CN2151456Y - Micro-positive pressure thermocouple for measuremen of temp. - Google Patents
Micro-positive pressure thermocouple for measuremen of temp. Download PDFInfo
- Publication number
- CN2151456Y CN2151456Y CN 93227087 CN93227087U CN2151456Y CN 2151456 Y CN2151456 Y CN 2151456Y CN 93227087 CN93227087 CN 93227087 CN 93227087 U CN93227087 U CN 93227087U CN 2151456 Y CN2151456 Y CN 2151456Y
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- CN
- China
- Prior art keywords
- thermocouple
- intermediate connector
- porcelain
- micro
- positive pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The utility model relates to a micro-positive pressure thermocouple for measuring temperature. The micro-positive pressure thermocouple for measuring temperature solves the problems of the existing temperature thermocouple that thermocouple wires are denatured to break and service life is decreased because harmful gases in measured objects are easy to penetrate in a protection tube to infringe the thermocouple wires. The micro-positive pressure thermocouple for measuring temperature comprises an air intake cavity with a suction nozzle and an air exhaust cavity with an air exhaust valve. The outer side of a porcelain post at the middle is filled with sealing fillers and is provided with a sealing gland, which enables pressure which is slightly above the pressure of the measured objects to lead in a temperature measuring protection tube, and namely, the micro-positive pressure, so that the harmful gases can not infringe the thermocouple wires for measuring temperature. Thus, the service life of the micro-positive pressure thermocouple for measuring temperature is increased.
Description
The utility model belongs to a kind of thermometric apparatus, particularly a kind of pressure-fired temperature thermocouple.
Existing temperature thermocouple, its structure is mainly connected to form by terminal box, porcelain knob and protection tube, and its terminal box is used for tasting being connected of lead with outside the benefit; Porcelain knob is used to wear two thermocouple wires, makes its mutually insulated; Protection tube is used to protect thermocouple wire to avoid being subjected to the direct infringement of mechanical damage and harmful gas.The thermopair of said structure, because the pressure in its protection tube is equal to or less than the pressure of measurand (in burner hearth), the harmful gas in the measurand is easy to penetrate into infringement thermocouple wire in the protection tube, makes thermo wires sex change brittle failure, reduces serviceable life.
The purpose of this utility model is to solve existing existing problem, and a kind of pressure-fired temperature thermocouple that improves serviceable life is provided.
The utility model is achieved in that in the lower end of idol head and is welded with loam cake, lower end at the idol head is equipped with plug by screw thread, loam cake connects intermediate connector by bolt, between loam cake and intermediate connector, be equipped with the inlet chamber annulus, at the air intake opening place of inlet chamber annulus air inlet is installed and chews, form inlet chamber; Intermediate connector is provided with binding post, and intermediate connector is connected with porcelain tube fit sealing seat by bolt, at the intermediate connector endoporus porcelain knob is installed, and the filling airtight and watertight padding is installed the conical surface seal gland by screw thread then; Between intermediate connector and porcelain tube fit sealing seat, be equipped with the discharge chamber annulus, be equipped with vent valve, form discharge chamber in the exhaust ports of discharge chamber annulus; Bottom at porcelain tube fit sealing seat is welded with ring flange, at the endoporus of porcelain tube fit sealing seat protection tube is installed, and protection tube is enclosed within the outside of porcelain knob, and the filling airtight and watertight padding is installed sealing gland by screw thread then.
Advantage of the present utility model is; formed inlet chamber, discharge chamber and exhaust ports taper variable valve; make the pressure of introducing a little higher than measurand in the thermometric protection tube; it is pressure-fired; reduce the infiltration capacity of harmful gas; and in thermopair, form a circulating current; the direction of air-flow is: entered the porcelain knob in-core that wears thermo wires by inlet chamber; discharge by end downwards along the porcelain knob in-core; air-flow covers terminal thermometric hot junction; and return back up in the discharge chamber along the porcelain knob outer wall, be discharged in the atmosphere through exhaust taper variable valve and go.By the adjusting of vent valve, can be arranged on circulating current on the suitable flow, eliminate the temperature measurement error that causes by circulating current; So the round-robin air-flow is in time taken away the harmful gas that penetrates in the protection tube, makes harmful gas can not encroach on the thermocouple wire of thermometric, thereby has increased the serviceable life of thermopair.
Fig. 1 is a structural representation of the present utility model;
Describe in detail below in conjunction with accompanying drawing:
As shown in the figure, be welded with loam cake 2 even 1 lower end, by screw thread plug 10 is installed even 1 lower end, loam cake 2 connects intermediate connector 4 by bolt, be equipped with inlet chamber annulus 3 between loam cake 2 and intermediate connector 4, at the air intake opening place of inlet chamber annulus 3 air inlet be installed and chew 11, air inlet is chewed 11 and is air source inlet, be used to connect air filter regulator, the pressure of its inlet is decided according to measurand; Formed inlet chamber by loam cake 2, inlet chamber annulus 3 and intermediate connector 4; Intermediate connector 4 is provided with binding post, and intermediate connector 4 is connected with porcelain tube fit sealing seat 6 by screw; At intermediate connector 4 endoporus porcelain knob 8 is installed, the filling airtight and watertight padding is installed conical surface seal gland 12 by screw thread then; Between intermediate connector 4 and porcelain tube fit sealing seat 6, be equipped with discharge chamber annulus 5, be equipped with vent valve 13, form discharge chamber by intermediate connector 4, discharge chamber annulus 5 and porcelain tube fit sealing seat 6 in the exhaust ports of discharge chamber annulus 5; Bottom at porcelain tube fit sealing seat 6 is welded with ring flange 7, at the endoporus of porcelain tube fit sealing seat 6 protection tube 9 is installed, and protection tube 9 is enclosed within the outside of porcelain knob 8, and the filling airtight and watertight padding is installed sealing gland 14 by screw thread then.Thermocouple wire is drawn on the binding post that is connected on intermediate connector by the idol head, and the thermocouple wire that is installed with in porcelain knob is connected on the binding post.Said gland produces radial and axial thrust to airtight and watertight padding and has good sealing and the fastening effect of porcelain tube; The spool head of exhaust taper variable valve is a circular cone, and afterbody is the right cylinder of band fine thread, and the end has the spiral shell edge of a knife, and the gas of releasing is discharged by the overflow vent on the valve tube wall, can change the aperture of valve by the rotation of spool, thereby changes the flow of circulating current.
Claims (1)
1, a kind of pressure-fired temperature thermocouple, the lower end that is included in the idol head is welded with loam cake, protection tube, porcelain knob and thermocouple wire, lower end at the idol head is equipped with plug by screw thread, it is characterized in that, loam cake connects intermediate connector by bolt, between loam cake and intermediate connector, be equipped with the inlet chamber annulus, at the air intake opening place of inlet chamber annulus air inlet be installed and chew, form inlet chamber; Intermediate connector is provided with binding post, and intermediate connector is connected with porcelain tube fit sealing seat by bolt, at the intermediate connector endoporus porcelain knob is installed, and the filling airtight and watertight padding is installed the conical surface seal gland by screw thread then; Between intermediate connector and porcelain tube fit sealing seat, be equipped with the discharge chamber annulus, be equipped with vent valve, form discharge chamber in the exhaust ports of discharge chamber annulus; Bottom at porcelain tube fit sealing seat is welded with ring flange, at the endoporus of porcelain tube fit sealing seat protection tube is installed, and protection tube is enclosed within the outside of porcelain knob, and the filling airtight and watertight padding is installed sealing gland by screw thread then.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93227087 CN2151456Y (en) | 1993-01-08 | 1993-01-08 | Micro-positive pressure thermocouple for measuremen of temp. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93227087 CN2151456Y (en) | 1993-01-08 | 1993-01-08 | Micro-positive pressure thermocouple for measuremen of temp. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2151456Y true CN2151456Y (en) | 1993-12-29 |
Family
ID=33804425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93227087 Expired - Fee Related CN2151456Y (en) | 1993-01-08 | 1993-01-08 | Micro-positive pressure thermocouple for measuremen of temp. |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2151456Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101311691B (en) * | 2007-05-21 | 2010-09-29 | 大洋电机工业株式会社 | Temperature tester based on film type temperature sensor and its manufacture method |
-
1993
- 1993-01-08 CN CN 93227087 patent/CN2151456Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101311691B (en) * | 2007-05-21 | 2010-09-29 | 大洋电机工业株式会社 | Temperature tester based on film type temperature sensor and its manufacture method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |