CN203083770U - On-line vacuum-degree detection device - Google Patents
On-line vacuum-degree detection device Download PDFInfo
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- CN203083770U CN203083770U CN 201320106977 CN201320106977U CN203083770U CN 203083770 U CN203083770 U CN 203083770U CN 201320106977 CN201320106977 CN 201320106977 CN 201320106977 U CN201320106977 U CN 201320106977U CN 203083770 U CN203083770 U CN 203083770U
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- vacuum
- circuit
- microcontroller
- plug
- sealing
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Abstract
The utility model relates to an on-line vacuum-degree detection device, which comprises a sealing plug and a detection module, wherein the sealing plug is used for detecting the vacuum degree of a vacuum device, and the detection module is used for calculating the data detected by the sealing plug. The detection module comprises a microcontroller, and the microcontroller is connected with a communication circuit and a power source circuit. The sealing plug is connected with the microcontroller through a constant current circuit, the sealing plug is connected with the microcontroller sequentially through a current sampling circuit and a first A/D (Analog to Digital) conversion circuit, and the sealing plug is also connected with microcontroller sequentially through a differential amplification circuit and a second A/D conversion circuit. The data detected by the sealing plug is amplified by the differential amplification circuit and then is converted into a digital signal, which can be identified by the microcontroller, through the second A/D conversion circuit. The microcontroller calculates a vacuum-degree value through a relationship algorithm between the detected data and the vacuum degree, accurately obtains the vacuum degree of the vacuum layer of the vacuum device, and remotely transmits the calculated vacuum-degree data to provide convenience for real-time detection.
Description
Technical field
The utility model relates to the vacuum tightness detection range of vacuum plant, is specifically related to a kind of on-line measuring device that detects the vacuum tightness of vacuum plant vacuum layer.
Background technology
Vacuum tube or vacuum tank through the production technology link to vacuum interlayer finish vacuumize after, in product preservation and use, or problems such as degasification is insufficient in the machining process, installation is improper all can cause the reduction of vacuum layer vacuum tightness because material itself is exitted.Vacuum layer reduces the heat preservation and insulation that the back directly influences vacuum pipe, the reduction of heat preservation and insulation directly causes energy resource consumption in the vacuum pipe, in use vacuum tightness can since the problem of material own or since problems such as processing technology, mounting process cause can not be long-term preservation, vacuum tightness can be gradually decline, if just lost the heat-insulation and heat-preservation effect after vacuum tightness drops to a certain degree, cause seepage, will cause the consumption that the energy is unnecessary and bring potential safety hazard.
At present the vacuum tightness that vacuum tube or vacuum tank in use can not online detection vacuum layer change and to the vacuum tightness of vacuum layer give warning in advance, information such as warning.Can only judge vacuum layer vacuum tightness by the visual inspection experience, or, can not accurately obtain the value of the vacuum tightness of vacuum layer by the whether frosting and hang spontaneous phenomenon such as water and judge whether current vacuum layer vacuum tightness has descended of pipe surface or hold-up vessel surface.
The utility model content
Goal of the invention of the present utility model is: the problem at prior art exists provides a kind of vacuum tightness on-line measuring device that can accurately obtain the vacuum tightness of vacuum plant vacuum layer.
To achieve these goals, the technical solution adopted in the utility model is:
A kind of vacuum tightness on-line measuring device comprises the sealing-plug of the vacuum tightness that is used to detect vacuum plant and is used for detection module that the detected data of described sealing-plug are carried out computing; Described detection module comprises microcontroller, and described microcontroller is connected with communicating circuit and power circuit; Described sealing-plug is connected with described microcontroller by constant current circuit; Described sealing-plug is connected with described microcontroller by current sampling circuit, an A/D change-over circuit successively; Described sealing-plug also is connected with microcontroller by differential amplifier circuit, the 2nd A/D change-over circuit successively.
Described detection module is connected with described sealing-plug and is structure as a whole with the sealing plug.
Described power circuit is the DC/DC power supply.
Be connected with the communication buffer circuit between described communicating circuit and the microcontroller.
Described communicating circuit is the data communication bus.
Described microcontroller also is connected with system indicator.
Described microcontroller also is connected with alarm switch.
Described constant current circuit is connected with voltage reference circuit, for constant current circuit provides working standard voltage.
In sum, owing to adopted technique scheme, the beneficial effects of the utility model are:
The utility model vacuum tightness on-line measuring device is by the vacuum tightness of described sealing-plug detection vacuum plant, and detection module carries out computing to the detected data of described sealing-plug again.After this device energising work, utilize the vacuum tightness detecting element of sealing-plug inside to carry out data acquisition, data analysis by the microprocessor controls in the detection module, accurately obtain the vacuum tightness of vacuum plant vacuum layer, realize online detection the vacuum tightness of vacuum plant.Data after this vacuum tightness on-line measuring device detects also can directly be carried out remote transmission by communicating circuit, are convenient to real-time detection.
Description of drawings:
Fig. 1 is the circuit block diagram of detection module among the utility model embodiment.
Fig. 2 is the structural representation of sealing-plug among the utility model embodiment.
Fig. 3 is the scheme of installation of the sealing-plug among Fig. 2.
Embodiment
Below in conjunction with accompanying drawing, the utility model is done detailed explanation.
In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
Embodiment
As shown in Figure 1, the vacuum tightness on-line measuring device of present embodiment comprises the sealing-plug of the vacuum tightness that is used to detect vacuum plant and is used for detection module that the detected data of described sealing-plug are carried out computing; Described detection module comprises microcontroller, and described microcontroller is connected with communicating circuit and power circuit; Described sealing-plug is connected with described microcontroller by constant current circuit; Described sealing-plug is connected with described microcontroller by current sampling circuit, an A/D change-over circuit successively; Described sealing-plug also is connected with microcontroller by differential amplifier circuit, the 2nd A/D change-over circuit successively.
Wherein, described detection module is connected with described sealing-plug and is structure as a whole with the sealing plug.Described power circuit is the DC/DC power supply, and the operating voltage of 5V is provided.Be connected with the communication buffer circuit between described communicating circuit and the microcontroller,, improve interference free performance.Described communicating circuit is the data communication bus, preferred data industry communication bus commonly used.Described microcontroller also is connected with system indicator, when vacuum tightness is lower than setting value, can point out warning.Described constant current circuit is connected with voltage reference circuit, for constant current circuit provides work required 2.5V reference voltage, guarantees the stability and reliability of constant current circuit work.Described microcontroller also is connected with alarm switch.Wherein, described each circuit module is existing ripe circuit component, chip or integrated circuit formation.
Referring to Fig. 2, described sealing-plug comprises the sealing-plug matrix, and described sealing-plug matrix is provided with the vacuum checking device of the vacuum tightness that is used to detect vacuum plant.Concrete, described vacuum checking device is that thermopair regulates 4.Can certainly be other elements with online vacuum detecting characteristic.Described sealing-plug matrix is a ceramic matrix 1, described ceramic matrix 1 below connects described thermopair and regulates 4, described thermopair regulate 4 be embedded in described ceramic matrix 1 in first lead be connected, the described first lead two ends stretch out in described ceramic matrix, and about in the of 1 two ends.Concrete, described first lead has four, and the part that four leads 2 stretch out in described ceramic matrix 1 lower end connects described thermopair and regulates 4.Described ceramic matrix 1 below also is provided with the temperature sensor 3 that is used to detect the temperature in the vacuum plant, and temperature sensor 3 adopts thermistor in the present embodiment.Described temperature sensor 3(thermistor) be embedded in described ceramic matrix 1 in second lead be connected.Described second lead has two, and the part that two leads 2 stretch out in described ceramic matrix 1 lower end connects described temperature sensor 3.Preferably, described ceramic matrix 1 is cylindric, and its outer surface is provided with seal groove 5.Described ceramic matrix 1 top is provided with round boss 11, and described first lead and second lead are positioned at described round boss 11 and stretch out in this round boss 11.Be embedded with wiring protective cover (figure does not show) on the described round boss 11.Concrete, ceramic matrix 1 can adapt to the high and low temperature environment as the carrier of vacuum detecting, and insulate in detecting data transmission procedure, and is noiseless to data-signal.Web member when working as the sealing-plug of vacuum detecting, round boss 11 is installed, is dismantled, the first embedded lead and second lead are as the conductor that detects data transmission, by first lead vacuum plant inner vacuum data are derived, by second lead vacuum plant internal temperature data is derived, by described detection module derived data is handled the acquisition vacuum values, the temperature data of collection can be used for revising vacuum values.Ceramic matrix 1 adopts existing pottery and metal integration technology encapsulation process with embedded first lead and second lead, and making between two materials does not have gas leak phenomenon, guarantees the impermeability of vacuum stopper.Thermopair regulates 4 for detecting the detecting element of vacuum values, is in the vacuum plant vacuum layer, is used as and detects vacuum values, and by the first embedded lead vacuum values data are derived.Temperature sensor 3(thermistor) is the detecting element of detected temperatures, is in the vacuum layer, be used as and detect vacuum plant vacuum layer temperature, and the detected temperatures data are derived, and then obtain the vacuum layer temperature data by the second embedded lead.Be in thermopair in the vacuum layer regulate 4 and thermistor 3 on be equipped with element protection cover (figure does not show).The main body of sealing-plug adopts stupalith, adapting to the working environment of ultralow temperature, high temperature, and signal is realized noiseless collection and derivation.
Consult Fig. 3, the sealing plug is mounted on the vacuum pumping port 9 that is welded in advance on vacuum plant 10 outer walls.Under vacuum environment, utilize round boss that the sealing plug is installed on the vacuum pumping port 9 after exhausting vacuum, exhaust the vacuum final vacuum device 10 inside and outside Negative Pressure Difference that form, utilize air, sealing-plug is seal-installed on the vacuum pumping port 9 atmospheric pressure that sealing-plug applies.Carry out three layers of enhanced leaktightness by O-ring seal 6 and O-ring seal 7 being installed respectively in the seal groove on ceramic matrix 15 and O-ring seal 8 being set during installation under ceramic matrix 1 flange.Described O-ring seal is adopted as " O " shape silicone rubber O-ring.
In conjunction with Fig. 1 and Fig. 2, after this vacuum on-line measuring device worked on power, microcontroller was by the working current of thermocouple rule fulgurite 4 in the constant current circuit calibration sealing-plug again.Thermocouple rule fulgurite 4 utilizes the heat conduction phenomenon of gas molecule to obtain the thermoelectrical potential of current vacuum layer, microcontroller obtains the vacuum tightness of current vacuum layer by the proportional relation algorithm between thermoelectrical potential and the vacuum tightness, and by communicating circuit this vacuum tightness is transferred to management system.Described constant current circuit is connected with the lead that described thermocouple rule fulgurite 4 links to each other, and described current sampling circuit is connected with described microcontroller by an A/D sample conversion circuit, is used for detecting in real time the sealing-plug heating current.The thermopair that described differential amplifier circuit connects in the sealing-plug is regulated test side and temperature sensor end (connecting respectively by lead 2), differential amplifier circuit is connected with described microcontroller by the 2nd A/D sample conversion circuit, be used to detect thermopair and regulate thermoelectrical potential and the interior temperature value of vacuum plant that is obtained, promptly regulate and carry out data acquisition by the thermopair of sealing-plug inside.Described detection data are converted to the discernible digital signal of microcontroller by the 2nd A/D change-over circuit after differential amplifier circuit amplifies, microcontroller concerns algorithm computation vacuum tightness value by detecting between data and the vacuum tightness, and the temperature data of collection can be used for revising the vacuum tightness value.Microcontroller can directly carry out remote transmission by data line with the vacuum tightness data of calculating, and is convenient to real-time detection.
The vacuum stopper that the utility model is found time vacuum tube or vacuum tank vacuum layer makes that the band thermopair is regulated or other has the sealing-plug of online vacuum detecting characteristic, and described detection module directly is installed on the sealing-plug top.The sealing element that thermopair is regulated or other has online vacuum detecting characteristic beyond the Great Wall is positioned at vacuum layer and utilizes the thermopair of sealing-plug inside to regulate to carry out data acquisition, data analysis, realizes the online detection of the vacuum tightness of vacuum layer.Data after the detection module computing are directly carried out remote transmission by data line, are convenient to detect in real time control.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.
Claims (8)
1. a vacuum tightness on-line measuring device is characterized in that, comprises the sealing-plug of the vacuum tightness that is used to detect vacuum plant and is used for detection module that the detected data of described sealing-plug are carried out computing; Described detection module comprises microcontroller, and described microcontroller is connected with communicating circuit and power circuit; Described sealing-plug is connected with described microcontroller by constant current circuit; Described sealing-plug is connected with described microcontroller by current sampling circuit, an A/D change-over circuit successively; Described sealing-plug also is connected with microcontroller by differential amplifier circuit, the 2nd A/D change-over circuit successively.
2. vacuum tightness on-line measuring device according to claim 1 is characterized in that, described detection module is connected with described sealing-plug and is structure as a whole with the sealing plug.
3. vacuum tightness on-line measuring device according to claim 1 is characterized in that, described power circuit is the DC/DC power supply.
4. vacuum tightness on-line measuring device according to claim 1 is characterized in that, is connected with the communication buffer circuit between described communicating circuit and the microcontroller.
5. vacuum tightness on-line measuring device according to claim 1 is characterized in that, described communicating circuit is the data communication bus.
6. vacuum tightness on-line measuring device according to claim 1 is characterized in that described microcontroller also is connected with system indicator.
7. vacuum tightness on-line measuring device according to claim 1 is characterized in that described microcontroller also is connected with alarm switch.
8. vacuum tightness on-line measuring device according to claim 1 is characterized in that described constant current circuit is connected with voltage reference circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320106977 CN203083770U (en) | 2013-03-08 | 2013-03-08 | On-line vacuum-degree detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320106977 CN203083770U (en) | 2013-03-08 | 2013-03-08 | On-line vacuum-degree detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203083770U true CN203083770U (en) | 2013-07-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320106977 Expired - Lifetime CN203083770U (en) | 2013-03-08 | 2013-03-08 | On-line vacuum-degree detection device |
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| Country | Link |
|---|---|
| CN (1) | CN203083770U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107560786A (en) * | 2017-09-08 | 2018-01-09 | 成都倍特科技有限责任公司 | Vacuum on-line checking and its compensation system |
-
2013
- 2013-03-08 CN CN 201320106977 patent/CN203083770U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107560786A (en) * | 2017-09-08 | 2018-01-09 | 成都倍特科技有限责任公司 | Vacuum on-line checking and its compensation system |
| CN107560786B (en) * | 2017-09-08 | 2019-12-31 | 成都倍特科技有限责任公司 | Vacuum degree on-line detection and compensation system thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160415 Address after: 610000, Sichuan, Chengdu economic and Technological Development Zone (Longquanyi District) car No. seven, 360 East Road Patentee after: CHENGDU CRAER CRYOGENIC EQUIPMENT Co.,Ltd. Address before: 610041 hi tech Industrial Park, Chengdu hi tech Zone, Sichuan Patentee before: CHENGDU BRILLIANT SCIENCE & TECHNOLOGY Co.,Ltd. |
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| CX01 | Expiry of patent term |
Granted publication date: 20130724 |
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| CX01 | Expiry of patent term |