CN203420205U - Electrical heating rod bank for emulsified asphalt tank of asphalt distribution paver - Google Patents
Electrical heating rod bank for emulsified asphalt tank of asphalt distribution paver Download PDFInfo
- Publication number
- CN203420205U CN203420205U CN201320530973.7U CN201320530973U CN203420205U CN 203420205 U CN203420205 U CN 203420205U CN 201320530973 U CN201320530973 U CN 201320530973U CN 203420205 U CN203420205 U CN 203420205U
- Authority
- CN
- China
- Prior art keywords
- heating rod
- heating
- rod
- electrically heated
- group
- 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 - Lifetime
Links
Images
Landscapes
- Road Paving Machines (AREA)
Abstract
The utility model discloses an electrical heating rod bank which is used in an emulsified asphalt tank of an asphalt distribution paver and used for realizing the heating and heat reservation functions of the emulsified asphalt material in the tank. The electrical heating rod bank comprises a junction box [1], a connecting flange [2], an internal-thread short steel tube [3], a temperature switch [4] and a heating rod body [5], wherein the junction box [1] is connected with the connecting flange [2] through a bolt; the internal-thread short steel tube [3] is welded at the center of the connecting flange [2]; the temperature switch [4] is mounted at the center of the heating rod bank through the internal-thread short steel tube [3]; the heating rod body [5] is divided into nine circular heating rods which are all U-shaped and are evenly welded on the connecting flange [2]. The electrical heating rod bank meets the requirements of the heating power of a large-capacity tank, and also realizes flexible temperature rise by reducing the power of one single heating rod, and consequently, overhigh short-time heat generation quantity can be avoided; in the meantime, the temperature switch is integrated inside the electrical heating rod bank, and is capable of independently controlling the start and stop of the electrical heating rod bank to function in preventing local overheating.
Description
Technical field
The utility model relates to paver field, particularly a kind of pitch sprinkling paver mulseal tank heater.
Background technology
Pitch sprinkling paver is a kind of modified emulsifying asphalt is synchronizeed spread and paved pavement construction machinery with bituminous mixture of realizing, and has and store the tank body that mulseal is used on it, and volume is liter more than 2000.Emulsified bituminous materials generally need heat and remain at 60-70 ℃ of temperature and carries out spraying operation, and the benefit of constructing at this temperature has 2 points, and the one, viscosity is low, easily spray, and the 2nd, be sprayed onto fast, the high infiltration of de-emulsification speed behind ground; Emulsified bituminous materials can not contact more than 100 ℃ high temperature before sprinkling, if contact under this high temperature, mulseal can breakdown of emulsion solidifies, and not only cannot spray, even can blocking pipe when serious, damage equipment;
In the past, pitch sprinkling paver adopted conduction oil technology to be incubated material in mulseal tank more, its principle be by heating conduction oil, by the heat of oil body contactless be transmitted in mulseal tank.This technology cannot regulate temperature in asphalt tank in real time, only can carry out limited insulation to the existing temperature of material; And the method needs the extra parts such as conduction oil casing, hot oil heater, pump and pipeline that increase, and causes difficult arrangement, has taken limited space, make unitary construction become complicated, and cost is higher;
In addition, this kind of equipment also adopted heating and the insulation that realizes material in asphalt tank by the method for gas heating, by arrange combustion pipe in asphalt tank, the heat of fuel gas buring was passed to emulsified bituminous materials.The method of this heating and insulation easily produces the inequality of being heated, and particularly the mulseal near combustion pipe is subject to the damage of high temperature breakdown of emulsion, and the energy utilization rate of gas heating is low, not environmental protection.
Summary of the invention
The technical problem to be solved in the present invention is: the specific (special) requirements for emulsified bituminous materials to heating-up temperature, and the deficiency of existing mode of heating, a kind of Novel electric heating rod group is provided, to emulsified bituminous materials Direct Contact Heating, when guaranteeing that large capacity tank body heating needs, can avoid that calorific value is excessive in short-term, prevent hot-spot.
The utility model is by the following technical solutions:
A kind of electrically heated rod group for pitch sprinkling paver mulseal tank, it is characterized in that: this electrically heated rod group comprises junction box 1, adpting flange 2, internal thread short steel pipes 3, temperature switch 4, heating barred body 5 and clip 6, wherein junction box 1 is connected with adpting flange 2, internal thread short steel pipes 3 is fixed on the center of adpting flange 2, temperature switch 4 is arranged on heating rod Zu center by internal thread short steel pipes 3, heating barred body 5 consists of U-shaped heating rod, U-shaped heating rod two terminated lines, and through adpting flange 2, be connected with junction box respectively, the curved end of U-shaped heating rod is fixed by clip, temperature switch 4 is contact normally closed type, can set the temperature of cut-off point, and it is connected with heating control circuit.
In heating barred body 5, the number of U-shaped heating rod is 3 multiple, and the power of heating rod is identical.
U-shaped heating rod is divided into three groups, and the heating rod in every group is connected in parallel, and every group of wiring is connected with one of three-phase ac power supply in junction box 1.
When in heating barred body 5, U-shaped heating rod reaches heat balance, barred body surface temperature is on average at 90 ℃.
Beneficial effect of the present invention:
(1) electrically heated rod group of the present invention is placed in tank body, and with emulsified bituminous materials Direct Contact Heating, heat transfer efficiency is high, energy conservation, environmental protection.
(2) adopt the Novel electric heating rod group of nine one group, by electricity consumption three-phase equilibrium structure, the design of heating rod length and power ratio, when guaranteeing that large capacity tank body heating needs, reduced the power of single heating rod, avoid that calorific value is excessive in short-term, realized the flexible temperature rise of mulseal.
(3) the inner integrated temperature switch of electrically heated rod group, can control separately the start and stop of heating rod group, plays the effect that prevents hot-spot.
(4) electrically heated rod group is simple in structure, easy to install, and safety and stability, utilizes electric energy heating, and the feature of environmental protection is good.
Accompanying drawing explanation
Fig. 1 is electrically heated rod group front view;
Fig. 2 is that electrically heated rod group A is to sectional view;
Fig. 3 is that electrically heated rod group B is to sectional view.
In figure: 1, junction box; 2, adpting flange; 3, internal thread short steel pipes; 4, temperature switch; 5, heating barred body; 6, clip;
The specific embodiment
Below in conjunction with accompanying drawing, the application is described in further detail:
As depicted in figs. 1 and 2, this electrically heated rod group comprises junction box 1, adpting flange 2, internal thread short steel pipes 3, temperature switch 4, heating barred body 5, clip 6, together with wherein junction box 1 is bolted with adpting flange 2, internal thread short steel pipes 3 is welded on the center of adpting flange 2, and temperature switch 4 is arranged on heating rod Zu center by internal thread short steel pipes 3; Heating barred body 5 is that circular U-shaped heating rod forms by nine cross sections, and wiring is drawn at the two ends of U-shaped heating rod; The power of every U-shaped heating rod equates.
As shown in Figure 3, the U-shaped heating rod two ends of heating barred body 5 are passed respectively adpting flange 2 and are welded together with it, and the curved end of the U-shaped heating rod of heating barred body 5 is fixing by clip 6; One side in junction box 1 has 18 Binding post/studs to be connected with 18 wiring of heating barred body 5, and every three heating rods form one group, adopt parallel way, nut crimping wiring; Nine heating rods form three groups altogether, and the wiring of three groups is electrically connected to AC three-phase in junction box 1, and every group is used an electricity mutually wherein, and because every group of load is consistent, whole heating barred body 5 load electricity consumptions form three-phase equilibriums.The design of this electricity consumption three-phase equilibrium, has protected generating equipment, reaches the object of Electrical Safety; meanwhile, guaranteeing, under the prerequisite of large capacity tank body heating power demand, to reduce the power of single heating rod; avoid that calorific value is large in short-term, realized the flexible temperature rise of mulseal.
So-called flexible temperature rise is special to be proposed the sensitiveness of temperature for emulsified bituminous materials, refers to the temperature uphill process of the non-violent formula of liquid in tank body, fluent material is not caused to any damage and fracture.
The flexible temperature rise of electrically heated rod group of the present invention is mainly reflected in following two aspects: on the one hand, time when single heating rod reaches heat balance is shorter, and barred body surface temperature is stabilized in 90 ℃ of left and right very soon; On the other hand, the contact area of whole electrically heated rod group and liquid is large, and margin of power foot, by the interchange of heat between barred body and liquid, realizes the rising of fluid temperature.
Single heating rod housing is stainless steel, the corrosion of resistance to mulseal, and there is resistive heater inside, fill insulant between resistance wire and housing, heater strip is drawn by wiring.
The length of all single heating rods and the ratio of power are through calculating in detail and great many of experiments, and while making single heating rod reach heat balance, barred body surface temperature is on average 90 ℃ of left and right.Its method is as follows:
Total heating power is sufficient, meets 90 ℃ of demands with interior heating and insulation of large capacity tank body.Power function formula can be expressed as:
P=f(V，T，t)
Wherein P is power, and unit is kw; V is tank body volume, and unit is m
3; T is temperature rise, unit ℃; T is the temperature rise time, the min of unit.
Owing to being Direct Contact Heating, for preventing that heating rod surface temperature from surpassing 100 ℃, general power need be dispersed into some heating rods, form the form of heating rod group.
The principle that heating rod quantity in heating rod group is calculated: one, must be 3 multiple, because use three-phase alternating current electrical heating, need to guarantee electricity consumption three-phase equilibrium; Two, watt level must be consistent, prevents that amount of localized heat is inhomogeneous, also meets three-phase coulomb balance; Three, the length of single heating rod and power ratio need guarantee that casing surface temperature is 90 ℃ of left and right;
Determining of the length of single heating rod and power ratio, available following functional expression represents:
L=f(P’，T’，t’)
Wherein L is length, the mm of unit; P ' is the power of single heating rod, and unit is kw; When T ' reaches heat balance for barred body, the temperature on barred body surface, unit ℃; T ' reaches the thermally equilibrated time, the min of unit for barred body;
After theoretical calculating, then pass through experimental test, determine length and power that heating rod is final; Such nine heating rods combine, and can reach heating and the function being incubated, and are unlikely to again to make the emulsified bituminous materials that touches heating rod to meet high temperature damage.
The temperature switch 4 of installing at electrically heated rod Zu center, can measure near the temperature of electrically heated rod group switching centre point in real time, can control separately the start and stop of electrically heated rod group, plays the effect that prevents hot-spot; Temperature switch 4 is contact normally closed type, and in access heating control circuit, temperature switch can be set by mechanical knob the temperature of cut-off point;
After heating starts, temperature switch 4, in normally off, does not affect heating work; When temperature switch 4 detects the setting value that heating rod group switching centre point temperature reaches temperature switch, no matter whether now heating work is carried out, temperature switch can disconnect heating control circuit, thereby heating work is stopped, protection emulsified bituminous materials.
Claims (7)
1. the electrically heated rod group for pitch sprinkling paver mulseal tank, it is characterized in that: this electrically heated rod group comprises junction box [1], adpting flange [2], internal thread short steel pipes [3], temperature switch [4], heating barred body [5] and clip [6], wherein junction box [1] is connected with adpting flange [2], internal thread short steel pipes [3] is fixed on the center of adpting flange [2], temperature switch [4] is arranged on electrically heated rod Zu center by internal thread short steel pipes [3], heating barred body [5] consists of U-shaped heating rod, U-shaped heating rod two terminated lines, and through adpting flange [2], be connected with junction box respectively, the curved end of U-shaped heating rod is fixing by clip [6], temperature switch [4] is contact normally closed type, can set the temperature of cut-off point, and it is connected with heating control circuit.
2. electrically heated rod group according to claim 1, in heating barred body [5], the number of U-shaped heating rod is 3 multiple, and the power of heating rod is identical.
3. electrically heated rod group according to claim 2, U-shaped heating rod is divided into three groups, and the heating rod in every group is connected in parallel, and every group of wiring is connected with one of three phase mains in junction box [1].
4. electrically heated rod group according to claim 1, in heating barred body [5], the number of U-shaped heating rod is 9, and the power of heating rod is identical.
5. electrically heated rod group according to claim 4, U-shaped heating rod is divided into three groups, and the heating rod in every group is connected in parallel, and every group of wiring is connected with one of three-phase ac power supply in junction box [1].
6. according to the electrically heated rod group described in claim 3 or 5, when in heating barred body [5], U-shaped heating rod reaches heat balance, barred body surface temperature is on average at 90 ℃.
7. electrically heated rod group according to claim 6, U-shaped heating rod housing is stainless steel, the corrosion of resistance to mulseal, there is resistive heater inside, fill insulant between resistance wire and housing, heater strip is drawn by wiring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320530973.7U CN203420205U (en) | 2013-08-27 | 2013-08-27 | Electrical heating rod bank for emulsified asphalt tank of asphalt distribution paver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320530973.7U CN203420205U (en) | 2013-08-27 | 2013-08-27 | Electrical heating rod bank for emulsified asphalt tank of asphalt distribution paver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203420205U true CN203420205U (en) | 2014-02-05 |
Family
ID=50019305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320530973.7U Expired - Lifetime CN203420205U (en) | 2013-08-27 | 2013-08-27 | Electrical heating rod bank for emulsified asphalt tank of asphalt distribution paver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203420205U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10889945B2 (en) | 2018-10-10 | 2021-01-12 | Caterpillar Paving Products Inc. | Emulsion heating control for a paving machine |
-
2013
- 2013-08-27 CN CN201320530973.7U patent/CN203420205U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10889945B2 (en) | 2018-10-10 | 2021-01-12 | Caterpillar Paving Products Inc. | Emulsion heating control for a paving machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103437265B (en) | A kind of electrically heated rod group for pitch sprinkling paver mulseal tank | |
| CN101663543B (en) | System and method for improved heating of fluid | |
| CN107062355A (en) | Electric heat storage boiler auxiliary thermal power plant thermal power plant unit depth peak regulation system | |
| CN105743047A (en) | Deicing system for high-voltage power transmission line | |
| CN203615574U (en) | Electronic water heater | |
| CN203420205U (en) | Electrical heating rod bank for emulsified asphalt tank of asphalt distribution paver | |
| CN102654308A (en) | Phase-change heat storage type electric water heater | |
| CN101876460B (en) | Thermal storage and energy accumulation conversion device | |
| CN203656461U (en) | Heating device for oil delivery pipeline | |
| CN202139039U (en) | Heating device for oiling machine | |
| CN104420411B (en) | A kind of thermostatically-controlled equipment and control method of pitch sprinkling paver emulsified asphalt tank | |
| CN202581799U (en) | Phase-change thermal-storage type electric water heater | |
| CN202035168U (en) | Offshore heavy oil on-line heating pipe nipple | |
| CN205980339U (en) | Outer hot type water heater and watering device overflow | |
| CN101123832A (en) | An electromagnetic induction thermal pipe for instantly heating electrical heater | |
| CN202488777U (en) | Three-phase electric heater | |
| CN203420196U (en) | Constant temperature control device of emulsified asphalt tank of asphalt distributing paver | |
| KR101445264B1 (en) | Three-phase ptc heating cable maintaining phase balance | |
| CN206196080U (en) | Electric heater | |
| CN207438700U (en) | A kind of dry-laid formula carbon fiber heating module | |
| CN204513735U (en) | Intermediate frequency induction heating device | |
| CN201814407U (en) | Anti-creepage type drinking fountain | |
| CN203964337U (en) | The fluid preheating device of snake pipe | |
| CN215924854U (en) | Asphalt heating system | |
| CN202195596U (en) | Preheating instant-heating type electric water heater |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140205 |