CN113567041A - Anti-freezing damage structure for water pressure transmitter and water pressure transmitter - Google Patents
Anti-freezing damage structure for water pressure transmitter and water pressure transmitter Download PDFInfo
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- CN113567041A CN113567041A CN202110979333.3A CN202110979333A CN113567041A CN 113567041 A CN113567041 A CN 113567041A CN 202110979333 A CN202110979333 A CN 202110979333A CN 113567041 A CN113567041 A CN 113567041A
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- water pressure
- pressure transmitter
- isolation buffer
- water
- cavity
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/06—Means for preventing overload or deleterious influence of the measured medium on the measuring device or vice versa
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/08—Means for indicating or recording, e.g. for remote indication
- G01L19/086—Means for indicating or recording, e.g. for remote indication for remote indication
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- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention discloses an anti-freezing damage structure for a water pressure transmitter, which is arranged in a water pressure cavity of the water pressure transmitter and comprises an isolation buffer sheet made of silica gel and/or thermoplastic elastomer, wherein the isolation buffer sheet is arranged facing to a water inlet of the water pressure transmitter and is continuously bent into a concave-convex corrugated shape, so that the section of the isolation buffer sheet is corrugated, and two ends of the isolation buffer sheet are connected with the water pressure cavity. According to the anti-freezing damage structure for the water pressure transmitter, the isolation buffer sheet made of silica gel and/or thermoplastic elastomer and facing the water inlet is arranged in the water pressure cavity, and the isolation buffer sheet is bent to be in a concave-convex corrugated shape, so that when water is frozen at a low temperature and the volume is rapidly increased and the pressure is rapidly increased, the isolation buffer sheet can deform to maintain the dynamic balance of the pressure, the influence of external unstable factors is greatly reduced, and the reliability is improved. The invention also discloses a water pressure transmitter.
Description
Technical Field
The invention relates to the technical field of water feeding and draining digital monitoring, in particular to an anti-freezing damage structure for a water pressure transmitter and the water pressure transmitter.
Background
With the improvement of economic level and the rapid development of internet of things in recent years, environmental management and property management are rapidly developed in an intelligent and internet of things way, the research and development of sensors and digital transmission become an important part of the intelligent and internet of things management, wherein the digital monitoring of water supply and drainage also has good market prospect, and the water pressure transmitter is indispensable basic equipment for the digital monitoring of water supply and drainage.
Traditional water pressure transmitter can arouse the water in its water pressure wall to freeze under the condition that temperature is low, and the fixed ice-cube after freezing can lead to the fact very big pressure for the isolation diaphragm to influence water pressure transmitter's measurement accuracy, serious still can cause water pressure transmitter's permanent damage, consequently, traditional water pressure transmitter need prevent frostbite at winter during operation.
In order to prevent damage caused by low-temperature freezing, the conventional hydraulic pressure transmitter generally uses three methods:
A. carrying out steam tracing; B. a heat preservation device box; C. an electrical heating cable; however, all of the above three methods have various degrees of disadvantages.
At present, part of water pressure transmitters are not provided with auxiliary equipment for preventing low-temperature freezing damage, and when the temperature suddenly changes to zero in winter, the water meter installation area can be frozen; and the stocked property water supply, the old water supply and drainage systems in cities and the like are not provided with auxiliary equipment for preventing low-temperature freezing, so that the water pressure transmitter can be damaged due to freezing in winter, or the auxiliary equipment for preventing low-temperature freezing is arranged, and the heat insulation and preservation can be invalid due to the fault of the auxiliary equipment, unstable power supply and the like.
Disclosure of Invention
The invention aims to solve the technical problem of providing an anti-freezing damage structure for a water pressure transmitter, which is suitable for the water pressure transmitter under severe cold freezing weather conditions, and auxiliary equipment for preventing low-temperature freezing is not installed or is inconvenient to install outside the water pressure transmitter, so that the influence of external unstable factors on the work of the water pressure transmitter can be greatly reduced, and the work reliability of the water pressure transmitter is improved.
In order to solve the technical problems, the invention aims to realize the following technical scheme: the utility model provides a water pressure changer is with preventing damage structure that freezes sets up in water pressure changer's water pressure cavity, including keeping apart the buffer chip, keep apart the buffer chip and make by silica gel and/or thermoplastic elastomer, keep apart the buffer chip towards water pressure changer's water inlet setting just keep apart the buffer chip and buckle in succession and be unsmooth corrugate, so that keep apart the cross-section of buffer chip and be the corrugate, keep apart the both ends of buffer chip with water pressure changer's water pressure cavity is connected.
The further technical scheme is as follows: the anti-freezing damage structure for the water pressure transmitter further comprises a metal partition plate arranged in a water pressure cavity of the water pressure transmitter, the metal partition plate comprises a main plate and a side edge, and the side edge is connected with the edge of the isolation buffer sheet so that the isolation buffer sheet is fixedly sealed in the water pressure cavity of the water pressure transmitter.
The further technical scheme is as follows: a filling liquid cavity is formed between the metal partition plate and the isolation buffer sheet, and filling liquid with the freezing point lower than 0 ℃ is filled in the filling liquid cavity.
The further technical scheme is as follows: the filling liquid is silicone oil.
The further technical scheme is as follows: a plurality of through holes are formed in the metal partition plate.
The further technical scheme is as follows: one side of the edge of the isolation buffer sheet, which faces the water inlet of the water pressure transmitter, protrudes to form a bulge fixedly sealed with the inner wall of the water pressure cavity of the water pressure transmitter.
In addition, the technical problem to be solved by the present invention is to provide a water pressure transmitter which is suitable for severe cold freezing weather conditions and has no or inconvenient installation of auxiliary equipment for preventing low temperature freezing outside, so as to greatly reduce the influence of external unstable factors on the operation of the water pressure transmitter and improve the reliability of the operation of the water pressure transmitter.
In order to solve the technical problems, the invention aims to realize the following technical scheme: the utility model provides a water pressure changer, including water pressure cavity metal casing and put into in the pressure sensor in the rear end portion of water pressure cavity metal casing, form the water pressure cavity between the inboard of water pressure cavity metal casing and the outside of pressure sensor's front end, be provided with the aforesaid in the water pressure cavity water pressure changer with anti-freezing damage structure.
The further technical scheme is as follows: the isolation buffer sheet is clamped on the inner side of the water pressure cavity.
The further technical scheme is as follows: and a stop block closely connected with the edge of the isolation buffer sheet is formed in the metal shell of the water pressure cavity.
The invention has the beneficial technical effects that: the anti-freezing damage structure for the water pressure transmitter is characterized in that the isolation buffer sheet made of silica gel and/or thermoplastic elastomer and facing the water inlet is arranged in the water pressure cavity, and is continuously bent into a concave-convex corrugated shape, so that when the volume of water frozen at low temperature is rapidly increased and the pressure is rapidly increased, the isolation buffer sheet can deform to a corresponding degree to maintain the dynamic balance of the pressure, and simultaneously plays a certain buffer effect on the water hammer effect, so that the anti-freezing damage structure is suitable for the water pressure transmitter which is not provided with or is inconvenient to be provided with auxiliary equipment for preventing low-temperature freezing outside the water pressure transmitter under severe and cold freezing weather conditions, plays a good protection role on the reliability of the equipment, and can greatly reduce the condition that the wireless low-power consumption transmitter which cannot be provided with external heat insulation and heating equipment due to volume and electric quantity is damaged due to freezing, or the probability of freezing damage of the water pressure transmitter caused by abnormal work of the heat insulation and heating equipment is greatly reduced, the influence of external unstable factors on the water pressure transmitter is greatly reduced, the working reliability of the water pressure transmitter is improved, the measuring accuracy of the water pressure transmitter is ensured, the water pressure transmitter can be prevented from being damaged due to external factors, and the service life is long. The water pressure transmitter has the functions, is wide in application range and has good market benefits.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a front view of an anti-freezing damage structure of a hydraulic pressure transmitter according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of an anti-freezing damage structure of a hydraulic transmitter according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view of an anti-freeze damage configuration of a hydraulic transmitter according to another embodiment of the present invention;
fig. 4 is a schematic diagram of an internal structure of a hydraulic pressure transmitter according to an embodiment of the present invention (no water state);
FIG. 5 is a schematic diagram of the internal structure of a hydraulic pressure transmitter (liquid water) according to an embodiment of the present invention;
fig. 6 is a schematic diagram of an internal structure of a hydraulic pressure transmitter (frozen water) according to an embodiment of the present invention.
The labels in the figures illustrate: 10. the water pressure transmitter is provided with an anti-freezing damage structure; 11. an isolation buffer sheet; 111. a protrusion; 12. a metal separator; 121. a main board; 122. a side edge; 14. filling liquid; 20. a hydraulic pressure transmitter; 21. a hydraulic cavity metal housing; 22. a pressure sensor; 221. a pressure sensor metal housing; 222. a vacuum reference chamber; 223. an isolation diaphragm; 224. a silicone oil; 23. a water pressure cavity; 24. a water inlet; 25. an insulator; 26. measuring the diaphragm; 27. fixing the polar plate; 28. and an electrode lead.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.
Referring to fig. 1 to 2, fig. 1 is a front view of an anti-freezing damage structure for a water pressure transmitter according to an embodiment of the present invention, in which the anti-freezing damage structure 10 for a water pressure transmitter is disposed in a water pressure cavity of the water pressure transmitter, and includes an isolation buffer sheet 11, the isolation buffer sheet 11 is made of silica gel, the isolation buffer sheet 11 is disposed facing a water inlet of the water pressure transmitter, and the isolation buffer sheet 11 is continuously bent into a concave-convex corrugated shape, so that a cross section of the isolation buffer sheet 11 is corrugated, and two ends of the isolation buffer sheet 11 are connected to the water pressure cavity of the water pressure transmitter.
Wherein, the water pressure cavity of water pressure transmitter can be cylindricly, water pressure transmitter is with the main view plane of the isolation buffer piece 11 of anti-freezing damage structure 10 and be circular structure, and in some embodiments, isolation buffer piece 11 is made by thermoplastic elastomer or by silica gel and thermoplastic elastomer. The isolation buffer sheet 11 is made of silica gel and/or thermoplastic elastomer, so that the isolation buffer sheet 11 has good self-recovery elasticity, is resistant to corrosion of oil esters and tap water contents (such as hypochlorous acid), and is resistant to aging. The isolation buffer sheet 11 with self-recovery elasticity is continuously bent to be corrugated, so that the isolation buffer sheet 11 can be deformed to a certain extent without being damaged, and the dynamic balance of pressure is adjusted.
Specifically, in this embodiment, a protrusion 111 fixedly sealed with the inner wall of the water pressure cavity of the water pressure transmitter is formed by protruding one side of the edge of the isolation buffer sheet 11 facing the water inlet of the water pressure transmitter. Form protruding 111 and seal with the connection of the water pressure cavity of fastening isolation buffer piece 11 and water pressure transmitter through the edge in isolation buffer piece 11, avoid the water in water inlet and the water pressure cavity to flow into the opposite side of isolation buffer piece 11 for isolation buffer piece 11's installation is more firm.
The anti-freezing damage structure for the water pressure transmitter is characterized in that the isolation buffer sheet made of silica gel and/or thermoplastic elastomer and facing the water inlet is arranged in the water pressure cavity, and is continuously bent into a concave-convex corrugated shape, so that when the volume of water frozen at low temperature is rapidly increased and the pressure is rapidly increased, the isolation buffer sheet can deform to a corresponding degree to maintain the dynamic balance of the pressure, and simultaneously plays a certain buffer effect on the water hammer effect, so that the anti-freezing damage structure is suitable for the water pressure transmitter which is not provided with or is inconvenient to be provided with auxiliary equipment for preventing low-temperature freezing outside the water pressure transmitter under severe and cold freezing weather conditions, plays a good protection role on the reliability of the equipment, and can greatly reduce the condition that the external temperature insulation and the wireless low power consumption of heating equipment are damaged due to the fact that the volume and the electric quantity cannot be provided with the external temperature insulation transmitter, or the probability of freezing damage of the water pressure transmitter caused by abnormal work of the heat insulation and heating equipment is greatly reduced, the influence of external unstable factors on the water pressure transmitter is greatly reduced, the working reliability of the water pressure transmitter is improved, the measuring accuracy of the water pressure transmitter is ensured, the water pressure transmitter can be prevented from being damaged due to external factors, and the service life is long.
Referring to fig. 3, fig. 3 is a cross-sectional view of an anti-freezing damage structure of a water pressure transmitter according to another embodiment of the present invention, where the anti-freezing damage structure 10 for a water pressure transmitter further includes a metal partition 12 disposed in a water pressure cavity of the water pressure transmitter, the metal partition 12 includes a main plate 121 and a side edge 122, and the side edge 122 is connected to an edge of the isolation buffer sheet 11, so that the isolation buffer sheet 11 is fixedly sealed in the water pressure cavity of the water pressure transmitter.
Wherein, the figure of side 122 is two and set up perpendicularly respectively in the border at mainboard 121's both ends presses to the water pressure cavity inner wall of water pressure changer through metal partition 12 in order to keep apart the edge of buffer chip 11 to the fastening keeps apart being connected of buffer chip 11 and water pressure changer and seals, avoids the water in water inlet and the water pressure cavity to flow into the opposite side of keeping apart buffer chip 11, simultaneously, can prevent to keep apart buffer chip 11 and pressure sensor contact through setting up metal partition 12. The metal separator 12 may be made of stainless steel.
Specifically, a filling liquid cavity is formed between the metal partition plate 12 and the isolation buffer sheet 11, and filling liquid 14 with a freezing point lower than 0 ℃ is filled in the filling liquid cavity. Wherein, under the general condition, the freezing point of water is 0 ℃, the freezing point of filling liquid is less than the freezing point of water, can be when water in the water pressure cavity changes solid state (freezes), filling liquid still is liquid state and has stronger mobility, and when making water change solid state (freeze), the water volume grow, pressure increases fast, under the effect of pressure, keep apart buffer plate 11 and bulge in filling liquid cavity, the volume of filling liquid cavity dwindles, the pressure grow, but because filling liquid still has stronger mobility and can not receive pressure and temperature variation and obviously change, do not produce the material and the pressure sensor contact of any solid state form, thereby avoid pressure sensor to take place the deformation and damage, can transmit pressure to pressure sensor simultaneously. The filling liquid can adopt liquid with low freezing point and stable pressure and temperature properties, the freezing point of the filling liquid can be lower than 0 ℃ such as-40 ℃ or-22 ℃, the filling liquid cavity is formed and filled with the filling liquid 14, so that when the external pressure changes, the isolation buffer sheet 11 can generate deformation with corresponding degree, such as protrusion or depression, the dynamic balance of the pressure between the water and the filling liquid 14 is always maintained, and the filling liquid 14 is used as a pressure sensor again, so that the pressure sensor can accurately and reliably measure the actual pressure. Preferably, the filling liquid 14 can be silicone oil, which has high fluidity, does not undergo obvious slowing and volume change in normal temperature environment, and is not easy to corrode metal, silicone and thermoplastic elastomer after long-time contact.
Specifically, the main plate 121 is formed with a plurality of through holes for facilitating the flow of the filling liquid 14 therethrough.
The anti-freezing damage structure for the water pressure transmitter is characterized in that the isolation buffer sheet made of silica gel and/or thermoplastic elastomer and facing the water inlet is arranged in the water pressure cavity, and is continuously bent into a concave-convex corrugated shape, so that when the volume of water frozen at low temperature is rapidly increased and the pressure is rapidly increased, the isolation buffer sheet can deform to a corresponding degree to maintain the dynamic balance of the pressure, and simultaneously plays a certain buffer effect on the water hammer effect, so that the anti-freezing damage structure is suitable for the water pressure transmitter which is not provided with or is inconvenient to be provided with auxiliary equipment for preventing low-temperature freezing outside the water pressure transmitter under severe and cold freezing weather conditions, plays a good protection role on the reliability of the equipment, and can greatly reduce the condition that the external temperature insulation and the wireless low power consumption of heating equipment are damaged due to the fact that the volume and the electric quantity cannot be provided with the external temperature insulation transmitter, or the probability of freezing damage of the water pressure transmitter caused by abnormal work of the heat insulation and heating equipment is greatly reduced, the influence of external unstable factors on the water pressure transmitter is greatly reduced, the working reliability of the water pressure transmitter is improved, the measuring accuracy of the water pressure transmitter is ensured, the water pressure transmitter can be prevented from being damaged due to external factors, and the service life is long. Simultaneously, through setting up metal baffle just metal baffle includes mainboard and side, presses to the inner wall of the water pressure cavity of water pressure changer through metal baffle in order to keep apart the edge of buffer piece, and fastens and keeps apart buffer piece and water pressure changer's being connected and seal, avoids water in water inlet and the water pressure cavity to keep apart the opposite side of buffer piece, moreover, can prevent to keep apart buffer piece and pressure sensor contact through setting up metal baffle.
Referring to fig. 4 to 6, fig. 4 is a schematic diagram of an internal structure of a water pressure transmitter in an anhydrous state according to an embodiment of the present invention, in which the water pressure transmitter 20 includes a water pressure cavity metal shell 21 and a pressure sensor 22 disposed in a rear end portion of the water pressure cavity metal shell 21, a water pressure cavity 23 is formed between an inner side of the water pressure cavity metal shell 21 and an outer side of a front end of the pressure sensor 22, and the anti-freezing damage structure 10 for the water pressure transmitter is disposed in the water pressure cavity 23.
Wherein, the water pressure transmitter sets up towards water inlet 24 of water pressure transmitter 20 with isolation buffer piece 11 of anti-freezing damage structure 10, pressure sensor 22 includes pressure sensor metal casing 221, insulator 25, silicon oil 224 and measurement diaphragm 26, be equipped with vacuum benchmark chamber 222 in the pressure sensor metal casing 221 of water pressure transmitter 20, separate out a detection cavity through isolation diaphragm 223 in the vacuum benchmark chamber 222, insulator 25, silicon oil 224 and measurement diaphragm 26 place in detect the cavity, the both sides of measuring diaphragm 26 are connected with fixed polar plate 27 respectively, it has electrode wire 28 to let in the detection cavity of water pressure transmitter 20, and electrode wire 28 is connected with corresponding fixed polar plate 27 respectively in order to be connected with the both sides of measuring diaphragm 26 respectively. Water pressure cavity 23 is located in water pressure cavity metal casing 21 and between water inlet 24 and the pressure sensor 22 that are located water pressure transmitter 20, water pressure cavity 23 with water inlet 24 intercommunication, the outside of water pressure cavity 23 is isolated with the surrounding environment through water pressure cavity metal casing 21 to ensure the pressure in water pressure cavity 23. The insulator 25 may be made of ceramic. The measurement working principle of the water pressure transmitter 20 is as follows: two pressures of a medium (water) to be detected are introduced into a high pressure chamber and a low pressure chamber, act on the isolation diaphragms 223 on two sides of the sensitive element (the measuring diaphragm 26), the pressures are transmitted to two sides of the measuring diaphragm 26 through the isolation diaphragms 223 and the silicon oil 224, a capacitor is respectively formed between the measuring diaphragm 26 and the corresponding fixed polar plate 27, a voltage signal of the capacitor is transmitted to a control circuit board in external control equipment through the corresponding electrode lead 28 for compensation adjustment, and is transmitted to a control unit after A/D conversion, and transmission detection of a water pressure parameter is completed.
The water pressure transmitter 20 is characterized in that the isolation buffer sheet 11 made of silica gel and/or thermoplastic elastomer facing the water inlet 24 is arranged in the water pressure cavity 23, and the isolation buffer sheet 11 is continuously bent into a concave-convex corrugated shape, so that when water is frozen at low temperature and the volume is rapidly increased and the pressure is rapidly increased, the isolation buffer sheet 11 can be deformed to a corresponding degree to maintain the dynamic balance of the pressure, and simultaneously a certain buffer effect is achieved on the water hammer effect, so that the water pressure transmitter is suitable for severe and cold freezing climate conditions, has a good protection effect on the reliability of equipment, can greatly reduce the condition that a wireless low-power-consumption transmitter which cannot be provided with external heat insulation and heating equipment is damaged due to freezing due to volume and electric quantity, or greatly reduce the probability of water pressure freezing damage caused by abnormal operation of the heat insulation and the heating equipment, and greatly reduce the influence of external unstable factors on the water pressure transmitter, the reliability of the work of the water pressure transmitter is improved, the measuring accuracy of the water pressure transmitter is ensured, the water pressure transmitter can be prevented from being damaged due to external factors, and the service life is long.
Preferably, in this embodiment, the anti-freezing damaged structure 10 for the water pressure transmitter includes an isolation buffer sheet 11 and a metal partition 12, the anti-freezing damaged structure 10 for the water pressure transmitter is disposed in the water pressure cavity 23 in a state that the isolation buffer sheet 11 faces the water inlet 24 of the water pressure transmitter 20 and the main board 121 of the metal partition 12 faces the pressure sensor 22, the filling liquid cavity is filled with the filling liquid 14, and the filling liquid 14 flows in through the through hole of the main board 121 and contacts with one of the isolation diaphragms 223. When water is injected into the water inlet 24, the isolation buffer sheet 11 is deformed to a small extent. When the water in the water pressure cavity 23 is changed into a solid state (frozen), the volume of the water is increased, the pressure is increased rapidly, under the action of the pressure, the isolation buffer sheet 11 protrudes towards the interior of the filling liquid cavity to maintain the dynamic balance of the pressure, so that the volume of the filling liquid cavity is reduced, the pressure is increased, and the filling liquid 14 flows to one of the isolation diaphragms 223 through the through hole to transfer the pressure for the detection of the measuring diaphragm 26.
Specifically, the isolation buffer sheet 11 is clamped on the inner side of the water pressure cavity 23. Wherein, a groove position for clamping the protrusion 111 of the isolation buffer sheet 11 is formed in the water pressure cavity 23. The edge of the isolation buffer sheet 11 can extend outwards to form a connecting end connected with the inner side of the water pressure cavity 23, and the protrusion 111 is located at the connecting end.
Specifically, a stopper closely connected with the edge of the isolation buffer sheet 11 is formed in the hydraulic cavity metal shell 21. The water pressure cavity metal shell 21 forms a stop block connected with the edge of the isolation buffer sheet 11, the pressure sensor metal shell 221 is tightly connected with the inner side thread of the rear end part of the water pressure cavity metal shell 21, so that the front end of the pressure sensor metal shell 221 presses the anti-freezing damage structure 10 for the water pressure transmitter to the stop block to enable the edge of the isolation buffer sheet 11 to be tightly connected with the stop block and sealed, water in a water inlet and the water pressure cavity is prevented from flowing into the other side of the isolation buffer sheet 11, and the isolation buffer sheet 11 is more stably installed.
In summary, the anti-freezing damage structure for the water pressure transmitter of the invention arranges the isolation buffer sheet made of silica gel and/or thermoplastic elastomer facing the water inlet in the water pressure cavity, and continuously bends the isolation buffer sheet to be in the shape of concave-convex corrugation, so that when the water is frozen at low temperature and the volume is rapidly increased and the pressure is rapidly increased, the isolation buffer sheet can generate deformation with corresponding degree to maintain the dynamic balance of the pressure, and simultaneously plays a certain buffer effect on the water hammer effect, so as to be suitable for the water pressure transmitter which is not provided or is inconvenient to be provided with auxiliary equipment for preventing low temperature freezing outside the water pressure transmitter under severe and cold freezing weather conditions, play a good protection role on the reliability of the equipment, and greatly reduce the condition that the wireless low-power transmitter which is not provided with external heat insulation and heating equipment is damaged due to freezing because of volume and electric quantity, or the probability of freezing damage of the water pressure transmitter caused by abnormal work of the heat insulation and heating equipment is greatly reduced, the influence of external unstable factors on the water pressure transmitter is greatly reduced, the working reliability of the water pressure transmitter is improved, the measuring accuracy of the water pressure transmitter is ensured, the water pressure transmitter can be prevented from being damaged due to external factors, and the service life is long. The water pressure transmitter has the functions, is wide in application range and has good market benefits.
While the invention has been described with reference to specific embodiments, the invention is not limited thereto, and various equivalent modifications and substitutions can be easily made by those skilled in the art within the technical scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. The utility model provides a water pressure changer is with preventing damage structure that freezes sets up in water pressure changer's water pressure cavity, a serial communication port, including the isolation buffer piece, the isolation buffer piece is made by silica gel and/or thermoplastic elastomer, the isolation buffer piece sets up towards water pressure changer's water inlet just the isolation buffer piece is buckled in succession and is unsmooth corrugate, so that the corrugate is in the cross-section of isolation buffer piece, the both ends of isolation buffer piece with water pressure changer's water pressure cavity is connected.
2. The anti-freezing damaged structure for the water pressure transmitter according to claim 1, further comprising a metal partition plate disposed in the water pressure cavity of the water pressure transmitter, wherein the metal partition plate comprises a main plate and a side edge, and the side edge is connected with an edge of the isolation buffer sheet, so that the isolation buffer sheet is fixedly sealed in the water pressure cavity of the water pressure transmitter.
3. The anti-freezing damage structure for the hydraulic pressure transmitter according to claim 2, wherein a filling liquid cavity is formed between the metal partition plate and the isolation buffer sheet, and the filling liquid cavity is filled with a filling liquid with a freezing point lower than 0 ℃.
4. The anti-freezing damage structure for the hydraulic pressure transmitter according to claim 3, wherein the filling liquid is silicone oil.
5. The anti-freezing damage structure for the hydraulic pressure transmitter according to claim 2, wherein the main board is formed with a plurality of through holes.
6. The anti-freezing damage structure for the water pressure transmitter according to claim 1, wherein a protrusion fixedly sealed with an inner wall of a water pressure cavity of the water pressure transmitter is formed by protruding one side of the edge of the isolation buffer sheet facing the water inlet of the water pressure transmitter.
7. A water pressure transmitter, characterized by comprising a water pressure cavity metal shell and a pressure sensor arranged in the rear end part of the water pressure cavity metal shell, wherein a water pressure cavity is formed between the inner side of the water pressure cavity metal shell and the outer side of the front end of the pressure sensor, and the water pressure cavity is internally provided with the anti-freezing damage structure for the water pressure transmitter according to any one of claims 1 to 6.
8. The water pressure transducer as recited in claim 7 wherein the isolation bumper is snap-fit to the inside of the water pressure chamber.
9. The hydraulic transducer of claim 7, wherein the metal housing of the hydraulic chamber has a stop formed therein for engaging an edge of the isolation damping strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110979333.3A CN113567041A (en) | 2021-08-25 | 2021-08-25 | Anti-freezing damage structure for water pressure transmitter and water pressure transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110979333.3A CN113567041A (en) | 2021-08-25 | 2021-08-25 | Anti-freezing damage structure for water pressure transmitter and water pressure transmitter |
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| CN113567041A true CN113567041A (en) | 2021-10-29 |
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| CN202110979333.3A Pending CN113567041A (en) | 2021-08-25 | 2021-08-25 | Anti-freezing damage structure for water pressure transmitter and water pressure transmitter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117129137A (en) * | 2023-10-24 | 2023-11-28 | 常州天利智能控制股份有限公司 | Pressure transmitter for chemical pipeline |
-
2021
- 2021-08-25 CN CN202110979333.3A patent/CN113567041A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117129137A (en) * | 2023-10-24 | 2023-11-28 | 常州天利智能控制股份有限公司 | Pressure transmitter for chemical pipeline |
| CN117129137B (en) * | 2023-10-24 | 2023-12-26 | 常州天利智能控制股份有限公司 | Pressure transmitter for chemical pipeline |
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