CN212320982U - Intelligent high-temperature pressure transmitter capable of realizing one-key zero clearing - Google Patents
Intelligent high-temperature pressure transmitter capable of realizing one-key zero clearing Download PDFInfo
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- CN212320982U CN212320982U CN202021201737.7U CN202021201737U CN212320982U CN 212320982 U CN212320982 U CN 212320982U CN 202021201737 U CN202021201737 U CN 202021201737U CN 212320982 U CN212320982 U CN 212320982U
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Abstract
The utility model relates to an intelligent high-temperature pressure transmitter with one-key zero clearing, which comprises an installation interface and a shell, wherein the front end of the installation interface is provided with a diaphragm, the rear end of the installation interface is provided with a connecting seat, the outer side close to the front end of the diaphragm is processed with threads, and the outer side close to the rear end of the connecting seat is processed with a hexagon; the connecting seat of the mounting interface is fixedly connected with the shell, and the mounting interface is also provided with a cold end which is arranged between the thread and the hexagonal body; the shell is internally provided with a pressure measuring element, a pressure sensing head, an elastic body, a compensating plate and a circuit board; the circuit board is fixed on the connecting seat through the first copper column; the diaphragm is connected with the elastomer through a capillary tube to form a sealed pressure leading cavity, and high-temperature silicone oil is filled in the sealed pressure leading cavity; the elastomer is welded on the pressure sensing head through argon arc, and the pressure measuring element is bonded on the elastomer; the pressure measuring element is connected with the compensating plate through a first lead; through the utility model discloses, very big market application and spreading value have.
Description
Technical Field
The utility model relates to an intelligence high temperature pressure transmitter of a key zero clearing belongs to sensor technical field.
Background
In a typical high-temperature fluid pressure measurement, because the temperature of a measured medium is generally 200-400 ℃, and the measured medium generally belongs to a medium with high viscosity and easy crystallization and blockage, a pressure transmitter which is conventionally adopted can have temperature deviation, so that when equipment does not generate pressure, the transmitter already has an output signal, and the pressure signal is easily misinterpreted to be output. In the prior art, zero adjustment potentiometers are arranged at the upper ends of the transmitter amplifiers, and when temperature drift occurs, a zero adjusting screw at the top needs to be opened, and a screwdriver is used for screwing the zero adjustment potentiometer to adjust a zero output value; the process is troublesome, the zero-setting potentiometer needs to be adjusted while the output value is observed, sometimes, a control cabinet for displaying the output value is far, and the work can be completed only by simultaneously operating a plurality of persons.
The intelligent one-key zero clearing high-temperature pressure transmitter is adopted at present, solves the series of problems and is simple and quick to operate; when temperature drift occurs, zero clearing work can be achieved only by opening the zero adjusting screw, extending the small round rod into the zero adjusting hole and pressing the zero adjusting button for 3-5 seconds.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to the above-mentioned problem, provide an intelligent high temperature pressure transmitter of a key zero clearing.
The utility model aims at realizing like this, the intelligent high temperature pressure transmitter of a key zero clearing, characterized by: the diaphragm-type air conditioner comprises an installation interface and a shell, wherein a diaphragm is installed at the front end of the installation interface, a connecting seat is installed at the rear end of the installation interface, threads are machined on the outer side close to the front end of the diaphragm, and a hexagonal body is machined on the outer side close to the rear end of the connecting seat; the connecting seat of the mounting interface is fixedly connected with the shell, and the mounting interface is also provided with a cold end which is arranged between the thread and the hexagonal body;
a pressure measuring element, a pressure sensing head, an elastic body, a compensating plate and a circuit board are arranged in the shell; the circuit board is fixed on the connecting seat through the first copper column;
the diaphragm is connected with the elastomer through a capillary tube to form a sealed pressure leading cavity, and high-temperature silicone oil is filled in the sealed pressure leading cavity; the elastomer is welded on the pressure sensing head through argon arc, and the pressure measuring element is bonded on the elastomer; the pressure measuring element is connected with the compensating plate through a first lead;
an upper cover is embedded in the upper part of the shell, the circuit board is fixed on the upper cover, and the circuit board is connected with the compensation plate through a second lead; the circuit board is connected with the electrical plug-in unit through an output line;
the circuit board is provided with a zero setting button, the upper cover is provided with a zero setting hole, the zero setting button is accurately positioned and aligned to the zero setting hole on the upper cover, and the zero setting hole is provided with a sealing nut.
The mounting interface is made of metal 304.
The diaphragm is made of 15-5PH alloy steel, and is welded to the front end of the mounting interface through argon arc.
One end of the capillary tube is welded with the diaphragm, and the other end of the capillary tube is welded with the elastic body.
The elastomer is made of 17-4PH alloy steel.
The pressure measuring element adopts a high-temperature-resistant strain gauge.
The first lead is a high temperature resistant lead.
The upper cover is provided with a second copper column, the circuit board is fixed on the second copper column, and the circuit board is fixed on the upper cover through the second copper column.
When the sealed pressure leading cavity is filled with high-temperature silicone oil, a vacuum filling process is adopted, the high-temperature silicone oil is filled into the sealed pressure leading cavity through the process capillary tube, and the top end of the process capillary tube is sealed through Yahoo welding.
The connecting seat is sleeved with a first sealing ring, a connecting seat connecting hole is formed in the shell, the connecting seat is fixed in the connecting seat connecting hole, and the connecting seat is connected with the shell in a sealing mode through the first sealing ring;
the outer circle of the upper cover is provided with a second sealing ring, the shell is provided with an upper cover connecting hole, the upper cover is fixed in the upper cover connecting hole, and the upper cover is hermetically connected with the shell through the second sealing ring;
the connecting seat is fixed with the shell through a first screw; the upper cover is fixed with the shell through a second screw.
The utility model has the advantages of reasonable and simple structure, through the utility model discloses, including installation interface (processing has diaphragm, screw thread, hexagonal, cold junction, connecting seat on the installation interface), pressure measurement component, capillary, technology capillary, high temperature silicon oil, pressure head, elastomer, compensating plate, circuit board, lead wire, shell, electric plug-in components, upper cover, zero setting hole, zero setting button, zero setting pole, sealing nut, copper post, screw, sealing washer etc.. The installation interface main body is made of metal 304 and is provided with installation threads, a hexagonal end and a cold end, a diaphragm at the front end of the installation interface is made of 15-5PH alloy steel and is welded with the front end of the installation interface through argon arc, the diaphragm and an elastic body are welded through two ends of a capillary tube to form a sealed pressure leading cavity, high-temperature silicone oil is filled into the sealed pressure leading cavity through the process capillary tube by adopting a vacuum filling process, and the top end of the process capillary tube is sealed through Yahoo welding. The elastomer is made of 17-4PH alloy steel and is welded on the pressure sensing head through argon arc, and the pressure measuring element adopts a high-temperature resistant strain gauge; the strain gauge is tightly adhered to the elastic body generating mechanical strain through a special adhesive, and the strain gauge is completely attached to the elastic body through high-temperature curing, aging and other processes to achieve the optimal pressure sensing effect; transmitting the resistance signal sensed by the pressure measuring element to a compensating plate in the shell by using a high-temperature-resistant lead; the circuit board is fixed on the upper cover through the copper column and is connected with the lead on the compensating plate, and through the signal conversion of the circuit board, the pressure signal is converted into an analog signal and is connected in the electric plug-in unit through an output line. The zero setting button is designed on the circuit board and is accurately positioned and aligned with the zero setting hole on the upper cover, and a sealing nut is arranged on the zero setting hole to ensure protection; the sealing ring is sleeved on the connecting seat and the excircle of the upper cover, and the connecting seat and the upper cover are fixed by screws on the upper part and the lower part of the shell.
The novel rational in infrastructure of this design is simple, adopts the mode and the high temperature resistant strainometer that the capillary draws pressure as the pressure measurement component, can satisfy the high viscosity medium pressure measurement in the temperature of 200~400 ℃, and measurement accuracy reaches 0.25% FS.
The structure is characterized in that: the mounting interface adopts capillary middle conduction pressure, and a cold end with a customizable length and structure is added, so that the temperature of a measuring point can not be excessively transferred into the shell; the diaphragm adopts flush membrane design and is welded at the front end of the installation interface through argon arc. The material characteristics are as follows: the liquid receiving part of the sensor is made of a stainless steel material, the material of the liquid receiving part is 304 stainless steel or alloy steel, and the material of the elastomer is 17-4PH alloy steel. Pressure measurement element: the pressure measuring element adopts a high-temperature-resistant strain gauge, the strain gauge is tightly adhered to the elastic body generating mechanical strain through a special adhesive, and the strain gauge is completely attached to the elastic body through high-temperature curing, aging and other processes to achieve the optimal pressure sensing effect. Electrical output mode: there may be output signals of 4-20MA, 0-10V, etc. One-key zero clearing key: the intelligent zero clearing can be realized only by opening the zero adjusting screw cap and pressing the zero adjusting button for 3-5 seconds by using the zero adjusting round bar.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: the device comprises an installation interface 1, a diaphragm 1-1, a thread 1-2, a hexagonal body 1-3, a cold end 1-4, a connecting seat 1-5, a pressure measuring element 2, a capillary 3, a process capillary 4, high-temperature silicon oil 5, a pressure sensing head 6, an elastic body 7, an compensation plate 8, a circuit board 9, a first lead 10-1, a second lead 10-2, an output line 10-3, a shell 11, an electrical plug 12, an upper cover 13, a zero setting hole 14, a zero setting button 15, a zero setting round rod 16, a sealing nut 17, a first copper column 18-1, a second copper column 18-2, a first screw 19-1, a second screw 19-2, a first sealing ring 20-1 and a second sealing ring 20-2.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
The one-key zero clearing intelligent high-temperature pressure transmitter comprises a mounting interface 1 and a shell 11, wherein a diaphragm 1-1 is mounted at the front end of the mounting interface 1, a connecting seat 1-5 is mounted at the rear end of the mounting interface 1, a thread 1-2 is processed at the outer side close to the front end of the diaphragm 1-1, and a hexagonal body 1-3 is processed at the outer side close to the rear end of the connecting seat 1-5; the connecting seat 1-5 of the mounting interface 1 is fixedly connected with the shell 11, the mounting interface 1 is also provided with a cold end 1-4, and the cold end 1-4 is arranged between the thread 1-2 and the hexagonal body 1-3.
A pressure measuring element 2, a pressure sensing head 6, an elastic body 7, a compensating plate 8 and a circuit board 9 are arranged in a shell 11; a first copper column 18-1 is arranged on the connecting seat 1-5, the circuit board 9 is fixed on the first copper column 18-1, and the circuit board 9 is fixed on the connecting seat 1-5 through the first copper column 18-1; the diaphragm 1-1 is connected with the elastic body 7 through the capillary 3 to form a sealed pressure leading cavity, and high-temperature silicon oil 5 is filled in the sealed pressure leading cavity; the elastic body 7 is welded on the pressure sensing head 6 through argon arc, and the pressure measuring element 2 is bonded on the elastic body 7; the pressure measuring cell 2 is connected to the compensation plate 8 via a first lead 10-1.
An upper cover 13 is embedded in the upper part of the shell 11, the circuit board 9 is fixed on the upper cover 13, and the circuit board 9 is connected with the compensation plate 8 through a second lead 10-2; the circuit board 9 is connected with the electrical plug-in 12 through an output line 10-3; a zero setting button 15 is arranged on the circuit board 9, a zero setting hole 14 is arranged on the upper cover 13, the zero setting button 15 is accurately positioned and aligned with the zero setting hole 14 on the upper cover 13, and a sealing nut 17 is arranged on the zero setting hole 14.
Further, the material of the mounting interface 1 is metal 304. The diaphragm 1-1 is made of 15-5PH alloy steel, and the diaphragm 1-1 is welded to the front end of the mounting interface 1 through argon arc welding. One end of the capillary 3 is welded with the diaphragm 1-1, and the other end is welded with the elastic body 7. The elastomer 7 is made of 17-4PH alloy steel. The pressure measuring element 2 adopts a high temperature resistant strain gauge. The first lead 10-1 is a high temperature resistant lead.
The upper cover 13 is provided with a second copper column 18-2, the circuit board 9 is fixed on the second copper column 18-2, and the circuit board 9 is fixed on the upper cover 13 through the second copper column 18-2. When the sealed pressure leading cavity is filled with the high-temperature silicone oil 5, the vacuum filling process is adopted, the high-temperature silicone oil 5 is filled into the sealed pressure leading cavity through the process capillary tube 4, and the top end of the process capillary tube 4 is sealed through Yahoo welding.
A first sealing ring 20-1 is sleeved on the connecting seat 1-5, a connecting seat connecting hole is formed in the shell 11, the connecting seat 1-5 is fixed in the connecting seat connecting hole, and the connecting seat 1-5 is hermetically connected with the shell 11 through the first sealing ring 20-1; a second sealing ring 20-2 is arranged on the excircle of the upper cover 13, an upper cover connecting hole is arranged on the shell 11, the upper cover 13 is fixed in the upper cover connecting hole, and the upper cover 13 is hermetically connected with the shell 11 through the second sealing ring 20-2; the connecting seat 1-5 is fixed with the shell 11 through a first screw 19-1; the upper cover 13 is fixed to the housing 11 by second screws 19-2. When the intelligent zero clearing device is used, the sealing screw cap 17 is opened, the zero clearing button 15 is pressed by the zero clearing round rod 16, and intelligent zero clearing can be started.
Claims (10)
1. Intelligent high temperature pressure transmitter of a key zero clearing, characterized by: the diaphragm type air conditioner comprises a mounting interface (1) and a shell (11), wherein a diaphragm (1-1) is mounted at the front end of the mounting interface (1), a connecting seat (1-5) is mounted at the rear end of the mounting interface (1), threads (1-2) are machined on the outer side of the front end close to the diaphragm (1-1), and a hexagonal body (1-3) is machined on the outer side of the rear end close to the connecting seat (1-5); a connecting seat (1-5) of the mounting interface (1) is fixedly connected with the shell (11), a cold end (1-4) is further arranged on the mounting interface (1), and the cold end (1-4) is arranged between the thread (1-2) and the hexagonal body (1-3);
a pressure measuring element (2), a pressure sensing head (6), an elastic body (7), a compensating plate (8) and a circuit board (9) are arranged in the shell (11); a first copper column (18-1) is arranged on the connecting seat (1-5), the circuit board (9) is fixed on the first copper column (18-1), and the circuit board (9) is fixed on the connecting seat (1-5) through the first copper column (18-1);
the membrane (1-1) is connected with the elastomer (7) through the capillary (3) to form a sealed pressure leading cavity, and high-temperature silicone oil (5) is filled in the sealed pressure leading cavity; the elastic body (7) is welded on the pressure sensing head (6) through argon arc, and the pressure measuring element (2) is bonded on the elastic body (7); the pressure measuring element (2) is connected with the compensating plate (8) through a first lead (10-1);
an upper cover (13) is embedded into the upper part of the shell (11), the circuit board (9) is fixed on the upper cover (13), and the circuit board (9) is connected with the compensation plate (8) through a second lead (10-2); the circuit board (9) is connected with the electrical plug-in (12) through an output line (10-3);
be equipped with zero setting button (15) on circuit board (9), be equipped with zero setting hole (14) on upper cover (13), zero setting button (15) accurate positioning aims at zero setting hole (14) on upper cover (13), installs sealing nut (17) on zero setting hole (14).
2. The clear-to-key intelligent high temperature pressure transmitter of claim 1, wherein: the mounting interface (1) is made of metal 304.
3. The clear-to-key intelligent high temperature pressure transmitter of claim 1, wherein: the diaphragm (1-1) is made of 15-5PH alloy steel, and the diaphragm (1-1) is welded to the front end of the mounting interface (1) through argon arc welding.
4. The clear-to-key intelligent high temperature pressure transmitter of claim 1, wherein: one end of the capillary tube (3) is welded with the diaphragm (1-1), and the other end of the capillary tube is welded with the elastic body (7).
5. The clear-to-key intelligent high temperature pressure transmitter of claim 1, wherein: the elastomer (7) is made of 17-4PH alloy steel.
6. The clear-to-key intelligent high temperature pressure transmitter of claim 1, wherein: the pressure measuring element (2) adopts a high-temperature-resistant strain gauge.
7. The clear-to-key intelligent high temperature pressure transmitter of claim 1, wherein: the first lead (10-1) is a high temperature resistant lead.
8. The clear-to-key intelligent high temperature pressure transmitter of claim 1, wherein: the upper cover (13) is provided with a second copper column (18-2), the circuit board (9) is fixed on the second copper column (18-2), and the circuit board (9) is fixed on the upper cover (13) through the second copper column (18-2).
9. The clear-to-key intelligent high temperature pressure transmitter of claim 1, wherein: when the sealed pressure leading cavity is filled with the high-temperature silicone oil (5), the vacuum filling process is adopted, the high-temperature silicone oil (5) is filled into the sealed pressure leading cavity through the process capillary tube (4), and the top end of the process capillary tube (4) is sealed through Yahoo welding.
10. The clear-to-key intelligent high temperature pressure transmitter of claim 1, wherein: the connecting seat (1-5) is sleeved with a first sealing ring (20-1), the shell (11) is provided with a connecting seat connecting hole, the connecting seat (1-5) is fixed in the connecting seat connecting hole, and the connecting seat (1-5) is hermetically connected with the shell (11) through the first sealing ring (20-1);
a second sealing ring (20-2) is arranged on the outer circle of the upper cover (13), an upper cover connecting hole is formed in the shell (11), the upper cover (13) is fixed in the upper cover connecting hole, and the upper cover (13) is connected with the shell (11) in a sealing mode through the second sealing ring (20-2);
the connecting seat (1-5) is fixed with the shell (11) through a first screw (19-1); the upper cover (13) is fixed with the shell (11) through a second screw (19-2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021201737.7U CN212320982U (en) | 2020-06-27 | 2020-06-27 | Intelligent high-temperature pressure transmitter capable of realizing one-key zero clearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021201737.7U CN212320982U (en) | 2020-06-27 | 2020-06-27 | Intelligent high-temperature pressure transmitter capable of realizing one-key zero clearing |
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| Publication Number | Publication Date |
|---|---|
| CN212320982U true CN212320982U (en) | 2021-01-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021201737.7U Active CN212320982U (en) | 2020-06-27 | 2020-06-27 | Intelligent high-temperature pressure transmitter capable of realizing one-key zero clearing |
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| Country | Link |
|---|---|
| CN (1) | CN212320982U (en) |
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2020
- 2020-06-27 CN CN202021201737.7U patent/CN212320982U/en active Active
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