CN210343890U - Hydraulic drive device and barring device - Google Patents
Hydraulic drive device and barring device Download PDFInfo
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- CN210343890U CN210343890U CN201921295511.5U CN201921295511U CN210343890U CN 210343890 U CN210343890 U CN 210343890U CN 201921295511 U CN201921295511 U CN 201921295511U CN 210343890 U CN210343890 U CN 210343890U
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Abstract
The utility model provides a hydraulic drive device and barring device, this hydraulic drive device includes: the oil pump receives the piston of this oil pump drive for the piston is reciprocating motion in piston hydraulic cylinder, still includes: the air-vent valve, to the oil pressure setting pressure of oil pump output end, an oil circuit of drawing forth by the air-vent valve is connected to piston hydraulic cylinder's upper end through a switching-over valve, and another oil circuit connection return switching-over valve can be drawn forth to piston hydraulic cylinder's lower extreme, through the state that changes the switching-over valve to make reciprocating motion between the primary importance and the second place of piston in piston hydraulic cylinder, make the utility model discloses a hydraulic drive device with less volume, more succinct pipeline setting is with a barring gear of drive, thereby accomplishes the action of drive steam turbine.
Description
Technical Field
The utility model relates to a hydraulic drive device has especially related to an utilize hydraulic drive device of barring gear of hydraulic drive steam turbine.
Background
The turbine is driven by steam during operation, so that its internal temperature is high. After the turbine is shut down, the lower portion of the turbine rotor is cooled faster than the upper portion, which may cause the turbine rotor to buckle due to uneven temperature. Therefore, for a steam turbine with a large bearing span, a turning gear needs to be used for slow rotation, and uniform cooling is realized.
Common driving devices of the barring gear include an electric motor and a hydraulic driving device. However, steam turbine rotors are generally heavy, requiring a motor with a high drive torque, which is bulky, so that limited working space is occupied. The hydraulic driving device can generally use a small-sized oil pump to drive the barring gear. However, the oil circuit and pipeline arrangement of the hydraulic driving device usually bring great redundancy, and the routine maintenance is not easy.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a can solve above-mentioned and/or other technical problem's oil pump hydraulic drive device to the setting of the oil circuit of optimization, pipeline and valve realizes routine maintenance's simplicity.
In one aspect, the utility model provides a hydraulic drive device, this hydraulic drive device includes: the oil pump, oil pump drive's piston, the piston is reciprocating motion in piston hydraulic cylinder, piston hydraulic cylinder includes first oil circuit port at least to and second oil circuit port, its characterized in that, hydraulic drive device still includes: the first pressure regulating valve is arranged at the output end of the oil pump and used for setting the pressure of the fluid pressure output by the oil pump; the first oil path is led out from the output end of the first pressure regulating valve and is connected to the first oil path port; the second oil way is led out from the second oil way port; a switching valve which is at least designed as a first switching valve position and a second switching valve position, the first direction valve state bit is configured to communicate the first oil passages on both sides of the direction valve through the direction valve, and communicating second oil passages on both sides of the direction changing valve through the direction changing valve, the second direction changing valve state being configured to communicate the first oil passage with the second oil passage through the direction changing valve, wherein when the direction valve is configured in a first direction valve state position, fluid output by the oil pump pushes the piston to move in a first direction through the first oil passage, and the fluid enters the second oil passage through the second oil passage port, when the directional valve is configured to the second state position, the fluid flows from the first oil passage to the second oil passage through the directional valve, pushing the piston to move in a second direction. Therefore, the utility model discloses a hydraulic drive device can utilize less volume, and more succinct pipeline setting is in order to drive a barring gear.
Optionally, the reversing valve of the hydraulic driving device is a two-position four-way electromagnetic reversing valve. Therefore, the utility model discloses a hydraulic drive device can utilize less volume, and more succinct pipeline setting is in order to drive a barring gear.
Alternatively, the hydraulic drive apparatus is configured with one or a combination of a first regulator valve and a first check valve between the direction change valve and the first oil passage port located in the first oil passage, and with one or a combination of a second regulator valve and a second check valve between the direction change valve and the second oil passage port located in the second oil passage.
Optionally, the hydraulic drive apparatus is configured with a first pressure gauge between the directional valve located in the first oil passage and the first oil passage port, and a second pressure gauge between the directional valve located in the second oil passage and the second oil passage port.
Alternatively, the first oil passage port of the hydraulic drive apparatus is configured to be located at a first height of a side surface of the piston cylinder, the second oil passage port is configured to be located at a second height of the side surface of the piston cylinder, and when the piston moves to a position at which the second oil passage port communicates with the first oil passage port in a process in which the fluid pushes the piston to move in the first direction through the first oil passage, the fluid flows into the second oil passage through the second oil passage port.
Optionally, the outlet end of the second oil path of the hydraulic drive device, which is communicated with the reversing valve, is also configured to be communicated with an oil unloading path.
Optionally, the hydraulic drive apparatus further comprises: at least one sensor configured to detect at least whether the piston is in a first position and a second position of the piston cylinder, wherein the piston is configured to move between the first position and the second position; and a signal trigger configured to send a signal to the directional valve to trigger the directional valve to switch between a first directional valve state position and a second directional valve state position; when the sensor detects that the piston is located at the first position, the signal trigger is triggered to send a signal to the reversing valve to trigger the reversing valve to be switched from the second reversing valve state to the first reversing valve state position, so that the piston moves towards the first direction; when the second sensor detects that the piston is located at the second position, the signal trigger is triggered to send a signal to the reversing valve to trigger the reversing valve to be switched from the first reversing valve state to the second reversing valve state, so that the piston moves towards the second direction. Therefore, the utility model discloses a hydraulic drive device can be located the position of piston hydraulic cylinder through the perception piston to switch the state of switching-over valve, thereby switch the direction that high-pressure oil flowed in the pipeline so that piston output reciprocating force.
On the other hand, the utility model also provides a barring device, this barring device includes: a barring body configured to drive a turbine rotor; a gear configured to drive the barring body; it is characterized by also comprising: a lever device configured to be coupled with the gear; and the hydraulic driving device, wherein a piston of the hydraulic driving device is coupled with the pull rod device, and the reciprocating motion of the piston drives the pull rod to do work on the gear so as to drive the barring body. Therefore, the utility model discloses a hydraulic drive device can utilize less volume, and a rolling gear drive turbine rotor is used in more succinct pipeline setting.
Drawings
The drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention. Wherein the content of the first and second substances,
FIG. 1 is a flow chart illustrating a pipe meter of a hydraulic drive according to an exemplary embodiment.
10: hydraulic drive device 101: oil pump
102: pressure regulating valve 103: piston
104: two-position four-way electromagnetic directional valve 105: regulating valve and check valve
106: a pressure gauge 107: first position switch
108: second position switch 109: signal trigger
20: barring gear
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings, in which like reference numerals refer to like parts in the drawings.
FIG. 1 is a flow chart illustrating a pipe meter of a hydraulic drive according to an exemplary embodiment.
As shown in fig. 1, the hydraulic drive apparatus 10 includes: an oil pump 101, a pressure regulating valve 102, a piston 103, a two-position four-way electromagnetic directional valve 104, a regulating valve and check valve 105, a pressure gauge 106, a first position switch 107, a second position switch 108, and a signal trigger 109. The piston 103 of the hydraulic driving device 10 may also be coupled to a rod device of the barring gear 20 to output a reciprocating driving force through the piston 103 of the hydraulic driving device 10, and the barring gear 20 is driven through the rod device.
The oil pump 101 outputs a high-pressure oil body of a certain pressure to the pipe, and the pressure of the high-pressure oil body can be set after the high-pressure oil body passes through the pressure regulating valve 102.
The output end of the pressure regulating valve 102 may lead out an oil path B, and the oil path B may first pass through a two-position four-way electromagnetic directional valve 104 and then be connected to an upper end oil port U1 of a piston hydraulic cylinder of the piston 103. An adjusting valve and a check valve 105 may be disposed in the oil path B between the upper oil port U1 and the two-position four-way electromagnetic directional valve 104, and a pressure gauge 106 may be disposed in the oil path B between the upper oil port U1 and the two-position four-way electromagnetic directional valve 104 to detect the oil pressure of the oil path B.
An oil path A can be led out from an oil port U2 at the lower end of the piston hydraulic cylinder, and the oil path A can be connected back to the pressure regulating valve 102 through a two-position four-way electromagnetic directional valve 104. A check valve 105 may be disposed between the lower port U2 and the two-position four-way valve 104, and a pressure gauge 106 may be disposed in the oil passage a between the lower port U2 and the two-position four-way solenoid directional valve 104 to detect the oil pressure of the oil passage a.
The two-position four-way electromagnetic directional valve 104 may have a two-position state in which the oil passages a on both sides of the two-position four-way electromagnetic directional valve 104 are communicated through the two-position four-way electromagnetic directional valve 104 when the two-position four-way electromagnetic directional valve 104 is in the first position. At this time, the high-pressure oil body output by the oil pump 101 passes through the two-position four-way electromagnetic directional valve 104, enters the piston hydraulic cylinder through the upper port U1, pushes the piston 103 to move downward, and when the piston 103 is pushed to a position below the lower port U2, the oil body flows out from the lower port U2 through the oil path a.
When the two-position four-way electromagnetic directional valve 104 is at the second position, the oil path a at one side of the two-position four-way electromagnetic directional valve 104 is communicated with the oil path B at the other side thereof, and the oil path a at the other side of the two-position four-way electromagnetic directional valve 104 is communicated with the oil path B at one side thereof. At this time, the high-pressure oil body output from the oil pump 101 passes through the two-position four-way electromagnetic directional valve 104, enters the piston cylinder through the lower port U2, pushes the piston 103 to move upward, and when the piston 103 is pushed to a position above the upper port U1, the oil body flows out from the upper port U1 through the oil path B. Therefore, the piston 103 reciprocates in the piston cylinder by switching the two-position four-way electromagnetic directional valve 104 between two-position states.
Alternatively, the oil passage B between the two-position four-way electromagnetic directional valve 104 and the pressure-adjusting valve 102 may communicate with an oil discharge passage T through which the oil body is discharged out of the hydraulic drive apparatus 10.
Further, the first position switch 107 may be disposed at a high position of the piston cylinder to detect whether the piston 103 is located at a lowest position allowed by the upward movement in the piston cylinder, which corresponds to a range where the piston 103 outputs work in one direction outward. The second position switch 108 may be disposed at a low position of the piston cylinder to detect whether the piston 103 is at a lowest position allowed by downward movement in the piston cylinder, which corresponds to a range where the piston 103 outputs work in an opposite direction, and the piston 103 is configured to reciprocate between the lowest position and the highest position. When the second position switch 108 detects that the piston 103 moves to the lowest position, the second position switch 108 triggers the signal trigger 109 to switch the two-position four-way electromagnetic directional valve 104 to the second position, so that the oil body enters the piston hydraulic cylinder through the lower end oil port U2 to push the piston 103 upwards. When the first position switch 107 detects that the piston 103 reaches the highest position, the trigger signal trigger 109 switches the two-position four-way electromagnetic directional valve 104 to the first position, so that the oil body enters through the upper oil port U1 and pushes down the piston 103.
Further, the barring gear 20 may be configured to drive a turbine to rotate to cool the turbine, and the barring gear may include: the jigger comprises a jigger body, gears and a pull rod device. The turning gear body position one is constructed position and drives a steam turbine. A gear device configured to drive the barring body. A lever arrangement configured to couple with the gear arrangement. The piston 103 of the hydraulic drive 10 is mechanically coupled to the drawbar arrangement. The reciprocating motion of the piston 103 drives the pull rod to do work on the gear to drive the barring body. The reciprocating motion of the piston 103 drives the pull rod device, and when the piston 103 moves downwards, the pull rod device does not work on the gear, so that the barring body does not rotate. When the piston moves upwards, the pull rod device is driven to apply work to the gear, so that the barring body rotates, and the steam turbine is driven to rotate.
It should be understood that although the present description has been described in terms of various embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and those skilled in the art will recognize that the embodiments described herein may be combined as suitable to form other embodiments, as will be appreciated by those skilled in the art.
The above description is only exemplary of the present invention, and is not intended to limit the scope of the present invention. Any equivalent changes, modifications and combinations that may be made by those skilled in the art without departing from the spirit and principles of the invention should be considered within the scope of the invention.
Claims (8)
1. A hydraulic drive apparatus comprising: an oil pump, piston (103) that oil pump (101) driven, reciprocating motion is made in piston hydraulic cylinder to piston (103), piston hydraulic cylinder includes first oil circuit port at least to and second oil circuit port, its characterized in that, hydraulic drive device still includes:
a first pressure regulating valve (102) provided at an output end of the oil pump (101) and configured to set a pressure level for a fluid pressure output from the oil pump (101);
a first oil passage (B) led out from an output end of the first pressure regulating valve (102) and connected to the first oil passage port (U1);
a second oil passage (A) led out from the second oil passage port (U2);
a direction change valve (104), the direction change valve (104) being configured at least as a first direction change valve status position and as a second direction change valve status position, the first direction change valve status position being configured to communicate the first oil passage (B) on both sides of the direction change valve through the direction change valve and to communicate the second oil passage (A) on both sides of the direction change valve through the direction change valve, and the second direction change valve status position being configured to communicate the first oil passage (B) on both sides of the direction change valve with the second oil passage (A) through the direction change valve (104),
wherein when the reversing valve (104) is configured to be in a first reversing valve state position, fluid output by the oil pump (101) pushes the piston (103) to move in a first direction through a first oil path (B), and the fluid enters a second oil path (A) through a second oil path (A) port,
when the direction valve is configured to the second state position, the fluid flows from the first oil passage (B) to the second oil passage (A) through the direction valve (104), and the piston (103) is pushed to move in the second direction.
2. The hydraulic drive of claim 1, wherein the directional valve (104) is a two-position, four-way electromagnetic directional valve (104).
3. The hydraulic drive apparatus according to claim 1, characterized in that one or a combination of a first regulator valve and a first check valve (105) is configured between the directional valve (104) located in the first oil passage (B) and the first oil passage port (U1), and one or a combination of a second regulator valve and a second check valve (105) is configured between the directional valve (104) located in the second oil passage (a) and the second oil passage port (U2).
4. The hydraulic drive apparatus according to claim 1, characterized in that a first pressure gauge (106) is configured between the direction change valve (104) located in the first oil passage (B) and the first oil passage port, and a second pressure gauge (106) is configured between the direction change valve (104) located in the second oil passage (a) and the second oil passage port.
5. The hydraulic drive apparatus according to claim 1, wherein the first oil passage port (U1) is configured to be located at a first height of a side surface of the piston-cylinder, and the second oil passage port (U2) is configured to be located at a second height of the side surface of the piston-cylinder, and when the piston (103) moves to a position at which the second oil passage port (U2) communicates with the first oil passage port (U1) in a process in which the fluid pushes the piston (103) to move in a first direction via a first oil passage, the fluid flows into the second oil passage (a) through the second oil passage port.
6. The hydraulic drive as recited in claim 5, characterized in that the outlet end of the second oil passage (A) communicating with the directional valve is also configured to communicate with an oil discharge passage (T).
7. The hydraulic drive of claim 1, further comprising:
at least one sensor (107, 108) configured to detect at least whether the piston (103) is located in a first position and a second position of the piston cylinder, wherein the piston (103) is configured to move between the first position and the second position;
and a signal trigger (109) configured to send a signal to the directional valve (104) to trigger the directional valve (104) to switch between a first directional valve state position and a second directional valve state position;
when the sensor (107, 108) detects that the piston (103) is located at the first position, triggering the signal trigger (109) to send a signal to the reversing valve to trigger the reversing valve (104) to switch from the second reversing valve state to the first reversing valve state position, so that the piston (103) moves towards the first direction;
when the sensor (107, 108) detects that the piston is located at the second position, the signal trigger (109) is triggered to send a signal to the reversing valve (104) to trigger the reversing valve (104) to switch from the first reversing valve state to the second reversing valve state, so that the piston (103) moves towards the second direction.
8. A barring apparatus, comprising: a barring body configured to drive a turbine rotor; a gear configured to drive the barring body; it is characterized by also comprising:
a lever device configured to be coupled with the gear; and
the hydraulic drive of any one of claims 1-7 wherein a piston (103) of said hydraulic drive is coupled to said drawbar arrangement, reciprocating movement of said piston (103) driving the drawbar to apply work to said gear to drive said barring body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921295511.5U CN210343890U (en) | 2019-08-12 | 2019-08-12 | Hydraulic drive device and barring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921295511.5U CN210343890U (en) | 2019-08-12 | 2019-08-12 | Hydraulic drive device and barring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210343890U true CN210343890U (en) | 2020-04-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921295511.5U Active CN210343890U (en) | 2019-08-12 | 2019-08-12 | Hydraulic drive device and barring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210343890U (en) |
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2019
- 2019-08-12 CN CN201921295511.5U patent/CN210343890U/en active Active
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Address after: No. 3, Gaoxin 7th Road, High tech Zone, Huludao City, Liaoning Province, 125000 Patentee after: Siemens Energy Industry Turbine Machinery (Huludao) Co.,Ltd. Address before: No. 3, Gaoxin 7th Road, High tech Zone, Huludao City, Liaoning Province, 125000 Patentee before: SIEMENS INDUSTRIAL TURBOMACHINERY (HULUDAO) Co.,Ltd. |