CN213932051U - Improved type proppant protective atmosphere tubular sintering furnace - Google Patents
Improved type proppant protective atmosphere tubular sintering furnace Download PDFInfo
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- CN213932051U CN213932051U CN202022993355.9U CN202022993355U CN213932051U CN 213932051 U CN213932051 U CN 213932051U CN 202022993355 U CN202022993355 U CN 202022993355U CN 213932051 U CN213932051 U CN 213932051U
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- proppant
- corundum tube
- furnace
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- sintering
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Abstract
The utility model provides an improved proppant protective atmosphere tubular sintering furnace, which comprises a normal temperature multistage vacuum-protective gas replacement device, a corundum tube component, a furnace body, a cooling device and a filtering device; the normal-temperature multistage vacuum-protective gas replacement device performs vacuumizing-protective gas replacement under the normal-temperature condition to realize the protective atmosphere condition in the corundum tube; the corundum tube assembly can realize convenient loading and unloading and sealed sintering of a propping agent blank sample; the furnace body can heat the corundum tube and the proppant blank inside the corundum tube; the cooling device cools two ends of the corundum tube and provides support; the filtering device can filter impurities carried by the gas. The utility model discloses a through the combination of corundum tube subassembly realize the nimble loading and unloading of proppant idiosome and the sintering of the same kind temperature curve "one furnace type" of multiple proppant, through adopting the technical thinking of "multistage vacuum of normal atmospheric temperature-protective gas replacement, high temperature protective gas continuously pours into", simplify the pipeline structure, realize low-cost protective atmosphere sintering.
Description
Technical Field
The utility model belongs to the technical field of material preparation equipment and, concretely relates to improved generation proppant protective atmosphere tubular sintering stove.
Background
Proppants are one of the key materials for hydraulic fracturing. The development of a novel proppant needs to go through three stages of indoor pilot plant test, pilot plant test and industrial production. When sintering a proppant blank sample in an indoor lab scale stage, a tube furnace is often needed for sintering in a protective atmosphere. When a traditional tubular furnace is used for drying and sintering granular proppant blank samples, the problems of difficult feeding and discharging and higher cost of a protective gas sintering system exist. Aiming at the problems, the improvement and optimization of the traditional tube furnace are particularly important for providing simple, reliable and low-cost equipment for sintering the proppant in the laboratory in the protective atmosphere.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an improved generation proppant protective atmosphere tubular sintering stove. The device focuses on the problem that feeding and discharging are difficult during sintering of granular proppants, and provides a corundum proppant sintering type sample box, which can realize flexible loading and unloading of proppant blank samples and one-furnace sintering of the same temperature curves of various proppants, and effectively avoid particle mixing; aiming at the problem that the traditional tube furnace protective gas sintering system is high in cost, the technical idea of normal-temperature multi-stage vacuum-protective gas replacement and high-temperature protective gas continuous injection is adopted, the pipeline structure is simplified, and low-cost protective atmosphere sintering is realized.
The utility model adopts the technical scheme as follows:
an improved tubular sintering furnace with proppant protective atmosphere comprises a normal-temperature multistage vacuum-protective gas replacement device, a corundum tube assembly, a furnace body, a cooling device and a filtering device.
Further, the normal-temperature multistage vacuum-protective gas replacement device comprises a vacuum pump, a gas cylinder, a pressure reducing valve, a manometer and a control valve, and is connected with the corundum tube assembly through a pipeline, the vacuum pump vacuumizes the corundum tube at normal temperature to reduce oxygen partial pressure, the gas cylinder provides protective gas to replace oxygen again to reduce oxygen partial pressure, and the multi-stage circulation realizes oxygen-less or oxygen-free sintering in the corundum tube.
Still further, the corundum tube assembly is composed of a corundum tube, a ceramic furnace plug, a corundum type sample box and a tubular furnace flange, one end of the corundum tube is connected with the normal-temperature multistage vacuum-protective gas replacement device through the tubular furnace flange, the other end of the corundum tube is connected with the filtering device through the tubular furnace flange, and the corundum type sample box and the ceramic furnace plug are placed in the corundum tube when in use.
Furthermore, the corundum type sample box is used for containing a propping agent blank sample and enabling loading and unloading to be more convenient, one-furnace sintering of various propping agents can be realized through combination of a plurality of corundum type sample boxes, and the ceramic furnace plug is used for reducing heat loss in the sintering process.
Furthermore, the furnace body contains heating furnace and control box, the heating furnace can realize 1600 ℃ high temperature long-time sintering and 1750 ℃ limit temperature short time sintering, the control box is equipped with digital display control panel and pneumatic rod can realize multistage alternating temperature gradient formula sintering and slope and unload.
Furthermore, the cooling device cools the two ends of the corundum tube in the high-temperature sintering process through circulating water so as to ensure the sealing effectiveness and prolong the service life of the sealing ring, and the corundum tube can be effectively supported through the welded supporting steel frame so as to prevent the corundum tube from deforming and breaking due to self weight in the high-temperature sintering process.
Further, the filter apparatus filters impurities carried over by the gas at the outlet end by submerging the outlet end with water.
The utility model discloses an improved generation proppant protective atmosphere tubular fritting furnace's characteristics and advantage are:
1. the utility model discloses after utilizing corundum formula appearance box splendid attire proppant idioplasm, again with both together the propelling movement get into tubular furnace core heating section, effectively prevented direct reinforced to the destruction of the proppant idioplasm of not forming intensity, made things convenient for the strong loading and unloading of graininess proppant idioplasm, can realize the same temperature curve "one stove formula" sintering of multiple proppant idioplasm through the combination of a plurality of corundum formula appearance boxes, effectively avoid the granule to mix.
2. The utility model discloses a "multistage vacuum of normal atmospheric temperature-protective gas replacement, high temperature protective gas continuously pours into" technical thinking, through parts allies oneself with uses such as gas cylinder, vacuum pump, tube furnace flange and simplifies the pipeline structure, realizes the sintering of low-cost tube furnace atmosphere.
Drawings
For a clearer understanding of the present invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings and examples
FIG. 1 is a schematic overall view of an improved proppant-protected atmosphere tubular sintering furnace of the present invention;
FIG. 2 is a schematic view of a normal temperature multi-stage vacuum-shielding gas replacement device of the improved proppant shielding atmosphere tubular sintering furnace of the present invention;
FIG. 3 is a schematic view of a corundum tube assembly of the improved proppant-protected atmosphere tube sintering furnace of the present invention;
FIG. 4 is a schematic view of a cooling apparatus of the improved proppant-protected atmosphere tubular sintering furnace of the present invention;
fig. 5 is a furnace body schematic diagram of the improved proppant protective atmosphere tubular sintering furnace of the invention.
Shown in the figure: 1-gas cylinder, 2-vacuum pump, 3-cooling device, 4-furnace body, 5-corundum tube component, 6-filtering device, 7-pressure gauge, 8-pressure regulating valve, 9-control valve, 10-vacuum pressure gauge, 11-O-shaped sealing ring, 12-flange, 13-fastening screw, 14-ceramic furnace plug, 15-corundum type sample box, 16-corundum tube, 17-cooling water inlet, 18-supporting steel frame, 19-locking screw, 20-hot water outlet, 21-pneumatic rod, 22-heating furnace, 23-hearth, 24-digital display controller and 25-indicator
Detailed Description
In order to clearly understand the contents of the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the examples of the present invention.
As shown in fig. 1 to 5, the present invention provides an improved proppant-protecting atmosphere tubular sintering furnace, which comprises normal temperature multi-stage vacuum-protecting gas replacement devices 1 and 2, a cooling device 3, a furnace body 4, a corundum tube assembly 5, and a filtering device 6.
The utility model discloses in the example, digital display controller 25 be used for setting up gradient formula sintering parameter, granular proppant embryo appearance is placed corundum formula sample box 15 in and with corundum formula sample box 15 put into together corundum tube 16 in, vacuum pump 2 right under normal atmospheric temperature corundum tube 16 carry out the evacuation, utilize afterwards gas cylinder 1 carry out the protective gas replacement, so circulate 2 ~ 3 times after, keep gas cylinder 1 open and carry out the proppant sintering experiment afterwards. The proppant green sample is heated in the corundum tube 16 by the furnace body 4, and the protective gas is continuously injected into the corundum tube 16 through the gas cylinder 1, the pressure regulating valve 8 and the control valve 9, and is discharged after being filtered by the filter device 6, thereby realizing the sintering in the protective atmosphere of the granular proppant.
According to the utility model discloses an embodiment, it is shown to cooperate figure 2, multistage vacuum of normal atmospheric temperature-protective gas replacement device passes through control valve 9 realize the switching of different branch roads, gas cylinder 1 be used for providing protective gas under relief pressure valve 8's control, vacuum pump 2 be used for carrying out the evacuation to the pipeline, manometer 7 and vacuum pressure gauge 10 be used for monitoring the pressure value of pipeline.
According to the utility model discloses an embodiment, it is shown in cooperation figure 3, 15 splendid attire proppant embryonic samplings of corundum formula appearance box arrange in after 16 corundum tubes in, ceramic stove stifled 14 arrange in 16 inside both ends of corundum tubes for reduce the thermal scattering and disappearing of sintering process, O shape sealing washer 11 be in flange 12 and fastening screw 13's effect under produce deformation, thereby the realization is right 16 both ends of corundum tubes are sealed.
According to an embodiment of the present invention, as shown in fig. 4, the cooling device is provided with a cooling water inlet 17 for flowing cooling water, a corundum tube is cooled at both ends and then is discharged from a hot water outlet 20 for protecting the flange and the O-ring at both ends of the corundum tube, the supporting steel frame 18 is provided with a locking screw 19 for connecting with the cooling device 3, and the purpose is to support the cooling device 3 and the corundum tube 16 inside the cooling device, thereby preventing the corundum tube 16 from deforming or breaking at high temperature.
According to an embodiment of the utility model, as shown in fig. 5, the heating furnace 22 realizes heating through the resistance wire, the furnace 23 be used for placing the corundum tube 16, the pneumatic rod 21 can realize supplementary slope and unload, the digital display controller 25 be used for setting up sintering parameters, the indicator 25 be used for display device's electric current, voltage and operating conditions.
Claims (3)
1. An improved proppant protective atmosphere tubular sintering furnace which is characterized in that: the improved proppant protective atmosphere tubular sintering furnace comprises a normal-temperature multistage vacuum-protective gas replacement device, a corundum tube assembly, a furnace body, a cooling device and a filtering device; the normal-temperature multistage vacuum-protective gas replacement device comprises a vacuum pump, a gas cylinder, a pressure reducing valve and a control valve; the corundum tube component comprises a hollow semi-cylindrical corundum type sample box made of corundum.
2. The improved proppant-protected atmosphere tubular sintering furnace of claim 1, wherein: the corundum tube assembly also comprises a ceramic furnace plug and a tubular furnace flange.
3. The improved proppant-protected atmosphere tubular sintering furnace of claim 1, wherein: the cooling devices are positioned at two ends of the outer part of the corundum tube and can provide cooling and supporting for the corundum tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022993355.9U CN213932051U (en) | 2020-12-14 | 2020-12-14 | Improved type proppant protective atmosphere tubular sintering furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022993355.9U CN213932051U (en) | 2020-12-14 | 2020-12-14 | Improved type proppant protective atmosphere tubular sintering furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213932051U true CN213932051U (en) | 2021-08-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022993355.9U Active CN213932051U (en) | 2020-12-14 | 2020-12-14 | Improved type proppant protective atmosphere tubular sintering furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213932051U (en) |
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2020
- 2020-12-14 CN CN202022993355.9U patent/CN213932051U/en active Active
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