CN109888990B - A pressure-sensitive anti-collision device - Google Patents

Abstract

The invention relates to a pressure-sensitive anti-collision device, which is used for drawing a stator from an armature in the process of maintenance of an exciter, wherein a gap is reserved between the outer side wall of the stator and the inner side wall of the armature to form an air gap; the air gap is arranged opposite to an observation hole arranged on the end face of the stator far away from the armature, and the pressure-sensitive anti-collision device comprises a pressure-sensitive sensing unit, a pressure-sensitive detection unit and an alarm unit; the pressure sensing unit is arranged in the air gap; the pressure detection unit is arranged on one side of the observation hole, which is opposite to the air gap, and is connected with the pressure sensing unit and the alarm unit to detect whether the pressure sensing unit senses the pressure, and when the pressure sensing unit senses the pressure, an alarm instruction is output to the alarm unit, and an alarm signal is sent by the alarm unit. When the stator is pulled through from the armature, the pressure-sensitive anti-collision device can prevent the stator from colliding with the armature, the safety of the pulled stator is improved, and the labor cost is saved.

Description

A pressure-sensitive anti-collision device

technical field

The invention relates to the technical field of nuclear power, and more particularly, to a pressure-sensitive anti-collision device.

Background technique

During the overhaul of the nuclear power plant, the exciter stator needs to be overhauled. The exciter stator is a barrel structure, which is installed inside the armature, and the armature is also a barrel structure. The air gap between the stator and the armature is only 2-3mm, and the total length of the stator is about 1 meter. During the extraction and penetration process, personnel need to observe the air gap through the measuring hole. Adjust to avoid collision between the outer circle of the stator and the inner circle of the armature. If the collision between the two is not detected in time and the trolley continues to be pulled, both the armature and the stator may be severely damaged.

The current difficulty is that four people are required to visually observe the gap in four directions: up, down, left, and right at the same time. At a length of 1 meter, with poor lighting, it is more difficult to observe whether a 2-3mm air gap has changed to a dangerous level (such as 1mm), and whether a collision has occurred. In particular, the outer surface of the stator is not a regular circle, and has certain low undulations.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to provide a pressure-sensitive anti-collision device that can prevent the stator from colliding with the armature when the stator is withdrawn from the armature.

The technical solution adopted by the present invention to solve the technical problem is: constructing a pressure-sensitive anti-collision device, which is used for pulling out the stator from the armature when the exciter is overhauled, the outer side wall of the stator and the inner side of the armature A gap is left between the walls to form an air gap; the air gap is arranged opposite to the observation hole provided on the end face of the stator away from the armature;

The pressure-sensitive anti-collision device includes a pressure-sensitive sensing unit, a pressure-sensitive detection unit, and an alarm unit; the pressure-sensitive sensing unit is arranged in the air gap; the pressure-sensitive detection unit is arranged between the observation hole and the The opposite side of the air gap is connected to the pressure sensing unit and the alarm unit to detect whether the pressure sensing unit senses pressure sensing, and when the pressure sensing unit senses pressure sensing , output the alarm instruction to the alarm unit, and the alarm unit sends out an alarm signal.

Preferably, the pressure-sensitive induction unit comprises a first conductive portion disposed in the air gap and extending along the stator axial direction, and disposed in the air gap apart from the first conductive portion and disposed side by side and a second conductive portion extending along the axial direction of the stator, and an elastic insulating portion provided between the first conductive portion and the second conductive portion;

The first conductive part and the second conductive part are connected to the pressure-sensing detection unit, and when the distance between the outer side wall of the stator and the inner side wall of the armature is less than a set distance, the first conductive part is The pressure-sensitive part and the second conductive part are connected to form a pressure-sensitive signal output to the pressure-sensitive detection unit, and the pressure-sensitive detection unit receives the pressure-sensitive signal and outputs an alarm instruction to the alarm unit.

Preferably, the elastic insulating portion includes at least two rows of elastic insulating components;

The at least two rows of elastic insulation components are arranged side by side along the circumferential direction of the stator, and the elastic insulation components include a plurality of elastic insulation pieces that are separated and arranged side by side, the first side of each elastic insulation piece and the first side of the elastic insulation piece. a conductive part abuts, the second side abuts the second conductive part;

The elastic insulating members of the two adjacent rows of elastic insulating assemblies are staggered.

Preferably, the distance from the side wall of the first conductive part opposite the stator to the side wall of the second conductive part opposite to the stator is less than or equal to the distance from the outer side wall of the stator to the electrical The set distance between the inner side walls of the pivot.

Preferably, the first conductive part includes a strip-shaped first conductive substrate; the second conductive part includes a strip-shaped second conductive substrate;

The lengths of the first conductive substrate and the second conductive substrate are larger than the length of the air gap, and one end of the first conductive substrate and the second conductive substrate are respectively arranged through the observation hole. .

Preferably, one end of the first conductive substrate protruding from the observation hole is provided with a first connector connected to the pressure-sensing detection unit;

One end of the second conductive substrate protruding from the observation hole is provided with a second connector connected to the pressure-sensitive detection unit.

Preferably, the pressure-sensitive induction unit further includes a mounting substrate on which the first conductive portion and the second conductive portion are mounted; the mounting substrate is disposed in the air gap and is along the axial direction of the stator extending, the length of which is compatible with the first conductive part and the second conductive part;

The first conductive portion and the second conductive portion are vertically arranged with the mounting substrate.

Preferably, the pressure-sensitive anti-collision device further includes a fixing component for fixing the pressure-sensitive induction unit on the stator.

Preferably, the alarm unit includes an alarm or an alarm light.

Preferably, the pressure-sensitive anti-collision device further includes an adjustment component for adjusting the distance between the outer side wall of the stator and the inner side wall of the armature.

Implementing the pressure-sensitive anti-collision device of the present invention has the following beneficial effects: the pressure-sensitive anti-collision device can set the pressure-sensitive sensing unit in the air gap and set the pressure-sensitive detection unit in the observation unit. The hole is on the opposite side of the air gap, and is connected to the alarm unit and the pressure-sensing sensing unit, so that when the pressure-sensing detection unit detects that the pressure-sensing sensing unit senses pressure, an alarm command is output to the alarm unit, and the alarm The unit sends an alarm signal to prompt the operator to adjust the distance between the outer side wall of the stator and the inner side wall of the armature, so as to prevent the collision between the stator and the armature, improve the safety of pulling out the stator, and save labor costs and reduce 4 people observing the gap.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments, in which:

Fig. 1 is the installation schematic diagram of the pressure-sensitive anti-collision device of the present invention;

Fig. 2 is the side view of the pressure-sensitive anti-collision device of the present invention of Fig. 1;

3 is a schematic structural diagram of the pressure-sensitive anti-collision device of the present invention;

Fig. 4 is the partial structure schematic diagram of the pressure-sensitive anti-collision device of the present invention;

FIG. 5 is a top view of the pressure-sensitive anti-collision device of FIG. 4 according to the present invention.

Detailed ways

In order to have a clearer understanding of the technical features, objects and effects of the present invention, the specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

1 to 5 show a preferred embodiment of the pressure-sensitive anti-collision device of the present invention. The pressure-sensitive anti-collision device can be used for maintenance of the exciter 100 . The exciter 100 includes an armature 101 and a stator 102, which can prevent the armature 101 from colliding with the stator 102 when the exciter 100 is overhauled and the stator 102 is pulled out of the armature 101, and the outer wall of the stator 102 and the armature 102. A gap is left between the inner side walls of the 101 to form an air gap 103 ; the air gap 103 is opposite to the observation hole 1021 provided on the end face of the stator 102 away from the armature 101 . By adopting the pressure-sensitive anti-collision device, there is no need for the operator to observe the observation hole in real time, which can save labor costs, and can reliably detect collision and remind the operator to adjust the distance in advance through real-time alarm, so that the pull-through stator can be improved. 102 safety to avoid equipment damage.

As shown in FIGS. 1 to 5 , the pressure-sensitive anti-collision device includes a pressure-sensitive sensing unit 210 , a pressure-sensitive detection unit 220 and an alarm unit; the pressure-sensitive sensing unit 210 is arranged in the air gap 103 , and when the stator 102 faces the The armature 101 moves, and the pressure sensing unit 210 can sense the change of the pressure exerted by the stator 102 . The pressure sensing unit 220 is disposed on the side of the observation hole 1021 opposite to the air gap 103 , and is connected to the pressure sensing unit 210 , and can be used to detect whether the pressure sensing unit 210 senses pressure. The alarm unit is connected to the pressure-sensing detection unit 220, which can be used to output an alarm signal to prompt the operator to adjust the distance between the stator 102 and the armature 101, so as to improve the safety of pulling through the stator 102 and avoid Equipment damage. When the pressure sensing unit 210 detects that the pressure sensing unit 210 senses pressure, it outputs an alarm command to the alarm unit, and the alarm unit sends an alarm signal, thereby facilitating the operator to adjust the stator 102 and the armature 101 in advance The distance between them keeps the size of the air gap 103 within the set range.

Further, the pressure-sensitive sensing unit 210 includes a mounting substrate 211 , a first conductive portion 212 , a second conductive portion 213 , and an elastic insulating portion; the mounting substrate 211 can supply the first conductive portion 212 and the second conductive portion 213 Install. The first conductive portion 212 is disposed in the air gap 103 and extends along the axial direction of the stator 102 ; the second conductive portion 213 is disposed in the air gap 103 , which is separated from the first conductive portion 212 and Arranged side by side and extending along the axial direction of the stator 102 , in this embodiment, the first conductive portion and the second conductive portion are arranged in parallel, and the first conductive portion and the second conductive portion can be installed under the stator 102 . Press and contact, so as to achieve conduction. The first conductive portion 212 and the second conductive portion 213 are connected to the pressure-sensitive detection unit 220. When the distance between the outer side wall of the stator 102 and the inner side wall of the armature 101 is less than a set distance, the first conductive portion 212 and the second conductive part 213 are connected to form a pressure-sensitive signal output to the pressure-sensitive detection unit 220 , and the pressure-sensitive detection unit 220 receives the pressure-sensitive signal and outputs an alarm command to the alarm unit. The elastic insulating portion is disposed between the first conductive portion 212 and the second conductive portion 213; when the air gap size is within a set range, the first conductive portion 212 and the second conductive portion 213 can be Resilient insulation separates, enabling disconnection.

In this embodiment, the mounting substrate 211 is disposed in the air gap 103, and is disposed along the axial direction of the stator 102, and its length is adapted to the first conductive portion 212 and the second conductive portion 213, Its width is greater than the distance from the top surface of the first conductive portion 212 to the bottom surface of the second conductive portion 213 . In this embodiment, the mounting substrate 211 may be an insulating substrate, specifically, it may be a plastic plate, a ceramic plate, or the like. The sidewalls of the first conductive portion 212 and the second conductive portion 213 are connected to the mounting substrate 211 , and the first conductive portion 212 and the second conductive portion 213 are perpendicular to the mounting substrate 211 . Of course, it can be understood that in other embodiments, the mounting substrate 211 can be omitted.

Specifically, in this embodiment, the first conductive portion 212 may be elongated. The first conductive portion 212 may be connected to a first conductive substrate; the first conductive substrate may be a copper plate. Of course, it is understood that in other embodiments, the first conductive substrate may not be limited to a copper plate. The length of the first conductive portion is adapted to the length of the air gap 103 , specifically, the length of the first conductive substrate is greater than the height of the stator 102 , and one end of the first conductive substrate can pass through the observation hole 1021 set to connect with the pressure-sensing detection unit 220 . In this embodiment, the end of the first conductive substrate protruding from the observation hole 1021 is provided with a first connector 2121 , and the first connector 2121 can be connected to the pressure sensing detection unit 220 .

Specifically, in this embodiment, the second conductive portion 213 may be a long strip. The second conductive portion 213 may be connected to a second conductive substrate; the second conductive substrate may be a copper plate. Of course, it is understood that in other embodiments, the second conductive substrate may not be limited to a copper plate. The length of the first conductive portion is adapted to the length of the air gap 103 , specifically, the length of the second conductive substrate is greater than the height of the stator 102 , and one end of the second conductive substrate can pass through the observation hole 1021 set to connect with the pressure-sensing detection unit 220 . In this embodiment, the end of the second conductive substrate protruding from the observation hole 1021 is provided with a second connector 2131 , and the second connector 2131 can be connected to the pressure-sensing detection unit 220 . When the stator 102 presses down the first conductive substrate, the first conductive substrate can be connected to the second conductive substrate, and the pressure-sensitive detection unit 220 can detect the difference between the first conductive substrate and the second conductive substrate. On signal.

In this embodiment, the distance from the side wall of the first conductive portion 212 opposite to the stator 102 to the side wall of the second conductive portion 213 opposite to the stator 102 is less than or equal to the distance from the outer side wall of the stator 102 to The distance between the inner side walls of the armature 101 is set so that the pressure-sensitive induction unit 210 is arranged in the air gap 103 .

Specifically, in this embodiment, the elastic insulating portion includes at least two rows of elastic insulating components; the at least two rows of elastic insulating components are mounted on the mounting substrate 211 and are arranged on the first conductive portion 212 and the second conductive portion 212 The conductive parts 213 are arranged side by side along the circumferential direction of the stator 102 . The at least two rows of elastic insulating assemblies may include two rows of elastic insulating assemblies or multiple rows of elastic insulating assemblies. In this embodiment, specifically, the at least two rows of elastic insulating assemblies include two rows of elastic insulating assemblies. By arranging at least two rows of elastic insulating components, when the distance between the stator 102 and the armature 101 is adjusted to a set distance, the first conductive portion 212 and the second conductive portion 213 can be reset easily.

In this embodiment, each row of elastic insulating components includes a plurality of elastic insulating members 214 that are separated and arranged side by side; the elastic insulating members can be springs, sponge blocks, foam blocks, rubber sheets, etc. made of insulating materials, preferably, In this embodiment, the elastic insulating member can be a rubber plate, and the first conductive portion 212 and the second conductive portion 213 can maintain a distance of 0.6 mm under the action of the elastic insulating member when the first conductive portion 212 and the second conductive portion 213 are not pressed, so that the The first conductive portion 212 and the second conductive portion 213 remain disconnected. In this embodiment, the first side of each elastic insulating member 214 is in contact with the first conductive portion 212 , and the second side is in contact with the second conductive portion 213 . The elastic insulating member can separate the first conductive portion 212 and the second conductive portion 213 , and facilitate the reset of the first conductive portion 212 and the second conductive portion 213 .

In this embodiment, the elastic insulating members 214 of the two adjacent rows of elastic insulating assemblies are staggered. The distance between two adjacent elastic insulating members 214 in each row of elastic insulating assemblies may be greater than the length of the elastic insulating members 214 . The region between the two adjacent elastic insulating members 214 forms a conduction region, so that the first conductive portion 212 and the second conductive portion 213 are connected to each other. With this arrangement, it can ensure that when no extrusion occurs, the first conductive part 212 and the second conductive part 213 are disconnected, and when extrusion occurs, no matter where the extrusion point is, the first conductive part 213 Both the portion 212 and the second conductive portion 213 can conduct conduction through the conduction region. It can be understood that, in some other embodiments, the elastic insulating components are not limited to the arrangement of staggered arrangement.

Further, in this embodiment, the pressure-sensing detection unit 220 may be disposed on the side of the stator 102 where the observation hole 1021 is provided, and the pressure-sensing detection unit 220 may be a varistor. It can be understood that, in other embodiments, the pressure-sensitive detection unit 220 is not limited to a piezoresistor.

Further, in some other embodiments, the pressure-sensitive anti-collision device further includes a fixing component 230, and the fixing component 230 can be used to fix the pressure-sensitive induction unit 210 on the stator 102, and the fixing component 230 can be A fixing rope, one end of the fixing rope is connected with the mounting substrate 211 and the other end is connected with the stator 102 , which can be used to fix the pressure-sensitive induction unit 210 in the air gap. Of course, it can be understood that in other embodiments, the fixing assembly 230 is not limited to fixing ropes.

Further, in this embodiment, the alarm unit may be an alarm device. The alarm can be connected with the pressure-sensing detection unit, and can receive an alarm instruction generated and output by the pressure-sensing detection unit and send an alarm signal when the pressure-sensing detection unit detects that the pressure-sensing sensing unit senses pressure, In order to prompt the operator to stop pulling through the stator, adjust the trolley that pulls through the stator to avoid collision and equipment damage. In this embodiment, the alarm signal may be an alarm sound. Of course, it can be understood that in some other embodiments, the alarm device may be omitted, and the photoelectric anti-collision device may include other alarm devices such as alarm lights.

Further, in this embodiment, the pressure-sensitive anti-collision device further includes an adjustment component, and the adjustment component can be used to adjust the distance between the outer side wall of the stator 102 and the inner side wall of the armature 101, so as to maintain the The air gap size is within the set range. Specifically, in this embodiment, the adjusting assembly may be a trolley connected with the stator 102 to drive the stator 102 to move. Of course, it can be understood that in other embodiments, the adjustment assembly is not limited to a trolley. Of course, it can be understood that, in other embodiments, the adjustment assembly is not limited to the trolley, and in other embodiments, the adjustment assembly can be omitted, and it can be adjusted manually.

It can be understood that the above embodiments only represent the preferred embodiments of the present invention, and the descriptions thereof are specific and detailed, but should not be construed as a limitation on the scope of the patent of the present invention; In other words, without departing from the concept of the present invention, the above-mentioned technical features can be freely combined, and some deformations and improvements can be made, and these all belong to the protection scope of the present invention; All equivalent transformations and modifications made shall fall within the scope of the claims of the present invention.

Claims (10)

1. A pressure-sensitive anti-collision device is used for drawing a stator (102) from an armature (101) in the process of maintenance of an exciter (100), and a gap is reserved between the outer side wall of the stator (102) and the inner side wall of the armature (101) to form an air gap (103); the air gap (103) is arranged opposite to a viewing hole (1021) arranged on an end face of the stator (102) remote from the armature (101),

the pressure-sensitive anti-collision device comprises a pressure-sensitive sensing unit (210), a pressure-sensitive detecting unit (220) and an alarming unit; the pressure sensing unit (210) is arranged in the air gap (103); the pressure detection unit (220) is arranged on one side of the observation hole (1021) opposite to the air gap (103), is connected with the pressure sensing unit (210) and the alarm unit to detect whether the pressure sensing unit (210) senses pressure, and outputs an alarm instruction to the alarm unit when the pressure sensing unit (210) senses pressure, and the alarm unit sends an alarm signal.

2. The pressure-sensitive crash prevention apparatus according to claim 1, wherein the pressure-sensitive sensing unit (210) includes a first conductive portion (212) provided in the air gap (103) to extend in an axial direction of the stator (102), a second conductive portion (213) provided in the air gap (103) to be separated from the first conductive portion (212) and provided side by side and to extend in the axial direction of the stator (102), and an elastic insulating portion provided between the first conductive portion (212) and the second conductive portion (213);

the first conductive part (212) and the second conductive part (213) are connected with the pressure sensing detection unit (220), when the distance between the outer side wall of the stator (102) and the inner side wall of the armature (101) is smaller than a set distance, the first conductive part (212) and the second conductive part (213) are conducted to form a pressure sensing signal and output the pressure sensing signal to the pressure sensing detection unit (220), and the pressure sensing detection unit (220) receives the pressure sensing signal and outputs an alarm instruction to the alarm unit.

3. The pressure sensitive crash shield of claim 2 wherein said resilient insulation comprises at least two rows of resilient insulation elements;

the at least two rows of elastic insulation assemblies are arranged side by side along the circumferential direction of the stator (102), and each elastic insulation assembly comprises a plurality of elastic insulation pieces (214) which are separated and arranged side by side; each of said elastic insulators (214) having a first side in abutment with said first conductive portion (212) and a second side in abutment with said second conductive portion (213);

the elastic insulating parts (214) of the two rows of elastic insulating assemblies which are adjacently arranged are staggered.

4. The pressure sensitive crash guard of claim 2 wherein the distance from the side wall of the first conductive portion (212) opposite the stator (102) to the side wall of the second conductive portion (213) opposite the stator (102) is less than or equal to the set distance from the outer side wall of the stator (102) to the inner side wall of the armature (101).

5. The pressure sensitive crash shield of claim 2 wherein said first conductive portion (212) comprises an elongated first conductive substrate; the second conductive portion (213) includes an elongated second conductive substrate;

the lengths of the first conductive substrate and the second conductive substrate are larger than the length of the air gap (103) and matched with each other, and one ends of the first conductive substrate and the second conductive substrate penetrate out of the observation hole (1021) respectively.

6. The pressure-sensitive crash protection device of claim 5, wherein the end of said first conductive substrate protruding from said viewing port (1021) is provided with a first contact (2121) connected to said pressure-sensitive detection unit (220);

one end of the second conductive substrate, which extends out of the observation hole (1021), is provided with a second connector (2131) connected with the pressure sensing detection unit (220).

7. The pressure-sensitive crash protection device according to claim 2, wherein the pressure-sensitive sensing unit (210) further comprises a mounting substrate (211) on which the first conductive portion (212) and the second conductive portion (213) are mounted; the mounting substrate (211) is arranged in the air gap (103) and extends along the axial direction of the stator (102), and the length of the mounting substrate is matched with the first conductive part (212) and the second conductive part (213);

the first conductive part (212) and the second conductive part (213) are disposed perpendicular to the mounting substrate (211).

8. The pressure sensitive crash shield as recited in claim 1, further comprising a securing assembly (230) securing the pressure sensitive unit (210) to the stator (102).

9. The pressure sensitive crash shield apparatus of claim 1 wherein said alarm unit comprises an alarm or an alarm light.

10. The pressure sensitive crash shield as recited in claim 1, further comprising an adjustment assembly that adjusts a distance between an outer sidewall of the stator (102) and an inner sidewall of the armature (101).

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