CN211425744U - Dual-purpose pressure differential transmitter - Google Patents
Dual-purpose pressure differential transmitter Download PDFInfo
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- CN211425744U CN211425744U CN202020260514.1U CN202020260514U CN211425744U CN 211425744 U CN211425744 U CN 211425744U CN 202020260514 U CN202020260514 U CN 202020260514U CN 211425744 U CN211425744 U CN 211425744U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000012530 fluid Substances 0.000 abstract description 8
- 238000010276 construction Methods 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000010438 heat treatment Methods 0.000 description 11
- 238000005259 measurement Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000001276 controlling effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model discloses a dual-purpose type pressure differential changer, include: the low-pressure end of the differential pressure transmitter is connected with the shutoff solenoid valve, and the emptying solenoid valve is connected on a drain pipe between the low-pressure end and the shutoff solenoid valve; the high-pressure end and the turn-off solenoid valve of the differential pressure transmitter are respectively and correspondingly connected with a water supply pipeline and a water return pipeline of a heat supply system through pressure guide pipes, and manual ball valves are arranged on the pressure guide pipes. The utility model discloses a control turn-off solenoid valve and evacuation solenoid valve's on off state can survey pipeline fluid pressure and pressure differential simultaneously, and the practicality is strong, has reduced the project investment for two sets of hardware equipment, has reduced the construction degree of difficulty, has reduced the pipeline and has leaked the risk, has alleviateed managers's plant maintenance pressure.
Description
Technical Field
The utility model relates to a heating system thermal technology measures technical field, and more specifically says so and relates to a dual-purpose type changer that can survey pipeline fluid pressure and pressure differential simultaneously.
Background
The main function of the heat supply system is to measure parameters of the pipeline medium such as flow, heat, pressure difference, temperature and liquid level, and to judge the running state and stability of the heat supply network, the running safety of the heat supply network, the rationality of the heat output and the comfort of the indoor temperature of the heat consumer. Meanwhile, the method is also the basis for implementing a series of regulation and control modes such as regulating the heat source output, setting the water pump frequency, controlling the opening of the valve and the like by operation managers, and is the premise that the production of a heat supply system meets the targets of safety, stability, energy conservation, environmental protection and the like. Pressure and pressure difference are the two parameters most common and indispensable in heating systems. With the development of electronic information technology, automation systems (including SCADA systems, DCS systems, PLC and the like) have been popularized in the field of urban central heating, the traditional manual data collection mode has been replaced by the heating automation system, and the operation data of a heat supply network is basically automatically collected, uploaded and stored. In the large background of heating automation systems, the measurement of heat supply network pressure and differential pressure parameters mainly depends on pressure transmitters and differential pressure transmitters.
At present, in order to obtain the pressure and the pressure difference value on the water supply and return pipeline at the same time, a method of installing two sets of pressure transmitters or a method of installing one set of pressure transmitter and one set of pressure transmitter is generally adopted. The two sets of pressure transmitters can directly measure the pressure value on the water supply and return pipeline, and the difference value is calculated to be the pressure difference value; in a similar way, one set of pressure difference transmitter and one set of pressure transmitter can directly measure the pressure difference value and one pressure value, and the other pressure value can be calculated by addition and subtraction. However, the two measurement methods both relate to two sets of hardware equipment, and compared with one set of equipment capable of measuring both pressure and pressure difference, the initial investment of a project is increased, the construction difficulty of the project is increased, meanwhile, the risk of system leakage is increased due to the increase of the number of the openings of the heat supply network pipelines, and the difficulty of equipment maintenance of operation managers is further increased.
Therefore, how to provide a dual-purpose transmitter capable of simultaneously measuring the pressure and the differential pressure of the pipeline fluid is a problem to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a dual-purpose type pressure differential transmitter has reduced the project investment for two sets of hardware equipment, has reduced the construction degree of difficulty, has reduced the pipeline and has leaked the risk, has alleviateed managers's plant maintenance pressure.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a dual-use differential pressure transmitter comprising: the low-pressure end of the differential pressure transmitter is connected with the shutoff solenoid valve, and a drain pipe between the low-pressure end and the shutoff solenoid valve is connected with the drain solenoid valve;
the high-pressure end of the differential pressure transmitter and the turn-off electromagnetic valve are respectively and correspondingly connected with a water supply pipeline and a water return pipeline of a heat supply system through pressure guide pipes, and manual ball valves are arranged on the pressure guide pipes.
Further, the differential pressure transmitter is connected with the data control cabinet through a wire.
Furthermore, the data control cabinet is in wireless connection with the central centralized control center.
Further, the evacuation solenoid valve is connected with a drain pipe or a drain ditch through an evacuation pipe.
According to the technical scheme, compare with prior art, the utility model discloses a dual-purpose type pressure differential transmitter turns off solenoid valve control pressure differential transmitter low pressure end and the intercommunication of survey pipeline, and the evacuation solenoid valve is used for the deposit water between evacuation pressure differential transmitter low pressure end interface and the shutoff solenoid valve, makes pressure differential transmitter low pressure end and atmosphere contact completely, and the on-off state through control shutoff solenoid valve and evacuation solenoid valve can survey pipeline fluid pressure and pressure differential simultaneously.
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 view of an installation method of the dual-purpose pressure differential transmitter provided by the present invention.
Fig. 2 is a schematic diagram of the internal structure of the dual-purpose pressure differential transmitter provided by the present invention.
Wherein each component represents:
1. differential pressure transmitter, 2, shutoff solenoid valve, 3, evacuation solenoid valve, 4, pressure pipe, 5, manual ball valve, 6, evacuation pipe.
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.
The embodiment of the utility model discloses dual-purpose type pressure differential changer, trompil and welding connecting pipe 4 on the confession wet return of the appointed measurement station of heating system, connecting pipe 4 links to each other with dual-purpose type pressure differential changer. The interface of the dual-purpose pressure differential transmitter is divided into a high-pressure end and a low-pressure end, and the high-pressure end and the low-pressure end need to be consistent with the pressure condition of a pipeline when being connected. Manual ball valves 5 are respectively arranged on the pressure guide pipes 4 to play a role of turning off, and when the transmitter works normally for measurement, the manual ball valves 5 on the two sides are opened; and when the transmitter is overhauled or replaced, the manual ball valves 5 on the two sides are closed.
The traditional differential pressure transmitter 1 in the dual-purpose differential pressure transmitter is a main measuring element, and is used for measuring the differential pressure between specified water supply and return pipelines and transmitting the differential pressure to a data control cabinet through a wire.
The shutoff electromagnetic valve 2 is arranged at the interface of the low-pressure end of the traditional differential pressure transmitter 1, is connected with the pressure guide pipe 4 and is used for controlling the communication between the low-pressure end of the traditional differential pressure transmitter 1 and a measured pipeline.
The evacuation solenoid valve 3 is arranged on a drain pipe between the low-pressure end interface of the traditional differential pressure transmitter 1 and the shutoff solenoid valve 2, and is used for evacuating water stored between the low-pressure end interface of the traditional differential pressure transmitter and the shutoff solenoid valve 2 so that the low-pressure end of the traditional differential pressure transmitter is completely contacted with the atmosphere.
The measurement principle of the dual-purpose pressure differential transmitter is as follows: when measuring the pressure difference between the water supply and return pipelines of the heating system, opening and closing the electromagnetic valve 2, and closing the emptying electromagnetic valve 3, so that the high-low pressure port of the traditional pressure difference transmitter is normally connected with the pipelines, and the data detected by the equipment is the pressure difference between the pipelines; when measuring the fluid pressure in the pipeline, closing and shutting the electromagnetic valve 2, and opening the evacuation electromagnetic valve 3, so that the high-pressure end of the traditional differential pressure transmitter is normally connected with the pipeline, the low-pressure end is connected with the atmosphere, the pressure of the low-pressure end is 0, and the data detected by the equipment is the fluid pressure in the high-pressure pipeline; and subtracting the pressure difference value from the pressure value measured by the dual-purpose pressure differential pressure transmitter to obtain the fluid pressure in the low-pressure pipeline. At this moment, 3 data of the pressure of the fluid in the water supply and return pipeline and the pressure difference between pipelines are obtained by measuring a set of dual-purpose pressure difference transmitter. The detection data (pressure or pressure difference) is wirelessly transmitted to a central centralized control center through a data control cabinet, so that the transmission and storage of the data are realized.
Further, the respective measurement of the pressure and the differential pressure by the dual-purpose type transmitter is realized by switching the switches of the shutoff solenoid valve 2 and the evacuation solenoid valve 3. The on-off states of the shutoff solenoid valve 2 and the evacuation solenoid valve 3 can be implemented by directly setting a strategy by a data control cabinet or receiving a remote strategy of a central centralized control center, and are controlled by using the existing program.
Aiming at an inlet and an outlet of each device in a heating system, a water supply and return pipe of each small chamber, an inlet and outlet main pipeline of each heating power station and a heating power inlet of each building unit of a secondary network, a dual-purpose pressure difference transmitter is installed nearby by utilizing a pressure guide pipe and is connected to a data control cabinet in a wired mode, pressure difference data collected by the transmitter is obtained through the data control cabinet, and the pressure difference data are sent to a central centralized control center in a wireless mode.
The utility model has the advantages that: the utility model discloses a thermotechnical measurement to heating system pipeline pressure differential provides, and the practicality is strong, and maneuverability is high, can effectively simplify the installation of measuring hardware equipment, reduces the construction degree of difficulty, reduces the pipeline and leaks the risk, lightens managers' operation maintenance pressure.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (4)
1. A dual-purpose differential pressure transmitter, comprising: the device comprises a differential pressure transmitter (1), a turn-off solenoid valve (2) and an emptying solenoid valve (3), wherein the low-pressure end of the differential pressure transmitter (1) is connected with the turn-off solenoid valve (2), and a drain pipe between the low-pressure end and the turn-off solenoid valve (2) is connected with the emptying solenoid valve (3);
the high-pressure end of the differential pressure transmitter (1) and the turn-off solenoid valve (2) are respectively and correspondingly connected with a water supply pipeline and a water return pipeline of a heat supply system through a pressure guide pipe (4), and the pressure guide pipe (4) is provided with a manual ball valve (5).
2. The dual-purpose differential pressure transmitter of claim 1, wherein the differential pressure transmitter (1) is wired to a data control cabinet.
3. The dual-purpose differential pressure transmitter of claim 2, wherein the data control cabinet is wirelessly connected to a central centralized control center.
4. The dual-purpose pressure differential transmitter according to any one of claims 1 to 3, wherein the evacuation solenoid valve (3) is connected to a drain pipe or a drain ditch through an evacuation pipe (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020260514.1U CN211425744U (en) | 2020-03-05 | 2020-03-05 | Dual-purpose pressure differential transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020260514.1U CN211425744U (en) | 2020-03-05 | 2020-03-05 | Dual-purpose pressure differential transmitter |
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| Publication Number | Publication Date |
|---|---|
| CN211425744U true CN211425744U (en) | 2020-09-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020260514.1U Active CN211425744U (en) | 2020-03-05 | 2020-03-05 | Dual-purpose pressure differential transmitter |
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| Country | Link |
|---|---|
| CN (1) | CN211425744U (en) |
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2020
- 2020-03-05 CN CN202020260514.1U patent/CN211425744U/en active Active
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