CN219387971U - Steam turbine electromagnetic protection device with redundancy protection function - Google Patents
Steam turbine electromagnetic protection device with redundancy protection function Download PDFInfo
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- CN219387971U CN219387971U CN202321071269.XU CN202321071269U CN219387971U CN 219387971 U CN219387971 U CN 219387971U CN 202321071269 U CN202321071269 U CN 202321071269U CN 219387971 U CN219387971 U CN 219387971U
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Abstract
The utility model discloses an electromagnetic protection device of a steam turbine with a redundancy protection function, wherein a first electromagnetic valve and a second electromagnetic valve are arranged at an actuating mechanism of the steam turbine, when only the second electromagnetic valve is communicated with compressed air, the first electromagnetic valve and the second electromagnetic valve form a series structure, so that when one electromagnetic valve receives a shutdown instruction, the actuating mechanism is automatically closed, when both the first electromagnetic valve and the second electromagnetic valve are communicated with the compressed air, the first electromagnetic valve and the second electromagnetic valve form a parallel structure, so that only when the two electromagnetic valves receive the shutdown instruction at the same time, the actuating mechanism is automatically closed, the two electromagnetic valves are mutually redundant, and the two electromagnetic valves are in a charged state in normal operation. Through the pipeline connection mode of changing the gas circuit of the device, can realize that 2 get 1 or 2 get 2 interlock shut down function, can effectively reduce the mistake shut down, ensure that production is stable.
Description
Technical Field
The utility model relates to the technical field of steam turbines, in particular to a steam turbine electromagnetic protection device with a redundancy protection function.
Background
The steam turbine is used as a driving device and is often applied to the key fields of petrifaction, electric power and the like. When an abnormal state of the device occurs, a series of dangerous situations may be raised if proper safety measures are absent. In general, a steam turbine is provided with various monitoring instruments during operation, and when the instruments monitor dangerous signals, shutdown instructions of the steam turbine can be sent out, so that an electronic signal is related to the shutdown actions of the steam turbine through designing a linkage protection device, and the shutdown of the steam turbine is automatically and quickly initiated after the shutdown instructions are received.
Disclosure of Invention
The utility model aims to provide the electromagnetic protection device with the redundant protection function for the steam turbine, which has the advantages of simple structure, convenient installation and reliable performance, so as to realize the function of rapidly triggering the shutdown of the steam turbine after receiving signals.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the utility model provides a take redundant protect function's steam turbine electromagnetic protection device, includes support, first solenoid valve, second solenoid valve and actuating mechanism, first solenoid valve with the second solenoid valve interval is located on the support, first solenoid valve has first valve port, second valve port and third valve mouth, the second solenoid valve has fourth valve port, fifth valve port and sixth valve port, first valve port of first solenoid valve with actuating mechanism intercommunication, the second valve port of first solenoid valve or third valve port with the fourth valve port of second solenoid valve intercommunication, first solenoid valve with at least one valve port and compressed air intercommunication.
Further, the second valve port or the third valve port of the first electromagnetic valve is communicated with the fourth valve port of the second electromagnetic valve through a first pipeline, and the first valve port of the first electromagnetic valve is communicated with the executing mechanism through a second pipeline.
Further, the third valve port of the first electromagnetic valve is communicated with the fourth valve port of the second electromagnetic valve, the sixth valve port of the second electromagnetic valve is communicated with compressed air, and the second valve port of the first electromagnetic valve and the fifth valve port of the second electromagnetic valve are externally connected with atmospheric pressure.
Further, the second valve port of the first electromagnetic valve is communicated with the fourth valve port of the second electromagnetic valve, the third valve port of the first electromagnetic valve is communicated with compressed air, the sixth valve port of the second electromagnetic valve is communicated with compressed air, and the fifth valve port of the second electromagnetic valve is externally connected with atmospheric pressure.
Further, the device also comprises a switch mechanism, wherein the switch mechanism is connected with the actuating mechanism and used for providing a driving force for closing the actuating mechanism.
Further, the switch mechanism comprises a pull rod, a tension spring and a rotating arm, wherein the first end of the pull rod is connected to the support, the second end of the pull rod is connected to one end of the tension spring, the other end of the tension spring is connected with the rotating arm, and the first electromagnetic valve, the second electromagnetic valve and the tension spring are controlled to switch under the combined action of the first electromagnetic valve, the second electromagnetic valve and the tension spring.
The utility model provides a steam turbine electromagnetic protection device with a redundancy protection function, wherein a first electromagnetic valve and a second electromagnetic valve are arranged at an actuating mechanism of a steam turbine, the first electromagnetic valve and the second electromagnetic valve are two-position three-way valves, a first valve port of the first electromagnetic valve is communicated with the actuating mechanism, a second valve port or a third valve port of the first electromagnetic valve is communicated with a fourth valve port of the second electromagnetic valve to be communicated with two electromagnetic valves, at least one valve port of the first electromagnetic valve and at least one valve port of the second electromagnetic valve are communicated with compressed air, when only the second electromagnetic valve is communicated with the compressed air and the third valve port of the first electromagnetic valve is communicated with the fourth valve port of the second electromagnetic valve, the first electromagnetic valve and the second electromagnetic valve form a series structure, when any one of the first electromagnetic valve and the second electromagnetic valve receives a shutdown command, the first electromagnetic valve and the second electromagnetic valve are communicated with the compressed air, and the first electromagnetic valve and the second electromagnetic valve at the moment form a parallel structure, and when the two electromagnetic valves receive a shutdown command at the same time, the two electromagnetic valves are in a normally-closed state and are in a normal-on state. Through the pipeline connection mode of changing the gas circuit of the device, can realize that 2 get 1 or 2 get 2 interlock shut down function, can effectively reduce the mistake shut down, ensure that production is stable.
Drawings
FIG. 1 is a schematic diagram of the connection principle of a first solenoid valve and a second solenoid valve in series according to an embodiment of the present utility model;
FIG. 2 is a schematic diagram of a first solenoid valve in series with a second solenoid valve in an embodiment of the utility model;
FIG. 3 is a side view of a first solenoid valve in series with a second solenoid valve in an embodiment of the utility model;
FIG. 4 is a schematic diagram of the connection principle of the first solenoid valve and the second solenoid valve in parallel according to the embodiment of the utility model;
FIG. 5 is a schematic diagram of a first solenoid valve in parallel with a second solenoid valve in an embodiment of the utility model;
fig. 6 is a side view of the first solenoid valve in an embodiment of the utility model in parallel with a second solenoid valve.
In the figure: 1. a bracket; 2. a first electromagnetic valve; 3. a second electromagnetic valve; 4. an actuator; 5. a first pipe; 6. a second pipe; 7. a switching mechanism; 201. a first valve port; 202. a second valve port; 203. a third valve port; 301. a fourth valve port; 302. a fifth valve port; 303. a sixth valve port; 701. a pull rod; 702. a tension spring; 703. a rotating arm; 704. a signboard.
Description of the embodiments
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1 to 6, an embodiment of the present utility model provides a steam turbine electromagnetic protection device with redundancy protection function, which includes a bracket 1, a first electromagnetic valve 2, a second electromagnetic valve 3 and an actuator 4, wherein the first electromagnetic valve 2 and the second electromagnetic valve 3 are arranged on the bracket 1 at intervals, the first electromagnetic valve 2 has a first valve port 201, a second valve port 202 and a third valve port 203, the second electromagnetic valve 3 has a fourth valve port 301, a fifth valve port 302 and a sixth valve port 303, the first valve port 201 of the first electromagnetic valve 2 is communicated with the actuator 4, the second valve port 202 or the third valve port 203 of the first electromagnetic valve 2 is communicated with the fourth valve port 301 of the second electromagnetic valve 3, and at least one of the first electromagnetic valve 2 and the second electromagnetic valve 3 is communicated with compressed air.
By arranging the first electromagnetic valve 2 and the second electromagnetic valve 3 at the actuating mechanism 4 of the steam turbine, the first electromagnetic valve 2 and the second electromagnetic valve 3 are all preferably two-position three-way valves, the first valve port 201 of the first electromagnetic valve 2 is communicated with the actuating mechanism 4, the second valve port 202 or the third valve port 203 of the first electromagnetic valve 2 is communicated with the fourth valve port 301 of the second electromagnetic valve 3 to be communicated with two electromagnetic valves, at least one valve port of the first electromagnetic valve 2 and the second electromagnetic valve 3 is communicated with compressed air, when only the second electromagnetic valve 3 is communicated with compressed air and the third valve port 203 of the first electromagnetic valve 2 is communicated with the fourth valve port 301 of the second electromagnetic valve 3, the first electromagnetic valve 2 and the second electromagnetic valve 3 form a series structure, so when one electromagnetic valve receives a shutdown command, the actuating mechanism 4 is automatically closed, when the first electromagnetic valve 2 and the second electromagnetic valve 3 are both communicated with compressed air and the second valve port 202 of the first electromagnetic valve 2 are communicated with the fourth valve port 301 of the second electromagnetic valve 3, at the moment, the first electromagnetic valve 2 and the second electromagnetic valve 3 form a parallel structure, when two electromagnetic valves are simultaneously closed, and the two electromagnetic valves are in a normally-closed state, and the two electromagnetic valves are in a normal state and are in a redundant state when the two electromagnetic valves are in a normal state and are in a normal state. Through the pipeline connection mode of changing the gas circuit of the device, can realize that 2 get 1 or 2 get 2 interlock shut down function, can effectively reduce the mistake shut down, ensure that production is stable.
In this embodiment, 0.4mpa g compressed air is used as the driving gas of the actuator 4, and the actions of the first electromagnetic valve 2 and the second electromagnetic valve 3 are controlled by the electric signals output by the monitoring instrument installed on the steam turbine, so as to keep the on-off of the 0.4mpa g compressed air, thereby controlling the action of the actuator 4, wherein the control voltage of the electromagnetic valve is 24VDC, and the low voltage safety is good. The electromagnetic valve body is 316L material, and satisfies exdIICT6 explosion-proof authentication, the protection level reaches IP67, accord with dangerous area operation requirement, safe and reliable, and set up to the action of losing electricity (i.e. normally closed solenoid valve), the solenoid valve is opened and is guaranteed compressed air and pass through when the circular telegram, make actuating mechanism 4 be in the state of intercommunication steam turbine steam supply passageway, guarantee the turbine normal operating, when monitoring instrument detects unusual, the solenoid valve outage, actuating mechanism 4 disconnection steam turbine steam supply passageway, the turbine is shut down, the reaction rate is fast, can be after accepting the signal fast action, thereby play the steam turbine admission system of cutting off and make the turbine shut down.
Specifically, referring to fig. 1 to 3, when the first electromagnetic valve 2 and the second electromagnetic valve 3 are connected in series, that is, the third valve port 203 of the first electromagnetic valve 2 is communicated with the fourth valve port 301 of the second electromagnetic valve 3, the sixth valve port 303 of the second electromagnetic valve 3 is communicated with compressed air, and the interfaces of the second valve port 202 of the first electromagnetic valve 2 and the fifth valve port 302 of the second electromagnetic valve 3 are in an air-out state, that is, when the first electromagnetic valve 2 and the second electromagnetic valve 3 are in power-off (that is, a shutdown instruction is received), the second pipeline 6 is opened to normal atmospheric pressure of the actuator 4, that is, the compressed air is cut off, and the actuator 4 is closed; in the normal working state, the sixth valve port 303 and the fourth valve port 301 of the second electromagnetic valve 3 are communicated, compressed air enters the third valve port 203 of the first electromagnetic valve 2 from the second electromagnetic valve 3 and then acts on the executing mechanism 4 through the first valve port 201 of the first electromagnetic valve 2, the executing mechanism 4 is in an open state, otherwise, when the power supply is lost, the electromagnetic valve cuts off the air source, the executing mechanism 4 is automatically closed, when any electromagnetic valve receives a shutdown instruction, the compressed air passage is cut off, and the executing mechanism 4 is closed.
Referring to fig. 4 to 6, when the first electromagnetic valve 2 and the second electromagnetic valve 3 are connected in parallel, the second valve port 202 of the first electromagnetic valve 2 is communicated with the fourth valve port 301 of the second electromagnetic valve 3, the third valve port 203 of the first electromagnetic valve 2 is communicated with compressed air, the sixth valve port 303 of the second electromagnetic valve 3 is communicated with compressed air, the fifth valve port 302 of the second electromagnetic valve 3 is externally connected with atmospheric pressure, and in a normal working state, the first valve port 201 and the third valve port 203 of the first electromagnetic valve 2 are communicated, the fourth valve port 301 and the sixth valve port 303 of the second electromagnetic valve 3 are communicated, and the second valve port 202 of the first electromagnetic valve 2 and the fourth valve port 301 of the second electromagnetic valve 3 are communicated; compressed air can act on the actuator 4 through the first valve port 203 of the first electromagnetic valve 2 and the first valve port 201, meanwhile, compressed air can also be supplied to the second valve port 202 of the first electromagnetic valve 2 through the sixth valve port 303 and the fourth valve port 301 of the second electromagnetic valve 3, when the first electromagnetic valve 2 is accidentally powered off, compressed air immediately acts on the actuator 4 through the second valve port 202 and the first valve port 201 of the first electromagnetic valve 2, so that the continuous operation of the steam turbine is ensured, namely, when one electromagnetic valve receives a shutdown instruction (error instruction or accidental power off of the electromagnetic valve), compressed air can also act on the actuator 4 through the other electromagnetic valve passage, the compressed air passage of the actuator 4 is completely cut off only after the first electromagnetic valve 2 and the second electromagnetic valve 3 completely receive the shutdown instruction, the actuator 4 is closed, the two electromagnetic valves are mutually redundant, the safety is good, and the reliability is high.
Through selecting the connected mode of the gas circuit of first solenoid valve 2 and second solenoid valve 3, two solenoid valves can be each other redundant, and the security is good, and the reliability is high. Through the pipeline connection mode of changing the device's gas circuit, can realize 2 get 1 or 2 get 2 chain shut down function, the former as long as have a solenoid valve to lose electricity and can initiate the shut down, can effective protection equipment, the latter only loses electricity simultaneously and just can initiate the shut down when 2 solenoid valves, can effectively reduce the mistake shut down, ensure that production is stable.
Specifically, the second valve port 202 or the third valve port 203 of the first solenoid valve 2 communicates with the fourth valve port 301 of the second solenoid valve 3 through the first pipe 5, and the first valve port 201, i.e., the output port, of the first solenoid valve 2 communicates with the actuator 4 through the second pipe 6, and the first pipe 5 and the second pipe 6 are provided for inputting compressed air to the actuator 4.
The electromagnetic protection device with redundancy protection function for a steam turbine in the present embodiment further includes a switching mechanism 7, and the switching mechanism 7 is connected to the actuator 4 for providing a driving force for closing the actuator 4.
Specifically, the switch mechanism 7 includes a pull rod 701, a tension spring 702 and a rotating arm 703, the front end of the rotating arm 703 is provided with a signboard 704, the first end of the pull rod 701 is connected to the bracket 1, the second end of the pull rod 701 is connected to one end of the tension spring 702, the other end of the tension spring 702 is connected to the rotating arm 703, the first electromagnetic valve 2, the second electromagnetic valve 3 and the tension spring 702 cooperate to control the actuator 4 to switch in an open or closed state, specifically, when the first electromagnetic valve 2 and the second electromagnetic valve 3 receive a shutdown instruction, compressed air in the second pipeline 6 is intercepted, even if the actuator 4 loses the supply of compressed air, at this time, the rotating arm 703 drives the rotating arm 703 to rotate to a closed state under the elastic force of the tension spring 702 to enable the actuator 4 to be closed, at this time, the actuator 4 is driven to rotate after the compressed air is introduced to work, and then the signboard 704 is in an open position to be in an open state when the elastic force overcoming the elastic force of the tension spring 702 is in an open state, so that the actuator 4 is in an open position, and is in a visual state, and the air is convenient to be patrolled.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "top", "bottom", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a take redundant protect function's steam turbine electromagnetic protection device which characterized in that: the device comprises a bracket, a first electromagnetic valve, a second electromagnetic valve and an actuating mechanism, wherein the first electromagnetic valve and the second electromagnetic valve are arranged on the bracket at intervals, the first electromagnetic valve is provided with a first valve port, a second valve port and a third valve port, the second electromagnetic valve is provided with a fourth valve port, a fifth valve port and a sixth valve port, the first valve port of the first electromagnetic valve is communicated with the actuating mechanism, the second valve port or the third valve port of the first electromagnetic valve is communicated with the fourth valve port of the second electromagnetic valve, and at least one valve port of the first electromagnetic valve and the second electromagnetic valve is communicated with compressed air.
2. The electromagnetic protection device with redundancy protection function for a steam turbine according to claim 1, wherein: the second valve port or the third valve port of the first electromagnetic valve is communicated with the fourth valve port of the second electromagnetic valve through a first pipeline, and the first valve port of the first electromagnetic valve is communicated with the executing mechanism through a second pipeline.
3. The electromagnetic protection device with redundancy protection function for a steam turbine according to claim 2, wherein: the third valve port of the first electromagnetic valve is communicated with the fourth valve port of the second electromagnetic valve, the sixth valve port of the second electromagnetic valve is communicated with compressed air, and the second valve port of the first electromagnetic valve and the fifth valve port of the second electromagnetic valve are externally connected with atmospheric pressure.
4. The electromagnetic protection device with redundancy protection function for a steam turbine according to claim 2, wherein: the second valve port of the first electromagnetic valve is communicated with the fourth valve port of the second electromagnetic valve, the third valve port of the first electromagnetic valve is communicated with compressed air, the sixth valve port of the second electromagnetic valve is communicated with compressed air, and the fifth valve port of the second electromagnetic valve is externally connected with atmospheric pressure.
5. The electromagnetic protection device with a redundancy protection function for a steam turbine according to any one of claims 1 to 4, wherein: the device also comprises a switch mechanism, wherein the switch mechanism is connected with the actuating mechanism and used for providing a driving force for closing the actuating mechanism.
6. The electromagnetic protection device with redundancy protection function for a steam turbine according to claim 5, wherein: the switch mechanism comprises a pull rod, a tension spring and a rotating arm, wherein the first end of the pull rod is connected to the support, the second end of the pull rod is connected to one end of the tension spring, the other end of the tension spring is connected with the rotating arm, and the first electromagnetic valve, the second electromagnetic valve and the tension spring jointly act to control the actuating mechanism to switch under the opening or closing state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321071269.XU CN219387971U (en) | 2023-05-08 | 2023-05-08 | Steam turbine electromagnetic protection device with redundancy protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321071269.XU CN219387971U (en) | 2023-05-08 | 2023-05-08 | Steam turbine electromagnetic protection device with redundancy protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219387971U true CN219387971U (en) | 2023-07-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321071269.XU Active CN219387971U (en) | 2023-05-08 | 2023-05-08 | Steam turbine electromagnetic protection device with redundancy protection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219387971U (en) |
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2023
- 2023-05-08 CN CN202321071269.XU patent/CN219387971U/en active Active
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