CN203465613U - Specially-made furnace for RGD detection of anti-explosion O-shaped ring - Google Patents
Specially-made furnace for RGD detection of anti-explosion O-shaped ring Download PDFInfo
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- CN203465613U CN203465613U CN201320562118.4U CN201320562118U CN203465613U CN 203465613 U CN203465613 U CN 203465613U CN 201320562118 U CN201320562118 U CN 201320562118U CN 203465613 U CN203465613 U CN 203465613U
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Abstract
Disclosed is a safe and stable specially-made furnace for RGD detection of an anti-explosion O-shaped ring; and the specially-made furnace is reasonable in structure and can rapidly and accurately control temperature up and down. Fuzzy self-adaption PID control and a silicon controlled rectifier pressure-regulating gas heating manner are combined; and the specially-made box-type induction furnace comprises a furnace box body, an inner container disposed in the furnace box body, an upper cover, disposed on the furnace box body, of the furnace box body, and a heating sensing control system of the specially-made box-type induction furnace. The upper cover is provided with three through holes which are respectively used for gas inlet of a RGD jig and connections with a gas outlet pipe and a temperature sensor. Heating pieces having the same power are evenly distributed and installed at the periphery of an inner wall of the furnace box body. According to the specially-made furnace, a gas can be evenly and rapidly heated in a controllable manner, and rapid and accurate requirements, for the temperature up and down, of the RGD detection can also be achieved. The specially-made furnace provides accurate, reliable, low-cost and safe RGD anti-explosion detection equipment references for the RGD anti-explosion detection of the anti-explosion O-shaped ring for a petrochemical valve.
Description
Technical field
The utility model belongs to petrochemical complex detection technique field, is specifically related to a kind of explosion-proof O type circle RGD and detects special stove.
Background technology
In recent years, affected by the factors such as the economy downturn of the states such as American-European and home costs rising, foreign export situation allows of no optimist.Simultaneously, outlet valve is faced with the challenge of severeer trade technical measures, and its outstanding behaviours is product (high parameter: the special operation conditions such as high temperature, high pressure, overcritical etc. and low temperature, nuclear power) technological innovation is not enough with product detection technique or evaluation method disappearance or be not inconsistent international related standard requirements.
At present, the ratio that the consumption of petrochemical industry valve accounts for the total consumption of valve is over 50%.In recent years, in petrochemical complex gas industry valve, explosion-proof O type circle product and detection technique and evaluation means problem highlight more.As stipulated in API 6D < < oil and gas industrial pipeline induction system pipeline valve > >: pressure is at CL600 (10MPa) and above for the valve of hydrocarbon gas, and its O type circle should be selected explosion-proof O type circle; Total company current techique standard " pipeline valve " regulation: except Class A(is that medium is water, air, nitrogen, fluid oil, temperature is room temperature to 75 ℃, for the operating mode such as pouring water) other outer grades must be by Rapid Gas Decompression (hereinafter to be referred as RGD) or AED (Anti-explosion Decompression) test.At present, the explosion-proof O type cycle basis that domestic petrochemical industry and natural gas high pressure valve adopt this from import, its price is even hundred times of the decades of times of domestic like product.Its main cause is to lack explosion-proof O type circle product quality feedback means (being RGD detection technique) and corresponding examination criteria technical manual system (method), thereby cannot solve the Trade technique difficult problem that petrochemical pipe valve sealing element (O type circle) the High Temperature High Pressure hydrocarbon operating mode to frequent generation lost efficacy and causes, can not effective evaluation this operating mode valve products quality and Continual Improvement.
Leakage problem is all outstanding problem and a difficult problem for valve all the time, the accident majority that the leakage of the petrochemical unit of China, plant equipment etc. causes causes by valve invalidation, and the cause that valve leak lost efficacy just (O type circle, the graphite etc.) inefficacy of its seal adopting and machining accuracy with coordinate backlog demand etc.Therefore, the key that solves valve leak problem is its sealing property, and the key of raising sealing property is choose reasonable, the accurate evaluation (or detection) of O-ring seal and uses.
RGD(Rapid Gas Compression) detect, its definition is that the inner rapid pressure reduction of bearing device causes infiltrating the media expansion of resilient material (as O type circle) so that the method for inspection of explosion.Its prerequisite is the rate of diffusion that the pressure decreased speed of bearing device inside must be greater than the medium that infiltrates resilient material inside.
The domestic understanding to RGD detection technique is started late, mainly in recent years along with foreign oil natural gas line valve demand increases year by year, the important indicator that this product has been listed in the use of the explosion-proof O type of high pressure valve circle in is suggested, and RGD detects and also lists one of these series products essential items for inspection in.Since then, some Primary Study have been done by part valve cartel equipment development enterprise, and prepared RGD checkout equipment, it all adopts " constant temperature water bath type of heating ", because the most serviceability temperatures of elastomeric material are below 80 ℃, and the modified rubber material that antiknock O type circle adopts is as CHEMRAZ 526, Silicone(70 Shore) can reach 220 ℃, so conventional O type circle heating design scheme " constant temperature water bath type of heating " is difficult to meet antiknock O type circle RGD testing requirement and firing rate is slow.
Summary of the invention
The purpose of this utility model is to provide a kind of explosion-proof O type circle RGD rational in infrastructure, safe, stable, that quick and precisely heating and cooling are controlled and detects special stove.
For overcoming above-mentioned defect, a kind of explosion-proof O type circle RGD of the utility model detects special stove, adopt Fuzzy Adaptive PID Control to combine with silicon-controlled voltage regulation gas-heated mode, and explosion-proof O type circle RGD detects special stove and comprises stove casing, be placed in the inner bag in stove casing, be placed in the upper cover of stove casing of stove casing top and the heating sensing and controlling system that explosion-proof O type circle RGD detects special stove, on described, cover and offer three air inlets that are respectively used to RGD tool, outlet pipe is connected the through hole using with temperature sensor, the inwall surrounding of stove casing is uniformly distributed the heating plate that power is identical is installed.
Because explosion-proof O type circle RGD detects special stove, adopt Fuzzy Adaptive PID Control to combine with silicon-controlled voltage regulation gas-heated mode, it can realize the controlled even Fast Heating of gas, can realize again the quick and precisely heating and cooling of RGD detected temperatures and control requirement.The utility model provides accurately for petrochemical industry valve detects with the RGD antiknock of explosion-proof O type circle, reliable, low-cost and safe RGD antiknock checkout equipment foundation.
As a kind of improvement: also comprise a thermal circulation fan, described thermal circulation fan is arranged at the bottom of stove casing, to guarantee box house rapid and uniform heating and auxiliary fast cooling when upper cover pulls open.
As a kind of improvement: stainless steel bracing frame has also been set up in the bottom of described stove casing, and whole explosion-proof O type circle RGD detects special stove and supports by stainless steel bracing frame.
As a kind of improvement: described upper cover adopts two opposite opened upper covers, described three air inlets for RGD tool, outlet pipe are connected the centre position that the through hole using is located at two opposite opened upper covers with temperature sensor, and the bottom of this upper cover, with pulley, is provided with the guide rail moving for pulley on the corresponding position of end face of stove casing.
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is the structural representation that explosion-proof O type circle RGD detects special stove.
Fig. 2 is that explosion-proof O type circle RGD detects special furnace interior structural representation.
Fig. 3 is the temperature control flow that explosion-proof O type circle RGD detects special stove.
Fig. 4 is the schematical top view that explosion-proof O type circle RGD detects the upper cover of special stove.
Embodiment
As Fig. 1, Fig. 2, shown in Fig. 4, a kind of explosion-proof O type circle RGD of the utility model detects special stove, explosion-proof O type circle RGD detects special stove and adopts Fuzzy Adaptive PID Control to combine with silicon-controlled voltage regulation gas-heated mode, and explosion-proof O type circle RGD detects special stove and comprises stove casing 6, be placed in the inner bag 14 in stove casing 6, be placed in the upper cover 9 of stove casing 6 of stove casing 6 tops and the heating sensing and controlling system that explosion-proof O type circle RGD detects special stove, on described upper cover 9, offer three air inlets that are respectively used to RGD tool, outlet pipe is connected the through hole 10 using with temperature sensor, the inner bag 14 inwall surroundings of stove casing 6 are uniformly distributed the heating plate that power is identical (being sign in figure) are installed.
In order to guarantee the inner rapid and uniform heating of stove casing 6 and assist fast cooling when upper cover 9 to pull open, a thermal circulation fan 15 is also set in the bottom of stove casing 6.
Described in the present embodiment, stainless steel bracing frame 13 has also been set up in the bottom of stove casing 6, and whole explosion-proof O type circle RGD detects special stove and supports by stainless steel bracing frame 13, makes the bottom surface of stove casing 6 be lifted away from bottom surface.
Folding for the ease of upper cover 9, described upper cover 9 adopts two opposite opened upper covers 9, described three air inlets for RGD tool, outlet pipe are connected the centre position that the through hole 10 using is located at two opposite opened upper covers 9 with temperature sensor, and the bottom of this upper cover 9 is with pulley 11, on the corresponding position of end face of stove casing 6, be provided with the guide rail (being sign in figure) moving for pulley 11, this part instrument and sensing element 12 are placed in outside stove casing 6, avoided cause thermal damage.
As shown in Figure 3, explosion-proof O type circle RGD detects the temperature control mode of special stove: utilize Fuzzy Self-adaptive PID and thyristor regulating depressor to control heating plate and realize temperature control, temperature control flow is as Fig. 3.Casing internal environment gas and tool internal gas medium temperature are heated in monitoring respectively.By this, technological process is carried out to temperature monitoring, and the temperature signal collecting is fed back to PID controller, carry out whole temperature and control, thereby reach control requirement.Thyristor regulating depressor receives the current signal of 4～20mA of PID controller output, adjusts output voltage.Output voltage changes, and the power of heating plate changes thereupon, and then controls heating-up temperature.
Claims (5)
1. an explosion-proof O type circle RGD detects special stove, it is characterized in that: explosion-proof O type circle RGD detects special stove and adopts Fuzzy Adaptive PID Control to combine with silicon-controlled voltage regulation gas-heated mode, and explosion-proof O type circle RGD detects special stove and comprises stove casing (6), be placed in the inner bag (14) in stove casing (6), be placed in the upper cover (9) of stove casing (6) of stove casing (6) top and the heating sensing and controlling system that explosion-proof O type circle RGD detects special stove, on described upper cover (9), offer three air inlets that are respectively used to RGD tool, outlet pipe is connected the through hole (10) using with temperature sensor, the inwall surrounding of stove casing (6) is uniformly distributed the heating plate that power is identical is installed.
2. explosion-proof O type circle RGD according to claim 1 detects special stove, it is characterized in that: also comprise a thermal circulation fan (15), described thermal circulation fan (15) is arranged at the bottom of stove casing (6), to guarantee box house rapid and uniform heating and auxiliary fast cooling when upper cover (9) pulls open.
3. explosion-proof O type circle RGD according to claim 1 and 2 detects special stove, it is characterized in that: stainless steel bracing frame (13) has also been set up in the bottom of described stove casing (6), whole explosion-proof O type circle RGD detects special stove and supports by stainless steel bracing frame (13).
4. explosion-proof O type circle RGD according to claim 1 and 2 detects special stove, it is characterized in that: described upper cover (9) adopts two opposite opened upper covers (9), described three air inlets for RGD tool, outlet pipe are connected the centre position that the through hole (10) using is located at two opposite opened upper covers (9) with temperature sensor, and the bottom of this upper cover (9), with pulley (11), is provided with for the mobile guide rail of pulley (11) on the corresponding position of end face of stove casing (6).
5. explosion-proof O type circle RGD according to claim 3 detects special stove, it is characterized in that: described upper cover (9) adopts two opposite opened upper covers (9), described three air inlets for RGD tool, outlet pipe are connected the centre position that the through hole (10) using is located at two opposite opened upper covers (9) with temperature sensor, and the bottom of this upper cover (9), with pulley (11), is provided with for the mobile guide rail of pulley (11) on the corresponding position of end face of stove casing (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320562118.4U CN203465613U (en) | 2013-09-10 | 2013-09-10 | Specially-made furnace for RGD detection of anti-explosion O-shaped ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320562118.4U CN203465613U (en) | 2013-09-10 | 2013-09-10 | Specially-made furnace for RGD detection of anti-explosion O-shaped ring |
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| Publication Number | Publication Date |
|---|---|
| CN203465613U true CN203465613U (en) | 2014-03-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320562118.4U Expired - Fee Related CN203465613U (en) | 2013-09-10 | 2013-09-10 | Specially-made furnace for RGD detection of anti-explosion O-shaped ring |
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| CN (1) | CN203465613U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112481563A (en) * | 2020-11-26 | 2021-03-12 | 重庆重铝新材料科技有限公司 | Sizing device and method for aluminum alloy heat treatment |
-
2013
- 2013-09-10 CN CN201320562118.4U patent/CN203465613U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112481563A (en) * | 2020-11-26 | 2021-03-12 | 重庆重铝新材料科技有限公司 | Sizing device and method for aluminum alloy heat treatment |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140305 Termination date: 20160910 |