CN2362113Y

CN2362113Y - Device for measuring temperature of pneumatic conveying granular material

Info

Publication number: CN2362113Y
Application number: CN 99203428
Authority: CN
Inventors: 章云
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-02-06
Filing date: 1999-02-06
Publication date: 2000-02-02
Anticipated expiration: 2009-02-06

Abstract

The utility model relates to a device for measuring the temperature of pneumatic conveying flowing particle material. The utility model is used for the on-line measurement of the temperature of the flowing particle material in a pipeline (4). The utility model is characterized in that an abrasion-resistant bar (1) is arranged right in front of a temperature measuring element (2) so that the temperature measuring element is positioned in a reflux area formed behind the abrasion-resistant bar. The utility model can effectively avoid direct erosion and abrasion caused by the flowing material to the temperature measuring element and prolongs the service life of the temperature measuring element. The device for measuring the temperature of pneumatic conveying flowing particle material can also make the temperature measuring element rapidly induce the temperature change of the flowing particle material so that the service life of the temperature measuring element reaches more than 15000 hours.

Description

The temperature measuring equipment of strength delivery of particulate material material

The utility model relates to the on-line measurement of the temperature of Dual-Phrase Distribution of Gas olid body in the on-line measurement, particularly strength pulverized coal conveying pipeline of flow particles (or powdery) temperature of charge in the Pneumatic conveying pipeline.

Measure for the flow particles material temperature of carrying by strength in the pipeline, the easy to wear of temperature element is puzzlement people's a great problem.The existing method of handling this problem has two kinds: the first is at surface applied (spraying or the surfacing) wimet of temperature element, to improve the wearing quality of temperature element itself; It two is at the temperature element abrasion-resistant metal pipe of suit one heavy wall in appearance, to isolate the direct impact wear of granule materials to temperature element that flow.But the deficiency of these two kinds of methods is, in method one, because of the thickness of overlay is restricted (less than 1mm), its wearing quality only temperature element than the common material that does not deal with is slightly strong; In method two, because the tube wall of abrasion-resistant metal pipe is thicker, thermal inertia is big, and poor to variation of temperature susceptibility, adjustment often lags behind.

The purpose of this utility model provides and can prevent temperature element wearing and tearing, again the temperature measuring equipment of induced flow granule materials temperature variation fast.

The purpose of this utility model is achieved in that the dead ahead (on the streams Inbound) at temperature element is provided with an abrasion-proof stick, when material is flowed through abrasion-proof stick with certain flow velocity Vo, according to " fluid flows around the object " principle in the fluid mechanics, form an enclosed or open type recirculating zone in the abrasion-proof stick back, and the fluid velocity in the recirculating zone is far below Vo.Therefore, as long as the position that is provided with of abrasion-proof stick makes temperature element be in this recirculating zone, so, temperature element just can be avoided the direct erosive wear that flow velocity is the flow particles material of Vo, prolonged the serviceable life of temperature element, and can make the temperature element temperature variation of induced flow granule materials apace.

The barred body shape (shape of cross section) of abrasion-proof stick is so long as be symmetry shape with the line in vertical axle center of abrasion-proof stick and temperature element and get final product, can be circular rod, elliptical rods, isosceles triangle rod, square rod, also can be the barred body of other symmetric shapes.With the circular rod is best.

Distance between abrasion-proof stick and the temperature element is a principle in the recirculating zone that places abrasion-proof stick to form later with temperature element.Abrasion-proof stick longitudinal center of gravity axle to the distance L of temperature element and abrasion-proof stick perpendicular to the relation of the maximum cross-section width D of Flow of Goods and Materials direction, preferably satisfy D≤L≤2D.

The size of abrasion-proof stick (or claiming D) generally only depends on its distance L apart from temperature element, but also to suitably consider the size of convey materials caliber, not influence material flow significantly excessively is foundation, caliber greatly then abrasion-proof stick can be more greatly, the little then abrasion-proof stick of caliber can be littler, preferably gets D=12-130mm and be advisable.

The utility model can be in principle in the recirculating zone that forms behind the abrasion-proof stick according to temperature element, makes the support that is connected of abrasion-proof stick and temperature element earlier, after abrasion-proof stick and temperature element are pegged graft, is installed in then in the flowable materials pipeline.Also abrasion-proof stick and temperature element patchhole can on the flowable materials pipeline, have been cut a hole, in abrasion-proof stick and temperature element embolus pipe material.

The utility model both can have been avoided the direct erosive wear of flowable materials to temperature element effectively, prolong the serviceable life of temperature element, also can make the temperature element temperature variation of induced flow granule materials apace, successfully solved the long-term on-line measurement problem of flow particles temperature of charge in the pipeline, reached more than 15000 hours the serviceable life of temperature measuring equipment.

Accompanying drawing is that the utility model is installed in the enforcement illustration on the material pipe, and abrasion-proof stick is a circular rod.

Accompanying drawing 1 is implemented the side sectional view of illustration for this reason, and (1) is abrasion-proof stick; (2) be temperature element; (3) be abrasion-proof stick and the support that is connected of temperature element; (4) be duct wall, Vo is material flow and direction.

Accompanying drawing 2 is implemented the vertical view of illustration for this reason, and (1) is abrasion-proof stick; (2) be temperature element; (3) be abrasion-proof stick and the support that is connected of temperature element, D is abrasion-proof stick diameter (a maximum cross-section width), and L is the distance between abrasion-proof stick and the temperature element.

Below will the utility model is further described by embodiment.

Embodiment 1: circular abrasion-proof stick, and maximum cross-section width (circular diameter) D is 32mm, being installed in apart from abrasion-proof stick circle central axis distance L by the connection support temperature element is the 43mm place.Then, abrasion-proof stick and temperature element are installed in the flow particles material pipe by support.

Embodiment 2: circular abrasion-proof stick, D are 20mm, and L is 30mm, in the mode of embodiment 1, are installed in the flow particles material pipe.

Embodiment 3: the isosceles triangle abrasion-proof stick, and D (base) is 36mm, and the two isosceles length of sides are 16mm, and it is the 48mm place that temperature element is installed in apart from the distance L of this wear-resisting longitudinal center of gravity axle by support.Then, the mode with embodiment 1 is installed in the flow particles material pipe.

Embodiment 4: square abrasion-proof stick, corner angle of getting abrasion-proof stick are over against the logistics direction, and D (catercorner length) is 38mm, and L is 47mm, are installed in the flow particles material pipe in the mode of embodiment 1.

Claims

1, a kind of temperature measuring equipment of strength transport flow granule materials is characterized in that in the dead ahead of temperature element an abrasion-proof stick being set, and makes temperature element be in the recirculating zone that abrasion-proof stick forms later.

2, device according to claim 1, it is characterized in that abrasion-proof stick longitudinal center of gravity axle to the distance L of measuring sensor and abrasion-proof stick perpendicular to the maximum cross-section width D of Flow of Goods and Materials direction, satisfy D≤L≤2D.

3, device according to claim 1 is characterized in that the abrasion-proof stick barred body is the barred body that is symmetry shape with the line in vertical axle center of abrasion-proof stick and temperature element.

4, device according to claim 3 is characterized in that abrasion-proof stick is a circular rod.

5, device according to claim 3 is characterized in that abrasion-proof stick is the isosceles triangle rod.

6, device according to claim 3 is characterized in that abrasion-proof stick is 12-130mm perpendicular to the maximum cross-section width of Flow of Goods and Materials direction.

7, according to claim 1,2 described devices, it is characterized in that abrasion-proof stick and temperature element are fixed on the same support, be installed in again in the Flow of Goods and Materials pipeline.

8,, it is characterized in that abrasion-proof stick and temperature element are installed in respectively in the Flow of Goods and Materials pipeline according to claim 1,2 described devices.