Smoke exhaust device for oil tank of steam turbine

Abstract

The utility model discloses a steam turbine oil tank smoke exhaust device which comprises an oil tank, a plurality of smoke exhaust fans and a valve device, each smoke exhaust fan is respectively communicated with the oil tank, and each smoke exhaust fan is respectively provided with a smoke exhaust port. The valve device comprises an air interface and a plurality of communication interfaces, and a smoke exhaust port of each smoke exhaust fan is communicated with one communication interface; and when the smoke exhaust ports of one or more smoke exhaust fans are communicated with the air interface, the communication interfaces communicated with the other smoke exhaust fans are closed, so that the smoke exhaust ports of the other smoke exhaust fans are disconnected from the air interface and the other communication interfaces. The smoke exhaust device for the steam turbine oil tank can well solve the technical problem that two or more smoke exhaust fans of a steam turbine have to be started at the same time in the practical application process, so that the rest smoke exhaust fans can be stopped, the technical effect of energy conservation is achieved, and the energy consumption of the steam turbine is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of steam turbines, in particular to a smoke exhaust device for a steam turbine oil tank. Background Art

[0002] The turbine oil in the oil supply system of the steam turbine (hereinafter referred to as the large machine) is heated and decomposed into oil smoke and oil gas during operation due to the friction power consumption of the bearings and the blasting effect of the rotating parts; at the same time, due to the leakage of some water vapor into the box body from the oil retaining ring of the bearing seat, the turbine oil contains non-condensable gases such as water. If these gases are not eliminated, they will gradually accumulate in the oil tank of the large machine, causing the pressure in the oil tank of the large machine to gradually increase (the oil tank of the large machine is in a negative pressure state during normal operation), so that the oil return of the large machine bearing cannot smoothly return to the oil tank, which in turn causes the lubricating oil to spray from the bearing, resulting in oil leakage from the large machine.

[0003] This problem has not been solved in the prior art. Generally, two smoke exhaust fans are set up for smoke exhaust, one for smoke exhaust and the other for standby. However, when the smoke exhaust device (smoke exhaust fan) of the large machine lubricating oil system is running alone, the smoke and other non-condensable gases extracted are easy to flow back into the oil tank from the outlet of the other standby smoke exhaust fan, causing the standby smoke exhaust fan to reverse. This not only greatly weakens the degree of smoke exhaust, but may also affect the oil return effect of the large machine bearings over time. In addition, due to the reverse rotation of the standby smoke exhaust fan, when the operating fan trips and is linked, the starting torque is too large, which can easily damage the equipment. Therefore, usually two smoke exhaust fans are running at the same time, and there is no standby smoke exhaust fan, which greatly increases the energy consumption of the large machine.

[0004] In addition, the large machine lubricating oil system has the problem of unreliable oil level gauge, which can easily lead to the oil level not being able to truly reflect when the system is leaking oil, affecting the judgment of the operating personnel, and the pressure in the large machine oil tank cannot be known to the operating personnel. Utility Model Content

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a steam turbine oil tank smoke exhaust device, which can well solve the technical problem that two or more exhaust fans of the steam turbine have to be started at the same time during actual application, so that the remaining exhaust fans can be shut down, thereby achieving the technical effect of energy saving and greatly reducing the energy consumption of the steam turbine.

[0006] According to the embodiment of the utility model, the steam turbine oil tank smoke exhaust device includes an oil tank, a smoke exhaust fan and a valve device, wherein a plurality of smoke exhaust fans are provided, each of the smoke exhaust fans is respectively connected to the oil tank and each of the smoke exhaust fans is respectively provided with a smoke exhaust port; the valve device includes an air interface and a plurality of connecting interfaces, and the smoke exhaust port of each of the smoke exhaust fans is respectively connected to one of the connecting interfaces; when the smoke exhaust ports of one or more of the smoke exhaust fans are connected to the air interface, the connecting interfaces connected to the remaining smoke exhaust fans are closed so that the smoke exhaust ports of the remaining smoke exhaust fans are disconnected from the air interface and the other connecting interfaces.

[0007] According to the steam turbine oil tank smoke exhaust device of the embodiment of the utility model, by such an arrangement, at least the following beneficial effects can be achieved: by setting the valve device, the steam turbine can control the number of smoke exhaust fans connected to the air interface, so that when one or more smoke exhaust fans are running, the remaining smoke exhaust fans can be stopped instead of having to be started at the same time, thereby achieving the technical effect of energy saving and greatly reducing the energy consumption of the steam turbine.

[0008] According to some embodiments of the utility model, a sealing baffle is provided in each of the connecting interfaces, and when the smoke exhaust ports of one or more of the smoke exhaust fans are connected to the air interface, the sealing baffles in the remaining connecting interfaces close their respective connecting interfaces so that the smoke exhaust ports of the remaining smoke exhaust fans are disconnected from the air interface and from the other connecting interfaces.

[0009] According to some embodiments of the present utility model, each of the sealing baffles is respectively provided with a rotating rod, and the sealing baffle is rotated by the rotating rod to open or close the communication interface.

[0010] According to some embodiments of the utility model, an on-site oil level gauge is further included. The on-site oil level gauge is arranged outside the oil tank and is connected to the oil tank, and is used to display the oil level in the oil tank.

[0011] According to some embodiments of the present utility model, the on-site oil level gauge is transparent.

[0012] According to some embodiments of the present invention, an oil level transmitter is also included. The oil level transmitter is connected to the oil tank and is used to display the oil level in the oil tank.

[0013] According to some embodiments of the present utility model, a plurality of oil level transmitters are provided.

[0014] According to some embodiments of the utility model, an oil level alarm is further included. The oil level alarm is electrically connected to the oil level transmitter. When the oil level transmitter detects that the oil level in the oil tank is too low, the oil level alarm sends out an alarm.

[0015] According to some embodiments of the present invention, a pressure transmitter is further included, and the pressure transmitter is connected to the oil tank and is used to display the pressure in the oil tank.

[0016] According to some embodiments of the utility model, a pressure alarm is further included. The pressure alarm is electrically connected to the pressure transmitter. When the pressure transmitter detects that the pressure in the oil tank is too high, the pressure alarm sends out an alarm.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 The utility model is a schematic diagram of the overall structure of the steam turbine oil tank smoke exhaust device according to the embodiment of the utility model.

[0020] Reference numerals:

[0021] Oil tank 1, pressure transmitter 2, smoke exhaust fan 3, smoke exhaust port 4, valve device 5, local oil level gauge 6, oil level transmitter 7. DETAILED DESCRIPTION

[0022] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0023] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0024] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0025] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0026] Reference below Figure 1 To describe the steam turbine oil tank smoke exhaust device according to an embodiment of the utility model.

[0027] According to the embodiment of the utility model, the steam turbine oil tank smoke exhaust device includes an oil tank 1, a smoke exhaust fan 3 and a valve device 5, a plurality of smoke exhaust fans 3 are provided, each of the smoke exhaust fans 3 is respectively connected to the oil tank 1 and each of the smoke exhaust fans 3 is respectively provided with a smoke exhaust port 4; the valve device 5 includes an air interface and a plurality of connecting interfaces, and the smoke exhaust port 4 of each smoke exhaust fan 3 is respectively connected to a connecting interface; when the smoke exhaust port 4 of one or more smoke exhaust fans 3 is connected to the air interface, the connecting interface connected to the remaining smoke exhaust fans 3 is closed so that the smoke exhaust ports 4 of the remaining smoke exhaust fans 3 are disconnected from the air interface and the other connecting interfaces.

[0028] For example Figure 1 The embodiment shown, Figure 1 In the illustrated embodiment, two smoke exhaust fans 3 are provided, the two smoke exhaust fans 3 are respectively connected to the oil tank 1 , and each smoke exhaust fan 3 is provided with a smoke exhaust port 4 . Figure 1 The valve device 5 shown is a three-way valve, including two connecting interfaces and one air interface. The two connecting interfaces are respectively connected to the exhaust ports 4 of the two smoke exhaust fans 3. When the exhaust port 4 of one smoke exhaust fan 3 is connected to the air interface, the connecting interface connected to the exhaust port 4 of the other smoke exhaust fan 3 is closed, so that the exhaust port 4 of the smoke exhaust fan 3 is disconnected from the air interface and the other connecting interface, ensuring that only the exhaust port 4 of the first smoke exhaust fan 3 is connected to the air interface. At this time, the smoke exhaust fan 3 connected to the air interface can work normally, and the other smoke exhaust fan 3 can be reserved for standby, so that the other smoke exhaust fan 3 does not need to be started, and the started smoke exhaust fan 3 will not re-enter the oil tank 1 from the standby smoke exhaust fan 3, thereby saving electric energy.

[0029] When the smoke exhaust fan 3 is working, the connecting interface connected to the smoke exhaust fan 3 is opened, so that the smoke exhaust fan 3 can discharge the oil smoke in the oil tank 1 through the smoke exhaust port 4, the connecting interface, and the air interface in sequence, while the connecting interface connected to the non-working smoke exhaust fan 3 is closed, so that the oil smoke exhausted by the working smoke exhaust fan 3 will not re-enter the interior of the oil tank 1 through the smoke exhaust port 4.

[0030] When all the smoke exhaust fans 3 stop working, all the connecting interfaces are closed to prevent external dust from entering the oil tank 1. That is, only when the smoke exhaust fans 3 are working, the connecting interfaces connected to the smoke exhaust fans 3 will be opened, and the connecting interfaces of all the smoke exhaust fans 3 that are not working are closed, which can prevent oil smoke and external dust from entering the oil tank.

[0031] The main components of the oil fume discharged from the steam turbine are aldehydes, ketones, hydrocarbons, fatty acids, alcohols, aromatic compounds, ketones, lactones, heterocyclic compounds, etc. Acrolein in the oil fume is discharged into the atmosphere, which will cause strong irritation to the mucous membranes of the eyes, nose and throat, and may cause chronic keratitis, rhinitis, pharyngitis, tracheitis and other diseases; the toxic substance benzopyrene in the steam turbine oil fume will cause lesions in human tissues. If exposed for a long time, the incidence of lung lesions will increase by 2-3 times; the fat oxides in the oil fume are likely to cause cardiovascular and cerebrovascular diseases in the middle-aged and elderly, so a filter layer can be set at the air interface of the valve device 5 to perform filtering operations to reduce harm to workers and the environment.

[0032] The filter layer can be set up with two layers, one molecular sieve filter layer and one Ye Guangni filter layer. First, it is adsorbed through the molecular sieve filter layer, preferably ZSM-5 molecular sieve, because it has a large specific surface area and a higher adsorption capacity, and has a good adsorption effect on oil fume polar compounds; then it is adsorbed through the Ye Guangni filter layer, which is a material that can adsorb, lock and decompose harmful substances. The spatial network structure of Ye Guangni can decompose harmful gas molecules such as formaldehyde in the material, and the double helix nano factors inside can decompose the formaldehyde molecules locked inside, which has the function of locking and decomposing formaldehyde, thereby achieving the purpose of decomposing aldehyde poisonous substances in turbine oil exhaust. The exhaust gas adsorbed by the molecular sieve filter layer and decomposed by the Ye Guangni filter layer is then detected by the oil fume detector. If the effective hourly emission mean of pollutants in the exhaust gas is less than the upper limit of the detector, the detector will not alarm and it can be discharged normally; if it is greater than the upper limit of the detector, the detector will automatically alarm, and then it is necessary to replace the filter layer and the Ye Guangni filter layer.

[0033] remove Figure 1In addition to the embodiment in which two smoke exhaust fans 3 are provided, the smoke exhaust fans 3 can also be provided with three, four or five, etc., and are not limited to two. When at least one smoke exhaust fan 3 is connected to the air interface, the connecting interface connected to the smoke outlet 4 of the remaining smoke exhaust fans 3 is closed, so that the remaining smoke exhaust fans 3 are not connected to the air interface, so that the smoke exhaust fans 3 connected to the air interface will not enter the remaining smoke exhaust fans 3 when exhausting oil smoke into the air, and will not cause the oil smoke to be re-inhaled into the oil tank 1, making the steam turbine safer, and the remaining smoke exhaust fans 3 do not need to be turned on. The number of smoke exhaust fans 3 connected to the air interface can be selected according to actual needs, and the operation is more flexible.

[0034] An oil smoke detector can also be set at the air interface of the valve device 3, and the oil smoke detector is electrically connected to the control system of the smoke exhaust fan 3. The oil smoke detector is used to detect the concentration of the oil smoke discharged into the air. When the oil smoke detector detects that the concentration of the discharged oil smoke is too high, it means that there is too much oil smoke generated in the oil tank 1 at this time. At this time, the control system can control to increase the number of working smoke exhaust fans 3 to increase the smoke exhaust strength. When the oil smoke detector detects that the concentration of the discharged oil smoke is reduced, it means that the oil smoke discharged from the oil tank 1 is less at this time. At this time, the control system can reduce the number of working smoke exhaust fans 3 and reduce the smoke exhaust strength. Through the setting of the oil smoke detector, the control system can automatically control the number of working smoke exhaust fans 3, realize smoke exhaust more economically, and save electricity.

[0035] In some specific embodiments of the utility model, a sealing baffle is provided in each connecting interface. When the smoke exhaust port 4 of one or more smoke exhaust fans 3 is connected to the air interface, the sealing baffles in the remaining connecting interfaces close their respective connecting interfaces so that the smoke exhaust ports 4 of the remaining smoke exhaust fans 3 are disconnected from the air interface and from other connecting interfaces.

[0036] The shape of the sealing baffle is adapted to the shape of the connecting interface, so that the sealing baffle can completely seal the connecting interface, preventing the activated smoke exhaust fan 3 from re-discharging the exhaust fumes through the connecting interface from the smoke exhaust port 4 of the standby smoke exhaust fan 3 into the oil tank 1. The sealing baffle can open or close the connecting interface in a variety of ways, such as providing a sliding groove penetrating the side wall of the valve device 5 near the connecting interface, inserting the sealing baffle into the sliding groove, so that the air outlet direction of the sealing baffle and the connecting interface of the valve device 5 is set at a 90° angle, so that the side of the sealing baffle faces the air outlet direction of the smoke exhaust port 4, so that the sealing baffle can slide in the sliding groove to open or close the connecting interface, and the amplitude of the opening or closing of the connecting interface can be adjusted by the amplitude of the sliding.

[0037] The sealing baffle can also be rotatably arranged in the communication interface, and the communication interface can be opened or closed by rotating the sealing baffle, and the opening or closing amplitude of the communication interface can be adjusted by the rotation angle of the sealing baffle.

[0038] The movement of the sealing baffle can be automatically controlled by a pneumatic device. The pressure measuring tube of the valve device 5 is connected to the differential pressure transmitter built into the valve device 5. The signal is sent through the differential pressure transmitter, and then the differential pressure transmitter signal is read into the control box of the valve device 5 through the signal collector, so that the movement or rotation of the sealing baffle is controlled pneumatically through the control box.

[0039] By setting the sealing baffle, the connection interface can be opened or closed, so that the smoke outlet 4 of the smoke exhaust fan 3 can be connected or disconnected with the air interface, so that each smoke exhaust fan 3 can be controlled to be connected or disconnected with the air, so that the operator can control the number of smoke exhaust fans 3 opened or closed, and the operation is more flexible. The oil smoke exhausted by the running smoke exhaust fan 3 will not re-enter the oil tank 1 through the other smoke exhaust fans 3, making the steam turbine safer.

[0040] In some specific embodiments of the present utility model, a rotating rod is respectively provided on each sealing baffle, and the sealing baffle is rotated by the rotating rod to open or close the communication interface.

[0041] The rotating rod is connected to the pneumatic device, and the pneumatic device is used to control the rotation of the rotating rod, thereby driving the rotation of the sealing baffle. The control system gives a pressure difference signal to the valve device 5, so that the pneumatic device of the valve device 5 obtains the pressure difference signal to drive the rotating rod to rotate, thereby realizing the movement of the sealing baffle.

[0042] By setting the rotating rod, the sealing baffle can be rotated to open or close the connecting interface, so that the smoke exhaust port 4 of the smoke exhaust fan 3 can be connected or disconnected with the air or other smoke exhaust ports 4 of the smoke exhaust fan 3, and the opening amplitude of the connecting interface can be adjusted by the rotation angle of the sealing baffle.

[0043] In some specific embodiments of the utility model, an on-site oil level gauge 6 is also included. The on-site oil level gauge 6 is arranged outside the oil tank 1 and is connected to the oil tank 1 for displaying the oil level in the oil tank 1 .

[0044] For example Figure 1As shown, the local oil level gauge 6 is arranged with a connecting pipe, so that the oil level of the local oil level gauge 6 is consistent with the oil level in the oil tank 1, and the local oil level gauge 6 is arranged outside the oil tank 1, so that the operator can know the amount of oil in the oil tank 1 from the outside through the local oil level gauge 6, without opening the oil tank 1 to observe the oil level in the oil tank 1, which makes observation more convenient and easy, and the visual conditions are better, so that the operator can accurately grasp the oil level in the oil tank 1.

[0045] In some specific embodiments of the present invention, the local oil level gauge 6 is transparent.

[0046] The local oil level gauge 6 is changed to a transparent setting, which is convenient for local patrol personnel to monitor the changes in the oil level, so that the operating personnel can observe the oil level in the oil tank 1 more clearly, and the visual conditions are better.

[0047] In some specific embodiments of the present utility model, an oil level transmitter 7 is also included. The oil level transmitter 7 is connected to the oil tank 1 and is used to display the oil level in the oil tank 1.

[0048] For example Figure 1 As shown, an oil level transmitter 7 is provided in the oil tank 1, through which the oil level in the oil tank 1 can be detected in real time and transmitted to the operator, so that the operator can know the oil level in the oil tank 1 in real time. In some embodiments, the oil level transmitter 7 and the local oil level gauge 6 can be provided at the same time, so that the operator can check whether the oil level transmitter 7 has any fault by comparing the reading of the local oil level gauge 1 with the reading of the oil level transmitter 7.

[0049] In some specific embodiments of the present invention, a plurality of oil level transmitters 7 are provided.

[0050] For example Figure 1 As shown, there are three oil level transmitters 7. If the parameters of one of the oil level transmitters 7 are too different from the parameters of the other two oil level transmitters 7, the operator can exclude the parameters of this oil level transmitter 7 and take the average value of the parameters of the other two oil level transmitters, so that the operator can obtain more accurate oil level data.

[0051] In some specific embodiments of the present invention, an oil level alarm is also included. The oil level alarm is electrically connected to the oil level transmitter 7. When the oil level transmitter 7 detects that the oil level in the oil tank 1 is too low, the oil level alarm sounds an alarm.

[0052] By setting the oil level alarm, when the oil level in the oil tank 1 is too low, the oil level alarm will sound an alarm to remind the operator to pay attention to refueling.

[0053] In some specific embodiments of the present invention, a pressure transmitter 2 is further included. The pressure transmitter 2 is connected to the oil tank 1 and is used to display the pressure in the oil tank 1 .

[0054] For example Figure 1 As shown, through the pressure transmitter 2, the operator can observe the pressure in the oil tank 1 in real time. The change of this pressure can indirectly reflect the oil return condition of the large machine lubricating oil and the output of the smoke exhaust fan 3, which is convenient for the operator to know the pressure value in the oil tank 1 to avoid the lubricating oil spraying from the bearing, resulting in oil leakage of the turbine.

[0055] In some specific embodiments of the present utility model, a pressure alarm is also included. The pressure alarm is electrically connected to the pressure transmitter 2. When the pressure transmitter 2 detects that the pressure in the oil tank 1 is too high, the pressure alarm sounds an alarm.

[0056] By setting a pressure alarm, the pressure alarm can sound an alarm when the pressure in the oil tank 1 is too high, reminding the operator to pay attention and check the risks in time to avoid the lubricating oil spraying from the bearing, which may cause oil leakage in the turbine.

[0057] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0058] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A steam turbine oil tank smoke exhaust device, characterized in that: include: Fuel tank (1); A smoke exhaust fan (3), wherein a plurality of the smoke exhaust fans (3) are provided, each of the smoke exhaust fans (3) is respectively connected to the oil tank (1) and each of the smoke exhaust fans (3) is respectively provided with a smoke exhaust port (4); A valve device (5), wherein the valve device (5) comprises an air interface and a plurality of connecting interfaces, wherein the smoke exhaust port (4) of each of the smoke exhaust fans (3) is respectively connected to one of the connecting interfaces; when the smoke exhaust port (4) of one or more of the smoke exhaust fans (3) is connected to the air interface, the connecting interface connected to the remaining smoke exhaust fans (3) is closed so that the smoke exhaust port (4) of the remaining smoke exhaust fans (3) is disconnected from the air interface and the other connecting interfaces.

2. The steam turbine oil tank smoke exhaust device according to claim 1, characterized in that: A sealing baffle is provided in each of the connecting interfaces. When the smoke exhaust ports (4) of one or more of the smoke exhaust fans (3) are connected to the air interface, the sealing baffles in the remaining connecting interfaces close their respective connecting interfaces so that the smoke exhaust ports (4) of the remaining smoke exhaust fans (3) are disconnected from the air interface and from the other connecting interfaces.

3. The smoke exhaust device for the steam turbine oil tank according to claim 2, characterized in that: A rotating rod is respectively arranged on each of the sealing baffles, and the sealing baffle is rotated by the rotating rod to open or close the communication interface.

4. The steam turbine oil tank smoke exhaust device according to claim 1, characterized in that: It also includes an on-site oil level gauge (6), which is arranged outside the oil tank (1) and is connected to the oil tank (1) and is used to display the oil level in the oil tank (1).

5. The smoke exhaust device for the steam turbine oil tank according to claim 4, characterized in that: The local oil level gauge (6) is transparent.

6. The smoke exhaust device for the steam turbine oil tank according to claim 1, characterized in that: It also includes an oil level transmitter (7), which is connected to the oil tank (1) and is used to display the oil level in the oil tank (1).

7. The smoke exhaust device for the steam turbine oil tank according to claim 6, characterized in that: The oil level transmitter (7) is provided in plurality.

8. The smoke exhaust device for the steam turbine oil tank according to claim 6, characterized in that: It also includes an oil level alarm, which is electrically connected to the oil level transmitter (7). When the oil level transmitter (7) detects that the oil level in the oil tank (1) is too low, the oil level alarm sounds an alarm.

9. The smoke exhaust device for a steam turbine oil tank according to claim 1, characterized in that: It also includes a pressure transmitter (2), which is connected to the oil tank (1) and is used to display the pressure in the oil tank (1).

10. The steam turbine oil tank smoke exhaust device according to claim 9, characterized in that: It also includes a pressure alarm, which is electrically connected to the pressure transmitter (2). When the pressure transmitter (2) detects that the pressure in the oil tank (1) is too high, the pressure alarm will sound an alarm.

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