CN2541695Y - Superpressure preventing and detaching proof micropressure limiter - Google Patents
Superpressure preventing and detaching proof micropressure limiter Download PDFInfo
- Publication number
- CN2541695Y CN2541695Y CN 02217482 CN02217482U CN2541695Y CN 2541695 Y CN2541695 Y CN 2541695Y CN 02217482 CN02217482 CN 02217482 CN 02217482 U CN02217482 U CN 02217482U CN 2541695 Y CN2541695 Y CN 2541695Y
- Authority
- CN
- China
- Prior art keywords
- limiter
- weight
- valve
- protective housing
- inlet pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000001681 protective effect Effects 0.000 claims abstract description 16
- 238000007789 sealing Methods 0.000 claims abstract description 16
- 229910001018 Cast iron Inorganic materials 0.000 claims description 4
- 230000002265 prevention Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000003556 assay Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Safety Valves (AREA)
Abstract
An anti-overpressure anti-disassembly micropressure limiter is characterized in that a valve cover 3 and a heavy hammer 4 are both pyramidal, a radial through hole is arranged on the heavy hammer 4, the outer portion of a valve is provided with a protective casing 6, a bottom board 7 which is combined with the protective casing 6 into one piece is fixed on an air inlet pipe joint 2, and the joint portion between the protective casing 6 and the bottom board 7 is provided with a lead sealing anti-disassembly bolt 8. Compared with the prior art, the utility model has the advantages of small volume, light weight, low fabrication cost, excellent hermeticity, strong accident prevention performance and the like. The applicable pressure of the limiter is 0.04 Mpa-0.09 Mpa, and the limiter has better social benefit and economic benefit.
Description
Technical field
The utility model relates to a kind of safety valve, the anti-dismounting of particularly a kind of superpressure preventing minute-pressure limiter.Be commonly called as the dead weight formula safety valve of the anti-dismounting of superpressure preventing.
Background technique
Boiler whether safe operation is a major issue concerning personal safety, pressure restrictor is one of boiler safety three big safety attachments that must be equipped with, why the part boiler has an accident, there are defective or processing in the design that its reason one is boiler and annex thereof, installation quality is not good enough, the 2nd, due to artificial superpressure is moved, in order to ensure boiler operatiopn safety, Zhejiang Province issues " Zhejiang matter is sent out file [2002] No. 22 " in January, 2000, file has all been made concrete regulation to the All aspects of of boiler, as to " the small-sized Micropressure boiler of holding the quality certification can install water sealing (sealing water) pipe or the minute-pressure limiter prevents superpressure ", but some user valving on water sealing (sealing water) pipe is found in site inspection, improves the working pressure of boiler with this; The regulation water sealing (sealing water) pipe should have the insulation measure, and most user does not add the insulation measure, causes the interior water freezing of water sealing (sealing water) pipe in winter to make the boiler superpressure; Some user that the minute-pressure limiter is housed arbitrarily increases the weight of the weight of weight, improves the working pressure of boiler artificially.When people looked forward to improving the boiler quality by scientific and technical innovation, And prevented artificial superpressure operation with technological means, eliminates accident potential.
Summary of the invention
The anti-dismounting of a kind of superpressure preventing minute-pressure limiter, comprise valve seat 1, steam inlet pipe joint 2, valve gap 3, weight 4, steam ouput 5, valve seat 1, steam inlet pipe joint 2, valve gap 3, weight 4 coaxial arrangement, steam inlet pipe joint 2 are installed in valve seat 1 bottom, valve gap 3 and weight 4 are connected as a single entity, and be shelved on the valve seat 1, it is characterized in that: valve gap 3 and weight 4 are taper, have radial direction through hole 4a on the weight 4, a protective housing 6 is equipped with in the outside of valve, this protection is provided with steam ouput 5 and weakness 6a, and the base plate 7 that is connected as a single entity with protective housing 6 is fixed on the steam inlet pipe joint 2, and protective housing 6 is equipped with an anti-dismounting screw 8 that adds lead sealing with the joint of base plate 7; Protective housing 6 adopts cast iron to cast, and weakness 6a is arranged on the top of protective housing 6.
Protective housing is set has the safety protection effect, adopt cast iron materials to have the gas cutting proof function, be provided with weakness 6a at its top, even the user is installed valve artificially additional on exhaust steam pipe, upborne vapour pressure will be broken through the weakness pressure release, prevent the superpressure operation; Weight and valve gap be designed to taper, weight is taper can prevent that the someone from ignoring national law and removing lead sealing and open protective housing and increase the weight of on weight, valve gap is taper can make tight and play the work of guiding with the contact surface of valve seat, help improving sealability, prevent to leak, and valve seat and valve gap all adopt the chromium stainless steel material, have very high wear resistance, help to prolong the working life of safety valve; Setting adds the anti-dismounting screw of lead sealing, be that for the quality supervision department expert boiler erection to be installed additional lead sealing after the assay was approved used, the product user that national regulation installs additional after the lead sealing must not be removed lead sealing voluntarily, otherwise the law enfrocement official has the right the party is sentenced economy or administrative penalty.
With prior art relatively, the utility model has the advantages that: this limiter has that volume is little, in light weight, and cost is low, good airproof performance, and advantage such as the accident prevention function is strong has good social benefit and economic benefit.
The drawing explanation
Fig. 1 is the anti-dismounting of superpressure preventing minute-pressure limiter structure schematic representation
Embodiment
A kind of working pressure is the anti-dismounting of the superpressure preventing of a 0.04MPa minute-pressure limiter, its structure as shown in Figure 1, the admission aperture is 23mm, vapor opening directly is 42mm, valve seat and valve gap adopt chromium stainless steel to make, and protective housing is cast by cast iron, and quality of product meets the GB12242-89 standard.
Claims (2)
1, the anti-dismounting of superpressure preventing minute-pressure limiter, comprise valve seat (1), steam inlet pipe joint (2), valve gap (3), weight (4), steam ouput (5), valve seat (1), steam inlet pipe joint (2), valve gap (3), weight (4) coaxial arrangement, steam inlet pipe joint (2) is installed in valve seat (1) bottom, valve gap (3) and weight (4) are connected as a single entity, and be shelved on the valve seat (1), it is characterized in that: valve gap (3) and weight (4) are taper, have radial direction through hole (4a) on the weight (4), a protective housing (6) is equipped with in the outside of valve, this protection is provided with steam ouput (5) and weakness (6a), and the base plate (7) that is connected as a single entity with protective housing (6) is fixed on the steam inlet pipe joint (2), and protective housing (6) is equipped with an anti-dismounting screw (8) that adds lead sealing with the joint of base plate (7).
2, limiter according to claim 1 is characterized in that: protective housing (6) adopts cast iron to cast, and weakness (6a) is arranged on the top of protective housing (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02217482 CN2541695Y (en) | 2002-05-15 | 2002-05-15 | Superpressure preventing and detaching proof micropressure limiter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02217482 CN2541695Y (en) | 2002-05-15 | 2002-05-15 | Superpressure preventing and detaching proof micropressure limiter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2541695Y true CN2541695Y (en) | 2003-03-26 |
Family
ID=33696284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02217482 Expired - Fee Related CN2541695Y (en) | 2002-05-15 | 2002-05-15 | Superpressure preventing and detaching proof micropressure limiter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2541695Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103270351A (en) * | 2010-11-03 | 2013-08-28 | 莱内曼两合公司 | Control valve |
| CN104989857A (en) * | 2015-07-16 | 2015-10-21 | 常州协昌橡塑有限公司 | Non-pressure exhausting device |
| CN108006359A (en) * | 2018-01-09 | 2018-05-08 | 吴兆和 | A kind of anti-vacuum unloads dirty pipeline fatigue rupture device |
-
2002
- 2002-05-15 CN CN 02217482 patent/CN2541695Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103270351A (en) * | 2010-11-03 | 2013-08-28 | 莱内曼两合公司 | Control valve |
| US9360127B2 (en) | 2010-11-03 | 2016-06-07 | Protego (Usa), Inc. | Control valve |
| CN104989857A (en) * | 2015-07-16 | 2015-10-21 | 常州协昌橡塑有限公司 | Non-pressure exhausting device |
| CN108006359A (en) * | 2018-01-09 | 2018-05-08 | 吴兆和 | A kind of anti-vacuum unloads dirty pipeline fatigue rupture device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |