CN203355749U - Low-pressure test box - Google Patents
Low-pressure test box Download PDFInfo
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- CN203355749U CN203355749U CN 201320378320 CN201320378320U CN203355749U CN 203355749 U CN203355749 U CN 203355749U CN 201320378320 CN201320378320 CN 201320378320 CN 201320378320 U CN201320378320 U CN 201320378320U CN 203355749 U CN203355749 U CN 203355749U
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Abstract
The utility model relates to a low-pressure test box, which includes a box body, a heating system, a refrigerating system, a vacuum system, an electrical cabinet and an electric system, wherein a box door is arranged on the front end surface of the box body, and is connected with the box body in a sealing manner; the heating system and a vacuum chamber are arranged at the inner upper part of the box body; an adjustable sample stand is mounted inside the vacuum chamber; the refrigerating system is arranged at the inner lower part of the box body; the heating system and the refrigerating system are in line connection with the electric system respectively; a wind circulation system is arranged inside the box body, and includes a circulating motor and a centrifugal wind wheel; the circulating motor is mounted outside the vacuum chamber; the centrifugal wind wheel is mounted inside the vacuum chamber; the output end of the circulating motor is connected with the centrifugal wind wheel; the circulating motor is connected with the vacuum chamber in a sealing manner, and is in line connection with the electric system. According to the utility model, the temperature inside the box is comparatively uniform, and the low-pressure test box is more convenient to operate, is simple and high in safety reliability, and greatly improves the automation degree.
Description
[technical field]
The utility model relates to sample vacuum testing instrument technical field, specifically a kind of low pressure test chamber.
[background technology]
At present, the application of vacuum technique is more and more extensive, and as the every field such as Aero-Space, industrial processes, making food are useful, but the manufacturing level of each company is not quite similar, it is low that the product quality of manufacturing also has height to have, and mainly has following problem:
1. temperature-controlled precision is not high, and the temperature control scope is little;
2. pressure controling mode is more extensive, and pressure gos up than very fast, and fluctuation is large;
3. do not establish air circulating system in case, in normal pressure and low pressure nowel, temperature homogeneity is bad;
4. outward appearance is single, and automaticity is not high, the programme-control inconvenience.
[utility model content]
The purpose of this utility model is exactly will solve above-mentioned deficiency and a kind of low pressure test chamber is provided, not only the temperature inside the box is more even, even in the low pressure duty, still can effectively make rarefied air in case be circulated, and more convenient to operate succinct, greatly improved automaticity, safe and reliable.
Design for achieving the above object a kind of low pressure test chamber, comprise casing, heating system, refrigeration system, vacuum system, regulator cubicle and electrical system, described casing front end face is provided with chamber door, described chamber door is connected with box sealing, described casing internal upper part is provided with heating system and vacuum chamber, adjustable specimen holder is installed in described vacuum chamber, in described casing, bottom is provided with refrigeration system, described heating system, refrigeration system is the connection electrical system respectively, be provided with air circulating system in described casing, described air circulating system comprises circulation motor and centrifugal wind wheel, described circulation motor is arranged on outside vacuum chamber, described centrifugal wind wheel is arranged in vacuum chamber, described circulation motor output end is connected with centrifugal wind wheel, described circulation motor and vacuum chamber are tightly connected, described circulation motor connection electrical system.
The output of described circulation motor is connected with centrifugal wind wheel by major axis, and described circulation motor adopts magnetic fluid turning cylinder and vacuum chamber to be tightly connected.
Be provided with pressure sensor and vacuum deflation valve in described vacuum chamber, described pressure sensor, vacuum deflation valve connection electrical system.
Described chamber door is connected with box sealing by silicon bi-layer rubber, and heater strip is equipped with at the doorframe place of described chamber door surrounding and chamber door, and described chamber door is provided with rotary-type door handle.
Described refrigeration system comprises compressor, condenser and evaporimeter, and described compressor, condenser, evaporimeter are arranged on respectively bottom in casing, described compressor connection electrical system.
Described heating system comprises bare wire formula fast electric heated filament, and described bare wire formula fast electric heated filament is arranged on the inwall of casing internal upper part, and described bare wire formula fast electric heating silk thread road connects electrical system.
Described bare wire formula fast electric heated filament surface is provided with temperature sensor, and described temperature sensor scheme connects electrical system.
The side of described casing connects regulator cubicle and touch-screen, described regulator cubicle front is provided with control panel, described electrical system is arranged on the rear side of control panel, described electrical system is by the button control zone on connection touch-screen, control panel, described button control zone is provided with manual charge valve, and below, described regulator cubicle front is provided with total power switch.
Described casing comprises outer container and interior case, and described outer container adopts steel plate to make, and described interior case adopts corrosion resistant plate to make, and the bearing course outer surface of described interior case is provided with strengthening course, and described interior chamber interior wall is provided with heat-insulation layer.
Described vacuum system comprises vavuum pump, and described vavuum pump is arranged on the regulator cubicle internal upper part, described vavuum pump connection electrical system.
The utility model compared with the existing technology, has following advantage:
1. the circulation motor is connected with interior case centrifugal wind wheel and adopts magnetic fluid to be sealed, and sealing property is very high, durable in use, can, as the conventional seals axle, along with the increase of the duration of runs, not exist poor sealing that phenomenon is arranged;
2. touch screen operation, temperature-controlled precision is high, more convenient to operate succinct, and has network function, many bench teats can be tested to the equipment collection and be monitored on a computer display screen, has greatly improved automaticity;
3. professional Duct design, guarantee that the temperature inside the box is quite even, even in the low pressure duty, still can effectively make rarefied air in case be circulated, and reaches the uniformity of temperature;
4. adopt micropump regulating box internal pressure, more accurately controlled pressure, select domestic Special vacuum pressure sensor, vacuum instrumentation etc., guarantees the authenticity of pressure, reduces to greatest extent the fault rate of equipment, guarantees the high reliability of equipment test;
5. main guidance panel, adopt the cantilevered mounting means, brief generous, user-friendly to greatest extent;
6. people-oriented, equipment is placed above the other things to personal safety, and the band creepage protection function, the lack of water warning function, overheat protection function etc., guarantee that equipment, when any fault occurring, can protect shutdown, can not damage the person.
[accompanying drawing explanation]
Fig. 1 is Facad structure schematic diagram of the present utility model;
Fig. 2 is side structure schematic diagram of the present utility model;
Fig. 3 is top structure schematic diagram of the present utility model;
In figure: 1, vavuum pump 2, centrifugal wind wheel 3, touch-screen 4, rotary-type door handle 5, refrigeration system 6, circulation motor 7, magnetic fluid turning cylinder 8, control panel 9, regulator cubicle 10, total power switch 11, casing 12, chamber door 13, vacuum chamber 14, adjustable specimen holder.
[specific embodiment]
Below below in conjunction with accompanying drawing, the utility model being done, further illustrate:
As shown in drawings, the utility model comprises: casing 11, heating system, refrigeration system 5, vacuum system, regulator cubicle and electrical system, the casing front end face is provided with chamber door 12, chamber door is connected with box sealing, the casing internal upper part is provided with heating system and vacuum chamber 13, adjustable specimen holder 14 is installed in vacuum chamber, in casing, bottom is provided with refrigeration system, heating system, refrigeration system is the connection electrical system respectively, be provided with air circulating system in casing, air circulating system comprises circulation motor 6 and centrifugal wind wheel 2, the circulation motor is arranged on outside vacuum chamber, centrifugal wind wheel is arranged in vacuum chamber, the output of circulation motor is connected with centrifugal wind wheel by major axis, the circulation motor adopts magnetic fluid turning cylinder 7 and vacuum chamber to be tightly connected, circulation motor connection electrical system, be provided with pressure sensor and vacuum deflation valve in vacuum chamber, pressure sensor, vacuum deflation valve connection electrical system, chamber door is connected with box sealing by silicon bi-layer rubber, and heater strip is equipped with at the doorframe place of chamber door surrounding and chamber door, and chamber door is provided with rotary-type door handle 4.
In the utility model, refrigeration system comprises compressor, condenser and evaporimeter, and compressor, condenser, evaporimeter are arranged on respectively bottom in casing, compressor connection electrical system, heating system comprises bare wire formula fast electric heated filament, and bare wire formula fast electric heated filament is arranged on the inwall of casing internal upper part, and bare wire formula fast electric heating silk thread road connects electrical system, bare wire formula fast electric heated filament surface is provided with temperature sensor, and temperature sensor scheme connects electrical system, the side of casing connects regulator cubicle 9 and touch-screen 3, the regulator cubicle front is provided with control panel 8, electrical system is arranged on the rear side of control panel, electrical system comprises temperature controller, breaker, contactor, relay, power controller, the empty burning prevents switch, the overpressure protection switch, overheat switch, earth leakage circuit-breaker, the circuit fuse, buzzer, the ground protection terminal, Overtemp. protector, electrical system is by the connection touch-screen, button control zone on control panel, the button control zone is provided with manual charge valve, below, regulator cubicle front is provided with total power switch 10, casing comprises outer container and interior case, and outer container adopts steel plate to make, and interior case adopts corrosion resistant plate to make, and the bearing course outer surface of interior case is provided with strengthening course, and interior chamber interior wall is provided with heat-insulation layer, vacuum system comprises vavuum pump 1, and vavuum pump is arranged on the regulator cubicle internal upper part, vavuum pump connection electrical system.
Low pressure test chamber described in the utility model mainly is comprised of panel beating, refrigeration system, heating system, electrical control, these several parts of vacuum system, and its performance indications are, temperature range-70 ℃～150 ℃; Temperature fluctuation ± 0.5 ℃; Temperature deviation ± 2.0 ℃ (under normal pressure); Heating rate (under normal pressure)-70 ℃～+ 150 ℃≤60 minutes (can design as required); Rate of temperature fall (under normal pressure) 20 ℃～-70 ℃≤70 minutes (can design as required).
In the utility model, chamber door is single open-door, and the surrounding of chamber door frame and chamber door is equipped with heater strip, condensation frosting while preventing low-temperature test; The rotating disc type door handle; Special strong hinge; Interior box lumber matter is that after bearing course adopts thickening corrosion resistant plate (SUS304) full weld, outer surface carries out reinforcement again, guarantees that, under the low pressure state, casing can not deform, and keeps good air-tightness; In interior case trial zone, adopt the stainless steel optic panel to be modified, elegant in appearance; The outer container material is the steel plate baking vanish, can be roasted into as required different colours, guarantees the aesthetic property of outer container.The insulation material is that the high-quality super glass wool of 100mm adds the insulation of polyamine ester foaming.Heating system is special-purpose bare wire formula fast electric heated filament; The heating control mode is: controller is through the PID computing, and output signal exports heater to through noncontacting switch (SSR), the power of dynamic adjustments heating tube, thus reach the purpose of accurate temperature controlling.Temperature sensor adopts high accuracy stainless steel PT-100 temperature sensor.Adopt high-quality import brand motor and stainless steel strong cyclic wind wheel in supply air system.
In vacuum system of the present utility model, the chamber door sealing: the silicon bi-layer rubber seal, guarantee that chamber door has the casing close contact, reduces the leak rate of casing to greatest extent.Motor seal: motor is arranged on outside vacuum chamber, by major axis, introduces vacuum chamber and drives the rotation of centrifugal wind wheel; The motor major axis adopts New Magnetic Field Controlled Fluid Sealing driving member to introduce vacuum chamber, guarantees sealing property and reliable transmission, and the magnetic fluid flange seal is broken through the drawback of traditional sealing rapid wear.Vavuum pump: associated mode sliding vane rotary vacuum pump vavuum pump.Vacuum measurement: the Special vacuum pressure sensor, the pressure signal of measurement can be become to the signal that send into 4～20mA, the input control device is controlled.The vacuum control mode: controller is by the signal gathered number, through operation amplifier, with setting value, compare, output signal is controlled the start and stop of vavuum pump, and the action of controlling the vacuum deflation valve, if hypotony,, automatically to the casing fine setting of exitting, pressure is controlled in the deviation range of requirement the most at last.The vacuum deflation mode: the automatic deflation mode, by the internal case of vacuum deflation magnetic valve, inflated; Panel is provided with manual charge valve, is convenient to fast aeration, reaches while needing to open chamber door, and manually internally case is inflated.
Controller of the present utility model is, setting means: but program and definite value are set; Memory size: 1000 nondeclarative memories, 100 circulations of every group of 100 step, 10 groups of program chains functions; Setting/indication range: temperature conditions: 100～200 ℃ of PT100: –, pressure condition: 0-1000Hpa; Temperature: 0.1 ℃, pressure: 0.1hpa (hundred handkerchiefs); Time: 1 minute.
Menu display function of the present utility model is that employing man-machine interaction mode, adopt touch input, control; Humiture is set test value and is shown; Temperature, pressure setting (SV) actual (PV) value directly show; Can show the performing a programme number, section time, remaining time and cycle-index, show the duration of runs; Program editing and graph curve show, tool real-time display program curve execution function; Fixed point or program behavior state show; Screen can be done adjustment backlight, can set the time backlight; The screen display defencive function can be done regularly or manual-lock is set; Program copy, COPY, linkage function, editor's experiment title supervisor editting function; There is self-diagnostic function, prompting failure cause and processing method; Data acquisition, remittance abroad, check graphing capability.
Program capacity of the present utility model and control function are that spendable procedure quantity: maximum 1000 groups, 1 program can combine by 1～100 section time; Spendable memory capacity: 1000*100SEGMENTS; Can repeat order: each order can reach 100 times; The program slope is set and can be set by time shaft; Can set between program to connect and use; It is simple to operate that the talk formula is adopted in the making of program; There is editor, remove the functions such as insertion; (can control determinand ON/OFF action) controlled in 2 groups of time signal outputs of tool; Having 6 groups of pid parameters sets; Program has the jumping file in carrying out, and keeps function; There is the outage nondeclarative memory, automatically start after telegram in reply and the performing a programme function that continues.
Communication interface of the present utility model is, can show curve, and data acquisition has reservation and starts and shut-off function, there is the date, the time adjusting function, button and picture locking (LOCK) function, can, as monitoring and remote control system, possess 1 USB interface, 1 LAN interface.
Other functions of the present utility model are, but playback history data and change into the formatted files such as ACCESS or EXCEL; Historical data; Controller can be stored 300 days historical data (under 24 hours running statuses), can in the machine, directly check.Long-distance centralized control is, by network interface, the operation conditions of many machines can be shown and record on same computer, realizes centralized Control; Can be by direct and two-way program editing and the data storing uploaded of LAN interface, without the USB flash disk unloading.
Defencive function of the present utility model is, a. power controller (power of control appliance heating); B. empty the burning prevents switch (preventing that heater, humidifier are in the situation that without the circulated air dry combustion method); C. compressor overpressure protection switch (preventing that compressor pressure is too high or too low); D. overheat of compressor protection switch (preventing that compressor temperature is too high); E. compressor overcurrent protection circuit (preventing that compressor current is excessive); F. leakage switch (preventing the equipment overcurrent); G. circuit fuse (preventing short circuit); H. buzzer (audible alarm when equipment breaks down); I. ground protection terminal (prevent equipment from producing static); J. the adjustable Overtemp. protector in chamber (preventing temperature control in operating room) works alone; K. pressure goes beyond the scope, and reports to the police and shuts down (prevent pressure runaway, take out bad casing).
In refrigeration system of the present utility model, compressor adopts totally-enclosed compressor or Bitzer semi-closed compressor; Refrigeration modes is the mechanical type cascade refrigeration; Refrigerant adopts Dupont R404A and R23 environmental protection refrigerant; Condenser is the fin type air cooling way, or efficient package water cooled condenser; Evaporimeter is fin type internal thread high-efficiency evaporator; The refrigeration accessory has American-European brand, Danfoss expansion valve, filter, pressure-head switch, plate type heat exchanger etc.
The utility model is not subject to the restriction of above-mentioned embodiment; other any do not deviate from change, the modification done under Spirit Essence of the present utility model and principle, substitutes, combination, simplify; all should be equivalent substitute mode, within being included in protection domain of the present utility model.
Claims (10)
1. a low pressure test chamber, comprise casing, heating system, refrigeration system, vacuum system, regulator cubicle and electrical system, described casing front end face is provided with chamber door, described chamber door is connected with box sealing, described casing internal upper part is provided with heating system and vacuum chamber, adjustable specimen holder is installed in described vacuum chamber, in described casing, bottom is provided with refrigeration system, described heating system, refrigeration system is the connection electrical system respectively, it is characterized in that: in described casing, be provided with air circulating system, described air circulating system comprises circulation motor and centrifugal wind wheel, described circulation motor is arranged on outside vacuum chamber, described centrifugal wind wheel is arranged in vacuum chamber, described circulation motor output end is connected with centrifugal wind wheel, described circulation motor and vacuum chamber are tightly connected, described circulation motor connection electrical system.
2. low pressure test chamber as claimed in claim 1, it is characterized in that: the output of described circulation motor is connected with centrifugal wind wheel by major axis, and described circulation motor adopts magnetic fluid turning cylinder and vacuum chamber to be tightly connected.
3. low pressure test chamber as claimed in claim 1 or 2, is characterized in that: be provided with pressure sensor and vacuum deflation valve in described vacuum chamber, described pressure sensor, vacuum deflation valve connection electrical system.
4. low pressure test chamber as claimed in claim 3 is characterized in that: described chamber door is connected with box sealing by silicon bi-layer rubber, and heater strip is equipped with at the doorframe place of described chamber door surrounding and chamber door, and described chamber door is provided with rotary-type door handle.
5. low pressure test chamber as claimed in claim 4, it is characterized in that: described refrigeration system comprises compressor, condenser and evaporimeter, described compressor, condenser, evaporimeter are arranged on respectively bottom in casing, described compressor connection electrical system.
6. low pressure test chamber as claimed in claim 5, it is characterized in that: described heating system comprises bare wire formula fast electric heated filament, described bare wire formula fast electric heated filament is arranged on the inwall of casing internal upper part, and described bare wire formula fast electric heating silk thread road connects electrical system.
7. low pressure test chamber as claimed in claim 6, it is characterized in that: described bare wire formula fast electric heated filament surface is provided with temperature sensor, and described temperature sensor scheme connects electrical system.
8. low pressure test chamber as claimed in claim 7, it is characterized in that: the side of described casing connects regulator cubicle and touch-screen, described regulator cubicle front is provided with control panel, described electrical system is arranged on the rear side of control panel, described electrical system is by the button control zone on connection touch-screen, control panel, described button control zone is provided with manual charge valve, and below, described regulator cubicle front is provided with total power switch.
9. low pressure test chamber as claimed in claim 8, it is characterized in that: described casing comprises outer container and interior case, and described outer container adopts steel plate to make, and described interior case adopts corrosion resistant plate to make, the bearing course outer surface of described interior case is provided with strengthening course, and described interior chamber interior wall is provided with heat-insulation layer.
10. low pressure test chamber as claimed in claim 9, it is characterized in that: described vacuum system comprises vavuum pump, described vavuum pump is arranged on the regulator cubicle internal upper part, described vavuum pump connection electrical system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320378320 CN203355749U (en) | 2013-06-28 | 2013-06-28 | Low-pressure test box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320378320 CN203355749U (en) | 2013-06-28 | 2013-06-28 | Low-pressure test box |
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| Publication Number | Publication Date |
|---|---|
| CN203355749U true CN203355749U (en) | 2013-12-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320378320 Expired - Fee Related CN203355749U (en) | 2013-06-28 | 2013-06-28 | Low-pressure test box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203355749U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104096595A (en) * | 2014-07-28 | 2014-10-15 | 天津开发区合普工贸有限公司 | Simple, convenient, hand-operated and static type experiment device for simulating low air pressure and oxygen deficiency |
| CN104332872A (en) * | 2014-11-15 | 2015-02-04 | 国网河南省电力公司南阳供电公司 | Smart box-type substation |
-
2013
- 2013-06-28 CN CN 201320378320 patent/CN203355749U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104096595A (en) * | 2014-07-28 | 2014-10-15 | 天津开发区合普工贸有限公司 | Simple, convenient, hand-operated and static type experiment device for simulating low air pressure and oxygen deficiency |
| CN104096595B (en) * | 2014-07-28 | 2015-11-18 | 天津开发区合普工贸有限公司 | Easy manual quiet formula simulation low pressure anoxia experimental facility |
| CN104332872A (en) * | 2014-11-15 | 2015-02-04 | 国网河南省电力公司南阳供电公司 | Smart box-type substation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131225 Termination date: 20180628 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |