Exhaust device and system

Abstract

The utility model discloses an exhaust device and system. The exhaust device comprises a positive pressure side connector, a first isolating valve, a filtering monitor, a second isolating valve and a negative pressure side connector. The filtering monitor is used for filtering and monitoring air. Wherein the first end of the positive pressure side interface can be used for being connected with a positive pressure side pipeline of an external double-pipe differential pressure transmitter system, the second end of the positive pressure side interface is connected with the first end of the first isolating valve, and the second end of the first isolating valve is connected with the first end of the filtering monitor; the second end of the filtering monitor is connected with the first end of the second isolating valve, the second end of the second isolating valve is connected with the first end of the negative pressure side connector, and the second end of the negative pressure side connector can be used for being connected with a negative pressure side pipeline of an external double-pipe differential pressure transmitter system. The exhaust device is used for solving the exhaust problem of positive and negative pressure side pipelines in the operation state of a double-pipe differential pressure transmitter system, and the filter monitor can filter and monitor air to determine the bubble condition in the exhaust process.

Description

TECHNICAL FIELD

[0001] The utility model relates to instrument maintenance technical field especially, relate to a exhaust device and system. BACKGROUND

[0002] The measurement of flow, liquid level and other parameters is converted into pressure measurement many times, so in industrial systems, differential pressure transmitter is used to measure flow, liquid level and other parameters in many scenes. In the application process of differential pressure transmitter, some fluctuation problems are prone to occur, and the fluctuation of instrument parameters can easily lead to abnormal industrial system control, resulting in unstable system control, so the stability of instrument parameters is very important for industrial systems.

[0003] When there is air in the pipeline or instrument inside the pressure taking side, due to the greater compressibility of gas relative to water, under the condition of pressure fluctuation of industrial systems, the volume of gas will produce elastic fluctuation like spring effect, resulting in frequent fluctuation of instrument pressure measurement, affecting the reliability, accuracy and service life of the instrument measurement system. Therefore, in order to ensure the reliability of the instrument measurement system, the instrument measurement system needs to be exhausted.

[0004] The main operation method of the exhaust work of the instrument system is to discharge the system medium from the industrial system after the completion of the instrument maintenance work, so that the medium fills the pipeline, and the air in the pipeline is discharged to perform the exhaust work of the instrument.

[0005] However, the above exhaust method has the following problems:

[0006] 1. It needs to be executed at a lower pressure temperature parameter of the industrial system, otherwise it will face the risk of personal injury;

[0007] 2. There is a large amount of medium leakage in the exhaust process, which has an impact on the environment, personnel and equipment for toxic or radioactive medium;

[0008] The cause of instrument failure during the exhaust process cannot be determined, and the condition of the pipeline bubbles or impurities in the system cannot be quantitatively determined. INVENTION CONTENT

[0009] The technical problem to be solved by the utility model is that, in view of at least one defect of the related technology mentioned in the above background technology, the existing exhaust method needs to be executed at a lower pressure temperature parameter of the industrial system, and a large amount of medium leakage occurs, an exhaust device and system are provided.

[0010] The technical scheme adopted by the utility model to solve its technical problem is: a kind of exhaust device is structured, comprising: positive pressure side interface, first isolation valve, filter monitor, second isolation valve and negative pressure side interface;The filter monitor is used to filter and monitor air;

[0011] wherein the first end of the positive pressure side interface is configured to be connected to a positive pressure side line of an external two-tube differential pressure transmitter system, the second end of the positive pressure side interface is connected to the first end of the first isolation valve, the second end of the first isolation valve is connected to the first end of the filter monitor;

[0012] the second end of the filter monitor is connected to the first end of the second isolation valve, the second end of the second isolation valve is connected to the first end of the negative pressure side interface, the second end of the negative pressure side interface is configured to be connected to a negative pressure side line of the external two-tube differential pressure transmitter system.

[0013] In some embodiments, the venting device further comprises a third isolation valve and a driver;

[0014] wherein the second end of the filter monitor is connected to the first end of the second isolation valve and the first end of the third isolation valve, respectively;

[0015] the second end of the third isolation valve is connected to the first end of the driver, the second end of the driver is connected to the first end of the negative pressure side interface.

[0016] In some embodiments, the venting device further comprises a fourth isolation valve, a fifth isolation valve, a sixth isolation valve, a seventh isolation valve and a first external interface;

[0017] wherein the first end of the first external interface is configured to be connected to an external water source, the second end of the first external interface is connected to the first end of the seventh isolation valve, the second end of the seventh isolation valve is connected to the second end of the first isolation valve and the first end of the filter monitor, respectively;

[0018] the first end of the fourth isolation valve is connected to the second end of the driver, the second end of the fourth isolation valve is connected to the first end of the fifth isolation valve, the second end of the fifth isolation valve is connected to the first end of the negative pressure side interface;

[0019] the first end of the sixth isolation valve is connected to the second end of the second isolation valve in one way and connected to the second end of the fourth isolation valve and the first end of the fifth isolation valve in another way, respectively;

[0020] the second end of the sixth isolation valve is connected to the second end of the positive pressure side interface and the first end of the first isolation valve, respectively;

[0021] the second end of the negative pressure side interface is further configured to be connected to a pressure taking side line of an external single-tube differential pressure transmitter system.

[0022] In some embodiments, the exhaust device further comprises a third isolation valve, a second external interface and an eighth isolation valve.

[0023] The first end of the positive pressure side interface is further connectable to a pressure taking side pipeline of an external single-pipe differential pressure transmitter system.

[0024] The second end of the filter monitor is connected to the first end of the second isolation valve and the first end of the third isolation valve respectively.

[0025] The second end of the third isolation valve is connected to the second external interface through the eighth isolation valve.

[0026] In some embodiments, the exhaust device further comprises a second external interface and an eighth isolation valve.

[0027] The first end of the driver is connected to the second end of the third isolation valve and the first end of the eighth isolation valve respectively.

[0028] The second end of the eighth isolation valve is connected to the first end of the second external interface, and the second end of the second external interface is further connectable to an external water source.

[0029] In some embodiments, the exhaust device further comprises an adjusting valve for adjusting flow.

[0030] The second end of the eighth isolation valve is connected to the first end of the second external interface through the adjusting valve.

[0031] In some embodiments, the filter monitor comprises an observation window for observing the air condition inside the filter monitor in real time.

[0032] In some embodiments, the filter monitor comprises an inlet, an outlet, an air filtering unit arranged between the inlet and the outlet, and a foreign matter filtering unit arranged at the outlet.

[0033] In some embodiments, the exhaust device further comprises a foreign matter filter.

[0034] The second end of the positive pressure side interface is connected to the first end of the first isolation valve through the foreign matter filter.

[0035] The utility model further constructs an exhaust system, including double-pipe differential pressure transmitter system or single-pipe differential pressure transmitter system, further including the exhaust device of any one of the above.

[0036] By implementing the utility model, the following beneficial effects are achieved:

[0037] The exhaust device of the utility model is used for solving the exhaust problem of the positive pressure side pipeline and the negative pressure side pipeline under the running state of the double-tube differential pressure transmitter system (namely under the high temperature and high pressure medium state), can utilize the differential pressure of the positive pressure side pipeline and the negative pressure side pipeline, fill the internal medium of the double-tube differential pressure transmitter system with the positive pressure side pipeline and the negative pressure side pipeline, drive away the air of the positive pressure side pipeline and the negative pressure side pipeline, complete the exhaust work, and during the whole exhaust process, the staff only needs to operate the exhaust device, does not need to operate the double-tube differential pressure transmitter system, the device plays the role of isolation protection during the whole process, can effectively avoid the medium leakage, and prevent the staff from being injured and radiated.

[0038] In addition, the filter monitor can filter and monitor the air online, determine the bubble condition in the exhaust process, and provide a strong reference for auxiliary analysis of instrument fluctuation. BRIEF DESCRIPTION OF DRAWINGS

[0039] The utility model will be further described below in combination with the drawings and examples, and the drawings show:

[0040] Figure 1 The logical structure schematic diagram of an embodiment in the double-tube differential pressure transmitter system is shown;

[0041] Figure 2 The logical structure schematic diagram of an embodiment in the single-tube differential pressure transmitter system is shown;

[0042] Figure 3 The logical structure schematic diagram of an embodiment in the exhaust device of the utility model is shown;

[0043] Figure 4 The medium flow direction schematic diagram of the exhaust device of the utility model under the positive and negative differential pressure exhaust mode is shown;

[0044] Figure 5 The medium flow direction schematic diagram of the exhaust device of the utility model under the driving exhaust mode is shown;

[0045] Figure 6 The medium flow direction schematic diagram of the exhaust device of the utility model under the positive pressure side water filling exhaust mode is shown;

[0046] Figure 7 The medium flow direction schematic diagram of the exhaust device of the utility model under the negative pressure side water filling exhaust mode is shown;

[0047] Figure 8 The medium flow direction schematic diagram of the exhaust device of the utility model under the single-tube water drainage exhaust mode is shown;

[0048] Figure 9 The medium flow direction schematic diagram of the exhaust device of the utility model under the single-tube water filling exhaust mode is shown;

[0049] Figure 10 The utility model exhaust device shows in the first pipeline water filling exhaust mode under the medium flow direction schematic drawing of exhaust device;

[0050] Figure 11 The utility model exhaust device shows in the second pipeline water filling exhaust mode under the medium flow direction schematic drawing of exhaust device;

[0051] Figure 12 The utility model exhaust device shows in the backwashing mode under the medium flow direction schematic drawing of exhaust device. DETAILED DESCRIPTION

[0052] In order to have more clear understanding of the technical features, objects and effects of the utility model, the specific embodiment of the utility model will be explained in detail by referring to the drawings.

[0053] It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.

[0054] In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more features. In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0055] In the description of the utility model, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection", "connection", "set in", "located" should be understood broadly, for example, it can be fixed connection, can also be detachable connection, can be mechanical connection, can also be chemical connection, can be directly connected, can also be indirectly connected through intermediate medium. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood through specific circumstances.

[0056] It should be noted here that the connection between the following components refers to the connection of physical structure, and is not limited to the communication relationship.

[0057] Nuclear power plant has many systems running, in many systems have application to differential pressure transmitter, differential pressure transmitter can be used for high temperature and high pressure medium pressure measurement, can reach stable performance in 191 ℃ ambient temperature, the temperature and pressure parameters of the measuring medium of the primary circuit related instrument can reach 15.5 Mpa, 350 ℃, differential pressure transmitter through the pipeline to obtain the primary element or system pressure, and then the sensor senses the pressure and converts it into a standard electrical signal for output.

[0058] The differential pressure transmitter system is a double pipe differential pressure transmitter system 2 or a single pipe differential pressure transmitter system 3. As shown in Figure 1 The double pipe differential pressure transmitter system 2 comprises a first main pipeline 21, a positive pressure side pipeline 22, a negative pressure side pipeline 23 and a double pipe differential pressure transmitter 24. The first pipeline 241 of the double pipe differential pressure transmitter 24 is connected with the first main pipeline 21 through the positive pressure side pipeline 22, the second pipeline 242 of the double pipe differential pressure transmitter 24 is connected with the first main pipeline 21 through the negative pressure side pipeline 23, and the double pipe differential pressure transmitter 24 can obtain accurate measurement value of the medium pressure in the first main pipeline 21.

[0059] The double pipe differential pressure transmitter system 2 further comprises a positive pressure side isolation valve 25 and a negative pressure side isolation valve 26. The positive pressure side isolation valve 25 is arranged on the positive pressure side pipeline 22, and the negative pressure side isolation valve 26 is arranged on the negative pressure side pipeline 23. The positive pressure side pipeline 22 and the negative pressure side pipeline 23 are connected or disconnected with the first main pipeline 21 through the switch isolation valve. In addition, the double pipe differential pressure transmitter system 2 further comprises a balance valve 29 arranged between the positive pressure side pipeline 22 and the negative pressure side pipeline 23. The positive pressure side pipeline 22 and the negative pressure side pipeline 23 are connected or disconnected through the switch balance valve 29.

[0060] The double pipe differential pressure transmitter system 2 further comprises a positive pressure side three-way valve 27 and a negative pressure side three-way valve 28. The first pipeline 241 is connected with the positive pressure side pipeline 22 through the positive pressure side three-way valve 27. Specifically, the positive pressure side three-way valve 27 comprises a first interface, a second interface and a third interface. The first interface is connected with the first pipeline 241, the second interface is connected with the positive pressure side pipeline 22, and the third interface is used for external connection. The second pipeline 242 is connected with the negative pressure side pipeline 23 through the negative pressure side three-way valve 28. Specifically, the negative pressure side three-way valve 28 comprises a fourth interface, a fifth interface and a sixth interface. The fourth interface is connected with the second pipeline 242, the fifth interface is connected with the negative pressure side pipeline 23, and the sixth interface is used for external connection. In addition, the double pipe differential pressure transmitter 24 is provided with a first exhaust valve 243 connected with the first pipeline 241 and a second exhaust valve 244 connected with the second pipeline 242.

[0061] As shown in Figure 2As shown, the single-tube differential pressure transmitter system 3 comprises a second main pipeline 31, a pressure-taking side pipeline 32, a single-tube differential pressure transmitter 33, and a pressure-taking side isolation valve 34, the third pipeline 331 of the single-tube differential pressure transmitter 33 is connected with the second main pipeline 31 through the pressure-taking side pipeline 32, and the pressure-taking side isolation valve 34 is arranged on the pressure-taking side pipeline 32 to realize the communication or disconnection with the second main pipeline 31 by opening and closing the isolation valve.

[0062] The single-tube differential pressure transmitter system 3 further comprises a pressure-taking side three-way valve 35, the third pipeline 331 is connected with the pressure-taking side pipeline 32 through the pressure-taking side three-way valve 35, and specifically, the pressure-taking side three-way valve 35 comprises a seventh interface, an eighth interface and a ninth interface, the seventh interface is connected with the third pipeline 331, the eighth interface is connected with the pressure-taking side pipeline 32, and the ninth interface is used for external connection. In addition, the single-tube differential pressure transmitter 33 is provided with a third exhaust valve 332 in communication with the third pipeline 331.

[0063] When there is air in the instrument pipeline, it will affect the instrument measurement, on the one hand, it will lead to instrument measurement distortion, the main reason is that when the liquid in the pipeline is replaced by air, due to the difference in density, it will affect the pressure measurement of the instrument, leading to abnormal instrument display, on the other hand, due to the disturbance and compressibility of the gas, it is easy to cause the instrument to fluctuate.

[0064] In some conventional use scenarios, the differential pressure transmitter can discharge medium or gas through the exhaust valve by opening the exhaust valve. However, when the internal pressure of the system is high and the temperature is high, if the exhaust valve is directly used for exhaust, the internal medium of the system will be ejected to the outside, which is easy to cause personnel injury and equipment damage. However, if there is air in the instrument pipeline, it will affect the stable operation of the differential pressure transmitter, so the exhaust work needs to be performed. For example, the internal medium of the system is water, which is only an example and does not limit the application, and other media can also be used.

[0065] Therefore, as shown, Figure 3 Some embodiments of the utility model disclose an exhaust device 1, which comprises a positive pressure side interface 101, a first isolation valve 102, a filter monitor 103, a second isolation valve 104 and a negative pressure side interface 105 which are connected in sequence, wherein the filter monitor 103 is used for filtering and monitoring air, and specifically as follows:

[0066] The first end of the positive pressure side interface 101 can be used for connecting with the positive pressure side pipeline 22 of the external double-tube differential pressure transmitter system 2, the second end of the positive pressure side interface 101 is connected with the first end of the first isolation valve 102, and the second end of the first isolation valve 102 is connected with the first end of the filter monitor 103.

[0067] The second end of the filter monitor 103 is connected to the first end of the second isolation valve 104. The second end of the second isolation valve 104 is connected to the first end of the negative pressure side interface 105. The second end of the negative pressure side interface 105 can be used to connect to the negative pressure side pipeline 23 of the external dual-tube differential pressure transmitter system 2.

[0068] like Figure 4 As shown, in the positive and negative differential pressure exhaust mode, the first main pipeline 21 of the dual-pipe differential pressure transmitter system 2 is connected to the positive pressure side pipeline 22, the first end of the positive pressure side interface 101 is connected to the positive pressure side pipeline 22, the second end of the positive pressure side interface 101 is connected to the first end of the filter monitor 103 via the first isolation valve 102, the second end of the filter monitor 103 is connected to the first end of the negative pressure side interface 105 via the second isolation valve 104, the second end of the negative pressure side interface 105 is connected to the negative pressure side pipeline 23 of the dual-pipe differential pressure transmitter system 2, and the negative pressure side pipeline 23 is connected to the first main pipeline 21.

[0069] Using the differential pressure between the positive pressure side pipeline 22 and the negative pressure side pipeline 23, the medium in the first main pipeline 21 of the dual-pipe differential pressure transmitter system 2 flows back to the first main pipeline 21 after passing through the positive pressure side pipeline 22, the positive pressure side interface 101, the first isolation valve 102, the filter monitor 103, the second isolation valve 104, the negative pressure side interface 105, and the negative pressure side pipeline 23. At the same time, the air is filtered and monitored by the filter monitor 103, thus completing the exhaust of the positive pressure side pipeline 22 and the negative pressure side pipeline 23.

[0070] The exhaust device 1 in this embodiment is used to solve the exhaust problem of the positive pressure side pipeline 22 and the negative pressure side pipeline 23 under the operating state of the dual-tube differential pressure transmitter system 2 (i.e., under high temperature and high pressure medium state). It can use the differential pressure between the positive pressure side pipeline 22 and the negative pressure side pipeline 23 to fill the positive pressure side pipeline 22 and the negative pressure side pipeline 23 with the internal medium of the dual-tube differential pressure transmitter system 2, thereby driving out the air in the positive pressure side pipeline 22 and the negative pressure side pipeline 23 and completing the exhaust work. During the entire exhaust process, the operator only needs to operate the exhaust device 1 and does not need to operate the dual-tube differential pressure transmitter system 2. The device plays an isolation and protection role throughout the process, which can effectively prevent the medium from leaking out and prevent personnel from being injured or exposed to radiation.

[0071] In addition, the filter monitor 103 can filter and monitor the air online, determine the bubble situation during the exhaust process, and provide a strong reference for assisting in the analysis of instrument fluctuation problems.

[0072] In some embodiments, the third port of the positive pressure side three-way valve 27 of the dual-tube differential pressure transmitter system 2 can be connected to the positive pressure side port 101 of the exhaust device 1, and the sixth port of the negative pressure side three-way valve 28 of the dual-tube differential pressure transmitter system 2 can be connected to the negative pressure side port 105 of the exhaust device 1, thereby connecting the exhaust device 1 to the dual-tube differential pressure transmitter system 2 for exhausting the positive pressure side pipeline 22, the negative pressure side pipeline 23, the first pipeline 241, and the second pipeline 242.

[0073] In some embodiments, the ninth port of the pressure tapping side three-way valve 35 of the single-tube differential pressure transmitter system 3 can be connected to the positive pressure side port 101 or the negative pressure side port 105 of the exhaust device 1, thereby connecting the exhaust device 1 to the single-tube differential pressure transmitter system 3 for exhausting the pressure tapping side line 32 and the third line 331.

[0074] In some embodiments, such as Figure 3 As shown, the exhaust device also includes a third isolation valve 106 and an actuator 107. The second end of the filter monitor 103 is connected to the first end of the second isolation valve 104 and the first end of the third isolation valve 106, respectively. The second end of the third isolation valve 106 is connected to the first end of the actuator 107, and the second end of the actuator 107 is connected to the first end of the negative pressure side interface 105.

[0075] When there is no differential pressure between the positive pressure side pipeline 22 and the negative pressure side pipeline 23, the actuator 107 is required to provide driving force to move the medium in the system from the positive pressure side to the negative pressure side, thereby realizing the flow and venting of the medium in the pipeline. Additionally, in some cases, the actuator 107 can also fill the system with water, achieving water filling and venting. For example, the actuator 107 can be a drive pump, capable of withstanding high system static pressure, possessing a driving capacity of approximately 4 bar, and capable of stepless speed regulation.

[0076] like Figure 5 As shown, in the drive exhaust mode, the first main pipeline 21 of the dual-pipe differential pressure transmitter system 2 is connected to the positive pressure side pipeline 22, the first end of the positive pressure side interface 101 is connected to the positive pressure side pipeline 22, the second end of the positive pressure side interface 101 is connected to the first end of the filter monitor 103 via the first isolation valve 102, the second end of the filter monitor 103 is connected to the first end of the negative pressure side interface 105 via the third isolation valve 106 and the driver 107, the second end of the negative pressure side interface 105 is connected to the negative pressure side pipeline 23, and the negative pressure side pipeline 23 is connected to the first main pipeline 21.

[0077] Using the driving force of the driver 107, the medium in the first main pipeline 21 of the dual-pipe differential pressure transmitter system 2 flows back to the first main pipeline 21 after passing through the positive pressure side pipeline 22, the positive pressure side interface 101, the first isolation valve 102, the filter monitor 103, the third isolation valve 106, the driver 107, the negative pressure side interface 105, and the negative pressure side pipeline 23. At the same time, the air is filtered and monitored by the filter monitor 103, and the exhaust of the positive pressure side pipeline 22 and the negative pressure side pipeline 23 is completed.

[0078] In some embodiments, the filter monitor 103 can also be used to filter impurities, helping maintenance personnel to detect air and impurities in the system pipeline and take targeted maintenance measures. The filter monitor 103 includes an observation window for real-time observation of the air and / or impurities inside. For example, the observation window is a transparent quartz glass plate, which is corrosion-resistant and resistant to high temperature and pressure, ensuring long-term product use. The filter monitor 103 also includes an inlet, an outlet, an air filter unit, and an impurity filter unit. There is a gap between the inlet and outlet. The air filter unit is located between the inlet and outlet. When gas enters the air filter unit from the inlet, the gas forms bubbles and accumulates in the upper part of the air filter unit. The air is effectively expelled through the exhaust vent at the top. The outlet is located at the bottom of the air filter unit to ensure that the medium introduced into the system pipeline is gas-free. Additionally, the impurity filter unit is located at the outlet to ensure that impurities remain inside the filter monitor 103 and do not enter the system pipeline.

[0079] In other embodiments, the exhaust device further includes an impurity filter (not shown) for filtering impurities, with the second end of the positive pressure side interface 101 connected to the first end of the first isolation valve 102 via the impurity filter.

[0080] In some embodiments, such as Figure 3 As shown, the exhaust device 1 also includes: a fourth isolation valve 108, a fifth isolation valve 109, a sixth isolation valve 110, a seventh isolation valve 111, and a first external interface 112.

[0081] The first end of the first external interface 112 can be connected to an external water source. The second end of the first external interface 112 is connected to the first end of the seventh isolation valve 111. The second end of the seventh isolation valve 111 is connected to the second end of the first isolation valve 102 and the first end of the filter monitor 103. The first end of the fourth isolation valve 108 is connected to the second end of the driver 107. The second end of the fourth isolation valve 108 is connected to the first end of the fifth isolation valve 109. The second end of the fifth isolation valve 109 is connected to the first end of the negative pressure side interface 105. One of the first ends of the sixth isolation valve 110 is connected to the second end of the second isolation valve 104, and the other end is connected to the second ends of the fourth isolation valve 108 and the first ends of the fifth isolation valve 109. The second end of the sixth isolation valve 110 is connected to the second end of the positive pressure side interface 101 and the first end of the first isolation valve 102. The second end of the negative pressure side interface 105 can also be used to connect to the pressure tapping line 32 of the external single-tube differential pressure transmitter system 3.

[0082] like Figure 6 As shown, in the positive pressure side water filling and venting mode, the first end of the first external interface 112 is connected to an external water source to introduce pure water. The second end of the first external interface 112 is connected to the second end of the positive pressure side interface 101 via the seventh isolation valve 111, filter monitor 103, third isolation valve 106, driver 107, fourth isolation valve 108 and sixth isolation valve 110. The first end of the positive pressure side interface 101 is connected to the positive pressure side pipeline 22 of the dual-tube differential pressure transmitter system 2. The positive pressure side pipeline 22 is connected to the first main pipeline 21 of the dual-tube differential pressure transmitter system 2.

[0083] Using the driving force of the actuator 107, external water is used to fill the positive pressure side pipeline 22 through the first external interface 112, the seventh isolation valve 111, the filter monitor 103, the third isolation valve 106, the actuator 107, the fourth isolation valve 108, the sixth isolation valve 110 and the positive pressure side interface 101. At the same time, the air is filtered and monitored by the filter monitor 103 to complete the venting of the positive pressure side pipeline 22.

[0084] like Figure 7 As shown, in the negative pressure side water filling and venting mode, the first end of the first external interface 112 is connected to an external water source to introduce pure water. The second end of the first external interface 112 is connected to the first end of the negative pressure side interface 105 via the seventh isolation valve 111, filter monitor 103, third isolation valve 106, driver 107, fourth isolation valve 108 and fifth isolation valve 109. The second end of the negative pressure side interface 105 is connected to the negative pressure side pipeline 23 of the dual-tube differential pressure transmitter system 2. The negative pressure side pipeline 23 is connected to the first main pipeline 21 of the dual-tube differential pressure transmitter system 2.

[0085] Using the driving force of the actuator 107, external water is used to fill the negative pressure side pipeline 23 through the first external interface 112, the seventh isolation valve 111, the filter monitor 103, the third isolation valve 106, the actuator 107, the fourth isolation valve 108, the fifth isolation valve 109 and the negative pressure side interface 105. At the same time, the air is filtered and monitored by the filter monitor 103 to complete the venting of the negative pressure side pipeline 23.

[0086] like Figure 9 As shown, in the single-pipe water filling and venting mode, the first end of the first external interface 112 is connected to an external water source to introduce pure water. The second end of the first external interface 112 is connected to the first end of the negative pressure side interface 105 via the seventh isolation valve 111, filter monitor 103, third isolation valve 106, driver 107, fourth isolation valve 108 and fifth isolation valve 109. The second end of the negative pressure side interface 105 is connected to the pressure tapping side pipeline 32 of the single-pipe differential pressure transmitter system 3. The pressure tapping side pipeline 32 is connected to the second main pipeline 31 of the single-pipe differential pressure transmitter system 3.

[0087] Using the driving force of the driver 107, external water is used to fill the pressure tapping pipeline 32 of the single-tube differential pressure transmitter system 3 through the first external interface 112, the seventh isolation valve 111, the filter monitor 103, the third isolation valve 106, the driver 107, the fourth isolation valve 108, the fifth isolation valve 109 and the negative pressure side interface 105. At the same time, the air is filtered and monitored by the filter monitor 103 to complete the venting of the pressure tapping pipeline 32.

[0088] like Figure 10 As shown, in the first pipeline water filling and venting mode, the first end of the first external interface 112 is connected to an external water source to introduce pure water. The second end of the first external interface 112 is connected to the second end of the positive pressure side interface 101 via the seventh isolation valve 111, filter monitor 103, third isolation valve 106, driver 107, fourth isolation valve 108 and sixth isolation valve 110. The first end and the second end of the positive pressure side interface 101 are connected to the first pipeline 241 of the dual-pipe differential pressure transmitter 24 in the dual-pipe differential pressure transmitter system 2. The first pipeline 241 is connected to the first venting valve 243.

[0089] Using the driving force of the driver 107, external water is used to fill the first pipeline 241 of the dual-pipe differential pressure transmitter 24 through the first external interface 112, the seventh isolation valve 111, the filter monitor 103, the third isolation valve 106, the driver 107, the fourth isolation valve 108, the sixth isolation valve 110 and the positive pressure side interface 101. At the same time, the air is filtered and monitored by the filter monitor 103 to complete the venting of the first pipeline 241.

[0090] like Figure 11As shown, in the second pipeline water filling and venting mode, the first end of the first external interface 112 is connected to an external water source to introduce pure water. The second end of the first external interface 112 is connected to the first end of the negative pressure side interface 105 via the seventh isolation valve 111, filter monitor 103, third isolation valve 106, driver 107, fourth isolation valve 108 and fifth isolation valve 109. The second end of the negative pressure side interface 105 is connected to the second pipeline 242 of the dual-pipe differential pressure transmitter 24 in the dual-pipe differential pressure transmitter system 2. The second pipeline 242 is connected to the second venting valve 244.

[0091] Using the driving force of the driver 107, external water is supplied to the second pipeline 242 of the dual-pipe differential pressure transmitter 24 after passing through the first external interface 112, the seventh isolation valve 111, the filter monitor 103, the third isolation valve 106, the driver 107, the fourth isolation valve 108, the fifth isolation valve 109 and the negative pressure side interface 105. At the same time, the air is filtered and monitored by the filter monitor 103, and the air in the second pipeline 242 is vented.

[0092] In some embodiments, such as Figure 3 As shown, the exhaust device 1 also includes: a third isolation valve 106, a second external interface 113 and an eighth isolation valve 114.

[0093] The first end of the positive pressure side interface 101 can also be used to connect to the pressure tapping line 32 of the external single-tube differential pressure transmitter system 3. The second end of the filter monitor 103 is connected to the first end of the second isolation valve 104 and the first end of the third isolation valve 106, respectively. The second end of the third isolation valve 106 is connected to the second external interface 113 via the eighth isolation valve 114.

[0094] like Figure 8 As shown, in the single-pipe drainage and exhaust mode, the first end of the positive pressure side interface 101 is used to connect to the pressure tapping side pipeline 32 of the single-pipe differential pressure transmitter system 3, and the second end of the positive pressure side interface 101 is connected to the outside world through the first isolation valve 102, the filter monitor 103, the third isolation valve 106, the eighth isolation valve 114, and the second external interface 113.

[0095] In the dual-pipe differential pressure transmitter system 2, the medium in the first main pipeline 21 is discharged to the outside through the positive pressure side pipeline 22, the positive pressure side interface 101, the first isolation valve 102, the filter monitor 103, the third isolation valve 106, the eighth isolation valve 114, and the second external interface 113. At the same time, the air is filtered and monitored by the filter monitor 103, thus completing the exhaust of the pressure tapping side pipeline 32.

[0096] In some embodiments, such as Figure 3 As shown, the exhaust device also includes: a second external interface 113 and an eighth isolation valve 114.

[0097] The first end of the driver 107 is connected to the second end of the third isolation valve 106 and the first end of the eighth isolation valve 114, respectively. The second end of the eighth isolation valve 114 is connected to the first end of the second external interface 113, and the second end of the second external interface 113 can be used to connect to an external water source.

[0098] As shown in FIG. 1, the first end of the first external interface 112 is connected to the second end of the seventh isolation valve 111, and the second end of the seventh isolation valve 111 is connected to the first end of the filter monitor 103. The second end of the filter monitor 103 is connected to the first end of the second isolation valve 104, and the second end of the second isolation valve 104 is connected to the first end of the fourth isolation valve 108. The second end of the fourth isolation valve 108 is connected to the first end of the eighth isolation valve 114, and the second end of the eighth isolation valve 114 is connected to the first end of the second external interface 113. Figure 12 As shown in FIG. 1, the first end of the first external interface 112 is connected to the second end of the seventh isolation valve 111, and the second end of the seventh isolation valve 111 is connected to the first end of the filter monitor 103. The second end of the filter monitor 103 is connected to the first end of the second isolation valve 104, and the second end of the second isolation valve 104 is connected to the first end of the fourth isolation valve 108. The second end of the fourth isolation valve 108 is connected to the first end of the eighth isolation valve 114, and the second end of the eighth isolation valve 114 is connected to the first end of the second external interface 113.

[0099] The driving force of the driver 107 is used to make the external water pass through the second external interface 113, the eighth isolation valve 114, the fourth isolation valve 108, the second isolation valve 104, the filter monitor 103, the seventh isolation valve 111, and the first external interface 112, and then discharge to the outside, so as to clean the filter monitor 103.

[0100] In some embodiments, the exhaust device further comprises an adjusting valve 115 for adjusting the flow. The second end of the eighth isolation valve 114 is connected to the first end of the second external interface 113 through the adjusting valve 115.

[0101] In some embodiments, the entire exhaust device 1 adopts a portable mobile box structure. The exhaust device 1 further comprises a power supply box, which is electrically connected to the double-tube differential pressure transmitter 24 or the single-tube differential pressure transmitter 33, for providing direct current (such as 24V) to the transmitter, and for providing resistance (such as 250 ohms) to the maintenance personnel for measuring the output voltage conversion of the transmitter. The power supply box is also electrically connected to the driver 107, for providing alternating current (such as 220V) to the driver 107 or for providing power to the driver 107 through a storage battery. In addition, the power supply box is also provided with a wiring device connected to the output measurement port of the double-tube differential pressure transmitter 24 or the single-tube differential pressure transmitter 33, which can conveniently realize the connection of the transmitter signal to the power supply box, and facilitate the real-time monitoring of the transmitter state and the monitoring of the water filling and exhaust effect.

[0102] In some embodiments, the positive pressure side interface 101 is connected to the positive pressure side pipeline 22 (specifically, the third interface of the positive pressure side three-way valve 27), the first pipeline 241 (specifically, the third interface of the positive pressure side three-way valve 27), or the third pipeline 331 (specifically, the ninth interface of the pressure tapping side three-way valve 35) via a flexible hose, and the negative pressure side interface 105 is connected to the negative pressure side pipeline 23 (specifically, the sixth interface of the negative pressure side three-way valve 28), the second pipeline 242 (specifically, the sixth interface of the negative pressure side three-way valve 28), or the third pipeline 331 (specifically, the ninth interface of the pressure tapping side three-way valve 35) via a flexible hose. For example, the flexible hose is a rubber hose; the use of a rubber hose here is merely an example and not intended to limit this application, and other types are also possible.

[0103] In some embodiments, the first isolation valve 102, the second isolation valve 104, the third isolation valve 106, the fourth isolation valve 108, the fifth isolation valve 109, the sixth isolation valve 110, the seventh isolation valve 111, and the eighth isolation valve 114 are solenoid valves. The solenoid valves mentioned here are only examples and are not intended to be the only limitation of this application. Other valves may also be used.

[0104] Some embodiments of this utility model also disclose an exhaust system, including a dual-tube differential pressure transmitter system 2 or a single-tube differential pressure transmitter system 3, and also includes the exhaust device 1 described in any of the above embodiments, which will not be repeated here.

[0105] It is understood that the above embodiments only illustrate some implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can freely combine the above embodiments or technical features without departing from the concept of this utility model, and can also make several modifications and improvements, all of which fall within the protection scope of this utility model. That is, the embodiments described "in some embodiments" can be freely combined with any of the preceding and following embodiments. Therefore, all equivalent transformations and modifications made within the scope of the claims of this utility model should fall within the coverage of the claims of this utility model.

Claims

1. An exhaust device, characterized in that, include: The system includes a positive pressure side port (101), a first isolation valve (102), a filter monitor (103), a second isolation valve (104), and a negative pressure side port (105); the filter monitor (103) is used for filtering and monitoring air. The first end of the positive pressure side interface (101) can be used to connect to the positive pressure side pipeline (22) of the external dual-tube differential pressure transmitter system (2), the second end of the positive pressure side interface (101) is connected to the first end of the first isolation valve (102), and the second end of the first isolation valve (102) is connected to the first end of the filter monitor (103). The second end of the filter monitor (103) is connected to the first end of the second isolation valve (104), and the second end of the second isolation valve (104) is connected to the first end of the negative pressure side interface (105). The second end of the negative pressure side interface (105) can be used to connect to the negative pressure side pipeline (23) of the external dual-tube differential pressure transmitter system (2).

2. The exhaust device according to claim 1, characterized in that, The exhaust device further includes: a third isolation valve (106) and a driver (107); The second end of the filter monitor (103) is connected to the first end of the second isolation valve (104) and the first end of the third isolation valve (106), respectively. The second end of the third isolation valve (106) is connected to the first end of the actuator (107), and the second end of the actuator (107) is connected to the first end of the negative pressure side interface (105).

3. The exhaust device according to claim 2, characterized in that, The exhaust device further includes: a fourth isolation valve (108), a fifth isolation valve (109), a sixth isolation valve (110), a seventh isolation valve (111), and a first external interface (112); The first end of the first external interface (112) can be used to connect to an external water source, the second end of the first external interface (112) is connected to the first end of the seventh isolation valve (111), and the second end of the seventh isolation valve (111) is connected to the second end of the first isolation valve (102) and the first end of the filter monitor (103) respectively. The first end of the fourth isolation valve (108) is connected to the second end of the driver (107), the second end of the fourth isolation valve (108) is connected to the first end of the fifth isolation valve (109), and the second end of the fifth isolation valve (109) is connected to the first end of the negative pressure side interface (105). One end of the sixth isolation valve (110) is connected to the second end of the second isolation valve (104), and the other end is connected to the second end of the fourth isolation valve (108) and the first end of the fifth isolation valve (109); The second end of the sixth isolation valve (110) is connected to the second end of the positive pressure side interface (101) and the first end of the first isolation valve (102), respectively; The second end of the negative pressure side interface (105) can also be used to connect to the pressure tapping side pipeline (32) of the external single-tube differential pressure transmitter system (3).

4. The exhaust device according to claim 1, characterized in that, The exhaust device also includes: a third isolation valve (106), a second external interface (113), and an eighth isolation valve (114); The first end of the positive pressure side interface (101) can also be used to connect to the pressure tapping side pipeline (32) of the external single tube differential pressure transmitter system (3); The second end of the filter monitor (103) is connected to the first end of the second isolation valve (104) and the first end of the third isolation valve (106), respectively; The second end of the third isolation valve (106) is connected to the second external interface (113) via the eighth isolation valve (114).

5. The exhaust device according to claim 3, characterized in that, The exhaust device further includes: a second external interface (113) and an eighth isolation valve (114); The first end of the driver (107) is connected to the second end of the third isolation valve (106) and the first end of the eighth isolation valve (114), respectively. The second end of the eighth isolation valve (114) is connected to the first end of the second external interface (113), and the second end of the second external interface (113) can also be used to connect to an external water source.

6. The exhaust device according to claim 4 or 5, characterized in that, The exhaust device further includes: a regulating valve (115) for regulating the flow rate; The second end of the eighth isolation valve (114) is connected to the first end of the second external interface (113) via the regulating valve (115).

7. The exhaust device according to claim 1, characterized in that, The filter monitor (103) includes an observation window for real-time observation of the air conditions inside the filter monitor (103).

8. The exhaust device according to claim 1, characterized in that, The filter monitor (103) includes: an inlet, an outlet, an air filter unit disposed between the inlet and the outlet, and an impurity filter unit disposed at the outlet.

9. The exhaust device according to claim 1, characterized in that, The exhaust device further includes: an impurity filter; The second end of the positive pressure side interface (101) is connected to the first end of the first isolation valve (102) via the impurity filter.

10. An exhaust system, characterized in that, It includes a dual-tube differential pressure transmitter system (2) or a single-tube differential pressure transmitter system (3), and also includes the exhaust device according to any one of claims 1-9.

Images