Flushing device, flushing method, and flushing system

Abstract

The invention relates to a purging device (10) for purging a control section (110) of a gas-carrying line (100), the purging device (10) comprising a supply interface (30) for coupling the purging device (10) with the control section (110) and for supplying purging gas (I) into the control section (110), a purging gas interface (40) for coupling a purging gas source (150) with the purging device (10), wherein the supply interface (30) and the purging gas interface (40) are fluidly connected to each other, and a withdrawal interface (20) for coupling the purging device (10) with the control section (110) and for withdrawal of gas (G) from the control section (110), wherein the purging device (10) further comprises a measuring device (50) downstream of the withdrawal interface (20) for measuring the gas (G) from the control section (110).Furthermore, the invention relates to a flushing method (200) for flushing a control section (110) of a gas-carrying line (100) by means of a flushing device (10) and a flushing system (190).

Description

[0001] The present invention relates to a flushing device for flushing a control section of a gas-carrying pipeline. The invention further relates to a flushing method for flushing a control section of a gas-carrying pipeline using a flushing device. The invention also relates to a flushing system comprising a flushing device and a gas-carrying pipeline with a control section.

[0002] The currently publicly known gas networks comprise a multitude of devices that can be shut off for maintenance, repairs, and / or replacement, thus ensuring fluid communication with the gas network. In Germany, the regulations governing the operation of, for example, gas pressure regulating and metering systems are set out in the DVGW (German Technical and Scientific Association for Gas and Water) code. In particular, DVGW worksheets G491 and G495 contain specifications that reflect the state of the art and define the necessary work steps.

[0003] For example, in well-known gas pressure regulating and metering systems, and also in other gas installations with similar emission problems, during functional checks, maintenance work, and / or other tasks, the gas standing at elevated pressure in the isolated sections of the system is discharged into the downstream network via a regulator. Once pressure equalization or a minimum residual pressure relative to the downstream network has been achieved, a rear shut-off valve is usually closed. The remaining gas is then typically vented to the atmosphere via vent lines. During this process, the residual gas escapes at atmospheric pressure from the lines when filters, regulators, or other fittings are opened.

[0004] After the relevant work, such as maintenance, the air in the system components is expelled into the atmosphere via the discharge lines using the regular transport medium by opening a front shut-off element. In this process, indeterminate quantities of the medium usually escape again.

[0005] It is therefore an object of the present invention to overcome, or at least partially overcome, the disadvantages described above in the prior art. In particular, it is an object of the invention to provide a purging device that makes purging a control section of a gas-carrying line particularly easy, especially whereby the escape of gas into the atmosphere is reduced and / or prevented. In particular, it is further an object of the invention to provide a purging method for purging a control section of a gas-carrying line by means of a purging device, as well as a purging system comprising a purging device and a gas-carrying line with a control section.

[0006] The inventive solution helps to reduce emissions of flammable gases from the gas pipeline into the atmosphere, which currently mostly arise from work such as functional checks and / or maintenance work on plant components.

[0007] The foregoing problem is solved by the claims. In particular, the problem is solved by a flushing device for flushing a control section of a gas-carrying line, comprising the features of independent claim 1. Furthermore, the problem is solved by a flushing method for flushing a control section of a gas-carrying line by means of a flushing device comprising the features of independent claim 11, and by a flushing system comprising a flushing device and a gas-carrying line with a control section comprising the features of independent claim 13. Further advantages and details of the invention will become apparent from the dependent claims, the description, and the drawings.Features described in connection with the rinsing device according to the invention naturally also apply in connection with the rinsing method and the rinsing system according to the invention, and vice versa, so that the disclosure regarding the individual aspects of the invention always makes or can make reciprocal reference.

[0008] According to a first aspect of the invention, the problem is solved by a purging device for purging a control section of a gas-carrying line, the purging device comprising a supply interface for coupling the purging device with the control section and for supplying purging gas into the control section, a purging gas interface for coupling a purging gas source with the purging device, wherein the supply interface and the purging gas interface are fluidly connected to each other, and a withdrawal interface for coupling the purging device with the control section and for withdrawing gas from the control section, wherein the purging device further comprises a measuring device downstream of the withdrawal interface for measuring the gas from the control section.

[0009] Within the scope of the invention, the gas-carrying line is preferably understood to be a natural gas and / or hydrogen line. In practice, the purging device according to the invention is preferably installed after the previously described step of pressure equalization of the control section relative to the gas-carrying line and / or at a control section with minimal residual pressure relative to a downstream network and after the closing of a rear shut-off device, for example in the form of a shut-off valve, at the rear end of the control section. The purging device according to the invention preferably allows the supply of a purging gas, preferably an inerting gas, for example nitrogen, into the control section in order to force the residual gas in the control section out of the control section at a suitable overpressure from a purging gas source, for example a gas cylinder, and / or by means of a conveying device for the purging gas source.The use of air as a purge gas is, of course, not permitted due to explosion protection requirements. Furthermore, the control section is preferably sealed off from the gas-carrying line upstream of the control section by a front sealing device via fluid communication. In other words, the control section is preferably sealed off from the gas-carrying line by a front and a rear sealing device.

[0010] The purging device allows the supply interface and the extraction interface to be coupled to the control section. The coupling of the supply interface and the extraction interface to the control section is preferably designed to be detachable, in particular detachable without tools. Thus, the purging device enables the supply of purge gas to the control section through the supply interface and the extraction of gas and / or purge gas from the control section through the extraction interface. In other words, the purging device enables the purging of the control section with purge gas and thus the extraction of gas from the control section.

[0011] The extraction interface is preferably connected downstream to the gas-carrying line or a storage device for removing the gas from the controlled area, as described in detail in a later section.

[0012] The purging device is particularly advantageous because it includes a measuring device downstream of the extraction interface for measuring the gas from the control section. This measuring device thus enables monitoring of the purging process's progress and / or verification of whether gas from the control section is still being forced through the supplied purge gas. For example, the purging device detects the flammable gas content via at least one corresponding sensor in the measuring device. Alternatively or additionally, the mass flow can be detected by at least one corresponding sensor in the measuring device. This allows for a comparison of the pumped volume in the relevant system section with the residual flammable gas content, for instance, to ensure verification of the measurement results.The rinsing process can now be performed and / or stopped manually or automatically by the rinsing device and / or a user.

[0013] The flushing device is preferably intended to be mobile. In other words, it is preferably portable and therefore advantageously flexible and quick for the user to deploy at a large number of inspection points on gas-carrying pipelines. To illustrate this, the flushing device is designed within a housing and / or case.

[0014] A flushing device designed in this way is particularly advantageous because it makes flushing a control section of a gas-carrying pipeline particularly easy, thereby advantageously reducing or preventing the escape of gas from the control section into the environment.

[0015] According to a preferred embodiment of the invention, a purging device may include a measuring device comprising a pressure measuring device for measuring at least one pressure within the measuring device, a concentration measuring device for measuring at least one gas concentration within the measuring device and / or in the vicinity of the measuring device, and / or a mass flow measuring device for measuring at least one mass flow within the measuring device. Within the scope of the invention, the measuring device serves to verify whether the control section is free of flammable gas and consequently has been filled exclusively or substantially exclusively with purging gas.The phrase "X or essentially X" is to be understood within the scope of the invention as a possible, minor deviation, for example, due to manufacturing tolerances, material and / or process properties, without altering the underlying, intended function of the feature. The measuring device comprises at least one pressure measuring device for measuring at least one pressure within the measuring device. The measuring device additionally or alternatively comprises at least one concentration measuring device for measuring at least one gas concentration within the measuring device and / or in the vicinity of the measuring device. The measurement of the gas concentration in the vicinity of the measuring device is preferably understood as a measurement of a possible leakage of the purge device and / or the gas-carrying line.The measuring device additionally or alternatively comprises at least one mass flow measuring device for measuring at least one mass flow within the measuring device. Such a measuring device advantageously enables, for example, a comparison of the volume pumped from the corresponding control section with the residual content of combustible gas in order to ensure verification of the measurement results. Preferably, the measuring device comprises at least one optical and / or acoustic output device for outputting data and / or warnings.

[0016] A flushing device designed in this way is particularly advantageous due to the design of the measuring device, since flushing a control section of a gas-carrying line and recording the flushing is made particularly easy, thereby advantageously reducing or preventing the escape of gas from the control section into the environment.

[0017] According to a preferred embodiment of the invention, a purging device may include a measuring device comprising an evaluation device for assessing the acquired measured values ​​and / or a transmitting and / or receiving device for transmitting and / or receiving the measured and / or assessed measured values. The evaluation device according to the invention preferably enables gas analysis of the gas and / or purge gas from the control section. An evaluation preferably includes an analysis of the fluid composition, in particular a percentage composition. The measured and / or assessed measured values ​​are preferably transmitted to a server device and / or a storage device and / or receive reference data and / or comparison data from these devices.The server device and / or storage device are preferably defined and / or designed separately from the purging device or as a component of the purging device. A purging device designed in this way is particularly advantageous due to the evaluation device and / or the transmitting and / or receiving device, since purging a control section of a gas-carrying pipeline and evaluating the purging results is made particularly easy, thereby advantageously reducing or preventing the escape of gas from the control section into the environment.

[0018] According to a preferred embodiment of the invention, a purge device may be provided in such a way that the purge gas interface is coupled to a purge gas source of the purge device, in particular wherein the purge gas source is designed as a mobile purge gas source or as a stationary purge gas source. The purge gas source is designed as a component of the purge device or as a separate purge gas source. The purge gas source is to be understood as a mobile purge gas source, for example as a purge gas tank, or as a stationary purge gas source, for example as a purge gas network. A mobile purge gas source is particularly advantageous in combination with a mobile purge device, since this enables a completely mobile and thus flexible use of the purge device. A stationary purge gas source is particularly advantageous because no volume limitation of the purge gas source restricts the purge process of the control section.The purge gas source provides purge gas to the purge device for purging a control section of a gas-carrying pipeline. The purge gas is preferably supplied by the pressure ratio of the purge gas source to the control section. Alternatively or additionally, the purge gas source includes a delivery device for supplying the purge gas to the control section. As described above, the purge gas is preferably an inerting gas, particularly nitrogen. Nitrogen is particularly advantageous as a purge gas for purging a control section of a gas-carrying pipeline because it is inexpensive, heavier than natural gas, and non-flammable.A purging device designed in this way is particularly advantageous due to the design of the purging gas source, since it makes purging a control section of a gas-carrying line particularly easy, thereby advantageously reducing or preventing the escape of gas from the control section into the environment.

[0019] According to a preferred embodiment of the invention, a purging device may be provided in such a way that the supply interface and / or the extraction interface are designed for detachable coupling with the control section and / or that the purge gas interface is designed for detachable coupling with the purge gas source. The coupling of the supply interface and / or the extraction interface with the control section is preferably designed to be detachable, in particular detachable without tools. Thus, the purging device enables simple coupling of the purging device with the control section and / or the gas-carrying line, and subsequently a supply of purge gas into the control section through the supply interface and an extraction of gas and / or purge gas from the control section through the extraction interface.In other words, the purging device allows for easy assembly, purging of the control section with purge gas, and thus gas extraction from the control section, as well as subsequent easy disassembly of the purging device. The detachable couplings are designed, for example, as screw connections and / or push-fit couplings. The couplings preferably include flexible hoses and / or are preferably designed for pressures up to 70 bar or up to 100 bar. A purging device designed in this way is particularly advantageous due to the design of the couplings, as assembly and disassembly of the purging device and purging of a control section of a gas-carrying pipeline are made particularly easy, thereby advantageously reducing or preventing gas from escaping the control section into the environment.

[0020] According to a preferred embodiment of the invention, a purging device may be provided that the feed interface, the extraction interface, and / or the purge gas interface comprise at least one locking device, wherein the at least one locking device can be locked in a fluid-tight manner. Within the scope of the invention, a locking device is preferably understood to be a valve, a shut-off valve, a manual locking device, and / or an automatic locking device. The at least one locking device preferably enables the locking of a fluid-communicating connection of the corresponding section. For example, a locking device of the feed interface in combination with a locking device of the extraction interface preferably enables the locking of the control section after completion of the purging process.A flushing device designed in this way is particularly advantageous due to the inclusion of at least one shut-off device, as it makes flushing a control section of a gas-carrying line especially easy, thereby advantageously reducing or preventing gas from escaping the control section into the environment. Furthermore, the inclusion of at least one shut-off device advantageously allows for the blocking of fluid-communicating connections, thus creating a favorable environment for maintenance work, repairs, and / or measurements on the control section and / or the gas-carrying line.

[0021] According to a preferred embodiment of the invention, a purging device may be provided with a discharge interface downstream of the sampling interface and the measuring device for connecting the purging device to the gas-carrying line, particularly downstream of the control section, and / or to a purging storage device for discharging the extracted gas from the control section. The sampling interface is preferably connected downstream via the discharge interface to the gas-carrying line, particularly downstream of the control section, or to a storage device for discharging the gas from the control section. The extracted gas from the control section is thus preferably fed to the downstream gas network or to a purging storage device. The purging storage device is, for example, designed as a gas tank and serves to discharging the extracted gas from the control section.Preferably, the discharge interface is coupled to the gas-carrying line downstream of the control section. The discharge interface is preferably detachable, in particular detachable without tools, and can be coupled to the gas-carrying line and / or the purge storage device. A purge device designed in this way is particularly advantageous due to the discharge interface, as it enables particularly simple purging of a control section of a gas-carrying line, thereby allowing a defined discharge of gas from the control section into the gas-carrying line and / or into the purge storage device.

[0022] According to a preferred embodiment of the invention, a purging device may be provided that the sampling interface, the measuring device, and / or the discharge interface comprise a filter device for filtering the extracted gas from the control section. The filter device according to the invention is preferably designed as a membrane for filtering the extracted gas from the control section. Additionally or alternatively, the filter device according to the invention is preferably designed as a membrane for separating the gas and purge gas from the control section, in particular to reduce and / or avoid an unnecessary and / or technically impermissible proportion of purge gas in the downstream network and / or to reduce and / or avoid the release of flammable gas into the atmosphere. Preferably, the sampling interface downstream of the filter device comprises a blow-off device.The blow-off device preferably serves to discharge the gas in conjunction with a filter device, in particular a separation membrane, for separating the gas and purge gas in order to release small quantities of mixed gas and / or separated purge gas into the atmosphere. Preferably, the filter device allows for the filtration and passage of the gas from the control section and the blocking of the purge gas and / or other fluids. Such a filter device advantageously enables quality assurance of the gas in the gas-carrying line and the prevention of impurities in the gas. A purge device designed in this way is particularly advantageous due to the filter device, as purging a control section of a gas-carrying line is made particularly easy, whereby a defined discharge of gas, in particular exclusively gas, from the control section into the gas-carrying line is preferably enabled.

[0023] According to a preferred embodiment of the invention, a purging device may be provided that the extraction interface, the supply interface, the purge gas interface, the measuring device, and / or the discharge interface comprise a check valve device for blocking a fluid flow of the gas and / or the purge gas in at least one direction. A check valve device enables only one-way flow through the corresponding line section and consequently blocks a gas flow contrary to the defined flow direction of the check valve device. Thus, the purging device, regardless of the respective pressure conditions, ensures the flow direction of the gas and / or the purge gas and / or prevents an unwanted flow direction of the gas and / or the purge gas.For example, a check valve at the purge gas interface prevents backflow of purge gas to the purge gas source if the pressure in the purge gas source falls to a level below the control section. A purge device designed in this way is particularly advantageous due to the inclusion of at least one check valve, as it makes purging a control section of a gas-carrying line especially easy, while also allowing for a defined flow of gas and / or purge gas.

[0024] According to a preferred embodiment of the invention, a purging device may include an active and / or passive explosion protection device, either the purging device and / or the measuring device. An explosion protection device is preferably understood to protect the purging device against explosions and / or explosion-promoting conditions. By way of example, a passive explosion protection device is understood to be a potting compound applied at least partially around the measuring device to prevent heat and / or spark sources in the vicinity of the gas-carrying line. An active explosion protection device is understood, for example, to be a detection device for detecting gas leaks, heat generation, and / or for fault detection in the purging device.A flushing device designed in this way is particularly advantageous due to the inclusion of at least one explosion protection device, as it makes flushing a control section of a gas-carrying line particularly easy, thereby advantageously ensuring the safety of the operation of the flushing device and / or the gas-carrying line.

[0025] According to a second aspect of the invention, the problem is solved by a flushing method for flushing a control section of a gas-carrying pipeline using a flushing device. The flushing method comprises: Coupling of a supply interface of the purging device with a control section of the gas-carrying line, coupling of a purging gas interface of the purging device with a purging gas source, coupling of a withdrawal interface of the purging device with a control section of the gas-carrying line, supply of purging gas into the control section through the supply interface, withdrawal of gas from the control section through the withdrawal interface, measuring of the withdrawn gas from the control section.

[0026] Unless explicitly stated otherwise, the process steps described above and below can be executed individually, together, once, multiple times, concurrently, and / or sequentially in any order. Designating them as, for example, "first process step" and "second process step" does not imply any chronological order or prioritization. A preferred order for the process steps is that they are executed in the sequence listed.

[0027] Preferably, the purging device is configured according to the first aspect such that the described purging method offers all the advantages already described for the purging device according to the first aspect of the invention. Preferably, the purging method includes an evaluation of the measured gas. Preferably, the purging method includes a discharge of the extracted gas from the control section via a discharge interface of the purging device into the gas-carrying line, in particular downstream of the control section, and / or into a purging storage device of the purging device. Preferably, the purging method includes a locking device of at least one locking device of the purging device, in particular the feed interface, the extraction interface, and / or the purging gas interface. The locking is preferably performed depending on the measured extracted gas from the control section.Such a flushing procedure is particularly advantageous because it makes flushing a control section of a gas-carrying pipeline particularly easy, thereby advantageously reducing or preventing the escape of gas from the control section into the environment.

[0028] According to a preferred embodiment of the invention, a purging process can be provided in such a way that the supply of purging gas to the control section and / or the withdrawal of gas from the control section is dependent on the measured amount of gas withdrawn from the control section. For the dependent supply and / or withdrawal, the purging device preferably comprises locking devices and / or actuating devices for the locking devices, wherein, for example, the actuating devices open and / or close the locking devices depending on the measured amount of gas withdrawn from the control section. Preferably, the purging process allows a comparison of the measured gas with at least one limit value, wherein the supply of purging gas is stopped when the limit value is reached or fallen below.Thus, the purging method according to the invention advantageously enables verification of the purging process and preferably automatic cessation of the purging process when only the limit value for the gas or no gas is measured from the control section. A purging method designed in this way is particularly advantageous because it enables purging of a control section of a gas-carrying pipeline in a particularly simple and efficient manner, advantageously reducing or preventing the escape of gas from the control section into the environment.

[0029] According to a third aspect of the invention, the problem is solved by a purging system comprising a purging device and a gas-carrying line with a control section. The purging device is designed according to the first aspect, such that the described purging system offers all the advantages already described for the purging device according to the first aspect of the invention. The gas-carrying line preferably has corresponding negative feedback connections for coupling with the supply interface, the withdrawal interface, and / or the discharge interface. A purging system designed in this way is particularly advantageous because it enables purging of a control section of a gas-carrying line to be particularly easy, thereby advantageously reducing or preventing the escape of gas from the control section into the environment.

[0030] According to a preferred embodiment of the invention, a purging system can be provided in such a way that the control section can be sealed off from the gas-carrying line by at least one sealing device, preferably by two sealing devices, in a fluid-tight manner. To create a defined section for maintenance and / or repairs within the control section, it is particularly advantageous to be able to seal off the fluid-communicating connection of this section from the rest of the gas-carrying line by means of the at least one sealing device. A purging system designed in this way is particularly advantageous due to the at least one sealing device, since purging a defined control section of a gas-carrying line is made particularly easy, thereby advantageously reducing or preventing the escape of gas from the control section into the environment.

[0031] According to a preferred further development of the invention, a rinsing system can be designed to carry out the rinsing process according to the second aspect, so that the described rinsing system offers all the advantages that have already been described for the rinsing process according to the second aspect of the invention.

[0032] A rinsing device, a rinsing system, and a rinsing method according to the invention are explained in more detail below with reference to the drawings. The drawings schematically show: Figure 1 in a perspective view shows a flushing system with a flushing device and a gas-carrying line with a control section, Figure 2 in a perspective view shows another flushing system with a flushing device and a gas-carrying line with a control section, and Figure 3 in a flow diagram shows an embodiment of the flushing method according to the invention.

[0033] Elements with the same function and mode of action are listed in the Fig. 1 to 3 each provided with the same reference numerals.

[0034] In Fig. 1A flushing system 190 with a flushing device 10 and a gas-carrying line 100 with a control section 110 is shown schematically in a perspective view. The flushing device 10 is designed to flush the control section 110 of the gas-carrying line 100. The purging device 10 comprises a feed interface 30 for coupling the purging device 10 with the control section 110 and for supplying purging gas I into the control section 110, a purging gas interface 40 for coupling a purging gas source 150 with the purging device 10, wherein the feed interface 30 and the purging gas interface 40 are fluidly connected to each other, and a withdrawal interface 20 for coupling the purging device 10 with the control section 110 and for withdrawal of gas G from the control section 110, wherein the purging device 10 further comprises a measuring device 50 downstream of the withdrawal interface 20 for measuring the gas G from the control section 110.The measuring device 50 comprises a pressure measuring device 52 for measuring pressure within the measuring device 50, a concentration measuring device 54 for measuring gas concentration within and around the measuring device 50, and a mass flow measuring device 56 for measuring mass flow within the measuring device 50. The measuring device 50 also includes an evaluation device 58 for evaluating the acquired measured values ​​and a transmit and / or receive device 60 for transmitting and / or receiving the measured and / or evaluated measured values. The purge gas interface 40 is coupled to a purge gas source 150 of the purge device 10, the purge gas source 150 being designed as a mobile purge gas source 150. The feed interface 30 and the extraction interface 20 are designed for detachable coupling with the control section 110. The purge gas interface 40 is also designed for detachable coupling with the purge gas source 150.The extraction interface 20 comprises a locking device 14, wherein the locking device 14 can be locked in a fluid-tight manner. The purging device 10 comprises, downstream of the extraction interface 20 and the measuring device 50, a discharge interface 70 for coupling the purging device 10 to the gas-carrying line 100, here downstream of the control section 110, for discharge of the extracted gas G from the control section 110. The extraction interface 20 comprises a filter device 80 for filtering the extracted gas G from the control section 110. The supply interface 30 comprises a non-return valve device 90 for blocking a fluid flow of the gas G and the purge gas I in one direction. The measuring device 50 comprises a passive explosion protection device 12 in the form of a potted casing. The control section 110 can be sealed fluid-tight against the gas-carrying line 100 by two locking devices 112 of the gas-carrying line 100.

[0035] In Fig. 2 A further flushing system 190 with a flushing device 10 and a gas-carrying line 100 with a control section 110 is shown schematically in a perspective view. Further details regarding Fig. 1 Furthermore, the purging device 10 downstream of the extraction interface 20 and the measuring device 50 includes a discharge interface 70 for coupling the purging device 10 with a purging storage device 72 for discharging the extracted gas G from the control section 110.

[0036] In Fig. 3 A schematic flowchart shows an embodiment of the rinsing process 200 according to the invention. For improved clarity, in Fig. 3Only the reference numerals of the process steps are given. The purging process 200 comprises, in a first process step, the coupling 202 of a supply interface 30 of the purging device 10 with a control section 110 of the gas-carrying line 100. The purging process 200 comprises, in a further process step, the coupling 204 of a purging gas interface 40 of the purging device 10 with a purging gas source 150. The purging process 200 comprises, in a further process step, the coupling 206 of a withdrawal interface 20 of the purging device 10 with a control section 110 of the gas-carrying line 100. The purging process 200 comprises, in a further process step, the supply 208 of purging gas I into the control section 110 through the supply interface 30. The purging process 200 comprises, in a further process step, the withdrawal 210 of gas G from the control section 110 through the withdrawal interface 20.The purging process 200 includes in a further process step the measurement 212 of the extracted gas G from the control section 110. The supply 208 of purging gas I to the control section 110 and the extraction 210 of gas G from the control section 110 are carried out depending on the measured extracted gas G from the control section 110. List of symbols

[0037] 10 Flushing device 12 Explosion protection device 14 Locking device 20 Extraction interface 30 Feed interface 40 Purge gas interface 50 Measuring device 52 Pressure measuring device 54 Concentration measuring device 56 Mass flow measuring device 58 Evaluation device 60 Transmitting and / or receiving device 70 Drainage interface 72 Flushing storage device 80 filter device 90 Non-return valve device 100 Line 110 Control section 112 Locking device 150 Purge gas source 190 Flushing system 200 Flushing process 202 Coupling 204 Coupling 206 Coupling 208 Feeding 210 Removal 212 Measuring GGas IFlushing gas

Claims

1. Flushing device (10) for flushing a control section (110) of a gas-conducting line (100), the flushing device (10) comprising a supply interface (30) for coupling the flushing device (10) to the control section (110) and for supplying flushing gas (I) into the control section (110), a flushing gas interface (40) for coupling a flushing gas source (150) to the flushing device (10), wherein the supply interface (30) and the flushing gas interface (40) are connected to one another in a fluid-communicating manner, and a removal interface (20) for coupling the flushing device (10) to the control section (110) and for removing gas (G) from the control section (110), wherein the flushing device (10) further comprises a measuring device (50) downstream of the removal interface (20) for measuring the gas (G) from the control section (110).

2. Flushing device (10) according to claim 1, characterized by thatthe measuring device (50) comprises a pressure measuring device (52) for measuring at least one pressure within the measuring device (50), a concentration measuring device (54) for measuring at least one gas concentration within the measuring device (50) and / or in the environment of the measuring device (50) and / or a mass flow measuring device (56) for measuring at least one mass flow within the measuring device (50).

3. Flushing device (10) according to one of the preceding claims, characterized by that the measuring device (50) comprises an evaluation device (58) for evaluating the recorded measured values and / or that the measuring device (50) comprises a transmitting and / or receiving device (60) for transmitting and / or receiving the measured and / or evaluated measured values.

4. Flushing device (10) according to one of the preceding claims, characterized by thatthe purge gas interface (40) is coupled to a purge gas source (150) of the purge device (10), in particular wherein the purge gas source (150) is designed as a mobile purge gas source (150) or as a stationary purge gas source (150).

5. Flushing device (10) according to one of the preceding claims, characterized by that the supply interface (30) and / or the removal interface (20) are designed for detachable coupling to the control section (110) and / or that the purge gas interface (40) is designed for detachable coupling to the purge gas source (150).

6. Flushing device (10) according to one of the preceding claims, characterized by that the supply interface (30), the removal interface (20) and / or the purge gas interface (40) comprises at least one blocking device (14), wherein the at least one blocking device (14) can be blocked in a fluid-tight manner.

7. Flushing device (10) according to one of the preceding claims, characterized by that the purging device (10) comprises, downstream of the extraction interface (20) and the measuring device (50), a discharge interface (70) for coupling the purging device (10) to the gas-conducting line (100), in particular downstream of the control section (110), and / or to a purging storage device (72) for discharging the extracted gas (G) from the control section (110).

8. Flushing device (10) according to one of the preceding claims, characterized by that the extraction interface (20), the measuring device (50) and / or the discharge interface (70) comprises a filter device (80) for filtering the extracted gas (G) from the control section (110).

9. Flushing device (10) according to one of the preceding claims, characterized by thatthe extraction interface (20), the supply interface (30), the purge gas interface (40), the measuring device (50) and / or the discharge interface (70) comprises a check valve device (90) for blocking a fluid flow of the gas (G) and / or the purge gas (I) in at least one direction.

10. Flushing device (10) according to one of the preceding claims, characterized by that the flushing device (10) and / or the measuring device (50) comprises an active and / or passive explosion protection device (12).

11. Flushing method (200) for flushing a control section (110) of a gas-conducting line (100) by a flushing device (10), the flushing method (200) comprising: - coupling (202) a supply interface (30) of the flushing device (10) to a control section (110) of the gas-conducting line (100), - coupling (204) a purge gas interface (40) of the purge device (10) to a purge gas source (150), - coupling (206) a removal interface (20) of the purge device (10) to a control section (110) of the gas-conducting line (100), - supply (208) of purge gas (I) into the control section (110) through the supply interface (30), - removal (210) of gas (G) from the control section (110) through the removal interface (20), - measuring (212) the removed gas (G) from the control section (110).

12. Flushing method (200) according to claim 11, characterized by thatthe supply (208) of purge gas (I) into the control section (110) and / or the removal (210) of gas (G) from the control section (110) takes place depending on the measured removed gas (G) from the control section (110).

13. Purging system (190) comprising a purging device (10) and a gas-carrying line (100) with a control section (110), characterized by that the flushing device (10) is designed according to one of the preceding claims 1 to 10.

14. Flushing system (190) according to claim 13, characterized by that the control section (110) can be blocked in a fluid-tight manner against the gas-conducting line (100) by at least one blocking device (112) of the gas-conducting line (100), preferably by two blocking devices (112).

15. Flushing system (190) according to claim 13 or 14, characterized by thatthe rinsing system (190) is designed to carry out the rinsing method (200) according to one of the preceding claims 11 or 12.

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