CN220979580U - Temperature measuring device for steam valve of steam turbine - Google Patents
Temperature measuring device for steam valve of steam turbine Download PDFInfo
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- CN220979580U CN220979580U CN202322995129.8U CN202322995129U CN220979580U CN 220979580 U CN220979580 U CN 220979580U CN 202322995129 U CN202322995129 U CN 202322995129U CN 220979580 U CN220979580 U CN 220979580U
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- temperature acquisition
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- 238000009529 body temperature measurement Methods 0.000 claims description 14
- 238000003780 insertion Methods 0.000 claims description 14
- 230000037431 insertion Effects 0.000 claims description 14
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 239000011148 porous material Substances 0.000 abstract 1
- 239000002184 metal Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 208000010392 Bone Fractures Diseases 0.000 description 2
- 206010017076 Fracture Diseases 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- 238000013024 troubleshooting Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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Abstract
The utility model relates to a temperature measuring device of steam turbine valve, including temperature acquisition element, heat conduction spare and receiving arrangement, the heat conduction spare is used for connecting on the valve, is provided with the jack on the heat conduction spare, and temperature acquisition element's one end is connected in the jack and is laminated with the pore wall of jack, and temperature acquisition element's the other end is connected with receiving arrangement, and receiving arrangement is used for receiving temperature data that temperature acquisition element gathered. Since the heat conductive member is connected to the valve of the steam turbine, the temperature at the valve can be transferred to the heat conductive member in a short time. Because one end of the temperature acquisition element can be inserted into the jack on the heat conducting piece, the side wall of one end of the temperature acquisition element inserted into the jack can be attached to the hole wall of the jack, and the other end of the temperature acquisition element is connected with the receiving device, so that the accuracy of temperature acquisition of the temperature acquisition element can be effectively improved, and the error of temperature data received by the receiving device is reduced.
Description
Technical Field
The present disclosure relates to the technical field of valve temperature measurement, and in particular, to a temperature measurement device for a steam turbine valve.
Background
At present, in the operation process of the thermal power 1000MW unit, the risk of fracture exists in the bolt on the valve (for example, the main valve of middling pressure or middling pressure regulating valve), and the temperature of the position that the valve is provided with the bolt can rise after the bolt fracture, therefore, the unusual condition in order to detect the bolt of temperature of valve can in time be found through addding temperature measuring device, the risk of unit equipment damage is reduced.
In the related art, one end of a temperature acquisition element for acquiring a temperature signal is generally welded on the surface of a valve, and is only measured when in point-to-surface contact, so that the contact area between the temperature acquisition element and the valve is insufficient, the condition that the temperature signal acquired by the temperature acquisition element is inaccurate occurs, and in addition, the valve is subjected to metal fatigue in a welding mode.
Disclosure of utility model
The present disclosure provides a temperature measuring device for a steam valve of a steam turbine to solve the technical problems existing in the related art.
In order to achieve the above object, the present disclosure provides a temperature measuring device of a steam turbine valve, including a temperature collecting element, a heat conducting member, and a receiving apparatus;
The heat conducting piece is used for being connected to the valve;
The heat conducting piece is provided with a jack, one end of the temperature acquisition element is connected in the jack and is attached to the hole wall of the jack, and the other end of the temperature acquisition element is connected with the receiving equipment;
The receiving equipment is used for receiving the temperature data acquired by the temperature acquisition element.
Optionally, the heat conducting piece is configured as a heat conducting block, and the insertion hole is positioned on one side wall of the heat conducting block;
One end of the temperature acquisition element is connected to the jack in a pluggable manner; or alternatively
One end of the temperature acquisition element is fixedly connected to the jack.
Optionally, a fastener is arranged on the heat conducting block;
The fastener is connected to the heat conducting block, and the fastener is used for locking one end of the temperature acquisition element in the jack in an unlocking mode.
Optionally, the jack extends along a first direction, one end of the jack is configured as an open end, and one end of the temperature acquisition element is inserted into the jack through the open end;
A hole wall of the jack is provided with a threaded hole extending along a second direction, one end of the threaded hole is communicated with the jack, the other end of the threaded hole penetrates through the heat conducting block, and the first direction is perpendicular to the second direction;
The fastener is provided with a first end and a second end, an external thread is formed on the first end of the fastener, the first end of the fastener is in threaded connection with the threaded hole, and the second end of the fastener is provided with an operation part and protrudes out of the heat conducting block, so that the operation part can be screwed to enable the first end of the fastener to be propped against one end of the temperature acquisition element inserted into the jack.
Optionally, the heat conducting blocks are multiple, the multiple heat conducting blocks are arranged at intervals along the circumferential direction of the valve, and the multiple heat conducting blocks are respectively in one-to-one correspondence with the multiple bolts on the valve;
The number of the temperature acquisition elements is a plurality of and corresponds to the number of the heat conduction blocks one by one.
Optionally, the temperature measurement device further comprises a mount;
the mounting piece is wound on the circumferential side wall of the valve;
The heat conducting block is arranged on the inner annular wall of the mounting piece, and one surface, away from the mounting piece, of the heat conducting block is used for being in contact with the side wall of the valve.
Optionally, the mounting includes arc and two installation department, two the installation department connect respectively in the both ends of arc, two connect through adjusting bolt between the installation department, so that the arc forms annular structure.
Optionally, the number of the mounting pieces is at least two;
one of the mounting pieces is used for being sleeved on the circumferential side wall of the medium-pressure main valve, and the other mounting piece is used for being sleeved on the circumferential side wall of the medium-pressure regulating valve;
The number of the temperature acquisition elements is a plurality of and corresponds to the number of the heat conduction blocks one by one.
Optionally, the temperature measurement device further comprises a bus, and the temperature acquisition element comprises a thermocouple and a compensation wire which are connected;
One end of the thermocouple, which is far away from the compensation wire, is in plug-in fit with the jack, one end of the compensation wire, which is far away from the thermocouple, is electrically connected with one end of the bus, and the other end of the bus is electrically connected with the receiving equipment.
Optionally, the temperature measurement device further comprises a PLC controller and a display screen;
the receiving equipment and the display screen are electrically connected with the PLC;
The display screen is used for displaying the temperature acquired by the position of the temperature acquisition element.
By the above technical scheme, since the heat conducting member is connected to the valve of the steam turbine, the temperature on the valve can be transferred to the heat conducting member in a short time. Because one end of the temperature acquisition element can be inserted into the jack on the heat conducting piece, the side wall of one end of the temperature acquisition element inserted into the jack can be attached to the hole wall of the jack, and the other end of the temperature acquisition element is connected with the receiving device, so that the accuracy of temperature acquisition of the temperature acquisition element can be effectively improved, and the error of temperature data received by the receiving device is reduced.
Compared with the technical scheme that a temperature acquisition element is welded on a valve in the related art, the temperature measuring device provided by the disclosure can connect the heat conduction piece on the valve to conduct heat, and one end of the temperature acquisition element can be inserted into the jack on the heat conduction piece to conduct temperature acquisition, so that on one hand, the contact area of the temperature acquisition element and a measuring point is increased, and on the other hand, the accuracy of the temperature acquisition element for acquiring the temperature is effectively improved, and the metal fatigue phenomenon (namely, the valve is cracked due to the fact that the valve is locally and permanently accumulated and damaged) of the valve caused by welding the temperature acquisition element on the valve can be avoided, so that the service life of the valve is prolonged.
Additional features and advantages of the present disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings are included to provide a further understanding of the disclosure, and are incorporated in and constitute a part of this specification, illustrate the disclosure and together with the description serve to explain, but do not limit the disclosure. In the drawings:
FIG. 1 is a schematic illustration of a steam turbine valve temperature measurement device provided in an exemplary embodiment of the present disclosure;
Fig. 2 is a schematic view of a temperature measuring device according to an exemplary embodiment of the present disclosure when a mount and a heat conducting block are connected.
Description of the reference numerals
10-A temperature acquisition element; 11-a thermocouple; 12-compensating wires; 20-a heat conducting block; 21-a jack; 22-fasteners; 221-an operation section; 30-a receiving device; 40-mounting; 41-arc-shaped plate; 42-mounting part; 43-adjusting bolts; 50-bus.
Detailed Description
Specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the disclosure, are not intended to limit the disclosure.
In the description of the present disclosure, it should be understood that the terms "upper", "lower", etc. indicate orientations or positional relationships are defined based on the orientation of the drawing shown in fig. 1, only for convenience in describing the present disclosure and simplifying the description, and do not indicate or imply that the devices or elements being referred to must have a specific orientation, and a specific orientation configuration and operation, and thus should not be construed as limiting the present disclosure, and furthermore, the terms "inner and outer" refer to the inside and outside of the corresponding structural profile. In addition, the terms "first," "second," etc. are merely intended to distinguish one element from another element, and are not sequential or important.
In the description of the present disclosure, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "connected," and "mounted" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this disclosure will be understood by those of ordinary skill in the art as the case may be.
As shown in fig. 1 to 2, the present disclosure provides a temperature measuring device of a steam turbine valve, the temperature measuring device includes a temperature collecting element 10, a heat conducting member and a receiving device 30, the heat conducting member is used for being connected to the valve, a jack 21 is provided on the heat conducting member, one end of the temperature collecting element 10 is connected in the jack 21 and is attached to a wall of the jack 21, the other end of the temperature collecting element 10 is connected with the receiving device 30, and the receiving device 30 is used for receiving temperature data collected by the temperature collecting element 10.
By the above technical scheme, since the heat conducting member is connected to the valve of the steam turbine, the temperature on the valve can be transferred to the heat conducting member in a short time. Because one end of the temperature acquisition element 10 can be inserted into the jack 21 on the heat conducting piece, the side wall of one end of the temperature acquisition element 10 inserted into the jack 21 can be attached to the hole wall of the jack 21, and the other end of the temperature acquisition element 10 is connected with the receiving device 30, so that the accuracy of temperature acquisition of the temperature acquisition element 10 can be effectively improved, and the error of temperature data received by the receiving device 30 is reduced.
Compared with the technical scheme that the temperature acquisition element 10 is welded on the valve in the related art, the temperature measuring device provided by the disclosure can connect the heat conduction piece on the valve to conduct heat, and then one end of the temperature acquisition element 10 can be inserted into the jack 21 on the heat conduction piece to conduct temperature acquisition, so that on one hand, the contact area of the temperature acquisition element 10 and a measuring point is increased, and on the other hand, the accuracy of the temperature acquisition element 10 for acquiring the temperature is effectively improved, and the metal fatigue phenomenon (namely, the valve is cracked due to local permanent accumulated damage) of the valve caused by welding the temperature acquisition element 10 on the valve can be avoided, so that the service life of the valve is prolonged.
Wherein the receiving device 30 may be an intelligent front-end.
Alternatively, as shown in fig. 1, the heat conductive member is configured as a heat conductive block 20, and the insertion hole 21 is located on one side wall of the heat conductive block 20. By this arrangement, the heat conducting block 20 is in surface contact with the valve surface, and the insertion hole 21 is formed in the side wall, so that one end of the temperature collecting element 10 can be conveniently and rapidly inserted.
In one embodiment, one end of the temperature collecting element 10 is connected to the jack 21 in a pluggable manner, so that the temperature collecting element 10 with a fault can be replaced at any time, for example, the temperature collecting element 10 is aged or damaged.
As another embodiment, one end of the temperature collecting element 10 is fixedly connected to the jack 21, so that the temperature collecting element 10 can be prevented from loosening and falling off from the heat conducting member. Wherein, one end of the temperature collecting element 10 is fixedly connected to the jack 21, which may be high temperature resistant glue or welded, which is not limited in the disclosure.
For the embodiment in which one end of the temperature collecting element 10 is connected to the jack 21 in a pluggable manner, as shown in fig. 1, a fastener 22 may be disposed on the heat conducting block 20, the fastener 22 is connected to the heat conducting block 20, and the fastener 22 is used to lock one end of the temperature collecting element 10 in the jack 21 in a releasable manner. Thus, when it is necessary to measure the temperature of the bolt on the valve, one end of the temperature acquisition element 10 can be inserted into the insertion hole 21 of the heat conducting block 20 and fastened by the fastening piece 22, so that the temperature acquisition element 10 can acquire the temperature signal of the valve. When the temperature collecting element 10 is aged or damaged, and the temperature collecting element 10 cannot collect work, the temperature collecting element 10 can be removed from the heat conducting block 20 and replaced by the fastener 22.
As an embodiment, as shown in fig. 1 to 2, the insertion hole 21 extends in a first direction, one end of the insertion hole 21 is configured as an open end, one end of the temperature collecting element 10 is inserted into the insertion hole 21 through the open end, a threaded hole extending in a second direction is provided in a wall of the insertion hole 21, one end of the threaded hole is communicated with the insertion hole 21, the other end of the threaded hole penetrates out of the heat conducting block 20, the first direction is perpendicular to the second direction, the fastening piece 22 has a first end and a second end, an external thread is formed on the first end of the fastening piece 22, the first end of the fastening piece 22 is in threaded connection with the threaded hole, and an operation portion 221 is formed on the second end of the fastening piece 22 and protrudes out of the heat conducting block 20, so that the screwing operation portion 221 can abut against the first end of the fastening piece 22 and one end of the temperature collecting element 10 inserted into the insertion hole 21. Thus, on the one hand, one end of the temperature collecting element 10 inserted into the jack 21 can be attached to the hole wall of the jack 21, the accuracy of collecting temperature signals by the temperature collecting element 10 is effectively improved by increasing the contact area between the temperature collecting element 10 and the heat conducting block 20, and on the other hand, an operator can tightly press the temperature collecting element 10 in the jack 21 by screwing the operation part 221 on the fastener 22, so that reliable connection between the temperature collecting element 10 and the heat conducting block 20 is realized.
Because be provided with a plurality of bolts on the terminal surface of valve to a plurality of bolts encircle the axis interval setting in the valve, consequently, in order to improve the efficiency of carrying out temperature measurement to each bolt position department on the valve, can set up heat conduction piece 20 a plurality of, a plurality of heat conduction pieces 20 set up along the circumference interval of valve, a plurality of heat conduction pieces 20 respectively with a plurality of bolts one-to-one on the valve, wherein, the quantity of temperature acquisition element 10 is a plurality of and with the quantity one-to-one of heat conduction piece 20. Therefore, the temperature data acquisition of each bolt can be realized, the fault bolt can be quickly and accurately found, and the time for troubleshooting the fault bolt is shortened.
As an embodiment, as shown in fig. 2, the temperature measuring device further includes a mounting member 40, the mounting member 40 is wound around a circumferential side wall of the valve, the heat conducting block 20 is disposed on an inner circumferential wall of the mounting member 40, and a side of the heat conducting block 20 away from the mounting member 40 is used for contacting with the side wall of the valve. By the arrangement, the heat conduction block 20 can be more conveniently connected to the valve, and meanwhile, the phenomenon of metal fatigue of the valve can be better avoided.
Alternatively, as shown in fig. 1 to 2, the mounting member 40 includes an arc plate 41 and two mounting portions 42, the two mounting portions 42 are respectively connected to both ends of the arc plate 41, and the two mounting portions 42 are connected by an adjusting bolt 43, so that the arc plate 41 forms a ring structure. Because the mounting piece 40 can be in an annular structure and sleeved on the valve, and then the nuts penetrating through the adjusting bolts 43 on the two mounting portions 42 are screwed, the mounting piece 40 can be tightly held on the valve on one hand, so that the plurality of heat conducting blocks 20 can be simultaneously connected with the side wall of the valve, on the other hand, the mounting piece 40 can be adjusted according to the circumference of the valve, and the mounting piece 40 can be suitable for the valves with different diameters, thereby being beneficial to improving the applicability of the temperature measuring device.
Since there are a plurality of valve valves in the steam turbine, and the bolts on the main and regulator valves are prone to failure, as an embodiment, the number of the mounting members 40 is at least two, one of the mounting members 40 is used to be sleeved on the circumferential side wall of the main valve, and the other mounting member 40 is used to be sleeved on the circumferential side wall of the regulator valve, wherein the number of the temperature collecting elements 10 is plural and corresponds to the number of the heat conducting blocks 20 one by one. By the design, the fault bolt on the valve can be quickly and accurately found, so that an operator can find the fault bolt in time and replace the fault bolt, and the damage risk of the steam turbine is effectively reduced.
Optionally, as shown in fig. 1, the temperature measuring device further includes a bus 50, the temperature collecting element 10 includes a thermocouple 11 and a compensating wire 12 connected to each other, one end of the thermocouple 11 away from the compensating wire 12 is in plug-in fit with the jack 21, one end of the compensating wire 12 away from the thermocouple 11 is electrically connected to one end of the bus 50, and the other end of the bus 50 is electrically connected to the receiving device 30. Compared with the technical scheme that each thermocouple 11 is directly connected with the receiving device 30 through the longer compensating wire 12 in the related art, the present disclosure electrically connects each thermocouple 11 with the bus 50 through the shorter compensating wire 12, that is, the temperature collecting element 10 replaces a plurality of longer compensating wires 12 with the bus 50 to be connected with the receiving device 30, so that a large number of compensating wires 12 can be saved, thereby achieving the purpose of saving resources, and the influence of the disordered compensating wires 12 on the overall aesthetic degree of the temperature measuring device can be avoided.
Wherein the thermocouple 11 may be configured as a sheathed thermocouple 11.
As an embodiment, as shown in fig. 1, the temperature measuring device further includes a PLC controller and a display screen, where the receiving device 30 and the display screen are electrically connected to the PLC controller, and the display screen is used for displaying the temperature collected by the location where the temperature collecting element 10 is located. The temperature signals received by the receiving device 30 are transmitted to the PLC for processing, and then the temperature data of the positions of the bolts arranged on the valve valves are displayed by the display screen, so that an operator can find out the fault bolts through more visual temperature data.
The internal temperature of the valve is 600-630 ℃, and the external temperature of the valve is 580-600 ℃. Wherein, since the temperature on the circumferential side wall of the valve is close to the temperature at the position of the bolt on the valve, the heat conducting block 20 can be connected on the circumferential side wall of the valve, and the position of the fault bolt on the valve can be found by detecting the temperature change of the position. When a certain bolt on the valve breaks, the temperature inside the valve is transmitted through the bolt position, so that the temperature of the sidewall of the valve near the bolt increases, that is, the temperature of the heat conducting block 20 near the bolt increases. In other words, if there is temperature data having a higher value than other collected temperature data in the temperature data collected by the temperature collecting element 10 received by the receiving device 30, it may be stated that the temperature of the heat conducting block 20 corresponding to the temperature collecting element 10 collecting the temperature data is abnormal, that is, there is a possibility that the bolt is broken.
The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings, but the present disclosure is not limited to the specific details of the embodiments described above, and various simple modifications may be made to the technical solutions of the present disclosure within the scope of the technical concept of the present disclosure, and all the simple modifications belong to the protection scope of the present disclosure.
In addition, the specific features described in the foregoing embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, the present disclosure does not further describe various possible combinations.
Moreover, any combination between the various embodiments of the present disclosure is possible as long as it does not depart from the spirit of the present disclosure, which should also be construed as the disclosure of the present disclosure.
Claims (10)
1. A steam turbine valve temperature measurement apparatus, comprising: a temperature acquisition element, a heat conducting member and a receiving device;
The heat conducting piece is used for being connected to the valve;
The heat conducting piece is provided with a jack, one end of the temperature acquisition element is connected in the jack and is attached to the hole wall of the jack, and the other end of the temperature acquisition element is connected with the receiving equipment;
The receiving equipment is used for receiving the temperature data acquired by the temperature acquisition element.
2. The steam turbine valve temperature measurement device of claim 1, wherein the heat conducting member is configured as a heat conducting block, and the insertion hole is located on one side wall of the heat conducting block;
One end of the temperature acquisition element is connected to the jack in a pluggable manner; or alternatively
One end of the temperature acquisition element is fixedly connected to the jack.
3. The steam turbine valve temperature measurement device of claim 2, wherein the heat conducting block is provided with a fastener;
The fastener is connected to the heat conducting block, and the fastener is used for locking one end of the temperature acquisition element in the jack in an unlocking mode.
4. A steam turbine valve temperature measuring device according to claim 3, wherein the insertion hole extends in a first direction, one end of the insertion hole is configured as an open end, and one end of the temperature acquisition element is inserted into the insertion hole through the open end;
A threaded hole extending along a second direction is formed in the hole wall of the jack, one end of the threaded hole is communicated with the jack, the other end of the threaded hole penetrates through the heat conducting block, and the first direction is perpendicular to the second direction;
The fastener is provided with a first end and a second end, an external thread is formed on the first end of the fastener, the first end of the fastener is in threaded connection with the threaded hole, and the second end of the fastener is provided with an operation part and protrudes out of the heat conducting block, so that the operation part can be screwed to enable the first end of the fastener to be propped against one end of the temperature acquisition element inserted into the jack.
5. The steam turbine valve temperature measuring device according to claim 2, wherein the number of the heat conducting blocks is plural, the plural heat conducting blocks are arranged at intervals along the circumferential direction of the valve, and the plural heat conducting blocks are respectively in one-to-one correspondence with the plural bolts on the valve;
The number of the temperature acquisition elements is a plurality of and corresponds to the number of the heat conduction blocks one by one.
6. The steam turbine valve temperature measurement device of claim 2, further comprising a mounting member;
the mounting piece is wound on the circumferential side wall of the valve;
The heat conducting block is arranged on the inner annular wall of the mounting piece, and one surface, away from the mounting piece, of the heat conducting block is used for being in contact with the side wall of the valve.
7. The steam turbine valve temperature measuring device according to claim 6, wherein the mounting member comprises an arc plate and two mounting portions, the two mounting portions are respectively connected to two ends of the arc plate, and the two mounting portions are connected by an adjusting bolt, so that the arc plate forms a ring structure.
8. The steam turbine valve temperature measurement device of claim 6, wherein the number of mounting members is at least two;
One of the mounting pieces is used for being sleeved on the circumferential side wall of the medium-pressure main valve, and the other mounting piece is used for being sleeved on the circumferential side wall of the medium-pressure regulating valve.
9. The steam turbine valve temperature measurement device of any one of claims 1-8, further comprising a bus, the temperature acquisition element comprising a thermocouple and a compensation wire connected;
One end of the thermocouple, which is far away from the compensation wire, is in plug-in fit with the jack, one end of the compensation wire, which is far away from the thermocouple, is electrically connected with one end of the bus, and the other end of the bus is electrically connected with the receiving equipment.
10. The steam turbine valve temperature measurement device of any one of claims 1-8, further comprising a PLC controller and a display screen;
the receiving equipment and the display screen are electrically connected with the PLC;
The display screen is used for displaying the temperature acquired by the position of the temperature acquisition element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322995129.8U CN220979580U (en) | 2023-11-02 | 2023-11-02 | Temperature measuring device for steam valve of steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322995129.8U CN220979580U (en) | 2023-11-02 | 2023-11-02 | Temperature measuring device for steam valve of steam turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220979580U true CN220979580U (en) | 2024-05-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322995129.8U Active CN220979580U (en) | 2023-11-02 | 2023-11-02 | Temperature measuring device for steam valve of steam turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220979580U (en) |
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2023
- 2023-11-02 CN CN202322995129.8U patent/CN220979580U/en active Active
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