DE202018103234U1 - Odoration device, odorization nozzle, change lock - Google Patents

Abstract

An odorizing device (100) for odorizing a gas (SG) guided in a gas line (800), comprising:
a connection piece (110) for producing a gas-conducting connection with a gas line (800),
an odorization inlet (210) adapted to supply an odorant (SO) and
an odorizing nozzle (200) designed to introduce the odorizing agent (SO) into the gas line (800), characterized in that
- The odorizing device (100) having a connection piece (110) connectable change lock (120) with a lock chamber (122), wherein
- The change lock (120) has a lock-side lock valve (141.1), which is arranged and designed to set a lock pressure (PS) in a lock section (122.1) of the lock chamber (122).

Description

The invention relates to an odorizing device for odorizing a gas guided in a gas line. The odorizing device has a connecting piece for producing a gas-conducting connection with a gas line, an odorization inlet and an odorizing nozzle. The odorization port is configured to supply an odorant, and the odorant nozzle is configured to introduce the odorant into the gas line.

Odorierungsvorrichtungen such as the aforementioned are well known. Such devices serve to odorize gas, in particular to naturally odorless gas, such as natural gas, to make perceptible to the human sense of smell. Via an odorization nozzle, which is arranged at least partially within a gas line into which gas to be odorized flows, an odorant, the so-called odorant, can be introduced into the gas line and thus supplied to the gas. Via an adjusting means for influencing the Odorierungsmittel-flow, for example via an adjustable valve, the degree of odorization can be varied and in particular adapted to a flow rate of the gas.

Odorizing nozzles may wear and / or foul depending on operational factors such as the quality of the gas being delivered, the odorant flow rate and the operating time, thereby compromising the functionality of the odorizing apparatus.

Attempts to remove the odorization nozzle from the gas line and exchange it with outflow of gas are associated with significant risk due to the uncontrolled escaping gas.

Therefore, odorizers with replaceable odorization nozzles have proven advantageous. Due to the pressure conditions in a gas line, in particular the relatively large difference between the pressure within the gas line and an ambient pressure outside the gas line, however, a change of the odorization nozzle is associated with great expense. One approach is, for example, to divert the gas temporarily to change the odorization nozzle via a bypass line, and to depressurize the part of the gas line in which the odorization nozzle is located. However, this can only be achieved via a relatively high outlay on equipment, which in turn leads to high costs and additional space requirements.

It is desirable to improve the function of an odorizing device, in particular with regard to the abovementioned disadvantages.

At this point, the invention, which is based on the object to provide an improved odorization. In particular, the interchangeability of the odorization is to be improved. In particular, a safe replacement of the odorization is to be made possible without having to take the gas line out of service.

The object is achieved on the one hand with an odorizing device according to claim 1. The invention is based on an odorizing device for odorizing a gas guided in a gas line. The odorizing device has a connecting piece for producing a gas-conducting connection with a gas line, an odorization inlet and an odorizing nozzle. The odorization port is configured to supply an odorant, and the odorant nozzle is configured to introduce the odorant into the gas line.

According to the invention, it is provided in the odorizing device that the odorizing device has an interchangeable lock with a lock chamber which can be connected to the connecting stub, the change lock having a lock valve which is arranged and designed to set a lock pressure in a lock section of the lock chamber.

The invention includes the recognition that a way to compensate for the pressure difference between line pressure and ambient pressure in the removal and the insertion of a Odorierungsdüse, the interchangeability of the Odorierungsdüse significantly improved, in particular simplified. A first control gas stream can be fed into or out of a lock-side chamber section of the lock chamber via a lock valve-that is to say in particular a valve which is arranged in a section of the lock chamber facing away from the gas line-in order to change the lock pressure. In this way, in particular, a controlled adjustment of the lock pressure to a compensation pressure and thus to the line pressure in the gas line is made possible to effect an axial movement of the odorization nozzle, in particular via a nozzle punch. Furthermore, compensation for the pressure difference and exchangeability of the odorization nozzle via the change-over lock can be made possible by means of such controlled adjustment.

According to a preferred embodiment, it is provided that the odorizing device has a gas shut-off valve, which is arranged and is configured to selectively open or block a fluid connection between the lock chamber and the gas line. Specifically, this may mean that a gas shut-off valve, for example in the form of a manually operable shut-off valve, is arranged between the connecting piece and the change-over lock of the odorizing device. In the open state, the gas shutoff valve releases a shut-off passage which connects the change-over lock to the connection piece and thus to the gas line in a gas-conducting manner and allows the odorization nozzle to pass through the gas shut-off valve into the gas line. In the closed state of the gas shut-off valve, the gas line is pressure-tightly separated from the exchange lock, so that, after a pressure equalization in the exchange lock, the odorization nozzle can be removed.

The odorizing device may have an additional lock valve. By way of the additional lock valve, analogue to the lock valve, an additional control gas flow can be introduced into or out of the lock section of the lock chamber in order to influence the lock pressure.

The odorizing device may have a compensation valve - that is to say in particular a valve which is arranged in a section of the lock chamber facing the gas line. By means of such a compensation valve, a second control gas stream can be fed into or out of a line section of the lock chamber in order to change the compensation pressure. In particular, by discharging the second control gas flow, a compensating pressure prevailing in the line section can be lowered from the level of the line pressure to the level of the ambient pressure. It is also possible to use the second control gas flow, in particular in addition to the first control gas flow, for the controlled generation of an axial movement of the odorization nozzle and the nozzle punch.

The odorizing device may include a nozzle punch disposed within the lock chamber and secured to the odorization nozzle, the nozzle punch having a gate side and a line side opposite the gate side. The lock side is that end face of the nozzle punch, which is remote from the line. The line side is corresponding to the opposite, the line facing end surface of the nozzle punch. By the nozzle stamp on its outer periphery pressure-sealed with the chamber wall of the lock chamber, can on both sides, i. On the lock side and on the line side of the nozzle punch, a different pressure can be set. This can be used to create an axial movement of the nozzle punch, and thus the odorization nozzle fixedly connected to the nozzle punch. For example, by increasing the lock pressure in the lock section of the lock chamber to a value higher than the balance pressure, the nozzle punch can be moved into the gas line along the major axis. To improve the pressure-tight closure, the nozzle punch may have on its outer peripheral surface one or more radial seals or similar seals.

The connecting piece can be cohesively, positively or non-positively connectable to produce a gas-conducting connection to the gas line pressure-tight. Preferably, the connecting piece is firmly bonded to the gas line by being welded to the outside of the pipe wall of the gas line. A preferred procedure for installing an odorizing device may include first welding the spud to the conduit wall in a condition that it does not yet have a spigot bore, and then attaching a gas shut-off valve to the spud. Subsequently, a tapping hole can be made via a tapping device, and after making the bore and removing the drill, the gas shut-off valve can be closed. Advantageously, the connecting piece and also the gas shut-off valve are compatible both with the tapping device and with the change-over lock and / or other parts of the odorizing device. This compatibility relates in particular to a common fastening system for a separable connection of the tapping device or the odorizing device, in particular by an identical positioning of the mounting screws and / or the fastening screws.

The lock chamber may have a hollow-cylindrical chamber section, which extends along a main axis, in particular normal to the gas line, and has a chamber diameter. Due to the hollow cylindrical design of the chamber portion, an axial movability of the nozzle punch and at the same time a pressure-tight closing of the nozzle punch with the chamber wall of the lock chamber are made possible. In this way, by adjusting a pressure differential between the lock pressure on one side of the nozzle punch and the balance pressure on the other side of the nozzle punch, axial movement of the nozzle punch within the chamber portion of the lock chamber can be created. In addition to the hollow-cylindrical chamber section, the lock chamber can have further, in particular in the axial direction adjacent sections, such as a step-shaped sleeve receptacle or one, for example conical or step-shaped, lower boundary of the lock chamber.

The nozzle punch may have a punch diameter that is equal to or less than the chamber diameter such that the nozzle punch is movable in axial movement along the major axis in the chamber portion along with the odor nozzle. By choosing the punch diameter as similar as possible to the size of the chamber diameter, a pressure-tight closure between the nozzle punch and the chamber wall is obtained. Here, a suitable compromise of sealing effect and mobility can be found. Axial movability can be achieved via one or more radial seals arranged on the outer circumference of the nozzle punch, and at the same time a sufficient sealing effect can be achieved.

The odorizing device may be designed such that the axial movement is caused by a lock pressure acting on a lock side of the nozzle punch and / or a compensation pressure acting on a line side of the nozzle punch. In this way, advantageously the axial movement BA - in consideration of the pressure differences in the gas line and in the environment - caused. In this case, by adjusting the lock pressure and / or the compensation pressure, depending on the axial position of the odorization, the axial movement can be generated in a controlled manner. This controlled generation of the axial movement can in particular be carried out manually - that is to say via a continuous visual inspection of the axial position of the odorization nozzle, connected to a manual actuation of the first and / or second lock valve. In particular, by applying the first control connection with nitrogen or another inert gas, the odorizing nozzle can be pushed into the gas line in an axial movement BA against the compensation pressure, which corresponds to the line pressure when the shut-off valve is open.

In addition, developments are also conceivable in which an automated generation of an axial movement takes place in an automated manner-for example, by an automatic activation of the first and / or second lock valve as a function of a measured axial position of the odorization nozzle.

The gas shut-off valve can be arranged between the connecting piece and the change-over lock. Such an arrangement allows the pressure-tight closing of the nozzle bore and thus the closing of the open through the connecting pipe gas line. This makes it possible, in the closed state of the Gasabsperrventils to change the Odorierungsdüse, and also to remove the entire exchange lock, for example, to repair or replace it with another device. The gas shut-off valve can be designed to be separable with both the connection piece and the change-over lock, or with both. These separable connections can be designed in particular as a screw connection. Advantageously, further devices compatible with the connecting piece and / or the gas shut-off valve, for example a tapping device, can be connected to the connecting piece and / or the gas shut-off valve.

To solve the problem, an odorization nozzle is proposed with a nozzle stamp. The odorization nozzle is movable in an exchange lock and is designed and arranged to be removed and inserted via the exchange lock. The nozzle stamp can be welded to the odorization nozzle and thus firmly connected to it. By means of the nozzle punch, the odorization nozzle can advantageously be moved within the change-over lock, in particular by deliberately changing the lock pressure. Also, the nozzle stamp establishes a pressure-tight, but movable separation between the lock section and the line section of the lock chamber and thus enables mobility of the odorization nozzle under pressure under pressure. The odorization nozzle can be removed, replaced and inserted through the exchange lock.

To solve the problem, an exchange lock with a lock chamber is proposed, which is designed for use in an odorizing device. The change-over lock has a lock valve which is arranged and designed to set a lock pressure in a lock section of the lock chamber. In the change-over lock, in particular through the lock valve in a controlled manner, a lock pressure can be adjusted to the line pressure in order to move the odorizing nozzle in the direction of the gas line. The exchange lock can also have a compensation valve. The compensation valve can be used to equalize the compensation pressure to the ambient pressure, in particular after the gas shut-off valve has been closed. Also, a controlled axial movement of the odorization nozzle can be caused via the lock valve and / or the compensation valve.

In a further development of the change-over lock, connectability to a connecting piece and / or to a gas shut-off valve is provided. This can be a possibility for the separable connection of the change-over lock to a connecting piece and / or to a gas shut-off valve include. Such connectivity can be formed via a bolted flange connection, screw connection or the like detachable positive connection. This results in a modular construction of the odorizing device and a usability of the odorizing device, in particular of individual components such as the connecting piece and / or the gas shut-off valve, for other devices, for example for a tapping device.

To achieve the object, a method for operating an odorizing device according to the invention is proposed which comprises introducing the odorizing agent via the odorization nozzle into a gas line.

• - Lösen der mechanischen Fixierung der Odorierungsdüse zum Bewegen der Odorierungsdüse (200) aus einer Fixierungsposition (SF) in eine Wechselposition (SW);
• - Schließen des Gasabsperrventils;
• - Kontrolliertes Angleichen des Ausgleichsdrucks auf das Niveau des Umgebungsdrucks; und
• - Entnehmen der Odorierungsdüse aus der Wechselschleuse. Durch diese Weiterbildung des Verfahrens kann eine Odorierungsdüse vorteilhaft entnommen werden, ohne die Gasleitung außer Betrieb nehmen und/oder drucklos schalten zu müssen.

In a development of the method it is provided that the method further comprises the steps:

• - releasing the mechanical fixing of the odorizing nozzle for moving the odorizing nozzle (200) from a fixing position (SF) to a change position (SW);
• - closing the gas shut-off valve;
• - Controlled adjustment of the compensation pressure to the level of the ambient pressure; and
• - Remove the odorization nozzle from the exchange lock. By means of this development of the method, an odorizing nozzle can advantageously be removed without having to take the gas line out of operation and / or having to switch it off without pressure.

• Hervorrufen einer axialen Bewegung über ein kontrolliertes Einstellen des ersten Steuer-Gasstroms und/oder des zweiten Steuer-Gasstroms, insbesondere zum Bewegen der Odorierungsdüse aus einer Fixierungsposition in eine Wechselposition.

In a development, the method may additionally or alternatively have the further step:

• Causing an axial movement via a controlled adjustment of the first control gas flow and / or the second control gas flow, in particular for moving the odorization nozzle from a fixing position to a change position.

• - Einsetzen einer Odorierungsdüse in die Wechselschleuse;
• - Öffnen des Gasabsperrventils;
• - Kontrolliertes Angleichen des Schleusendrucks auf das Niveau des Leitungsdrucks zum Bewegen der Odorierungsdüse aus einer Wechselposition in eine Fixierungsposition;
• - Befestigen der mechanischen Fixierung der Odorierungsdüse. Durch diese Weiterbildung des Verfahrens kann eine Odorierungsdüse vorteilhaft in die Odorierungsvorrichtung eingesetzt werden, ohne die Gasleitung außer Betrieb nehmen und/oder drucklos schalten zu müssen.

In a development, the method may additionally or alternatively comprise the steps:

• - Insertion of an odorization nozzle in the exchange lock;
• - opening the gas shut-off valve;
• - Controlled adjustment of the lock pressure to the level of line pressure for moving the odorization nozzle from a change position to a fixing position;
• - Attaching the mechanical fixation of the odorization nozzle. By means of this further development of the method, an odorizing nozzle can advantageously be used in the odorizing device without having to shut down the gas line and / or switch it off without pressure.

• - Hervorrufen einer axialen Bewegung über ein kontrolliertes Einstellen des ersten Steuer-Gasstroms und/oder des zweiten Steuer-Gasstroms.

In a development, the method may additionally or alternatively have the further step:

• Causing an axial movement via a controlled adjustment of the first control gas flow and / or the second control gas flow.

• 1 eine Ausgestaltung einer Odorierungsvorrichtung,
• 2 ein schematisches Ablaufdiagramm eines bevorzugten Verfahrens zum Betreiben einer Odorierungsvorrichtung.

Further advantages, features and details of the invention will become apparent from the following description of an embodiment and with reference to the drawing; this shows in:

• 1 an embodiment of an odorizing device,
• 2 a schematic flow diagram of a preferred method for operating an odorizing device.

1 shows an embodiment of an odorizing device 100 , The odorizing device 100 has a connection piece 110 over which the other parts of the odorization device 100 on a pipe 800 are attached. The present is the connecting piece 110 over a welded joint 111 with the line 800 connected. The connecting piece 110 is arranged and configured such that it has a gas-conducting connection between the gas line 800 and the - directly or indirectly with the connecting piece 110 connected - change lock 120 can produce. For this purpose, the connection piece 110 a nozzle hole BS on which coaxial with a major axis AH the odorizing device 100 is arranged and a bore diameter DB having. The bore diameter DB is equal to or greater than a nozzle diameter DD of an odorization nozzle 200 to a mobility of the odorization nozzle 200 through the nozzle hole BS to enable.

The odorizing device 100 further indicates a gas shut-off valve 114 on, which has a separable connection 160 , which in the present case as a screw connection 161 is formed on the connection piece 110 is attached. The gas shut-off valve 114 is present as a stopcock 115 educated. The gas shut-off valve 114 is formed, in the open state, a substantially hollow cylindrical, coaxial with the main axis AH arranged shut-off passage 114.1 release. The shut-off passage 114.1 has a pass diameter DP equal to or larger than a nozzle diameter DD of the odorization nozzle 200 is also an axial mobility of the odorization nozzle 200 through the shut-off passage 114.1 to enable. In the closed state of the gas stop valve 114 is the shut-off passage 114.1 closed pressure-tight. Consequently, in this closed state, the gas SG not over the connecting piece 110 escape.

To the gas shut-off valve 114 is pressure-tight an exchange lock 120 connected. The exchange lock 120 has a hollow cylindrical and coaxial with the major axis AH arranged lock chamber 122 with a chamber diameter DK on. The chamber diameter DK can be for example 28 mm. At the opposite end of the connecting piece 110 has the change lock 120 a sealing collar 126 which defines the radial clearance between the odorization nozzle 200 and a chamber wall 122.1 the lock chamber 122 pressure tight closes. In the present case, the change lock 120 a cuff recording 126.1 on, whose diameter is greater than the chamber diameter DK so that a radial step is created. Through the cuff holder 126.1 can the sealing cuff 126 taken and by means of a screwdriver 128 be fixed. Alternatively or additionally, the sealing sleeve 126 and / or the screwdriver 128 through the lock cover attached to the change lock 120 130 be fixed positively.

The lock cover 130 has a cover hole BD on which coaxial with the main axis AH is arranged and designed such that the odorization 200 through the cover hole BD can be passed. The lock cover 130 has a mechanical fixation 140 , in the form of a threaded connection, on.

At the outer, the exchange lock 120 facing away from the end of the lock cover 130 , shows the cover hole BD to a threaded section 132 on. The threaded section 132 is designed to receive a fastening screw 133 , The fixing screw 133 has a screw hole 133.1 which is coaxial with the major axis AH arranged and for receiving the odorization nozzle 133 is trained. The fixing screw 133 is formed, the odorization nozzle 200 to fix in an axial position, in particular by the fastening screw 133 by screwing into the threaded section 132 a radial clamping force on the odorization nozzle 200 applies. Also, in a preferred embodiment, the fastening screw 133 have an internal thread in the screw hole 133.1, which in a corresponding external thread on the Odorierungsdüse 200 intervenes. In this case, the attachment with a lock nut 134 , The internal thread also with an external thread of the odorization nozzle, not shown here 200 engages, be secured.

In the 1 illustrated axial spaces between both the connecting piece 110 and the gas shut-off valve 114 as well as between the gas shut-off valve 114 and the exchange lock 120 are closed in the mounted state of the odorization device 100 and is intended to illustrate only one possible, modular embodiment, in which the gas shut-off valve 114 as a separate component with both the connection piece 110 as well as the exchange lock 120 connected is. The same applies to the in 1 shown axial space between the exchange lock 120 and the lock lid 130 ,

The odorization nozzle 200 is with a nozzle stamp 112 firmly connected. The nozzle stamp 112 is inside the lock chamber 122 arranged and formed such that an outer peripheral surface 112.3 of the nozzle stamp 112 pressure-tight with the chamber wall 122.1 the lock chamber 122 closes - but at the same time the nozzle stamp 112 axially along the major axis AH is movable within the lock chamber. For such a pressure-tight completion of the nozzle punch 112 one or more radial seals 112.4 exhibit.

The nozzle stamp 112 thus divides the lock chamber in a line section 122.2 and a lock section 122.1 , The pipe section 122.2 is limited by that of the line 800 facing part of the lock chamber 122 and a pipe side 112.2 of the nozzle punch 112 , The lock section 122.1 is limited by the lock lid 130 facing part of the lock chamber 122 and one of the line side 112.2 opposite lock side 112.1 of the nozzle stamp 112 ,

The volumes of line section 122.2 and lock section 122.1 are thus changeable.

The exchange lock 120 has a lock valve 141.1 and a balance valve 142.1 on. Through the lock valve 141.1 may be a first control gas flow GS1 in the lock chamber 122 be in or out such that a lock pressure PS inside the lock section 122.1 can be adjusted.

Through the compensation valve 142.1 may be a second control gas flow GS2 in the lock chamber 122 be in or out such that a balancing pressure PA within the line section 122.2 can be adjusted.

By the purposeful actuation of the first lock valve 141.1 and the second lock valve 142.1 can the lock pressure PS and the balancing pressure PA be set with the goal that the nozzle stamp 112 together with the odorization nozzle 200 in an axial movement BA along the main axis AH emotional. Is via the second lock valve 142.1 and thus via the second control gas stream SG2 a balancing pressure PA set, which is greater than the lock pressure PS, so acts on the line side 112.2 of the nozzle stamp 112 a line-side punch force FL , which is larger than an opposite, on the lock side 112.1 of the nozzle stamp 112 acting, lock-side punch force FS , Consequently - provided that the odorization nozzle 200 is in a movable state - the nozzle stamp 112 together with the odorization nozzle 200 in the direction of the lock cover 130 emotional. Should be reversed, in particular by an outflowing second control gas stream SG2 a balancing pressure PA be set, which is lower than the lock pressure PS , consequently, the nozzle stamp becomes 112 together with the odorization nozzle 200 in the direction of the line 800 move.

Furthermore, the odorizing device 100 additionally or alternatively an additional control connection 143 with an additional control valve 143.1 exhibit. About this additional tax connection 143 can be an additional tax gas stream SG3 in the lock section 122.1 the lock chamber 122 in or out to be analogous to the first, lock side control port 141 the lock pressure PS inside the lock section 122.1 to influence. For this purpose, the additional control gas flow SG3 via the additional control valve 143.1 , a supply channel 143.2 and at least one feed slot 126.2 in the sealing collar 126 , flow into the lock section 122.1.

Analog can the axial movement BA also over the first lock valve 141.1 and thus the first control gas flow SG1 be controlled: By adjusting the lock pressure PS relative to the balancing pressure PA Namely, the balance of forces in the axial direction above and below the nozzle punch 112 influenced by analogy and thus the axial movement BA to be influenced.

Consequently - if the mechanical fixation 140 is solved - through the first and / or second gate valve 141.1 . 142.1 the odorization nozzle 200 from line 800 and the odorizing device 100 out and also in the odorization device 100 and in the line 800 be moved in. This allows the odorization nozzle 200 between a fixation position SF in which is a nozzle tip 204 and a metering section 202 the odorization nozzle 200 inside the gas line 800 and a change position SF in which is the odorization nozzle 200 completely outside the gas line 800 , and also outside the connection 110 and the gas shut-off valve 114 is moved back and forth.

During normal operation of the odorizing device 100 that is, when an odorizing agent SO passes through the metering section 202 the odorization nozzle 200 in the gas line 800 is introduced, is the odorization nozzle 200 in the fixation position SF , Via an odorization entrance 210 the odorant SO enters the interior of the odorization nozzle 200 and further over the metering section having a number of openings 202 to odorize the gas SG in the gas line 800. Not shown here and upstream odorierungseingang 210 arranged Odorierungsventil can the inflow of Odorierungsmittels SO and thus also the degree of odorization of the gas SG be selectively adjusted.

In the embodiment shown, the exchange lock 120 and the lock cover 130 over two mounting screws 131 on the gas shut-off valve 114 attached. The attachment is such that the fastening screws provide an axial holding force between the gas shut-off valve 114 and the lock lid 130 build and thereby the exchange lock 120 between the gas shut-off valve 114 and the lock lid 130 is held. Furthermore, the exchange lock 120 four lock through holes 136.1 to 136.4 through which the mounting screws 131 be guided to the interchange 120 additionally in the radial direction, ie perpendicular to the main axis AH , to fix.

The odorization nozzle 200 has a nozzle length LD extending from the nozzle tip 204 to the odorization entrance 210 extends. The nozzle length LD can be for example 715 mm. The odorizing device 100 - at least that of the connecting piece 110 to the lock lid 130 extending parts of the odorizing device 100 - have a device length LV on. The device length LV can be 406 mm, for example. The exchange lock 120 has a lock length LS and a lock diameter DW on. The lock length LS can be for example 316 mm. The lock diameter DW can be for example 45 mm.

Due to the modular distribution of connecting pieces 110 , Gas shut-off valve 114 and change lock 120 is achieved that more devices on the connecting piece 110 and / or the gas shut-off valve 114 can be connected. In particular, for producing a nozzle bore BS first a connecting piece 110 that does not have such a bore to the line 800 connected, in particular welded. Following this, can to the connecting piece 110 a gas shut-off valve 114 and again to the gas shut-off valve 114 a - not shown here and in particular also a lock functionality exhibiting - tapping device are attached to a drill with a nozzle bore BS along the main axis AH in the connecting piece 110 and a conduit wall 801 the gas line 800 to drill. After preparation of the nozzle bore BS and the removal of the drill, in particular via a lock of the tapping device, the gas shut-off valve 114 be closed and the exchange lock 120 together with the lock cover 130 and / or other parts of the odorizing device 100 be connected.

2 shows a schematic flow diagram of a preferred method for operating an odorizing device 100 , Not in 2 Reference numerals refer to the 1 ,

In a first step S1 is the odorization nozzle 200 operational. The gas shut-off valve 114 it is open; the balancing pressure PA thus corresponds to the line pressure PL , About the odorization entrance 210 An odorizing agent SO is supplied via the odorizing nozzle 200 in the gas line 800 is directed. Before replacing the odorization nozzle 200 the supply of the odorant SO is interrupted. For example, the supply of the odorant SO to the Odorierungseingang 210 be interrupted by closing an odorizing valve, not shown here.

In a second step S2, the mechanical fixation 140 Odorierungsdüse 200 by loosening the lock nut 134 and the fixing screw 133 solved. This can be achieved by a controlled release of the mechanical fixation 140 - And thus a controlled obtaining an axial residual holding force - a correspondingly controlled axial upward movement of the odorization nozzle 200 be generated. This is the odorization nozzle 200 through the on the line side 112.2 acting balancing pressure PA, with the gas shut-off valve open 114 the line pressure PL corresponds, from the gas line 800 in the direction of the change lock 120 in a change position SW emotional. Alternatively or additionally, to achieve controlled axial upward movement prior to opening the gas shut-off valve 114 the first control connection 141 be subjected to a pressure which is approximately equal to the compensation pressure PA equal or slightly lower. When the lock pressure PS equal to the balancing pressure PA is and thus - in the case that the lock side 112.1 and the line side 112.2 of the nozzle punch have an equal area - the line-side punch force FL amount equal to the lock-side punch force FS is, is the nozzle stamp 112 in a balance of power.

With reaching a change position SW the odorizing nozzle is completely out of the gas line 800 and also from the gas shut-off valve 114 moved out. Thus, the shut-off passage 114.1 released, leaving the gas shutoff valve 114 can be closed. With the closing of the gas shut-off valve 114 is the gas-conducting connection between the gas line 800 and the lock chamber 122 separated.

In a third step S3, a second control gas flow can now SG2 from the line section 122.2 the lock chamber 122 be guided. For this purpose, the compensation valve 141.2 is opened in the present case. so that the balancing pressure PA drops to a value close to the ambient pressure PU equivalent.

After completion of the equalization of the lock pressure PS and the balancing pressure PA prevails in the lock chamber 122 the ambient pressure PU , In a fourth step S4 now the lock cover 130 by loosening the mounting screws 131 solved and from the exchange lock 120 be removed. The screwdriver 128 can be unscrewed. Following this, the odorization nozzle 200 together with the nozzle stamp 112 and the sealing cuff 126 be removed from the exchange lock 120.

In a fifth step S5, the cleaned or repaired odorization nozzle can now be used 200 or a new odorization nozzle 200 , which also has a nozzle stamp 112 has, in the exchange lock 120 used, in particular screwed, be. A sealing cuff 126 can be done before fitting on the odorization nozzle 200 attached or after insertion on the odorization nozzle 200 put on and in the cuff holder 126.1 the change lock 120 be used. After insertion, the odorization nozzle is located 200 in the exchange position SW , Subsequently, the lock cover 130 on the exchange lock 120 put on and using the mounting screws 131 be attached.

In a sixth step S6, the gas shut-off valve 114 be opened, leaving the shut-off passage 114.1 is released and a gas-conducting connection between the lock chamber 122 and the gas line 800 is made. The compensation pressure PA thus increases from the level of the ambient pressure PU to the level of line pressure PL , It is advantageous to use the gas shut-off valve 114 in a controlled way, especially slow to open, to a pulse-like, uncontrolled gas penetration SG in the line section 122.2 the lock chamber 122 - And thus an uncontrolled pulse on the nozzle punch 112 and the odorization nozzle 200 - to avoid.

In a seventh step S7, an axial movement can be achieved by targeted adjustment of the first control gas flow SG1 BA the odorization nozzle 200 be caused so that the odorization 200 in the direction of the gas line 800 emotional. For this purpose, for example via a compressor, not shown here, a pressure bottle or the like pressure source of the first control gas stream SG1 through the opened lock valve 141.1 in the lock section 122.1 the change lock 122 passed, so that the lock pressure PS increases and becomes larger than the replacement pressure PA and thus also becomes larger than the line pressure PL , The first control gas stream SG1 may be a nitrogen stream or an inert gas stream. Illustrated by the first control gas flow SG1 the nozzle stamp 112 and thus also the odorization nozzle 200 against the line pressure PL in the gas line 800 pressed. Once the odorization nozzle 200 the fixation position SF has reached - this can for example by stopping the movement of the odorization 200 or a suitable, external, in particular outside the exchange lock 120 and the lock lid 130 lying mark on the odorization nozzle 200 be determined - is the axial movement BA by operating the first gate valve 141.1 and / or by adjusting the control gas flow SG1 , stopped. Alternatively or additionally, stopping the axial movement BA be effected by the nozzle punch 112 in the fixation position SF on a correspondingly arranged paragraph, in particular a step-like reduction of the chamber diameter DK rests, and thus the odorization nozzle 200 not further in the direction of the gas line 800 can move. Present - this is in 1 shown - is a lower limit 122.3 the lock chamber 122 However, conical, but also fulfills such a limiting function, by the axial movement of the nozzle punch 112 along the main axis AH in the direction of the gas line 800 limited.

In an eighth step S8 can now be the mechanical fixation 140 by placing and tightening the fixing screw 133 are actuated, so that the odorization nozzle 200 in the fixing position SF is held - and in particular regardless of the pressure conditions in the lock chamber 122 , By opening an odorizing valve, not shown, the supply of the odorant SG at the odorization entrance 210 be resumed and thus the gas SG to be odorized. Changing the odorization nozzle 200 is finished.

LIST OF REFERENCE NUMBERS

100

Odorierungsvorrichtung

110

spigot

111

welded joint

112

nozzles temple

112.1

Lock side of the nozzle stamp

112.2

Line side of the nozzle stamp

112.3

Outer peripheral surface of the nozzle punch

112.4

Radial seal of the nozzle stamp

114

gas shutoff valve

114.1

Absperrpassage

115

stopcock

118

terminal chamber

120

change lock

122

lock chamber

122.1

Lock section of the lock chamber

122.2

Line section of the lock chamber

122.3

Lower limit of the lock chamber

123

chamber wall

124

extraction valve

126

sealing sleeve

126.1

cuff recording

128

male connectors

130

lock cover

131

Mounting screw

132

threaded portion

133

fixing screw

134

locknut

136.1-4

First to fourth lock passage hole

140

Mechanical fixation

141

First, lock-side control connection

141.1

lock valve

142

Second, line-side control connection

142.1

equalization valve

143

Additional control port

143.1

Additional lock valve

143.2

feed channel

160

Separable connection

161

screw

190

connecting element

191

tapping device

200

Odorierungsdüse

202

metering

204

nozzle tip

208

Interior of the odorization nozzle

210

Odorierungseingang

800

gas pipe

801

Conduit wall of the gas line

A

Outside of the odorizing device

AH

main axis

AK

chamber section

BA

axial movement

BD

cover bore

BS

union bore

DB

Bore diameter

DK

Chamber diameter

DP

Passages diameter

DS

Punch diameter

DW

Sluice diameter

FL

Line-side punch force

FS

Lock side punch force

LD

nozzle length

LS

Unit length

LV

device length

PA

balancing pressure

PL

line pressure

PS

lock pressure

PU

ambient pressure

SD

Axial position of the odorization nozzle

SF

fixation position

SG

Gas, gas to be odorized

SG1

First control gas flow

SG2

Second control gas flow

SG3

Additional control gas flow

SW

change position

U

Surroundings

Claims (13)

An odorizing device (100) for odorizing a gas (SG) guided in a gas line (800), comprising: - a connecting piece (110) for establishing a gas-conducting connection with a gas line (800), - an odorizing inlet (210) designed for feeding an odorizing agent (SO) and an odorizing nozzle (200) designed to introduce the odorizing agent (SO) into the gas line (800), characterized in that - the odorizing device (100) has a change-over lock (120) connectable to the connecting piece (110) with a lock chamber (122), wherein - the change lock (120) has a lock-side lock valve (141.1) which is arranged and configured to adjust a lock pressure (PS) in a lock section (122.1) of the lock chamber (122). Odorierungsvorrichtung (100) according to Claim 1 characterized in that the odorizing device (100) includes a gas shut-off valve (114) arranged and adapted to selectively open or block fluid communication between the lock chamber (122) and the gas line (800). Odorierungsvorrichtung (100) according to at least one of the preceding claims, characterized in that the odorization device (100) comprises a compensation valve (142.1). Odorierungsvorrichtung (100) according to at least one of the preceding claims, characterized in that the odorization device (100) has an additional lock valve (143.1). An odorizing device (100) according to at least one of the preceding claims, characterized in that the odorizing device (100) has a nozzle punch (112) which is arranged inside the lock chamber (122) and attached to the odorizing nozzle (200), the nozzle punch (112 ) has a lock side (112.1) and a line side (112.2) opposite the lock side (112.1). Odorierungsvorrichtung (100) according to at least one of the preceding claims, characterized in that the connecting piece (110) cohesively, positively or non-positively to Producing a gas-conducting connection with the gas line (800) pressure-tight connectable. Odorierungsvorrichtung (100) according to at least one of the preceding claims, characterized in that the lock chamber (122) has a hollow cylindrical chamber portion (AK) which extends along a major axis (AH) and has a chamber diameter (DK). Odorierungsvorrichtung (100) according to Claim 7 characterized in that the nozzle punch (112) has a punch diameter (DS) equal to or less than the chamber diameter (DK), such that the die punch (112) with the odorization nozzle (200) along the major axis (AH) in the chamber portion (AK) in an axial movement (BA) is movable, wherein the axial movement (BA) of one on a lock side (112.1) of the nozzle punch (112) acting on the lock pressure (PS) and / or on a line side (112.2) of the nozzle punch (112 ) acting compensating pressure (PA) is caused. Odorierungsvorrichtung (100) according to at least one of the preceding claims, characterized in that the gas shut-off valve (114) between the connecting piece (110) and the change-over lock (120) is arranged. Odorierungsvorrichtung (100) according to at least one of the preceding claims, characterized in that the change-over lock (120) via a separable connection (160) with the connecting piece (110) and / or the Gasabsperrventil (114) is connected. Odorization nozzle (200) for an odorizing device (100) according to at least one of the preceding claims, with a nozzle punch (112), wherein the odorization nozzle (200) is movable in an exchange lock (120) and is constructed and arranged via the change lock (120) to be removed and used. Change lock (120) for an odorization device (100) according to at least one of the preceding Claims 1 to 11 with a lock chamber (122), with a lock valve (141.1) which is arranged and designed to set a lock pressure (PS) in a lock section (122.1) of the lock chamber (122). Change lock (120) after Claim 12 , characterized by a connectability to a connecting piece (110) and / or to a gas shut-off valve (114).

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