CN214583469U - Instrument electric tracing overtemperature protection measuring tube - Google Patents
Instrument electric tracing overtemperature protection measuring tube Download PDFInfo
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- CN214583469U CN214583469U CN202120586006.7U CN202120586006U CN214583469U CN 214583469 U CN214583469 U CN 214583469U CN 202120586006 U CN202120586006 U CN 202120586006U CN 214583469 U CN214583469 U CN 214583469U
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Abstract
The utility model provides an instrument electric heat tracing overtemperature protection surveys buret, includes the inner tube, and one section outer tube is extended to the bending outward of inner tube one end and along the inner tube axis, and outer tube vacant end and inner tube fixed connection are outwards bent in the other one end of inner tube and are formed first flange, and instrumentation and first flange joint are separated out annular cavity by inner tube and outer tube, are equipped with the line that generates heat in the annular cavity room, are equipped with the second flange that is used for being connected with chemical container on the outer tube. The utility model discloses can avoid the instrument to measure and receive the ambient temperature influence, guarantee instrument measuring accuracy and stability.
Description
Technical Field
The utility model relates to an instrument electric heat tracing overtemperature protection survey buret.
Background
In petrochemical production, a plurality of meters and measuring tubes thereof are in outdoor environment, some media detected by the meters are low temperature, and some media are influenced by ambient temperature and are easy to freeze. If the display error relates to alarm, automatic control or safety interlocking, a light person can cause misjudgment of a production operator, and in a serious case, the adverse consequences of misoperation of an automatic controller or error parking of equipment and the like can be caused, so that great threat is brought to safety production. Therefore, the instrument needs to be subjected to heat tracing and heat preservation, the traditional instrument heat tracing mode has steam and hot water heat tracing, the two heat tracing modes have the defects of complex piping and poor temperature control, the temperature control is too low to meet the requirement of instrument heat tracing, and the medium in the instrument is gasified to cause inspection distortion or damage to the instrument due to too high temperature.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide an instrument electric heat tracing overtemperature protection surveys buret can avoid the instrument to measure and receive the ambient temperature influence, guarantees instrument measuring accuracy and stability.
In order to solve the above problem, the to-be-solved technical scheme of the utility model is:
the utility model provides an instrument electric heat tracing overtemperature protection surveys buret, includes the inner tube, and one section outer tube is extended to the bending outward of inner tube one end and along the inner tube axis, and outer tube vacant end and inner tube fixed connection are outwards bent in the other one end of inner tube and are formed first flange, and instrumentation and first flange joint are separated out annular cavity by inner tube and outer tube, are equipped with the line that generates heat in the annular cavity room, are equipped with the second flange that is used for being connected with chemical container on the outer tube.
The heating wire is spirally arranged in the annular chamber.
The outer tube is wrapped with a heat insulation layer.
The temperature sensor is arranged on the inner pipe and connected with the input end of the temperature controller, and the heating wire is connected with the output end of the temperature controller.
The utility model has the advantages that: the traditional instrument heat tracing installation mode is improved, the instrument is installed on the double-layer pipe, the double-layer pipe is heated and temperature is controlled, the temperature is controlled through the temperature sensor and the temperature controller, and the phenomenon that measurement distortion is caused due to freezing of an internal medium or gasification of the medium is prevented.
Drawings
The invention will be further explained with reference to the drawings:
fig. 1 is a schematic sectional view of the present invention.
In the figure: chemical container 1, second flange 2, inner tube 3, outer tube 4, heating wire 5, first flange 6, instrumentation 7, temperature sensor 8, temperature controller 9, insulating layer 10.
Detailed Description
As shown in figure 1, an instrument electric heat tracing overtemperature protection measuring pipe comprises an inner pipe 3, one end of the inner pipe 3 bends outwards and extends out of a section of outer pipe 4 along the axis of the inner pipe 3, the vacant end of the outer pipe 4 is fixedly connected with the inner pipe 3, the other end of the inner pipe 3 is bent outwards to form a first flange 6, a detection instrument 7 is connected with the first flange 6, an annular cavity is formed by the inner pipe 3 and the outer pipe 4 at intervals, a heating wire 5 is arranged in the annular cavity, and a second flange 2 used for being connected with a chemical container 1 is arranged on the outer pipe 4. The medium in the inner tube 3 is heated by the heating wire 5, so that the measurement distortion caused by the freezing of the medium is prevented; this kind of double-deck enclosed construction of survey buret in addition can extend survey buret to chemical container 1 inside, can effectually prevent to survey buret mouth of pipe medium freeze for the medium is heated more evenly, protects heating wire 5 simultaneously.
The heating wire 5 is spirally arranged in the annular chamber. The contact surface of the heating wire 5 and the measuring tube is improved, and the heating effect is improved.
The outer pipe 4 is wrapped with a layer of asbestos heat insulation layer 10.
Still include temperature sensor 8 and temperature controller 9, temperature sensor 8 installs on inner tube 3, and temperature sensor 8 connects the 9 inputs of temperature controller, and the 9 outputs of temperature controller are connected to heating wire 5. The heating wire 5 is controlled to be started and stopped by the temperature sensor 8 and the temperature controller 9, so that the temperature of a medium in the measuring tube is maintained within a set range, and the accuracy and the stability of the measurement of the instrument are ensured.
Claims (4)
1. The utility model provides an instrument electric heat tracing overtemperature protection surveys buret which characterized in that: including inner tube (3), one section outer tube (4) is extended to outside bending of inner tube (3) one end and along inner tube (3) axis, outer tube (4) vacant end and inner tube (3) fixed connection, outwards bend in inner tube (3) other one end and form first flange (6), instrumentation (7) are connected with first flange (6), separate out annular cavity by inner tube (3) and outer tube (4), indoor line (5) that generates heat that is equipped with of annular cavity, be equipped with second flange (2) that are used for being connected with chemical container (1) on outer tube (4).
2. The instrument electric heat tracing overtemperature protection measuring tube of claim 1, characterized in that: the heating wire (5) is spirally arranged in the annular chamber.
3. The instrument electric heat tracing overtemperature protection measuring tube of claim 1, characterized in that: the outer pipe (4) is wrapped with a layer of heat insulation layer (10).
4. The instrument electric heat tracing overtemperature protection measuring tube of claim 1, characterized in that: still include temperature sensor (8) and temperature controller (9), temperature sensor (8) are installed on inner tube (3), and temperature sensor (8) are connected temperature controller (9) input, and temperature controller (9) output is connected in heating wire (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120586006.7U CN214583469U (en) | 2021-03-23 | 2021-03-23 | Instrument electric tracing overtemperature protection measuring tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120586006.7U CN214583469U (en) | 2021-03-23 | 2021-03-23 | Instrument electric tracing overtemperature protection measuring tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214583469U true CN214583469U (en) | 2021-11-02 |
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ID=78355189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120586006.7U Active CN214583469U (en) | 2021-03-23 | 2021-03-23 | Instrument electric tracing overtemperature protection measuring tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214583469U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116577595A (en) * | 2023-07-12 | 2023-08-11 | 扬州兴民电器有限公司 | Electrical heating tube performance testing device |
-
2021
- 2021-03-23 CN CN202120586006.7U patent/CN214583469U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116577595A (en) * | 2023-07-12 | 2023-08-11 | 扬州兴民电器有限公司 | Electrical heating tube performance testing device |
| CN116577595B (en) * | 2023-07-12 | 2023-09-26 | 扬州兴民电器有限公司 | Electrical heating tube performance testing device |
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