CN217403679U - Differential pressure transmitter with protection mechanism - Google Patents
Differential pressure transmitter with protection mechanism Download PDFInfo
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- CN217403679U CN217403679U CN202222032385.2U CN202222032385U CN217403679U CN 217403679 U CN217403679 U CN 217403679U CN 202222032385 U CN202222032385 U CN 202222032385U CN 217403679 U CN217403679 U CN 217403679U
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- differential pressure
- pressure transmitter
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Abstract
The utility model belongs to the technical field of differential pressure transmitter, concretely relates to differential pressure transmitter with protection mechanism, including the differential pressure transmitter body, the top of differential pressure transmitter body is provided with the connecting pipe, and the differential pressure transmitter body has the panel board through connecting pipe fixed mounting, one end of differential pressure transmitter body is provided with two conveyer pipes that correspond input and output respectively, and the conveyer pipe passes through the protection subassembly and is connected with the differential pressure transmitter body; the protection assembly comprises a protection tube movably connected with the conveying pipe, the other end of the protection tube is communicated with the differential pressure transmitter body, a spiral electric heating wire is arranged on the outer side of the protection tube, and a shell is arranged on the outer side of the electric heating wire. The fluid heating device overcomes the defects of the prior art, heats fluid entering the differential pressure transmitter by using the protection assembly, avoids frozen fluid entering, provides protection for the differential pressure transmitter, and can improve the precision by compensating the temperature lost when the heated fluid flows.
Description
Technical Field
The utility model belongs to the technical field of differential pressure transmitter, concretely relates to differential pressure transmitter with protection mechanism.
Background
The differential pressure transmitter is a typical self-balancing detecting instrument, and overcomes the influence of adverse factors such as element materials, processing technology and the like by utilizing the working principle of negative feedback. The differential pressure transmitter is used for preventing medium in a pipeline from directly entering the transmitter, and the pressure sensing diaphragm is connected with the transmitter through a capillary filled with the medium. The device is used for measuring the liquid level, the flow and the pressure of liquid, gas or steam, and then converting the liquid, the flow and the pressure into 4-20 mA DC signals to be output.
When the outdoor working temperature is too low, the partial icing condition of the fluid occurs, and if the icing fluid enters the differential pressure transmitter, the isolating diaphragm of the sensor element is damaged, so that the transmitter is damaged.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a differential pressure transmitter with protection mechanism has overcome prior art's not enough, utilizes the protection subassembly to heat the fluid that gets into differential pressure transmitter, avoids frozen fluid to get into, provides the protection to differential pressure transmitter, and the temperature of loss when the fluid flow of simultaneous heating also can improve the precision.
In order to solve the above problems, the utility model adopts the following technical proposal:
a differential pressure transmitter with a protection mechanism comprises a differential pressure transmitter body, wherein a connecting pipe is arranged at the top end of the differential pressure transmitter body, an instrument panel is fixedly installed on the differential pressure transmitter body through the connecting pipe, two conveying pipes which respectively correspond to input and output are arranged at one end of the differential pressure transmitter body, and the conveying pipes are connected with the differential pressure transmitter body through a protection assembly;
the protection subassembly includes the protection tube with conveyer pipe swing joint, and the other end and the differential pressure transmitter body intercommunication of protection tube, the outside of protection tube is provided with spiral helicine electric heating wire, electric heating wire's the outside is provided with the casing, and the one end of casing sets firmly on differential pressure transmitter body surface, it has the heat preservation to fill between casing and the protection tube.
Further, the one end of conveyer pipe extends to in the protection tube, and the outside of conveyer pipe is provided with and has elastic sealing plug, the lateral surface of sealing plug closely laminates with the inside wall of protection tube.
Further, the outside cover of conveyer pipe is equipped with a sealed sleeve, and the outside of conveyer pipe has set firmly the baffle, the inboard and the baffle butt of one end of sealed sleeve, and the outside threaded connection of other end inside wall and protection tube.
Furthermore, the outside of protection tube sets firmly the annular fixed plate, the one end of sealing sleeve and one side surface butt of fixed plate.
Further, a temperature sensor for monitoring the temperature of the fluid in the protection tube is arranged in the protection tube.
Further, a pressure relief hole is formed in the bottom end of the differential pressure transmitter body, and a plugging piece is connected in the pressure relief hole in a threaded mode.
Compared with the prior art, the utility model, following beneficial effect has:
a differential pressure transmitter with protection mechanism, the protection subassembly heats the fluid that gets into differential pressure transmitter, avoids frozen fluid to get into, provides the protection to differential pressure transmitter, and the temperature of loss when the fluid that heats simultaneously flows compensates also can improve the precision.
Drawings
FIG. 1 is a schematic diagram of a differential pressure transmitter with a protection mechanism.
FIG. 2 is a schematic diagram of a protective assembly in a differential pressure transmitter having a protective mechanism.
FIG. 3 is a schematic diagram of a duct configuration in a differential pressure transmitter with a protection mechanism.
In the figure: 1. a differential pressure transmitter body; 2. a dashboard; 3. a connecting pipe; 4. a blocking member; 5. a housing; 6. a sealing sleeve; 7. a delivery pipe; 8. protecting the tube; 9. a heat-insulating layer; 10. an electric heating wire; 11. a fixing plate; 12. a baffle plate; 13. and (4) sealing the plug.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1-3, the differential pressure transmitter with a protection mechanism of the present invention comprises a differential pressure transmitter body 1, wherein a connecting pipe 3 is arranged at the top end of the differential pressure transmitter body 1, an instrument panel 2 is fixedly installed on the differential pressure transmitter body 1 through the connecting pipe 3, two conveying pipes 7 corresponding to input and output are arranged at one end of the differential pressure transmitter body 1, and the conveying pipes 7 are connected with the differential pressure transmitter body 1 through a protection component;
protection component includes the protection tube 8 with conveyer pipe 7 swing joint, and the other end and the differential pressure transmitter body 1 intercommunication of protection tube 8, and the outside of protection tube 8 is provided with spiral helicine electric heating wire 10, and the outside of electric heating wire 10 is provided with casing 5, and the one end of casing 5 sets firmly on differential pressure transmitter body 1 surface, it has heat preservation 9 to fill between casing 5 and the protection tube 8.
In order to improve the sealing performance, one end of the conveying pipe 7 extends into the protection pipe 8, an elastic sealing plug 13 is arranged on the outer side of the conveying pipe 7, and the outer side surface of the sealing plug 13 is tightly attached to the inner side wall of the protection pipe 8; a sealing sleeve 6 is sleeved on the outer side of the conveying pipe 7, a baffle plate 12 is fixedly arranged on the outer side of the conveying pipe 7, the inner side of one end of the sealing sleeve 6 is abutted against the baffle plate 12, and the inner side wall of the other end of the sealing sleeve is in threaded connection with the outer side of the protection pipe 8; an annular fixing plate 11 is fixedly arranged on the outer side of the protection tube 8, and one end of the sealing sleeve 6 is abutted against one side surface of the fixing plate 11.
In order to monitor the temperature of the fluid, a temperature sensor for monitoring the temperature of the fluid in the protective tube 8 is mounted in the protective tube 8.
In order to discharge fluid, the bottom end of the differential pressure transmitter body 1 is provided with a pressure relief hole, and a plugging piece 4 is connected in the pressure relief hole in a threaded manner.
To sum up, the differential pressure transmitter with the protection mechanism of the utility model, when in use, firstly, the two conveying pipes 7 are respectively inserted into the protection pipe 8, soft sealing is realized by the sealing plug 13, then the sealing sleeve 6 is screwed, the sealing sleeve 6 is in threaded connection with the protection pipe 8, after the connection is completed, the two ends of the sealing sleeve 6 are respectively abutted against the fixed plate 11 and the baffle 12, the position of the conveying pipe 7 is limited, the sealing effect is enhanced, and the looseness caused by external force pulling is avoided; when the differential pressure transmitter body 1 is monitored, the electric heating wire 10 is started to preheat, fluid enters the protection pipe 8, the temperature sensor monitors the temperature of the fluid, and when the temperature of the fluid is lower than a preset value, the electric heating wire 10 is started again to heat the fluid flowing inside the fluid, so that the condition that the fluid is not frozen is ensured. Meanwhile, the temperature of fluid flow loss can be compensated through the change of the preset temperature value, and the measurement precision of the differential pressure transmitter body 1 is improved.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (6)
1. A differential pressure transmitter with a protection mechanism comprises a differential pressure transmitter body (1), and is characterized in that: the top end of the differential pressure transmitter body (1) is provided with a connecting pipe (3), the differential pressure transmitter body (1) is fixedly provided with an instrument panel (2) through the connecting pipe (3), one end of the differential pressure transmitter body (1) is provided with two conveying pipes (7) which respectively correspond to input and output, and the conveying pipes (7) are connected with the differential pressure transmitter body (1) through a protection assembly;
the protection subassembly includes protection tube (8) with conveyer pipe (7) swing joint, and the other end and differential pressure transmitter body (1) intercommunication of protection tube (8), the outside of protection tube (8) is provided with spiral helicine electric heating wire (10), the outside of electric heating wire (10) is provided with casing (5), and the one end of casing (5) sets firmly at differential pressure transmitter body (1) surface, it has heat preservation (9) to fill between casing (5) and protection tube (8).
2. The differential pressure transmitter with the protection mechanism of claim 1, wherein: one end of the conveying pipe (7) extends into the protection pipe (8), an elastic sealing plug (13) is arranged on the outer side of the conveying pipe (7), and the outer side face of the sealing plug (13) is tightly attached to the inner side wall of the protection pipe (8).
3. The differential pressure transmitter with a protection mechanism of claim 2, wherein: the outer side of the conveying pipe (7) is sleeved with a sealing sleeve (6), the outer side of the conveying pipe (7) is fixedly provided with a baffle (12), the inner side of one end of the sealing sleeve (6) is abutted to the baffle (12), and the inner side wall of the other end of the sealing sleeve is in threaded connection with the outer side of the protection pipe (8).
4. The differential pressure transmitter with a protection mechanism of claim 3, wherein: the outer side of the protection tube (8) is fixedly provided with a circular fixing plate (11), and one end of the sealing sleeve (6) is abutted to one side surface of the fixing plate (11).
5. The differential pressure transmitter with a protection mechanism according to any one of claims 1-4, wherein: and a temperature sensor for monitoring the temperature of fluid in the protection tube (8) is arranged in the protection tube (8).
6. The differential pressure transmitter with a protection mechanism of claim 1, wherein: a pressure relief hole is formed in the bottom end of the differential pressure transmitter body (1), and a plugging piece (4) is connected in the pressure relief hole in a threaded mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222032385.2U CN217403679U (en) | 2022-08-03 | 2022-08-03 | Differential pressure transmitter with protection mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222032385.2U CN217403679U (en) | 2022-08-03 | 2022-08-03 | Differential pressure transmitter with protection mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217403679U true CN217403679U (en) | 2022-09-09 |
Family
ID=83148703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222032385.2U Active CN217403679U (en) | 2022-08-03 | 2022-08-03 | Differential pressure transmitter with protection mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217403679U (en) |
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2022
- 2022-08-03 CN CN202222032385.2U patent/CN217403679U/en active Active
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