CN201340307Y

CN201340307Y - Electronic temperature measuring device of portable oil tank

Info

Publication number: CN201340307Y
Application number: CNU2009200385579U
Authority: CN
Inventors: 郝思龙
Original assignee: NANJING TENGMAI TECHNOLOGY Co Ltd
Current assignee: NANJING TENGMAI TECHNOLOGY Co Ltd
Priority date: 2009-01-13
Filing date: 2009-01-13
Publication date: 2009-11-04
Anticipated expiration: 2019-01-13

Abstract

The utility model relates to an electronic temperature measuring device of a portable oil tank. The electronic temperature measuring device comprises a temperature sensor, an electronic temperature measuring circuit, a digital display screen and a power supply; wherein the temperature sensor is an anti-explosion type digital temperature sensor, and selects a DS18B20 type single-bus digital temperature sensor. The electronic temperature measuring device cannot be affected by the temperature of external environment, and has the advantages of safe anti-explosion, quick temperature measuring, accurate reading, convenient carrying as well as using and the like. The electronic temperature measuring device can collect as well as store oil temperature data in real time, exchange data with a host computer, and the like; therefore, the electronic temperature measuring device is a practical tool for a gauger at a gas station or an oil depot.

Description

Portable oil tank electronic temperature measurement device

Technical field

The utility model relates to a kind of electronic temperature measurement device, particularly a kind ofly specially the oil plant in the oil tank is carried out thermometric device.

Background technology

The oil plant that stores in refuelling station and the stock tank is in oil-feed, storage and sales process, POL measuring adopts M=V* ρ t to calculate weight usually, M=weight, the V=volume,, the density under the ρ t=current oil temperature, wherein oily temperature t is the POL measuring key factor, whether accurate, directly therefore influence metering result has strict operating provision to gathering oily temperature if gathering oily temperature.

The insulation boxlike mercury thermometer that generally adopts is gathered the oil temperature at present, its structure as shown in Figure 1, mainly by stay cord 1, support 2, observation panel 3, mercury thermometer 4, moist closet 5 is formed, the temperature-sensitive head 6 of mercury thermometer places moist closet 5, and mercury thermometer 4 is suspended on the support 2, and the scale commonly used of mercury thermometer places between the observation panel 3.During thermometric, hand takes stay cord 1 that incubation chamber is put into the oil tank appropriate location, keeps allowing in 5 minutes oil plant temperature in the moist closet with oil plant is consistent on every side, and the taking-up incubation chamber reads temperature value from observation panel, finishes the temperature acquisition process.Because the temperature-sensitive head of thermometer is incubated, therefore read temperature value substantially near oil plant temperature in the oil tank in the moist closet of incubation chamber.Thisly add with mercury thermometer that incubation chamber is auxiliary obviously to exist following shortcoming by artificial temp measuring method:

1, complex operation--volume is bigger, operation inconvenience, and putting into oil will have enough temperature retention times, outwells after temperature is read in taking-up again, and step is more.

2, error is big--and after incubation chamber was taken out from oil plant, if with environment temperature the temperature difference is arranged, the moist closet temperature was also along with variation, and big more with the external environment temperature difference, the reading duration is long more, and error is also just big more.

3, reading difficulty-the be positioned over thermometer in the incubation chamber when old graduation of thermometer is not known, during at dusk by means of illumination, all can cause temperature to read difficulty when overcast and rainy light is dark.

4, bad management-tank gauging strict regulations measurement temperature interval time and incubation chamber temperature acquisition method, but in practical operation because loaded down with trivial details, the measurement result of reading also will appear at will filling in reasons such as reading difficulty.

So existing insulation boxlike mercury thermometer exists obviously that temperature measurement error is big, measuring accuracy is low and shortcoming such as complex operation, suddenly waits to improve.

Summary of the invention

The purpose of this utility model is in order to overcome the weak point of the box mercury thermometer of above-mentioned insulation, design and a kind ofly be not subjected to that ambient temperature influences, safety anti-explosive, thermometric rapidly, accuracy of reading, portable oil tank electronic temperature measurement device easy to use.

Portable oil tank electronic temperature measurement device of the present utility model, comprise temperature sensor, the electronic temperature measurement circuit, digital display screen and power supply, wherein, described temperature sensor is the protected against explosion digital temperature sensor, its structure comprises copper shell, copper gland, compress rubber, conduction oil, cable for measuring temperature and digital temperature sensor, the lead-foot-line of described digital temperature sensor be contained in the copper shell after cable for measuring temperature is connected, conduction oil be potted in digital temperature sensor around, compressing serum cap is contained on the conduction oil, the copper gland lid is contained on the copper shell mouth, the other end of cable for measuring temperature passes with the electronic temperature measurement circuit from the cable aperture that compresses rubber and copper gland and is connected, and shows the copper shell environment temperature in real time by electronic temperature measurement circuit control figure display screen again.Described digital temperature sensor is selected DS18B20 type unibus digital temperature sensor for use.

Portable oil tank electronic temperature measurement device of the present utility model, owing to use protected against explosion digital temperature sensor and digital display screen to show the oil temperature, has safety anti-explosive, thermometric is rapid, accuracy of reading, advantage such as portably use and be not subjected to that ambient temperature influences convenient, not only can gather in real time and store each point temperature in the oil tank, also can easily calculate numerical value such as oil plant volume factor VCF and standard density p20 according to preset parameter, in case of necessity can also be by USB interface and host computer swap data, shortcomings such as error appear in temperature when having avoided directly that the mercury thermometer scale is not cleer and peaceful to leave oil plant, and department's measuring control such as refuelling station are raised the efficiency.Real is a kind of good helper's instrument of refuelling station or oil depot gauger.

Description of drawings

Fig. 1 is the structural representation of existing insulation boxlike mercury thermometer; Among the figure 1 is stay cord, the 2nd, and support, the 3rd, observation panel, the 4th, mercury thermometer, the 5th, moist closet, the 6th, temperature-sensitive head

Fig. 2 is the structural representation of the protected against explosion digital temperature sensor in the utility model;

Fig. 3 is a kind of circuit structure block scheme in the utility model;

Fig. 4 is the control program process flow diagram of Fig. 3 circuit structure;

Fig. 5 is the oil tank electronic temperature measurement schematic representation of apparatus of Fig. 3 circuit structure;

Fig. 6 is the another kind of circuit structure block scheme in the utility model;

Fig. 7 is the control program process flow diagram of Fig. 6 circuit structure;

Fig. 8 is the oil tank electronic temperature measurement schematic representation of apparatus of Fig. 6 circuit structure;

Embodiment

Referring to accompanying drawing, Fig. 2 is the structural representation of the protected against explosion digital temperature sensor in the utility model, and 11 among the figure is digital temperature sensors, the 12nd, and conduction oil, the 13rd, copper shell, the 14th compresses rubber, and the 15th, copper gland, the 16th, cable for measuring temperature.The lead-foot-line of described digital temperature sensor 11 be contained in the copper shell 13 after cable for measuring temperature 16 is connected, conduction oil 12 be potted in digital temperature sensor 11 around, compressing rubber 14 lids is contained on the conduction oil 12, copper gland 15 lids are contained on the copper shell mouth, and the other end of cable for measuring temperature 16 passes the back and is connected with the electronic temperature measurement circuit from the cable aperture that compresses rubber 14 and copper gland 15.Digital temperature sensor 11 is selected DS18B20 type unibus digital temperature sensor for use.The block scheme of electronic temperature measurement circuit structure such as Fig. 3 or shown in Figure 6 are because physical circuit is a universal circuit, just not at this detailed description.The control program process flow diagram of Fig. 3 and Fig. 6 is respectively as Fig. 4 and shown in Figure 7, its concrete temperature measuring equipment respectively as shown in Figure 5 and Figure 8, in Fig. 5 or Fig. 8 21 are liquid crystal displays, the 22nd, casing, the 23rd, cable for measuring temperature, the 24th, pushbutton switch, the 25th, protected against explosion digital temperature sensor and temperature probe.

During use, hand-held cable for measuring temperature 23 is put into temperature probe 25 in the oil plant to be measured, click power switch, because temperature probe is to be filled with conduction oil in copper housing, so can measure the oil plant temperature within a short period of time, when oil plant and ambient temperature difference are big, also only needed about about 1 minute can on liquid crystal display, demonstrate stable oil plant temperature.Have safety anti-explosive, thermometric rapidly, accuracy of reading, portably use convenient and advantage such as be not subjected to that ambient temperature influences, can to oily temperature gather in real time, store and with host computer swap data etc., be a kind of utility of refuelling station or oil depot gauger.

Claims

1, a kind of portable oil tank electronic temperature measurement device, comprise temperature sensor, the electronic temperature measurement circuit, digital display screen and power supply, it is characterized in that described temperature sensor is the protected against explosion digital temperature sensor, its structure comprises copper shell, copper gland, compress rubber, conduction oil, cable and digital temperature sensor, the lead-foot-line of described digital temperature sensor be contained in the copper shell after cable is connected, conduction oil be potted in digital temperature sensor around, compressing serum cap is contained on the conduction oil, the copper gland lid is contained on the copper shell mouth, the other end of cable passes copper shell and is connected with the electronic temperature measurement circuit from the mesopore that compresses rubber and copper gland, show the copper shell environment temperature in real time by electronic temperature measurement circuit control figure display screen again.

2, portable according to claim 1 oil tank electronic temperature measurement device is characterized in that digital temperature sensor selects DS18B20 type unibus digital temperature sensor for use.