CN210428217U - Temperature control device for reaction furnace - Google Patents
Temperature control device for reaction furnace Download PDFInfo
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- CN210428217U CN210428217U CN201921605228.8U CN201921605228U CN210428217U CN 210428217 U CN210428217 U CN 210428217U CN 201921605228 U CN201921605228 U CN 201921605228U CN 210428217 U CN210428217 U CN 210428217U
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Abstract
The temperature control device for the reaction furnace comprises a temperature sensing bulb arranged beside a heating plate of the reaction furnace, wherein the temperature sensing bulb is communicated with a capillary tube, the capillary tube is communicated with a temperature control mechanism, and the temperature control mechanism controls the on-off of a power supply of the heating plate by sensing the pressure change in the capillary tube. The temperature control of the heating plate at the bottom of the reaction furnace can be effectively controlled, the service life of the cone structure of the reaction furnace is prolonged, and the times of parking and maintenance are reduced.
Description
Technical Field
The utility model belongs to heating furnace temperature control field, in particular to be used for reaction furnace temperature control device.
Background
As shown in FIG. 6, a reaction treatment furnace (reaction furnace for short) of the fumed silica production line has a cone structure at the bottom of the furnace body, and a heating plate is arranged in the cone; the device for controlling the temperature of the reaction treatment furnace in the fumed silica production line generally adopts silicon controlled rectifier control, as shown in fig. 6, wherein T2, T3 and T4 in the figure represent temperature measurement points at three different positions, TE represents a temperature measurement element (generally adopting a thermal resistor), and TIC represents temperature indication of the measurement points.
The existing temperature control equipment has the following defects: the measuring point of the temperature control device is positioned in the middle of the furnace body, the temperature is much lower than that of the bottom of the furnace body, the temperature of the bottom of the furnace body (namely a cone structure) is very high, the bottom of the furnace body is lack of the temperature measuring device, and the start and stop of the heating plate cannot be controlled, because the common thermal resistor or thermocouple is difficult to resist high temperature, the common thermal resistor or thermocouple cannot be used; while thermocouples which withstand high temperatures are expensive.
Therefore, the cone of the reaction treatment furnace of the existing fumed silica production line has low service life due to overhigh temperature, and the times of parking and maintenance are increased.
Disclosure of Invention
In view of the technical problem that the background art exists, the utility model provides a be used for reaction furnace temperature control device can control the temperature control of reaction furnace bottom heating plate effectively, has improved the life of reaction furnace centrum structure, has reduced the parking and has overhauld the number of times.
In order to solve the technical problem, the utility model discloses following technical scheme has been taken and has been realized:
the temperature control device for the reaction furnace comprises a temperature sensing bulb arranged beside a heating plate of the reaction furnace, wherein the temperature sensing bulb is communicated with a capillary tube, the capillary tube is communicated with a temperature control mechanism, and the temperature control mechanism controls the on-off of a power supply of the heating plate by sensing the pressure change in the capillary tube.
In a preferred scheme, the temperature control mechanism comprises a trigger switch, and the trigger switch is connected with a contactor coil in series; the normally closed contact of the contactor is connected with the heating sheet in series, and the normally closed contact wire inlet side of the contactor is used for being connected with a heating power supply;
the trigger switch is provided with an incoming terminal and an outgoing terminal, and the incoming terminal is used for connecting a control power supply live wire; the trigger switch also comprises a connecting sheet which is used for connecting or disconnecting the incoming line terminal and the outgoing line terminal.
In a preferred embodiment, the inlet terminal and the outlet terminal are mounted on the base.
In a preferred scheme, the connecting piece comprises a central column, the central column is arranged on the base through a bearing, the central column is connected with a rotating rod, and the rotating rod is a conductor; the rotating rod rotates to realize the connection or disconnection of the incoming line terminal and the outgoing line terminal;
one end of the rotating rod is connected with the movable push rod through a sliding slot and an inserting rod, and the movable push rod is communicated with the capillary tube; the movable push rod is used for sensing the pressure change of the capillary tube so as to drive the rotating rod to rotate; the movable push rod is an insulator.
In a preferred scheme, the movable push rod comprises a sleeve and a push rod, the push rod is inserted into the sleeve and is contacted with the inner wall of the sleeve; the sleeve is communicated with the capillary tube, the push rod is connected with the rotating rod through the sliding slot and the inserted bar, the sliding slot is connected to the outer wall of the rotating rod, the inserted bar is connected to the push rod, and the inserted bar is inserted into the sliding slot and arranged.
In the preferred scheme, the dwang both ends be equipped with electrically conductive ball, be equipped with electrically conductive ball holding tank on incoming line terminal and the terminal that goes out the line, electrically conductive ball holding tank is used for coordinating with electrically conductive ball.
In the preferred scheme, the base is provided with a protective cover, the protective cover is connected with the base through bolts, and the side wall of the protective cover is provided with a threading groove and a movable push rod adapting groove.
In a preferable scheme, the movable push rod is fixed at the position of the movable push rod adapting groove through a fixing plate.
This patent can reach following beneficial effect:
the device adopts the structure that the temperature sensing bulb is arranged in the reaction furnace cone structure and beside the heating sheet, the temperature sensing bulb is communicated with the capillary tube, the capillary tube is communicated with the temperature control mechanism, and the temperature control mechanism controls the on-off of the power supply of the heating sheet by sensing the pressure change in the capillary tube. When the temperature of the heating plate is too high, the heating power supply can be controlled to be disconnected through the temperature control mechanism, so that the effect of avoiding the overhigh temperature of the reaction furnace cone structure is achieved, the service life of the reaction furnace cone structure is prolonged, and the overhaul period is prolonged.
Drawings
The invention will be further explained with reference to the following figures and examples:
FIG. 1 is a schematic view of the installation position of the present invention;
FIG. 2 is an enlarged view of FIG. 1 at A;
FIG. 3 is a control wiring diagram of the heating plate of the present invention;
fig. 4 is a three-dimensional structure diagram of the temperature control mechanism of the present invention, at this time, the protection cover is not installed;
fig. 5 is a three-dimensional structure diagram of the temperature control mechanism of the present invention, in which the protection cover is installed;
fig. 6 is a schematic view of temperature control of a conventional reaction furnace.
In the figure: the temperature sensing device comprises a temperature sensing bulb 1, a capillary tube 2, a temperature control mechanism 3, a trigger switch 31, a base 32, a protective cover 33, an incoming line terminal 311, an outgoing line terminal 312, a switch-on piece 313, a central column 313-1, a bearing 313-2, a rotating rod 313-3, a conductive ball 313-4, a heating piece 4, a movable push rod 5, a sleeve 51, a push rod 52, a threading groove 6, a movable push rod adapting groove 7 and a fixing plate 8;
t2, T3, and T4 represent temperature measurement points at three different locations;
TE denotes a temperature measuring element, TIC denotes a temperature indication of the measuring point;
l denotes a live line of the heating power supply, and N denotes a neutral line of the heating power supply.
Detailed Description
As shown in fig. 1 and 2, a temperature control device for a reaction furnace comprises a temperature sensing bulb 1 arranged beside a heating plate 4 of the reaction furnace, wherein the temperature sensing bulb 1 is communicated with a capillary tube 2, the capillary tube 2 is communicated with a temperature control mechanism 3, and the temperature control mechanism 3 controls the power supply of the heating plate 4 by sensing the pressure change in the capillary tube 2. The thermal bulb 1 is positioned in the cone structure of the reaction furnace.
The temperature sensing bulb is one of the components of a thermostatic expansion valve, is generally tied on an air outlet pipe of an evaporator, is usually used for sensing the temperature of an outlet of the evaporator, converting the temperature information into pressure information and transmitting the pressure information to a valve body, thereby playing a role in regulating the flow. The technical scheme utilizes the principle that the temperature sensing bulb 1 expands with heat and contracts with cold, and realizes the control of the on-off of the power supply of the heating plate 4 through the physical characteristics of the expansion with heat and the contraction with cold of the medium in the temperature sensing bulb 1.
Further, as shown in fig. 3, the temperature control mechanism 3 includes a trigger switch 31, and the trigger switch 31 is connected in series with the coil of the contactor 9; a normally closed contact of the contactor 9 is connected with the heating sheet 4 in series, and the normally closed contact wire inlet side of the contactor 9 is used for being connected with a heating power supply;
the trigger switch 31 is provided with an incoming terminal 311 and an outgoing terminal 312, wherein the incoming terminal 311 is used for connecting a control power live wire; the trigger switch 31 further includes a switch-on piece 313, and the switch-on piece 313 is used for switching on or off the incoming line terminal 311 and the outgoing line terminal 312.
The control power supply is 220V alternating current, the contactor 9 is an alternating current contactor with the rated voltage of 220V, when the incoming line terminal 311 and the outgoing line terminal 312 are connected, the coil of the contactor 9 is electrified, the normally closed contact of the contactor 9 is disconnected, the heating plate 4 is electrified, and the heating plate 4 stops heating.
Since the current of the heating sheet 4 is relatively large, if the trigger switch 31 is directly used to control the heating power, an arc phenomenon may occur, and thus a contactor is used to control the heating power. The trigger switch 31 mainly serves as a trigger mechanism for pressure detection.
One end of the heating plate 4 is connected with a zero line, the other end of the heating plate 4 is connected with a heating power live wire through a contactor 9 normally closed contact, and the contactor 9 normally closed contact controls the on-off of a heating power supply, so that the on-off of the heating plate 4 is realized.
Further, as shown in fig. 4 and 5, an inlet terminal 311 and an outlet terminal 312 are mounted on the base 32. The base 32 is made of plastic, the incoming line terminal 311 and the outgoing line terminal 312 are made of copper, the incoming line terminal 311 and the outgoing line terminal 312 are fixed with the base 32 in a scarf joint or bolt connection mode, and bolts for connecting lead wires are arranged on the incoming line terminal 311 and the outgoing line terminal 312.
Further, the switch-on piece 313 comprises a central column 313-1, the central column 313-1 is installed on the base 32 through a bearing 313-2, the central column 313-1 is connected with a rotating rod 313-3, and the rotating rod 313-3 is a conductor; the rotating rod 313-3 rotates to realize the connection or disconnection of the incoming line terminal 311 and the outgoing line terminal 312;
one end of the rotating rod 313-3 is connected with the movable push rod 5 through a sliding slot and an inserting rod, and the movable push rod 5 is communicated with the capillary tube 2; the movable push rod 5 is used for sensing the pressure change of the capillary tube 2 so as to drive the rotating rod 313-3 to rotate; the movable push rod 5 is an insulator. The movable push rod 5 is made of plastic.
The rotating rod 313-3 is made of copper, the rotating rod 313-3 can freely rotate around the axis of the central column 313-1, the movable push rod 5 is used for driving the rotating rod 313-3 to rotate, when media in the capillary 2 are not heated to expand, the rotating rod 313-3 is separated from the inlet terminal 311 and the outlet terminal 312, after the media in the capillary 2 are heated to expand, the rotating rod 313-3 slowly rotates, and when a certain expansion threshold is reached, the rotating rod 313-3 enables the inlet terminal 311 to be communicated with the outlet terminal 312. When the incoming line terminal 311 and the outgoing line terminal 312 are conducted, the coil of the contactor 9 is electrified, the normally closed contact of the contactor 9 is disconnected, and the heating plate 4 stops.
Further, the movable push rod 5 comprises a sleeve 51 and a push rod 52, the push rod 52 is inserted into the sleeve 51, and the push rod 52 is in contact with the inner wall of the sleeve 51; the sleeve 51 is communicated with the capillary tube 2, the push rod 52 is connected with the rotating rod 313-3 through a sliding slot and an insert rod, the sliding slot is connected with the outer wall of the rotating rod 313-3, the insert rod is connected to the push rod 52, and the insert rod is inserted into the sliding slot.
The working principle of the movable push rod 5 is the same as that of the injector, after the medium in the sleeve 51 expands, the push rod 52 is pushed to extend, and when the medium in the sleeve 51 contracts, the push rod 52 retracts due to the action of negative pressure.
Furthermore, conductive balls 313-4 are disposed at two ends of the rotating rod 313-3, and conductive ball receiving grooves for matching with the conductive balls 313-4 are disposed on the incoming line terminal 311 and the outgoing line terminal 312.
The purpose of the conductive ball 313-4 is to increase the contact area, and the contact area between the conductive ball 313-4 and the conductive ball receiving groove is large, so that the poor contact condition caused by point-surface contact or point-point contact is avoided.
Furthermore, a protective cover 33 is arranged on the base 32, the protective cover 33 is connected with the base 32 through bolts, and a threading groove 6 and a movable push rod adapting groove 7 are arranged on the side wall of the protective cover 33. The threading groove 6 is used for a reserved notch for threading a wire, and the movable push rod adapting groove 7 is used for a reserved notch which is arranged by penetrating the movable push rod 5.
Further, the movable push rod 5 is fixed at the movable push rod adapting groove 7 through a fixing plate 8.
The working principle of the whole device is as follows:
the temperature control mechanism 3 comprises a trigger switch 31, a base 32 and a protective cover 33; the trigger switch 31 includes an incoming terminal 311, an outgoing terminal 312, and a switch-on tab 313; the connecting piece 313 comprises a central column 313-1, a bearing 313-2, a rotating rod 313-3 and a conductive ball 313-4;
the rotating rod 313-3 can freely rotate around the axis of the central column 313-1, and the movable push rod 5 is used for driving the rotating rod 313-3 to rotate; when the medium in the capillary 2 is not heated to expand, the rotating rod 313-3 is separated from the inlet terminal 311 and the outlet terminal 312, when the medium in the capillary 2 is heated to expand, the rotating rod 313-3 slowly rotates, and when a certain expansion threshold is reached, the rotating rod 313-3 enables the inlet terminal 311 and the outlet terminal 312 to be conducted; when the incoming line terminal 311 and the outgoing line terminal 312 are conducted, the coil of the contactor 9 is electrified, the normally closed contact of the contactor 9 is disconnected, and the heating plate 4 stops.
The above process realizes the on-off of the trigger switch 31, thereby realizing the control of the start and stop of the heating plate 4 by the principle of expansion with heat and contraction with cold.
Claims (8)
1. A temperature control device for a reaction furnace is characterized in that: the device comprises a temperature sensing bulb (1) arranged beside a heating plate (4) of a reaction furnace, wherein the temperature sensing bulb (1) is communicated with a capillary tube (2), the capillary tube (2) is communicated with a temperature control mechanism (3), and the temperature control mechanism (3) controls the on-off of a power supply of the heating plate (4) by sensing the pressure change in the capillary tube (2).
2. The reaction furnace temperature control apparatus according to claim 1, characterized in that: the temperature control mechanism (3) comprises a trigger switch (31), and the trigger switch (31) is connected with a coil of the contactor (9) in series; a normally closed contact of the contactor (9) is connected with the heating sheet (4) in series, and the wire inlet side of the normally closed contact of the contactor (9) is used for being connected with a heating power supply;
the trigger switch (31) is provided with an incoming terminal (311) and an outgoing terminal (312), wherein the incoming terminal (311) is used for connecting a control power live wire; the trigger switch (31) further comprises a connection piece (313), and the connection piece (313) is used for realizing connection or disconnection of the incoming line terminal (311) and the outgoing line terminal (312).
3. The reaction furnace temperature control apparatus according to claim 2, characterized in that: an incoming terminal (311) and an outgoing terminal (312) are mounted on the base (32).
4. The reaction furnace temperature control apparatus according to claim 3, characterized in that: the connecting piece (313) comprises a central column (313-1), the central column (313-1) is installed on the base (32) through a bearing (313-2), the central column (313-1) is connected with the rotating rod (313-3), and the rotating rod (313-3) is a conductor; the rotating rod (313-3) rotates so as to realize the connection or disconnection of the incoming line terminal (311) and the outgoing line terminal (312);
one end of the rotating rod (313-3) is connected with the movable push rod (5) through a sliding slot and an inserting rod, and the movable push rod (5) is communicated with the capillary tube (2); the movable push rod (5) is used for sensing the pressure change of the capillary tube (2) so as to drive the rotating rod (313-3) to rotate; the movable push rod (5) is an insulator.
5. The reaction furnace temperature control apparatus according to claim 4, characterized in that: the movable push rod (5) comprises a sleeve (51) and a push rod (52), the push rod (52) is inserted into the sleeve (51), and the push rod (52) is in contact with the inner wall of the sleeve (51); the sleeve (51) is communicated with the capillary tube (2), the push rod (52) is connected with the rotating rod (313-3) through a sliding slot and an inserted rod, the sliding slot is connected to the outer wall of the rotating rod (313-3), the inserted rod is connected to the push rod (52), and the inserted rod is inserted into the sliding slot.
6. The reaction furnace temperature control apparatus according to claim 4 or 5, characterized in that: conductive balls (313-4) are arranged at two ends of the rotating rod (313-3), conductive ball accommodating grooves are formed in the wire inlet terminal (311) and the wire outlet terminal (312), and the conductive ball accommodating grooves are used for being matched with the conductive balls (313-4).
7. The reaction furnace temperature control apparatus according to any one of claims 4 or 5, characterized in that: a protective cover (33) is arranged on the base (32), the protective cover (33) is connected with the base (32) through bolts, and a threading groove (6) and a movable push rod adapting groove (7) are formed in the side wall of the protective cover (33).
8. The reaction furnace temperature control apparatus according to claim 7, characterized in that: the movable push rod (5) is fixed at the position of the movable push rod adapting groove (7) through a fixing plate (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921605228.8U CN210428217U (en) | 2019-09-25 | 2019-09-25 | Temperature control device for reaction furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921605228.8U CN210428217U (en) | 2019-09-25 | 2019-09-25 | Temperature control device for reaction furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210428217U true CN210428217U (en) | 2020-04-28 |
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ID=70367645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921605228.8U Active CN210428217U (en) | 2019-09-25 | 2019-09-25 | Temperature control device for reaction furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210428217U (en) |
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2019
- 2019-09-25 CN CN201921605228.8U patent/CN210428217U/en active Active
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Address after: 66-2 No. 443007 Hubei city of Yichang province located in Xiaoting District Road Patentee after: Hubei HuiFu nano materials Co., Ltd Address before: 443007 66-2, Lanting Avenue, Lanting District, Yichang City, Hubei Province Patentee before: YICHANG HUIFU SILICON MATERIAL Co.,Ltd. |