CN209841266U - Differential pressure transmitting device - Google Patents
Differential pressure transmitting device Download PDFInfo
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- CN209841266U CN209841266U CN201920910842.9U CN201920910842U CN209841266U CN 209841266 U CN209841266 U CN 209841266U CN 201920910842 U CN201920910842 U CN 201920910842U CN 209841266 U CN209841266 U CN 209841266U
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- differential pressure
- pressure transmitter
- pipe
- heat
- insulating sleeve
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Abstract
The utility model discloses a differential pressure transmitting device, including differential pressure transmitter and comdenstion water fluid-discharge tube, the comdenstion water fluid-discharge tube links to each other with differential pressure transmitter for the comdenstion water among the discharge differential pressure transmitter, comdenstion water fluid-discharge tube periphery are equipped with insulation support. When the differential pressure transmitter is operating normally, the temperature of the gas entering the differential pressure transmitter is typically above the dew point of water vapor. Because the ambient temperature is low, the gas dissipates heat during the flowing process, and finally liquefies and condenses in the differential pressure transmitter. The differential pressure transmitting device is provided with the heat-insulating sleeve at the periphery of the condensate water drain pipe, the heat-insulating sleeve can reduce heat dissipation, condensate water condensation is avoided, and the differential pressure transmitting device can normally operate at a low temperature.
Description
Technical Field
The utility model relates to a check out test set technical field, in particular to differential pressure becomes send device.
Background
In the exhaust system, in order to make the system operate more stably and reliably, the fan needs to adjust the frequency according to the pressure change of the system, so as to ensure that the machine has stable and proper negative pressure in the production process. The accurate measurement of the pressure value of the system pipeline is extremely important for the stability of negative pressure regulation, so that a differential pressure transmitter with high measurement precision and good stability is generally adopted in a control system to measure the pressure.
However, if the temperature of the operating environment of the differential pressure transmitter is less than the dew point temperature of the air in the pressure sensing tube, condensation water may be generated in the pressure sensing tube. Once the condensed water is frozen, the pressure measuring pipe can be blocked, so that the pressure sensor can feed back wrong pressure parameters, and the normal operation of the fan is seriously influenced.
Therefore, how to avoid freezing of condensed water in the differential pressure transmitter is a technical problem that needs to be solved urgently by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a differential pressure is changed and is sent device, it has set up the insulation support in the periphery of comdenstion water fluid-discharge tube, prevents that the comdenstion water temperature from crossing excessively.
In order to achieve the above object, the utility model provides a differential pressure transmitter, including differential pressure transmitter and with differential pressure transmitter links to each other, with the comdenstion water fluid-discharge tube of discharge comdenstion water, comdenstion water fluid-discharge tube periphery is equipped with insulation support.
Preferably, a heat tracing pipe connected with a heat tracing system is further arranged in the heat insulation sleeve.
Preferably, the heat insulation pipe also comprises a high-pressure leading pipe connected with the high-pressure measuring point and a low-pressure leading pipe connected with the low-pressure measuring point, and the heat insulation sleeve and the heat tracing pipe are arranged on the peripheries of the high-pressure leading pipe and the low-pressure leading pipe.
Preferably, two ball valves are connected to the condensed water drain pipe.
Preferably, the heat tracing pipe is provided with an electromagnetic valve for controlling the flow of the heat tracing medium, and the differential pressure transmitter is also connected with a temperature sensor, and the temperature sensor is connected with the electromagnetic valve to adjust the temperature of the differential pressure transmitter.
Preferably, a heating device is further arranged in the heat-insulating sleeve.
Preferably, the heating device is connected with the temperature sensor, and the power of the heating device is adjusted according to the current temperature measured by the temperature sensor.
Preferably, the periphery of the heat-insulating sleeve is also provided with a protective shell.
The utility model provides a differential pressure transmitting device, including differential pressure transmitter and comdenstion water fluid-discharge tube, the comdenstion water fluid-discharge tube links to each other with differential pressure transmitter for the comdenstion water among the discharge differential pressure transmitter, comdenstion water fluid-discharge tube periphery are equipped with insulation support.
When the differential pressure transmitter is operating normally, the temperature of the gas entering the differential pressure transmitter is typically above the dew point of water vapor. Because the ambient temperature is low, the gas dissipates heat during the flowing process, and finally liquefies and condenses in the differential pressure transmitter. The differential pressure transmitting device is provided with the heat-insulating sleeve at the periphery of the condensate water drain pipe, the heat-insulating sleeve can reduce heat dissipation, condensate water condensation is avoided, and the differential pressure transmitting device can normally operate at a low temperature.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of the differential pressure transmitter provided by the present invention.
Wherein the reference numerals in fig. 1 are:
the device comprises a differential pressure transmitter 1, a fixed support 2, a high-pressure leading pipe 3, a low-pressure leading pipe 4, a condensed water drain pipe 5, a ball valve 6, a heat-insulating sleeve 7 and a heat tracing pipe 8.
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 order to make the technical field of the present invention better understand, the present invention will be described in detail with reference to the accompanying drawings and the detailed description.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a differential pressure transmitter according to the present invention.
The utility model provides a differential pressure transmitter, the structure is as shown in figure 1. The differential pressure transmitting device comprises a differential pressure transmitter 1 and a condensate water drain pipe 5, and the differential pressure transmitting device is connected with the differential pressure transmitter 1 and used for draining condensate water generated in the differential pressure transmitter 1.
The periphery of the condensed water drain pipe 5 is provided with a heat insulation sleeve 7, heat dissipation of the condensed water is reduced through the heat insulation sleeve 7, and condensation of the condensed water due to too low temperature is avoided. The heat-insulating sleeve 7 can be a polyethylene sleeve, a rubber sleeve or a polystyrene sleeve. The heat-insulating sleeve 7 is generally of a porous structure, and the gap in the heat-insulating sleeve 7 is filled with air, so that the heat-insulating effect can be achieved, and the heat loss is reduced.
Optionally, the heat-insulating sleeve 7 and the condensed water drain pipe 5 can be connected in an interference fit manner, a viscous material can be arranged on the condensed water drain pipe 5 for bonding, and the heat-insulating sleeve 7 can be fixed on the periphery of the condensed water drain pipe 5 by adopting structures such as a hoop.
Differential pressure transmitter still includes and draws pressure pipe 3 and low pressure to draw and press pipe 4 still high pressure, and the two all links to each other with differential pressure transmitter 1, and high pressure draws pressure pipe 3 still links to each other with high pressure measurement point simultaneously, and low pressure draws pressure pipe 4 and links to each other with low pressure measurement point, and differential pressure transmitter 1 can measure the pressure differential between high pressure measurement point and the low pressure measurement point. When the gauge pressure of the medium is to be measured, the low-pressure guiding pipe 4 is usually communicated with the atmosphere, and the pressure value displayed by the differential pressure transmitter 1 is the gauge pressure of the medium at the moment. The condensed water in the differential pressure transmitter 1 is usually generated by the medium in the pressure guiding pipe under low temperature condition, and the pressure guiding pipe can be frozen if the environmental temperature is too low. Therefore, the present application has set up insulation support 7 in the periphery of high pressure pipe 3 and low pressure pipe 4.
Optionally, the periphery that differential pressure becomes to send still is equipped with fixed bolster 2, and fixed bolster 2 can be fixed differential pressure becomes the device and fix on mechanisms such as wall, pipeline, avoids differential pressure transmitter 1 to take place the vibration in the course of the work, influences differential pressure transmitter 1's normal work.
In this embodiment, the peripheries of the high-pressure guiding pipe 3, the low-pressure guiding pipe 4 and the condensate water drain pipe 5 of the differential pressure transmitting device are all provided with the heat insulating sleeve 7, and the heat insulating sleeve 7 can reduce the heat loss of the medium measured by the differential pressure transmitting device, so as to avoid the water vapor in the medium from being condensed and frozen. The normal operation of the differential pressure transmitting device under the environment with lower temperature is ensured.
In the northern part of China, the environmental temperature is very low in winter, and even if the heat-insulating sleeve 7 is arranged in the differential pressure transmitting device, the freezing of the condensed water cannot be avoided. Thus, the differential pressure transmitter is also provided with a heat tracing pipe 8. As shown in fig. 1, the heat trace pipe 8 is located in the insulating sleeve 7. Specifically, heat tracing pipes 8 are arranged between the heat-insulating sleeve 7 and the high-pressure leading pipe 3, between the heat-insulating sleeve 7 and the low-pressure leading pipe 4, and between the heat-insulating sleeve 7 and the condensed water discharge pipe 5. The heat tracing pipe 8 can be connected with a steam heat tracing system on a working site, and the ambient temperature around the differential pressure transmitting device is improved through steam heat tracing, so that the cooling water is prevented from freezing.
Optionally, the heat trace pipe 8 may be provided with a quick-connect joint, so that the heat trace pipe 8 and the heat trace system can be quickly connected. Of course, the heat tracing pipe 8 can also be connected with the heat tracing system by adopting a threaded connection and the like. The heat tracing pipes 8 of the high-pressure leading pipe 3, the low-pressure leading pipe 4 and the condensed water discharge pipe 5 can be connected through a three-way joint, and heat tracing steam flows in from the heat tracing pipes 8 of the condensed water discharge pipe 5 and flows out from the other two heat tracing pipes 8.
Further, if the ambient temperature is too high, the accuracy of differential pressure transmitter 1 can also be affected. In order to control the ambient temperature, the differential pressure transmitter 1 is also connected with a temperature sensor for measuring the ambient temperature around the differential pressure transmitter 1, and an electromagnetic valve is arranged in the heat tracing pipe 8. Specifically, the electromagnetic valve is arranged on the heat tracing pipe 8 of the condensed water discharge pipe 5 and used for controlling the heat tracing steam flow. The temperature sensor is connected with the electromagnetic valve, and when the ambient temperature is higher than a preset temperature value, the opening degree of the electromagnetic valve is reduced.
In addition, condensate water drain pipe 5 even has two ball valves 6, can discharge the condensate water through ball valve 6, avoids the condensate water to gather in differential pressure transmitting device, influences differential pressure transmitter 1's normal work.
In this embodiment, the differential pressure transmitter is further provided with a heat tracing pipe 8, the heat tracing pipe 8 can be connected with a heat tracing system, and the ambient temperature around the differential pressure transmitter is increased through the heat tracing system, so that the differential pressure transmitter can work in an extremely cold environment.
A heat tracing system is not arranged in part of working scenes of the differential pressure transmitting device, and the differential pressure transmitting device is also provided with a heating device for improving the environmental temperature. The heating device is positioned in the heat-insulating sleeve 7 and is arranged along the high-pressure-leading pipe 3, the low-pressure-leading pipe 4 and the condensed water drain pipe 5. The heating device may be embodied as an electric heating wire or an electric heating rod, etc., and may be arranged in parallel on the circuit with the differential pressure transmitter 1.
Optionally, the heating device further comprises a power adjusting mechanism, the power adjusting mechanism is connected with the temperature sensor, and when the ambient temperature is greater than the preset temperature value, the power adjusting mechanism reduces the power of the electric heating wire or the electric heating rod.
Further, in order to facilitate transportation and management of the differential pressure transmitting device, a protective shell is further arranged on the periphery of the heat-insulating sleeve 7. The protective shell can be made of materials such as aluminum plates or galvanized steel plates, and is in interference fit with the heat-insulating sleeve 7, so that the parts such as the heat-insulating sleeve 7, the heat tracing pipe 8 and the heating device are fixed and protected.
In this embodiment, the differential pressure transmitting device is further provided with a heating device, and when no heat tracing system exists in the working scene of the differential pressure transmitting device, the heating device is connected with the circuit and can electrically heat the surrounding environment of the differential pressure transmitting device, so that the differential pressure transmitting device can operate at a low temperature, and the application range of the differential pressure transmitting device is widened.
It is noted that, in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.
It is right above that the utility model provides a differential pressure transducer introduces in detail. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (8)
1. The differential pressure transmitting device is characterized by comprising a differential pressure transmitter (1) and a condensed water drain pipe (5) connected with the differential pressure transmitter (1) and used for draining condensed water, wherein a heat-insulating sleeve (7) is arranged on the periphery of the condensed water drain pipe (5).
2. The differential pressure transmitter according to claim 1, characterized in that a heat tracing pipe (8) for connecting with a heat tracing system is further provided in the heat insulating sleeve (7).
3. The differential pressure transmitter according to claim 2, further comprising a high pressure pipe (3) for connecting to a high pressure measuring point and a low pressure pipe (4) for connecting to a low pressure measuring point, wherein the heat insulating sleeve (7) and the heat tracing pipe (8) are provided on the outer peripheries of the high pressure pipe (3) and the low pressure pipe (4).
4. The differential pressure transmitter according to claim 1, characterized in that two ball valves (6) are connected to the condensate drain (5).
5. The differential pressure transmitter according to claim 3, wherein the heat tracing pipe (8) is provided with an electromagnetic valve for controlling the flow of the heat tracing medium, and the differential pressure transmitter (1) is further connected with a temperature sensor connected with the electromagnetic valve to adjust the temperature of the differential pressure transmitter (1).
6. The differential pressure transmitter according to claim 5, characterized in that a heating device is further provided in the insulating sleeve (7).
7. The differential pressure transducer according to claim 6, wherein the heating device is coupled to the temperature sensor and adjusts the power of the heating device based on the current temperature measured by the temperature sensor.
8. The differential pressure transmitter according to any one of claims 1 to 7, characterized in that the outer circumference of the insulating sleeve (7) is further provided with a protective casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920910842.9U CN209841266U (en) | 2019-06-17 | 2019-06-17 | Differential pressure transmitting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920910842.9U CN209841266U (en) | 2019-06-17 | 2019-06-17 | Differential pressure transmitting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209841266U true CN209841266U (en) | 2019-12-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920910842.9U Active CN209841266U (en) | 2019-06-17 | 2019-06-17 | Differential pressure transmitting device |
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| CN (1) | CN209841266U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114235271A (en) * | 2021-11-12 | 2022-03-25 | 潍柴动力股份有限公司 | Method and device for detecting dew point of differential pressure sensor, storage medium and equipment |
| CN114992921A (en) * | 2021-07-09 | 2022-09-02 | 苏州市悦泰制冷设备有限公司 | Refrigeration equipment with condensate water recovery structure |
-
2019
- 2019-06-17 CN CN201920910842.9U patent/CN209841266U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114992921A (en) * | 2021-07-09 | 2022-09-02 | 苏州市悦泰制冷设备有限公司 | Refrigeration equipment with condensate water recovery structure |
| CN114992921B (en) * | 2021-07-09 | 2024-04-16 | 苏州市悦泰制冷设备有限公司 | Refrigeration equipment with condensate water recovery structure |
| CN114235271A (en) * | 2021-11-12 | 2022-03-25 | 潍柴动力股份有限公司 | Method and device for detecting dew point of differential pressure sensor, storage medium and equipment |
| CN114235271B (en) * | 2021-11-12 | 2024-01-12 | 潍柴动力股份有限公司 | Dew point detection method and device for differential pressure sensor, storage medium and equipment |
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