CN218917427U - Rotating speed probe, rotating speed probe mounting sleeve, steam turbine and power generation system - Google Patents

Abstract

The embodiment relates to the field of parts for power plants. Relates to a rotating speed probe, a rotating speed probe installation sleeve, a steam turbine and a power generation system. The rotating speed probe comprises a probe head, a probe middle part and a probe tail part, wherein the probe tail part is connected with a probe signal wire. The rotating speed probe installation sleeve comprises a positioning nut and the rotating speed probe in the previous embodiment, wherein the positioning nut is matched with threads in the middle of the probe, and the positioning nut is sleeved in the middle of the probe. The steam turbine comprises the rotating speed probe. A power generation system comprising the turbine as described above. The rotating speed probe provided by the utility model is convenient for accurately recording the insertion depth and is convenient for being installed again after being detached and maintained.

Description

Rotating speed probe, rotating speed probe mounting sleeve, steam turbine and power generation system

Technical Field

The utility model relates to the field of parts for power plants, in particular to a rotating speed probe, a rotating speed probe mounting sleeve, a steam turbine and a power generation system.

Background

The rotation speed probe is a detector for detecting rotation speed, and is generally installed on a pump body or a steam turbine to measure the rotation speed.

The rotating speed probe needs to adjust the gap voltage during installation, and the gap voltage usually measures the voltage and rotates the probe at the same time, so as to adjust the insertion depth of the probe. For probes which need to be disassembled and maintained regularly, the workload is complicated.

In view of this, the present application is specifically proposed.

Disclosure of Invention

The utility model aims to provide a rotating speed probe, a rotating speed probe mounting sleeve, a steam turbine and a power generation system, and aims to solve at least one problem in the background art.

Embodiments of the present utility model are implemented as follows:

in a first aspect, the utility model provides a rotating speed probe, which comprises a probe head, a probe middle part and a probe tail part, wherein the probe tail part is connected with a probe signal wire.

In an alternative embodiment, an indication groove is formed in the middle of the probe along the length direction of the probe, and a first scale mark is arranged in the indication groove.

In a second aspect, the utility model provides a rotational speed probe mounting kit, which comprises a positioning nut and the rotational speed probe according to the previous embodiment, wherein the positioning nut is matched with threads in the middle of the probe, and the positioning nut is sleeved in the middle of the probe.

In an alternative embodiment, one face of the positioning nut is provided with second scale marks around the screw hole thereof.

In an alternative embodiment, the second scale markings are located on a face of the positioning nut proximate the probe tail.

In an alternative embodiment, a gap voltage measurement device is also included.

In a third aspect, the present utility model provides a steam turbine comprising a speed probe as in the previous embodiment, or a speed probe mounting kit as in any of the previous embodiments.

In a fourth aspect, the present utility model provides a power generation system comprising a steam turbine as in the previous embodiments.

The embodiment of the utility model has the beneficial effects that:

the rotational speed probe that this embodiment provided is when first use, is connected probe signal line and voltage measurement device, and rotational speed probe installs when inserting the pump body or the steam turbine that correspond, inserts the clearance voltage size of detection limit, and probe installation is accomplished when the depth of insertion corresponds suitable clearance voltage, through first scale mark, record depth of insertion this moment, so after regularly dismantling the maintenance probe, install the probe again then need not to connect voltage detection device, and the probe is accomplished the probe installation with the direct insertion of this degree of depth of probe of the degree of depth of insertion of accessible first record. Therefore, the probe can be conveniently detached and reinstalled after maintenance by arranging the first scale mark in the middle of the probe.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a rotation speed probe according to an embodiment of the present utility model;

fig. 2 is a schematic structural diagram of a rotational speed probe mounting kit according to an embodiment of the present utility model;

fig. 3 is a top view of the nut of fig. 2.

Icon 100-rotating speed probe; 101-a probe head; 102-the middle part of the probe; 103-the tail of the probe; 104-a probe signal line; 110-indicating grooves; 111-scale mark; 112-threading; 10-mounting and sleeving the rotating speed probe; 11-a nut; 12-second scale mark.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. 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.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal," "vertical," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1, the embodiment of the application provides a rotating speed probe 100, which includes a probe head 101, a probe middle 102 and a probe tail 103, the probe tail 103 is connected with a probe signal line 104, the outer wall of the probe middle 102 is provided with threads 112, and the outer wall of the probe middle 102 is also provided with a first scale mark 111.

When the rotating speed probe 100 is used for the first time, the probe signal wire 104 is connected with the voltage measuring device, the rotating speed probe 100 is inserted into a corresponding pump body or steam turbine, the gap voltage is detected while the probe is inserted, the probe is installed when the insertion depth corresponds to the proper gap voltage, the insertion depth is recorded through the first scale mark 111, the probe is installed again after the maintenance probe is detached regularly, the voltage detecting device is not required to be connected, and the probe can be directly inserted into the depth through the first recorded insertion depth to complete the probe installation. Therefore, the first scale mark 111 is arranged in the middle part 102 of the probe, so that the probe can be conveniently detached and installed again after maintenance.

Preferably, the probe middle part 102 is provided with an indication groove 110 along the length direction, and a first scale mark 111 is arranged in the indication groove 110.

In the process of installing the probe, the probe needs to be matched with the nut 11 for positioning, the indication groove 110 is formed in order not to influence the connection characteristic of the screw thread 112, and the first scale mark 111 is arranged in the indication groove 110.

As shown in fig. 1 and fig. 2, the embodiment of the present application further provides a rotational speed probe installation kit 10, including a positioning nut 11 and the rotational speed probe 100 provided in the embodiment of the present application, where the positioning nut 11 is matched with a thread 112 of a probe middle 102, and the positioning nut 11 is sleeved on the probe middle 102.

The positioning nut 11 is used for being sleeved on the middle part 102 of the probe, and is connected through threads 112 to position the insertion depth of the probe.

Further, as shown in fig. 3, a second scale mark 12 is provided on one surface of the positioning nut 11 around the screw hole.

After the first insertion of the probe, the specific position of the second scale mark 12 indicating that one edge of the groove 110 is aligned may be recorded in addition to the first scale mark 111 insertion depth. The gap voltage may vary greatly due to the small difference in the insertion depths of the rotational speed probes 100. The second scale mark 12 is arranged, the specific position aligned with the indication groove 110 when the probe is first inserted is recorded, and when the probe is inserted again after disassembly and maintenance, the rotating speed probe 100 is inserted to the indication position of the first scale mark 111 and the indication position of the second scale mark 12, so that the installation depth can be ensured to be more accurate.

Further, the second scale mark 12 is located on the side of the positioning nut 11 near the probe tail 103.

The arrangement described above allows the second scale markings 12 to be outermost, facilitating staff readings.

Further, the rotational speed probe mounting kit 10 also includes a gap voltage measurement device.

Gap voltage measurement is used to measure the gap voltage when the rotational speed probe 100 is first installed.

In summary, the rotating speed probe 100 and the rotating speed probe mounting sleeve 10 provided in the embodiments of the present application are convenient for a worker to accurately record the insertion depth of the probe, and are convenient for being mounted again after being detached and maintained.

Embodiments of the present application also provide a steam turbine including the rotational speed probe 100 provided by embodiments of the present application, or the rotational speed probe mounting kit 10 provided by embodiments of the present application.

The turbine comprises the rotating speed probe 100 provided by the embodiment of the application, so that the rotating speed probe 100 is convenient to disassemble and maintain.

The embodiment of the application also provides a power generation system, which comprises the steam turbine provided by the embodiment of the application.

The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (8)

1. The rotating speed probe comprises a probe head, a probe middle part and a probe tail part, wherein the probe tail part is connected with a probe signal wire.

2. The rotational speed probe of claim 1, wherein an indication groove is formed in the middle of the probe along the length direction of the probe, and a first scale mark is arranged in the indication groove.

3. The rotating speed probe installation set is characterized by comprising a positioning nut and the rotating speed probe as claimed in claim 1 or 2, wherein the positioning nut is matched with threads in the middle of the probe, and the positioning nut is sleeved in the middle of the probe.

4. A rotational speed probe mounting kit according to claim 3, wherein one face of the locating nut is provided with second scale markings around its screw hole.

5. The rotational speed probe mounting kit of claim 4, wherein the second scale markings are located on a face of the positioning nut proximate the probe tail.

6. A rotational speed probe mounting kit according to claim 3, further comprising gap voltage measurement means.

7. A steam turbine comprising a speed probe according to claim 1 or 2, or a speed probe mounting kit according to any one of claims 3 to 6.

8. A power generation system comprising the steam turbine of claim 7.

Images