CN2309565Y

CN2309565Y - Waterless thermal flowmeter

Info

Publication number: CN2309565Y
Application number: CN 97238571
Authority: CN
Inventors: 李少泉; 周治民; 卞宏文
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-07-22
Filing date: 1997-07-22
Publication date: 1999-03-03
Anticipated expiration: 2007-07-22

Abstract

The utility model relates to a waterless heat meter, which relates to a heat detecting device. The utility model is composed of a bullet body, a bullet head, and a temperature sensor, wherein, a bullet body inner cylinder 5 is positioned in a bullet body outer cylinder 4, and a circular annular space is formed between the two cylinders to realize a heat insulating function; the bullet head is installed in the bullet body inner cylinder 5, and produced heat of burning measured objects can be immediately measured by the temperature sensor 3 under the environment of sufficient oxygen. The waterless heat meter has the advantages of rapid and accurate measurement, small system errors, and high work efficiency.

Description

No water calorimeter

It is a kind of testing apparatus that is used for testing the combustible thermal value that the utility model does not have water calorimeter, is to design for replacing traditional ability of swimming heat testing tool.

Ability of swimming heat testing tool is the hot metering outfit of laboratory to the quantitative determination of various combustible combustion heating, and this ability of swimming heat testing tool is produced, used since the sixties in China.In three about ten years practices were used, there was following several shortcoming in ability of swimming heat testing tool:

1, test a project, time spent is longer, and process is many, inefficiency, this mainly is to be caused by two reasons, one is that the heat of release was transmitted in oxygen bomb the water, is absorbed by water after measured matter burnt, the temperature of water is raise, according to the temperature variable of water, calculate the heat that discharges after the tested combustible substance burning, obviously again, test duration is longer, process is more, inefficiency, and Another reason is to test each time all to change water again, adjust the water initial temperature, this brings very big trouble in operating process, the adjustment of initial temperature in technical operation, the adjustment of water temperature in the isothermal calorimeter, weighing of water all has many difficulties, process is many, program is many, setup time is long, and test period is also long, causes inefficiency.

2, test heat error is big, systematic error is big, the reason that causes is two aspects: an aspect is that ability of swimming heat testing tool is to utilize water as medium, after the tested combustible substance burning, its heat will be transmitted in the water by oxygen bomb, is absorbed by water, the temperature of water is raise, the transfer process and the conductive process of heat are many, and thermal loss is many, cause the test macro precision to want big; For obtaining the uniform temperature of water, need constantly to stir, in whipping process on the other hand, produce heat of stirring and thermal cross over, difficulty takes place in the heat that accurate measurement combustible substance burning is discharged, and thermal cross over and heat of stirring are difficult to survey accurate, cause the test macro error, testing precision is poor.

The purpose of this utility model is for overcoming the shortcoming that above-mentioned prior art exists, providing a kind of heat, the reliable operation, simple to operate that can measure accurately and fast after combustible substance is burnt, the no water calorimeter of high efficiency.

The technical scheme that realizes above-mentioned purpose is such:

The utility model includes body, bullet, temperature sensing device three most formations.Described body is to be made of loam cake 2, body urceolus 4, body inner core 5, pressure ring 14, O-ring seal 11, lower cover 13, body inner core 5 is installed in the body urceolus 4, it between body urceolus 4 and the body inner core 5 a garden annular space, body inner core 5 is the empty tube of the handstand garden cylindricality of an end back cover, and bullet is installed in the empty tube of garden cylindricality of body inner core 5.

Described temperature sensing device by sensor gather joint 1, temperature sensor 3 is formed, sensor gathers joint 1 and is installed on the loam cake 2, by the joint output thus of responsive Temperature numerical, temperature sensor 3 is installed in the groove on the outside surface of body inner core 5, the heat that the measured matter burning discharges, wall by body inner core 5, be transmitted to immediately on the temperature sensor 3, at once just can measure the burning capacity of combustible substance, obviously, this no water calorimeter compared with ability of swimming calorimeter testing apparatus use fast, simple, accurately, reliable, high efficiency.

Described bullet is made up of electric ignition silk 6, combustion boat 7, electrode column 8, electrode column 9, oxygen channel 10, bullet body 12, hold tested combustible substance in the combustion boat 7, combustion-supporting oxygen enters in the garden cylindrical space of body inner core 5 by the oxygen channel 10 in the bullet body 12, to guarantee that tested comburant fully burns, electric ignition silk 6 is installed in the top of combustion boat 7 by electrode column 8 and electrode column 9, almost presses close to combustible substance.When external power supply by bullet, when being switched to electrode column 8, electric ignition silk 6, electrode column 9, the electric ignition silk generates heat immediately, measured matter is lighted, in tube oxygen enrichment combustion-supporting down, fully burning.

The utility model does not have water calorimeter and the ability of swimming calorimeter has following advantage by comparison:

1, do not want weighing water because of water not, need not water transfer temperature or constant temperature, operation is few, and process is few, and setup time is short, and is simple to operate, high efficiency.

2, simple in structure, utility appliance is few, thereby systematic error is little, the accuracy height.

3, preliminary work is few before the no water calorimeter test, and program is few in the test, and test back rounding-off work is few, thereby test speed is fast, reliable operation.

4, automaticity height.

Below in conjunction with accompanying drawing the utility model is not had water calorimeter and does detailed elaboration:

Fig. 1 is anhydrous calorimetric cut-open view; But bullet is not analysed and observe.

Among Fig. 1, body inner core 5 is handstand garden drum ladles, the bottom up, the groove that an above temperature sensor 3 is installed is arranged on the outside surface of inner core 5, a temperature sensor 3 is installed in every groove, by combustion boat 7, electric ignition silk 6, electrode column 8,9, the bullet that bullet body 12 is formed is installed in the body inner core 5, it is to be screwed on the screw thread of outside surface of inner core 5 by the internal thread on the lower cover 13, ring-shaped lug on the lower cover 13 is pressed on the pressure ring 14, pressure ring 14 is pressed on the O-ring seal 11, the convex on bullet top contacts with interior convex on the body inner core 5, when screwing lower cover 13, ring-shaped lug on the lower cover 13 is pushed down pressure ring 14, and pressure ring 14 compresses O-ring seal 11, bullet is pressed on the inner core 5 tightly like this, relies on O-ring seal 11, confined gas after oxygen in the body inner core 5 and the burning has been realized the sealing to oxygen and burning gases in body inner core 5.

The internal thread that sensor gathers the loam cake 2 of joint 1 is installed to be connected with the external thread of body urceolus 5, internal thread on the body urceolus 4 is connected with external thread on the body inner core 5, the external diameter of body inner core 5 is less than the internal diameter of body urceolus 4, like this, be an annular space between the inwall of the outer wall of body inner core 5 and body urceolus 4, form a heat insulation layer, heat can not conduct out in the short time at the utmost point, heat can loss, has guaranteed the accuracy of the hot system of no water calorimeter.

No water calorimeter principle of work is as follows:

When external power passes through electrode column 8, electric ignition silk 6, electrode column 9,6 igniting of electric ignition silk, under oxygen-enriched environment, tested combustible substance in the combustion boat 7 is fully burnt, the energy conduction that discharges is to the wall of body inner core 5, be installed in the Temperature numerical that the temperature sensor 3 in body inner core 5 outer wall trench arrives sensitivity, gather joint 1 output from sensor at once, just can obtain the heat energy of measured matter.

Embodiment: developed ten by Fig. 1, test findings meets the GB/T213-1996 national standard fully.

Claims

1, a kind of no water calorimeter, by body, bullet, the temp sensor device three parts constitute, it is characterized in that, body is by loam cake (2), body urceolus (4), body inner core (5), pressure ring (14), O-ring seal (11), lower cover (13) is formed, body inner core (5) is installed in the body urceolus (4), form the garden annular space between body urceolus (4) and the body inner core (5), body inner core (5) is the empty tube of the handstand garden cylindricality of one one end back cover, bullet is installed in the cylindrical tube of body inner core (5), described temp sensor device gathers joint (1) by sensor, temperature sensor (3) is formed, temperature sensor (3) is installed in the groove on the outside surface of body inner core (5), described bullet is by electric ignition silk (6), combustion boat (7), electrode column (8), electrode column (9), oxygen channel (10), bullet body (12) constitutes, and is installed in the endpiece in the body inner core (5).

2, no water calorimeter according to claim 1 is characterized in that the outside surface of body inner core (5) is provided with the groove of one or more, is provided with more than one temperature sensor (3).