CN211042576U - Pressure transmitter based on gas differential pressure - Google Patents
Pressure transmitter based on gas differential pressure Download PDFInfo
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- CN211042576U CN211042576U CN201922470442.3U CN201922470442U CN211042576U CN 211042576 U CN211042576 U CN 211042576U CN 201922470442 U CN201922470442 U CN 201922470442U CN 211042576 U CN211042576 U CN 211042576U
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Abstract
The utility model relates to a pressure transmitter technical field specifically is a pressure transmitter based on gaseous differential pressure, including the changer body, be equipped with the base on the changer body, changer body bottom is equipped with the connecting pipe, and the changer body passes through connecting pipe fixed mounting on the base, be equipped with the cavity in the base, be equipped with two air bags in the cavity at least, one side of base is provided with two at least emergency chambers, the emergency chamber is through the straight tube and the air bag intercommunication that set up, be equipped with the piston in the emergency chamber, be equipped with the push rod on the piston, the push rod stretches into the one end in the straight tube and is connected with the spring, the intercommunication has the U-shaped pipe on the emergency chamber, and the U. This pressure transmitter based on gas differential pressure is convenient for the staff and is known whether the pressure differential between two air sacs surpasss the rated value that detects through observing whether filling liquid overflows, and sealed effect is better, can prevent that the outside air from causing the influence to the testing result.
Description
Technical Field
The utility model relates to a pressure transmitter technical field specifically is a pressure transmitter based on gaseous differential pressure.
Background
The gas differential pressure transmitter is a transmitter for measuring the difference between the gas pressures at two ends of the transmitter and is designed by adopting an advanced integrated circuit technology, an international standard intelligent technology level design technology and a special digital and analog mixed communication technology. The intelligent gas transmitter technology greatly meets the requirement of industrial field safety monitoring on high reliability of equipment, and is widely applied to industries such as petroleum, chemical engineering, metallurgy, refining, gas transmission and distribution, biochemical medicine and the like.
Through the retrieval, chinese patent publication is CN 208060072U's patent discloses a gaseous differential pressure transmitter, including casing and pressure sensing chip, casing one end is equipped with the terminal, shells inner wall four corners all is equipped with the fixed column, housing face is equipped with the display screen, housing face is located display screen left side below and is equipped with reset button, casing one end is equipped with gaseous input tube, gaseous input tube one end is equipped with the atmospheric pressure receiver tube, atmospheric pressure receiver tube inner wall sliding connection has the pressure sensing chip. Above-mentioned patent safety chamber and external intercommunication when using for in the easy entering safety chamber of outside air, influence pressure transmitter's testing result, simultaneously, the staff can't direct observation pressure transmitter whether surpass the rated value that detects, and the outage delays to lead to equipment to damage. In view of this, we propose a pressure transmitter based on differential gas pressure.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a pressure transmitter based on gaseous differential pressure to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
a pressure transmitter based on gas differential pressure comprises a transmitter body, wherein a base is arranged on the transmitter body, a connecting pipe is arranged at the bottom end of the transmitter body, the transmitter body is fixedly installed on the base through the connecting pipe, a cavity is arranged in the base, at least two air bags are arranged in the cavity, one end, extending into the cavity, of the connecting pipe is communicated with the air bags, and the cavity is communicated with the outside through arranged through holes;
the safety device comprises a base, and is characterized in that at least two safety chambers are arranged on one side of the base, the safety chambers are communicated with an air bag through a straight pipe, a piston is arranged in each safety chamber, a push rod is arranged on each piston, one end, extending into the straight pipe, of each push rod is connected with a spring, two ends of each spring are fixedly connected with the air bag and the corresponding push rod respectively, a U-shaped pipe is communicated with each safety chamber, and filling liquid for isolating outside air is filled in each U-shaped pipe.
Preferably, the transmitter body is provided with a display panel for displaying the pressure difference.
Preferably, the upper surface of the base is provided with a threaded pipe, and the connecting pipe is in threaded connection with the base through the threaded pipe.
Preferably, a sealing rubber gasket is tightly adhered to the inner wall of the threaded pipe.
Preferably, both ends of the spring are fixed on the outer surface of the air bag and one end of the push rod in a welding mode.
Preferably, when the pressure of the gas in the air bag is too high, the piston is pushed to move in the safety chamber under the action of the pressure.
Compared with the prior art, the beneficial effects of the utility model are that:
1. this pressure transmitter based on gaseous differential pressure, when the pressure of gas in the air bag is too big, push piston removes in safe indoor under the effect of pressure, and make the intraductal filling liquid of U-shaped overflow the opening of U-shaped pipe one end, whether the staff of being convenient for spills over the rated value of learning that the pressure difference between two air bags surpasss the detection through observing the filling liquid, and can in time judge whether equipment needs the outage, prevent equipment damage, and in the effectual isolated outside air of filling liquid ability gets into the air bag, prevent that the outside air from causing the influence to the testing result.
2. This pressure transmitter based on gas differential pressure, the changer body passes through in the screwed pipe of connecting pipe thread tightening on the base, and the sealed cushion that the inner wall of screwed pipe set up has good gas tightness, is convenient for utilize sealed cushion increase screwed pipe and the sealed effect between the connecting pipe.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a front view of the overall structure of the present invention;
FIG. 3 is an enlarged view of the structure A in FIG. 2 according to the present invention;
FIG. 4 is an enlarged view of the structure B in FIG. 2 according to the present invention;
fig. 5 is a schematic structural view of a transmitter body in the present invention;
fig. 6 is a schematic structural view of the middle base of the present invention.
In the figure: 1. a transmitter body; 11. a connecting pipe; 12. a display panel; 2. a base; 21. a cavity; 22. an air bag; 221. a through hole; 23. a threaded pipe; 231. sealing the rubber gasket; 3. a safety chamber; 31. a straight pipe; 32. a piston; 321. a push rod; 322. a spring; 33. a U-shaped tube; 331. and filling liquid.
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.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
In addition, in the description of the present invention, "at least two" means two or more unless specifically limited otherwise.
Referring to fig. 1-6, the present invention provides a technical solution:
a pressure transmitter based on gas differential pressure comprises a transmitter body 1, a base 2 is arranged on the transmitter body 1, a connecting pipe 11 is arranged at the bottom end of the transmitter body 1, the transmitter body 1 is fixedly arranged on the base 2 through a connecting pipe 11, a cavity 21 is arranged in the base 2, at least two air bags 22 are arranged in the cavity 21, one end of the connecting pipe 11 extending into the cavity 21 is communicated with the air bags 22, the cavity 21 is communicated with the outside through a through hole 221, at least two safety chambers 3 are arranged on one side of the base 2, the safety chambers 3 are communicated with the air bag 22 through a straight pipe 31, a piston 32 is arranged in each safety chamber 3, a push rod 321 is arranged on each piston 32, one end of each push rod 321 extending into the straight pipe 31 is connected with a spring 322, two ends of the spring 322 are respectively fixedly connected with the air bag 22 and the push rod 321, the safety chamber 3 is communicated with a U-shaped pipe 33, and the U-shaped pipe 33 is filled with filling liquid 331 for isolating the outside air.
In this embodiment, the number of the air cells 22 and the number of the safety chambers 3 are preferably 2, and the air cells are used for detecting a differential pressure between the gases introduced into the two air cells 22.
Further, the transmitter body 1 is provided with a display panel 12 for displaying the differential pressure, so that the differential pressure can be displayed more visually.
Furthermore, the upper surface of base 2 is equipped with screwed pipe 23, and connecting pipe 11 passes through screwed pipe 23 and base 2 threaded connection, and the surface of connecting pipe 11 bottom is equipped with the external screw thread with screwed pipe 23 looks adaptation for connecting pipe 11 threaded connection is on screwed pipe 23, and the installation of the changer body 1 of being convenient for is fixed.
In addition, the inner wall of the threaded pipe 23 is tightly bonded with the sealing rubber pad 231, the sealing rubber pad 231 can be made of rubber, the material has good wear resistance and corrosion resistance, the air tightness is good, and the sealing effect between the threaded pipe 23 and the connecting pipe 11 is increased by the aid of the sealing rubber pad 231.
It is noted that both ends of the spring 322 are fixed to the outer surface of the air bag 22 and one end of the push rod 321 by welding.
Specifically, when the pressure of the gas in the air bag 22 is too high, the piston 32 is pushed to move in the safety chamber 3 under the action of the pressure, in the pushing process of the piston 32, the push rod 321 moves in the straight tube 31 and stretches the spring 322, the piston 32 discharges the air in the safety chamber 3 through the U-shaped tube 33, and the filling liquid 331 in the U-shaped tube 33 overflows an opening at one end of the U-shaped tube 33, so that a worker can know whether the pressure difference between the two air bags 22 exceeds a detected rated value by observing whether the filling liquid 331 overflows, and the filling liquid 331 can effectively isolate the external air from entering the air bag 22, thereby preventing the external air from influencing a detection result.
When the pressure transmitter based on gas differential pressure of the embodiment is used, the transmitter body 1 is electrified to work, gas to be detected is input into the air bag 22 through the through hole 221, when the pressure of the gas in the air bag 22 is too high, the piston 32 is pushed to move in the safety chamber 3 under the action of the pressure, in the pushing process of the piston 32, the push rod 321 moves in the straight pipe 31 and stretches the spring 322, the piston 32 discharges the air in the safety chamber 3 through the U-shaped pipe 33, and the filling liquid 331 in the U-shaped pipe 33 overflows the opening at one end of the U-shaped pipe 33, so that a worker can know whether the pressure difference between the two air bags 22 exceeds the detected rated value by observing whether the filling liquid 331 overflows or not, can timely judge whether the equipment needs to be powered off or not, prevent the equipment from being damaged, and the filling liquid 331 can effectively isolate external air from entering the air bags 22, the device has the advantages of preventing the influence of the outside air on the detection result, along with simple structure, convenient use and convenient popularization and promotion.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A pressure transmitter based on gas differential pressure, includes transmitter body (1), its characterized in that: the transmitter comprises a transmitter body (1), and is characterized in that a base (2) is arranged on the transmitter body (1), a connecting pipe (11) is arranged at the bottom end of the transmitter body (1), the transmitter body (1) is fixedly installed on the base (2) through the connecting pipe (11), a cavity (21) is arranged in the base (2), at least two air bags (22) are arranged in the cavity (21), one end, extending into the cavity (21), of the connecting pipe (11) is communicated with the air bags (22), and the cavity (21) is communicated with the outside through a through hole (221);
one side of base (2) is provided with two at least safety chambers (3), safety chamber (3) through straight tube (31) that sets up with air bag (22) intercommunication, be equipped with piston (32) in safety chamber (3), be equipped with push rod (321) on piston (32), push rod (321) stretch into one end in straight tube (31) is connected with spring (322), just the both ends of spring (322) respectively in air bag (22) and push rod (321) fixed connection, the intercommunication has U-shaped pipe (33) on safety chamber (3), just U-shaped pipe (33) are equipped with isolated outside air's filling liquid (331).
2. The differential gas pressure-based pressure transmitter of claim 1, wherein: and a display panel (12) for displaying the pressure difference is arranged on the transmitter body (1).
3. The differential gas pressure-based pressure transmitter of claim 1, wherein: the upper surface of base (2) is equipped with screwed pipe (23), just connecting pipe (11) pass through screwed pipe (23) with base (2) threaded connection.
4. The differential gas pressure-based pressure transmitter of claim 3, wherein: and a sealing rubber gasket (231) is tightly adhered to the inner wall of the threaded pipe (23).
5. The differential gas pressure-based pressure transmitter of claim 1, wherein: and two ends of the spring (322) are fixed on the outer surface of the air bag (22) and one end of the push rod (321) in a welding mode.
6. The differential gas pressure-based pressure transmitter of claim 1, wherein: when the pressure of the gas in the air bag (22) is excessive, the piston (32) is pushed to move in the safety chamber (3) under the action of the pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922470442.3U CN211042576U (en) | 2019-12-31 | 2019-12-31 | Pressure transmitter based on gas differential pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922470442.3U CN211042576U (en) | 2019-12-31 | 2019-12-31 | Pressure transmitter based on gas differential pressure |
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| Publication Number | Publication Date |
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| CN211042576U true CN211042576U (en) | 2020-07-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922470442.3U Active CN211042576U (en) | 2019-12-31 | 2019-12-31 | Pressure transmitter based on gas differential pressure |
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| CN (1) | CN211042576U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112138453A (en) * | 2020-09-15 | 2020-12-29 | 安徽朗坤物联网有限公司 | Lamination filter for high-standard farmland liquid manure system |
-
2019
- 2019-12-31 CN CN201922470442.3U patent/CN211042576U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112138453A (en) * | 2020-09-15 | 2020-12-29 | 安徽朗坤物联网有限公司 | Lamination filter for high-standard farmland liquid manure system |
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