CN216012521U

CN216012521U - Special thermocouple of chemical industry torch

Info

Publication number: CN216012521U
Application number: CN202121971507.3U
Authority: CN
Inventors: 杨旭峰
Original assignee: Shenzhen Donhe Instrument Co ltd
Current assignee: Shenzhen Donhe Instrument Co ltd
Priority date: 2021-08-21
Filing date: 2021-08-21
Publication date: 2022-03-11
Anticipated expiration: 2031-08-21

Abstract

A thermocouple special for a chemical torch comprises: the device comprises an armored cable flexible wire, a split connector, a single-core armored galvanic couple and a wear-resistant sleeve, wherein one end of the split connector is connected with the armored cable flexible wire, the other end of the split connector is connected with the single-core armored galvanic couple, and a measuring contact section at the tail end of the single-core armored galvanic couple is arranged on the wear-resistant sleeve. The utility model has the advantages that the torch thermocouple adopts a composite structure of the armored cable flexible wire and the single-core armored thermocouple, two wires are arranged in the conventional common armor, only one thermocouple wire is arranged in the single core, the torch thermocouple is ensured to have enough mechanical strength, the reliability is high, the precision is high, the requirement of high temperature measurement is met, and the mechanical strength is ensured to the maximum extent. The wear-resistant sleeve is arranged at the measuring contact section, so that the requirements of high-temperature strength and corrosion resistance in measurement are met, the service life of the thermocouple is effectively prolonged, and the service life can be guaranteed to the maximum extent even under the acidic reducing gas environment.

Description

Special thermocouple of chemical industry torch

Technical Field

The utility model relates to the technical field of thermocouples, in particular to a thermocouple special for a chemical torch.

Background

The torch is an important component in a petrochemical accident discharge system, the overhead torch tower is high, the torch head, the pilot burner and the torch thermocouple are difficult to overhaul, the torch flame needs to be monitored by the thermocouple in real time, the combustion state of the torch is monitored, toxic and harmful gases are combusted by the torch, the torch needs to be detected by the thermocouple in order to ensure that the normal operation of the torch does not cause toxic gas escape, and the torch is high in temperature, corrosive, easy to damage and difficult to maintain in high-altitude operation, and simultaneously the torch thermocouple is required to meet an operation period.

In order to ensure the temperature measurement accuracy, most manufacturers select a graduation number K-graduation thermocouple, but the K-type thermocouple is unstable at 300-plus 500-degree nichrome thermoelectric force, the temperature measurement is unstable at 800-degree temperature due to oxidation of the nichrome, Cr and Si elements in the positive electrode of the nickel-chromium of the K-type thermocouple are preferentially oxidized to cause uneven alloy components and thermoelectromotive force drift, the temperature resistance of the K graduation is only 1200-degree temperature, and the effect of the K-graduation thermocouple in the range of 0-1300-degree temperature is not ideal.

SUMMERY OF THE UTILITY MODEL

In order to effectively solve the defects of the background technical problem, the utility model provides a thermocouple special for a chemical torch, and the specific scheme of the utility model is as follows:

a thermocouple special for a chemical torch comprises: the device comprises an armored cable flexible wire, a split connector, a single-core armored galvanic couple and a wear-resistant sleeve, wherein one end of the split connector is connected with the armored cable flexible wire, the other end of the split connector is connected with the single-core armored galvanic couple, and a measuring contact section at the tail end of the single-core armored galvanic couple is arranged on the wear-resistant sleeve.

Optionally, the split connector comprises: the back end of the split connector is connected with one end of a single-core armored galvanic couple, and the back end of the split connector is connected with the front end of the split connector in a splicing and matching mode.

Optionally, the number of single-core armored couples is at least one.

Optionally, the single core armored galvanic couple is an N-type single core armored galvanic couple.

Optionally, the split connector is a PHG docking head.

Optionally, the split connector is an FGG docking head.

The utility model has the advantages that the torch thermocouple adopts a composite structure of the armored cable flexible wire and the single-core armored thermocouple, two wires are arranged in the conventional common armor, only one thermocouple wire is arranged in the single core, the torch thermocouple is ensured to have enough mechanical strength, the reliability is high, the precision is high, the requirement of high temperature measurement is met, and the mechanical strength is ensured to the maximum extent. The wear-resistant sleeve is arranged at the measuring contact section, so that the requirements of high-temperature strength and corrosion resistance in measurement are met, the service life of the thermocouple is effectively prolonged, and the service life can be guaranteed to the maximum extent even under the acidic reducing gas environment.

Drawings

FIG. 1 is a schematic view of the unassembled structure of the present invention;

FIG. 2 is a schematic view of the assembled state structure of the present invention;

FIG. 3 is a schematic diagram of a cross-sectional structure of a single-core armored galvanic couple according to the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the combination or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, are not to be construed as limiting the present invention. In addition, in the description process of the embodiment of the present invention, the positional relationships of the devices such as "upper", "lower", "front", "rear", "left", "right", and the like in all the drawings are based on fig. 1.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The utility model is further described below with reference to the accompanying drawings:

as shown in fig. 1 and 2, a thermocouple specially used for a chemical torch comprises: the device comprises an armored cable flexible wire 1, a split connector, a single-core armored galvanic couple 4 and a wear-resistant sleeve 5, wherein one end of the split connector is connected with the armored cable flexible wire 1, the other end of the split connector is connected with the single-core armored galvanic couple 4, and a measuring contact section at the tail end of the single-core armored galvanic couple 4 is arranged on the wear-resistant sleeve 5. The number of the single-core armored couples 4 is at least one.

As shown in fig. 1 to 3, the single-core armored galvanic couple 4 is an N-type single-core armored galvanic couple, which has strong oxidation resistance and long-term stability, and the content of Cr and Si in the N-type galvanic couple is increased, so that the oxidation mode of nichrome is changed from internal oxidation to external oxidation, and the oxidation reaction is only performed on the surface. The low-temperature short-term thermal cycle stability is good, the magnetic transformation is inhibited, and the nuclear radiation resistance is strong. The N-type thermocouple cancels easily-degenerated elements Mn and Co in the K-type thermocouple, so that the neutron irradiation resistance is further enhanced, and the thermoelectric property of the N-type thermocouple is better within the range of 400-1300C.

As shown in fig. 1-2, the split connector includes: the split type electric connector comprises a split type connector rear end 2 and a split type connector front end 3, wherein the split type connector front end 3 is connected with one end of an armored cable flexible wire 1, the split type connector rear end 2 is connected with one end of a single-core armored galvanic couple 4, and the split type connector rear end 2 is connected with the split type connector front end 3 in a splicing matching mode, so that the armored cable flexible wire 1 and the single-core armored galvanic couple 4 are connected together and conducted. The split connector may employ a PHG and/or FGG docking head.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the claims and their equivalents.

Claims

1. The utility model provides a special thermocouple of chemical industry torch which characterized in that includes: armoured cable patchcord (1), components of a whole that can function independently connector, single core armoured galvanic couple (4) and wear-resisting sleeve pipe (5), components of a whole that can function independently connector one end is connected with armoured cable patchcord (1), the components of a whole that can function independently connector other end is connected with single core armoured galvanic couple (4), the terminal measurement contact section setting of single core armoured galvanic couple (4) wear-resisting sleeve pipe (5).

2. The thermocouple specially used for a chemical torch as claimed in claim 1, wherein the split connector comprises: the split type cable flexible wire connector comprises a split type connector rear end (2) and a split type connector front end (3), wherein the split type connector front end (3) is connected with one end of an armored cable flexible wire (1), the split type connector rear end (2) is connected with one end of a single-core armored galvanic couple (4), and the split type connector rear end (2) and the split type connector front end (3) are connected in a splicing matching mode.

3. The thermocouple specially used for the chemical torch, according to the claim 2, characterized in that the number of the single core armoured galvanic couples (4) is at least one.

4. The thermocouple specially used for the chemical torch as claimed in claim 2, wherein the single-core armored galvanic couple (4) is an N-type single-core armored galvanic couple.

5. The thermocouple specially used for a chemical torch as claimed in claim 1, wherein the split connector is a PHG butt joint.

6. The thermocouple specially adapted for chemical flare of claim 1, wherein the split connector is an FGG butt joint.