); Be shaped on the groove (2) that radially extends to table lid (1) edge, back to both sides on inboard register pin (3) top of back table lid (1).
2. anti-explosion safety type tensimeter according to claim 1 is characterized in that: this tensimeter also comprises elastic covering circle (4), and described watchcase (5) front surface edge and preceding table lid (6) edge are by elastic covering circle (4) snapping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201122496U CN201440103U (en) | 2009-01-04 | 2009-01-04 | Anti-explosion safe pressure gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201122496U CN201440103U (en) | 2009-01-04 | 2009-01-04 | Anti-explosion safe pressure gauge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201440103U true CN201440103U (en) | 2010-04-21 |
Family
ID=42544767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201122496U Expired - Fee Related CN201440103U (en) | 2009-01-04 | 2009-01-04 | Anti-explosion safe pressure gauge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201440103U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102680167A (en) * | 2012-05-07 | 2012-09-19 | 昆山艾迩莱特仪器仪表有限公司 | Explosion-proof pressure gauge |
| CN107515070A (en) * | 2017-09-29 | 2017-12-26 | 无锡市凯丰压力表有限公司 | A kind of explosion-proof type pressure gauge |
-
2009
- 2009-01-04 CN CN2009201122496U patent/CN201440103U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102680167A (en) * | 2012-05-07 | 2012-09-19 | 昆山艾迩莱特仪器仪表有限公司 | Explosion-proof pressure gauge |
| CN107515070A (en) * | 2017-09-29 | 2017-12-26 | 无锡市凯丰压力表有限公司 | A kind of explosion-proof type pressure gauge |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100421 Termination date: 20140104 |