CN111375982A

CN111375982A - Automatic cold-charging device and method for insert positioning pin of in-pile component

Info

Publication number: CN111375982A
Application number: CN201811626404.6A
Authority: CN
Inventors: 李建; 皮兴刚; 孔丽朵; 苟锐; 黄昊; 黄小亮; 杨凯淇
Original assignee: Xuancui Liang
Current assignee: Xuancui Liang; China Nuclear Industry Fifth Construction Co Ltd
Priority date: 2018-12-28
Filing date: 2018-12-28
Publication date: 2020-07-07
Anticipated expiration: 2038-12-28
Also published as: CN111375982B

Abstract

The invention aims to provide an automatic cold-charging device for an insert positioning pin of a reactor internals, comprising: the linear driving unit comprises a driving part and a push rod, the driving part is configured to drive the push rod to advance and retreat along the linear direction, and the push rod is used for pushing the positioning pin; and a guide unit for supporting the positioning pin and allowing the positioning pin to slide, having a guide portion engaged with the positioning pin to slide the positioning pin in a linear direction. The invention also provides an automatic cold-mounting method for the insert positioning pin of the in-pile component. The automatic cold-loading device and the method convert the manual operation of cold loading of the insert positioning pin of the reactor internals into mechanical automatic operation.

Description

Automatic cold-charging device and method for insert positioning pin of in-pile component

Technical Field

The invention relates to an automatic cold-mounting device for an insert positioning pin of an in-reactor component, and also relates to an automatic cold-mounting method for the insert positioning pin of the in-reactor component, which is mainly applied to cold-mounting of the insert positioning pin of the in-reactor component of a nuclear power station.

Background

At present, in the field of nuclear power station construction, cold assembly of a positioning pin of an insert of a reactor internals is to soak the positioning pin in liquid nitrogen (-196 ℃) for a period of time, such as about 30 minutes, then take out the positioning pin from the liquid nitrogen, and then an operator wears thick sheepskin gloves to manually install the positioning pin. The manual installation mode can cause that the installation quality of the positioning pin cannot be intuitively and effectively controlled, the successful installation of the positioning pin in hundreds percent cannot be ensured, and the quality problems of dead locking of the positioning pin, poor installation in-place size and the like easily occur. Moreover, because the insert positioning pin hole into which the positioning pin is inserted is a blind hole, and the surface of the frozen positioning pin is frosted rapidly, the vent groove is blocked, so that the phenomena of air resistance and pin springing are easy to occur when the positioning pin is manually installed, the installation quality of the positioning pin is influenced, and certain hidden danger of the installation quality exists. In addition, since liquid nitrogen reacts strongly with an object having a higher temperature than that of liquid nitrogen, the positioning pin is likely to be splashed and frozen when manually attached.

In addition, generally, each insert of the nuclear power plant unit has 8 inserts, each insert has 2 locating pins, total 16 locating pins, the diameter and the length of each locating pin are determined according to the size of a pin hole, each locating pin is installed in the pin holes of the insert and the radial supporting seat, and after the locating pin is installed, the size of the end surface of the locating pin from the surface of the insert is required to meet the design requirement, so that the locating pin and the insert can be welded together. Each positioning pin hole is formed by matching a field insert with a radial support seat drill and a radial support seat hinge to form a blind hole, the hole depth and the hole diameter should meet the design requirements, the positioning pin hole and the positioning pin are in interference fit, and the interference magnitude should meet the design requirements.

The invention is designed to avoid the problems of manual installation of the locating pin of the insert of the reactor internals such as 'spring pin' during cold loading of the locating pin.

Disclosure of Invention

The invention aims to provide an automatic cold-loading device which can convert manual operation of cold-loading of a positioning pin of an insert of a reactor internals into mechanical automatic operation.

The invention provides an automatic cold-charging device for an insert positioning pin of a reactor internals, comprising: the linear driving unit comprises a driving part and a push rod, the driving part is configured to drive the push rod to advance and retreat along a linear direction, and the push rod is used for pushing the positioning pin; and a guide unit for supporting the positioning pin and allowing the positioning pin to slide, having a guide portion engaged with the positioning pin to slide the positioning pin in the linear direction.

In one embodiment, the guide portion is an arc-shaped inner peripheral surface provided in contact fit with an outer peripheral surface of the positioning pin.

In one embodiment, the guide unit includes an adjustment fastener penetrating into the guide portion; the guide unit further includes a fixing portion to which the guide portion is connected by the adjustment fastener, and by which a position of the guide portion with respect to the fixing portion is adjustable.

In one embodiment, the top end of the ejector pin comprises a gauge portion that is accessible to a pin hole that receives the locating pin, the gauge portion having a length that is related to the design dimension of the locating pin at the location of the pin hole.

In one embodiment, the apparatus further comprises a pressure detection unit provided to a top end surface of the jack.

In one embodiment, the apparatus further comprises: the clamping unit is arranged to be linked with the ejector rod and comprises a clamping jaw which is arranged to be loosened or clamped; and when the pressure value detected by the pressure detection unit reaches a preset value, the controller instructs the clamping jaw to clamp the positioning pin according to a detection signal of the pressure detection unit and controls the linear driving unit to perform retraction.

In one embodiment, the apparatus further comprises a support plate parallel to the insert, the bottom of the linear drive unit being mounted to the support plate.

In one embodiment, the device further comprises a supporting tool, the supporting tool comprises a mounting plate and a cross beam, one surface of the mounting plate is attached to the surface of the insert, the other surface of the mounting plate is connected with one end surface of the cross beam, and the other end surface of the cross beam is connected with the surface of the supporting plate.

In one embodiment, the support plate is provided with a plurality of mounting holes, the linear driving unit is mounted on the support plate by coupling fasteners to the mounting holes, and the guide unit is fixed to a driving part of the linear driving unit.

In one embodiment, the fastener is movably matched with the mounting hole, so that the mounting position of the linear driving unit can be adjusted.

The invention also provides an automatic cold-charging method for the insert positioning pin of the reactor internals, which adopts the automatic cold-charging device for the insert positioning pin of the reactor internals and comprises the following steps: arranging the insert on the radial support seat; aligning the ejector rod of the linear driving unit with a pin hole of the insert block, which is to accommodate a positioning pin; adjusting the guide portion of the guide unit so that the positioning pin to be placed is aligned with the pin hole; and placing the cooled and diameter-reduced positioning pin on the guide part, pushing the positioning pin through the ejector rod, and controlling the linear motion speed output by the driving part so as to avoid the phenomenon of air resistance or elastic pin.

In one embodiment, the guide portion is an arc-shaped inner circumferential surface, and the guide portion of the guide unit is adjusted by horizontally aligning a bottom of the guide portion with a bottom of the pin hole.

In one embodiment, the pressure value between the ejector rod and the positioning pin is detected, and when the pressure value reaches a preset value, the positioning pin is withdrawn from the pin hole.

By adopting the automatic cold-loading device and method for the insert positioning pin of the reactor internals, the positioning pin installation during the cold loading of the insert positioning pin of the reactor internals can be converted from manual operation into mechanical automatic operation, thereby effectively reducing the risk of manual installation, improving the installation level and efficiency, reducing the manual labor intensity and simultaneously preventing the liquid nitrogen splashing and frostbite accidents caused by improper protection of operators;

in addition, the aim of installing the positioning pin at a constant speed can be easily realized, and the phenomena of air resistance and pin springing caused by uneven speed in manual installation are avoided;

the automatic cold-mounting device for the insert positioning pin of the in-pile component, particularly the boss on the top of the ejector rod, can ensure that the end surface of the positioning pin has consistent size from the surface of the insert, thereby meeting the size requirement and avoiding the occurrence of size out-of-tolerance;

in addition, a pressure detection unit and a positioning pin clamping and returning mechanism are added, so that the risks that the positioning pin is blocked, is not installed in place, cannot be taken out in time and the like can be effectively avoided.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principle of the invention. In the drawings:

fig. 1 is a perspective view of an automated cold-charging device for a locating pin of an insert of a reactor internals.

FIG. 2 is another perspective view of the automated cold-fitting apparatus for the locating pin of the insert of the internals.

FIG. 3 is a top view of the automated cold-charging device for the locating pin of the insert of the reactor internals.

FIG. 4 is a side view of the automated cold-charging apparatus for the locating pin of the insert of the internals.

FIG. 5 is a front view of an automated cold-charging apparatus for the locating pins of the internals package inserts.

Fig. 6 is a simplified view of fig. 5 with the clamping device removed.

Detailed Description

The present invention will be further described with reference to the following detailed description and the accompanying drawings, wherein the following description sets forth further details for the purpose of providing a thorough understanding of the present invention, but it is apparent that the present invention can be embodied in many other forms other than those described herein, and it will be readily apparent to those skilled in the art that the present invention may be embodied in many different forms without departing from the spirit or scope of the invention.

For example, a first feature described later in the specification may be formed over or on a second feature, and may include embodiments in which the first and second features are formed in direct contact, and may also include embodiments in which additional features may be formed between the first and second features, such that the first and second features may not be in direct contact. Additionally, reference numerals and/or letters may be repeated in the various examples throughout this disclosure. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. Further, when a first element is described as being coupled or coupled to a second element, the description includes embodiments in which the first and second elements are directly coupled or coupled to each other, as well as embodiments in which one or more additional intervening elements are added to indirectly couple or couple the first and second elements to each other.

As used herein, the terms "a," "an," and/or "the" are not intended to be inclusive in the singular, but rather are intended to be inclusive in the plural, unless the context clearly dictates otherwise. In general, the terms "comprises" and "comprising" merely indicate that steps and elements are included which are explicitly identified, that the steps and elements do not form an exclusive list, and that a method or apparatus may include other steps or elements. Further, it will also be understood that when a layer is referred to as being "between" two layers, it can be the only layer between the two layers, or one or more intervening layers may also be present.

It is noted that these and other figures which follow are merely exemplary and not drawn to scale and should not be considered as limiting the scope of the invention as it is actually claimed. For convenience of description, up-down, left-right, and front-rear directions are defined in the drawings, and expressions of "up", "down", "left", "right", "front", "rear" are used, which are merely for convenience of description and easy understanding, and do not limit the specific directions of the structures. Further, the conversion methods in the different embodiments may be appropriately combined.

Fig. 1, 2, 3, 4 and 5 show an example configuration of the in-stack component insert locating pin automated cold-packing apparatus 100 from different angles, and also show an example configuration of an insert 101, a radial support seat 102, and the like. Note that, in fig. 2, the positioning pin a does not appear to be aligned with the pin hole because the drawing is not drawn in an equal-scale condition, and in fact, when the linear drive unit 1, which will be described later, is mounted there, the positioning pin a is aligned with the pin hole 103.

Two inserts 101 are shown, one on each side and the other on each side, the inserts 101 being arranged on radial supports 102 as described in the background. The following description will be made with respect to only a single insert 101.

An insert surface 101a of the insert 101 (in the drawing, a rear surface of the insert 101, i.e., a surface of the insert 101 on the side opposite to the radial support seat 102) is provided with upper and lower two pin holes 103, and a positioning pin a is to be inserted into the pin holes 103 and received in the pin holes 103.

The automatic cold-loading device 100 for the insert positioning pin of the in-pile component comprises a linear driving unit 1 and a guide unit 2.

The linear driving unit 1 includes a carrier rod 11 and a driving member 12, the driving member 12 is configured to drive the carrier rod 11 to advance and retreat in a linear direction D (i.e., an extending direction of the positioning pin a after the positioning pin a is placed, a hole depth direction of the pin hole 103 into which the positioning pin a is to be inserted, i.e., a front-rear direction in the drawing), and the carrier rod 11 is used to push the positioning pin a. In the illustrated embodiment, the linear driving unit 1 is a cylinder, which may be connected to an air supply device (not shown), and after receiving a working command, the cylinder may provide power to make the driving part 12 drive the ram 11 to advance forward at a predetermined linear motion speed, such as at a constant speed, the top end of the top of the ram 11 abuts against the rear end surface of the positioning pin a (hereinafter referred to as the end surface of the positioning pin a) to push the positioning pin a into the pin hole 103 at a constant speed, and after receiving a finishing command, the linear driving unit performs a retracting action, i.e., stops making the ram 11 advance forward and retract, or makes the ram 11 advance forward by a predetermined distance, and automatically stops and retracts. In another embodiment, the linear drive unit 1 may be in other forms, such as a linear motor or a hydraulic system. The advancing distance of the jack 11 in the linear direction D may be 100mm to 150mm, that is, the stroke of the cylinder as the linear driving unit 1 is 100mm to 150 mm.

The guide unit 2 serves to support the positioning pin a and allow the positioning pin a to slide. The guide unit 2 has a guide portion 21. The guide portion 21 cooperates with the positioning pin a to slide the positioning pin a in the linear direction D. In the illustrated embodiment, the guide portion 21 is an arc-shaped inner peripheral surface that is provided to be in contact fit with the outer peripheral surface of the positioning pin a, so that the positioning pin a can be placed in the space surrounded by the arc-shaped inner peripheral surface, supported by the arc-shaped inner peripheral surface, and guided to slide. The arc-shaped inner peripheral surface as the guide portion 21 may be an arc-shaped inner peripheral surface equal to or smaller than a semicircle, and when the arc-shaped section of the arc-shaped inner peripheral surface is equal to or smaller than a semicircle, the positioning pin a may be relatively easily placed in the space surrounded by the arc-shaped inner peripheral surface from above, and when the arc-shaped section of the arc-shaped inner peripheral surface is larger than a semicircle, the positioning pin a may be inserted from the end side toward the space surrounded by the arc-shaped inner peripheral surface to be placed in the space surrounded by the arc-shaped inner peripheral surface. The diameter of the arc-shaped section constituting the arc-shaped inner peripheral surface may be equal to or larger than the diameter of the positioning pin a, and is preferably slightly larger than the diameter of the positioning pin a. In another embodiment, the guide portion 21 may be in other forms, for example, the guide portion 21 is in the shape of a groove with two arc-shaped sides and a downward concave bottom side when viewed along the straight line direction D, or when the positioning pin a is provided with an exhaust groove extending along the extending direction of the positioning pin a, the guide portion 21 may be provided with a long protrusion extending along the extending direction of the positioning pin a at a position corresponding to the exhaust groove, so as to guide and support the positioning pin a.

The guide unit 2 is lower than the knock rod 11 in the height direction (i.e., the up-down direction in the drawing) so that the knock rod 11 can perform a knock action against the end surface of the position pin a when the position pin a is supported by the arc-shaped inner peripheral surface as the guide portion 21. When the positioning pin a is assembled, an arc-shaped inner peripheral surface as the guide portion 21 in the guide unit 2 may be aligned with the pin hole 103, for example, a bottom of the arc-shaped inner peripheral surface is horizontally aligned with a bottom of the pin hole 103.

The guide unit 2 further comprises a fixing portion 22, the fixing portion 22 is connected with the guide portion 21, and the whole guide unit 2 is fixed on the driving part 12 of the linear driving unit 1 through the fixing portion 21. In the illustrated embodiment, the fixing portion 22 includes a ferrule 221 and a protruding arm 222 that connects the ferrule 221 to the guide portion 21, and the ferrule 221 is fitted over the outer periphery of the driving member 12 to fix the guide unit 2 to the driving member 12 of the linear driving unit 1. In one embodiment, the ferrule 221 (or the guide unit 2) is movable and locked in the linear direction D relative to the linear drive unit 1 (or the drive member 12), for example, in the illustrated embodiment, the ferrule 221 can slide along the outer circumference of the drive member 12, and the ferrule 221 is provided with a set screw, which can be tightened to fix the ferrule 221, i.e., the entire guide unit 2, to the drive member 12. In this way, the position of the guide unit 2 in the linear direction D can be adjusted back and forth, so that the positioning pin a can be supported more favorably.

In the illustrated embodiment, the guide unit 2 includes an adjustment fastener 23, and the adjustment fastener 23 penetrates into the guide portion 21. The guide portion 21 can be connected to the fixing portion 22 (specifically, the projecting arm 222) by adjusting the fastener 23, and by adjusting the fastener 23, the position of the guide portion 21 with respect to the fixing portion 22 can be adjusted, thereby integrally adjusting the height of the guide portion 21, that is, the height of the positioning pin a supported by the guide portion 21, so that the positioning pin a is aligned with the pin hole 103. For example, in the illustrated embodiment, the protruding arm 222 of the fixing portion 22 has a threaded hole, and a threaded hole is also formed at a corresponding position of the guide portion 21, the adjusting fastener 23 passes through the threaded hole in the protruding arm 222 and the threaded hole at the bottom of the guide portion 21, for example, a spacer with a certain thickness may be inserted between the upper surface of the protruding arm 222 and the bottom surface of the guide portion 21, and the adjusting fastener 23 is screwed, so as to raise the height of the guide portion 21 relative to the protruding arm 222. Only one adjustment fastener 23 is shown in the figures, but also more than two adjustment fasteners 23 can be arranged.

In the illustrated embodiment, the guide portion 21 is shorter than the positioning pin a in the linear direction D. This can reduce the contact area of the positioning pin a with the guide portion 21, thereby reducing resistance when the jack 11 pushes the positioning pin a, and in the case where the guide unit 2 includes the adjustment fastener 23, can contribute to more sensitively adjusting the inclination of the positioning pin a.

Fig. 6 is a simplified schematic diagram of a side view in which a clamp unit 4, which will be described later, is omitted. Referring to fig. 6, the tip end (front end in the drawing) of the jack 11 includes a gauge portion 111, the gauge portion 111 can enter the pin hole 103 that accommodates the positioning pin a, and the length of the gauge portion 111 is associated with the design dimension of the position of the positioning pin a in the pin hole 103, that is, the dimension of the end surface of the positioning pin a from the insert surface 101a described in the background art. In the illustrated embodiment, the gauge portion 111 is formed of a small diameter portion at the tip end of the stem 11, the diameter of the small diameter portion is slightly smaller than the diameter of the positioning pin a, and the diameter of the body portion 112 of the stem 11 is slightly larger than the diameter of the positioning pin a. The setting of the gauge portion 111 can facilitate the limiting of the installation depth of the positioning pin a after the positioning pin a is in place, and ensure the dimension of the end surface of the positioning pin a from the insert surface, the small diameter portion as the gauge portion 111 can extend into the pin hole 103, while the main body portion 112 cannot enter the pin hole 103 due to its large dimension, so the length of the small diameter portion as the gauge portion 111 in the linear direction D is the distance between the end surface of the positioning pin a and the insert surface 101a when the positioning pin a is installed, for example, the length of the small diameter portion as the gauge portion 111 can be 3 mm. In another embodiment, the gauge portion 111 may have a tapered shape with gradually changing dimensions, and the front end diameter is larger than the rear end diameter in the drawing, and even the gauge portion 111 may have a non-circular shape, for example, a small diameter portion as the gauge portion 111 in the drawing is not cylindrical but square, as long as the dimension is smaller than the diameter of the positioning pin a.

With continued reference to fig. 6, the automated cold-packing apparatus 100 for an insert positioning pin of an in-stack component further includes a pressure detection unit 3, and the pressure detection unit 3 is provided on a top end surface (i.e., a front end surface in the drawing) of the carrier rod 11. The pressure detecting unit 3 may be a pressure sensor, such as a piezoresistive pressure sensor, a ceramic pressure sensor, or the like. When the linear driving unit 1 is started and the ejector rod 11 pushes the positioning pin a, the pressure detecting unit 3 can detect the pressure at the top end of the ejector rod 11 at any time.

Referring to fig. 1 and 5, the automatic cold-loading device 100 for the insert positioning pin of the in-pile component further comprises a clamping unit 4, the clamping unit 4 is arranged to be linked with the ejector rod 11 and comprises a clamping jaw 41 which is arranged to be loosened or clamped, and the clamping unit 4 moves back and forth along the linear direction D along with the ejector rod 11. For example, the holding jaw 41 includes two left and right jaw members, and can hold the tail portion of the positioning pin a from the left-right direction, for example, at a position about 10mm from the tail end face. For example, the clamping unit 4 may be electrically controlled, and the clamping jaws 41 may be loosened or clamped according to the command signal, for example, by two motors driving the two jaw members to rotate in the respective opening or clamping directions, so as to achieve the clamping or loosening action. The automated cold-loading device 100 for an in-pile component insert positioning pin comprises a controller (not shown in the figure), when the pressure value detected by the pressure detection unit 3 reaches (or exceeds) a preset value, the controller instructs the clamping jaws 41 of the clamping unit 4 to clamp the positioning pin a according to the detection signal of the pressure detection unit 3 (for example, by instructing the two motors to act respectively), and controls the linear driving unit 1 to perform a retraction action, that is, to retract the ejector 11, so that the clamping unit 4 retracts following the ejector 11 in a state of clamping the positioning pin a, and then withdraws the positioning pin a from the pin hole 103. For example, once the pressure value detected by the pressure detection unit 3 reaches a limit value, a clamping signal is sent to the clamping unit 4, the clamping jaw 41 is instructed to clamp the positioning pin a, and an end instruction is sent to the linear driving unit 1, so that the linear driving unit 1 can stop the ejector 11 from pushing forward and retracting. For example, in this process, a predetermined retreat distance may be set, and after the carrier rod 11 retreats by the predetermined retreat distance, the positioning pin a is just positioned on the guide portion 21 of the guide unit 2, so that the clamping jaw 41 of the clamping unit 4 is released, and the positioning pin a is again placed on the guide unit 2 and supported by the guide unit 2. For example, when the gauge portion 111 enters the pin hole 103 and the main body portion 112 of the jack 11 abuts against the insert surface 101a and cannot enter the pin hole 103, if the linear drive unit 1 continues to function, the jack 11 continues to be pushed forward, and eventually, a pressure value detected by the pressure detection unit 3 may reach a preset value, at which time, the linear drive unit 1 stops functioning and the jack 11 retracts, and the positioning pin a has already entered the pin hole 103, and even if the clamping jaw 41 receives a clamping command and clamps, the positioning pin a cannot be pulled back, and therefore, the operation can be smoothly ended.

In the illustrated embodiment, the clamping unit 4 is provided on the top of the carrier rod 11 and is position-adjustably mounted to the carrier rod 11, for example, by means of a waist hole and a fastener.

In the illustrated embodiment, the automated cold-packing device 100 for the positioning pin of the insert of the reactor internals further comprises a support plate 5. The support plate 5 constitutes the support base of the linear drive unit 1. The support plate 5 is parallel to the insert surface 101a and the bottom of the linear drive unit 1 (or, alternatively, the bottom of the drive member 12) is mounted to the support plate 5. The mounting of the linear drive unit 1 with the support plate 5 parallel to the insert surface 101a can be more advantageous in making the ejector pin 11 of the linear drive unit 1 in the ejection direction coincide with the hole depth direction of the pin hole a.

In the illustrated embodiment, the support plate 5 is provided with a plurality of mounting holes 51, and the linear driving unit 1 is mounted on the support plate 5 by connecting the fasteners 52 to the mounting holes 51. Each mounting hole 51 or each set of mounting holes 51 may correspond to a different mounting position of the linear drive unit 1. For example, in the illustrated embodiment, the linear drive unit 1 is attached to the support plate 5 through four attachment holes 51, and a set of the attachment holes 51 corresponds to four attachment holes. Four sets of mounting holes, for example, a first set of mounting holes 51a and a second set of mounting holes 51b, are provided in the support plate 5, so that the positions of a total of four pin holes 103 in the two inserts 101 can be respectively corresponded. In one embodiment, the fastener 52 is movably engaged with the mounting hole 51, so that the mounting position of the linear driving unit 1 can be adjusted, for example, the hole diameter of the mounting hole 51 is larger than the outer diameter of the fastener 52, at which time, the mounting position of the linear driving unit 1 can be finely adjusted, and for example, the mounting hole 51 can be provided in the form of a waist hole according to the mounting requirement, so that the mounting position of the linear driving unit 1 can be adjusted, so that the guide unit 2 connected to the linear driving unit 1 can be aligned with the pin hole 103.

In the illustrated embodiment, the automatic cold-mounting device 100 for the positioning pin of the insert of the reactor internals further comprises a supporting tool 6, and the supporting tool 6 is used for installing a supporting plate 5. The support tool 6 includes a mounting plate 61 and a cross beam 62, one plate surface (front plate surface in the figure) of the mounting plate 61 is attached to the insert surface 101a, the other plate surface (rear plate surface in the figure) of the mounting plate 61 is connected to one end surface (front end surface in the figure) of the cross beam 62, and the other end surface (rear end surface in the figure) of the cross beam 62 is connected to the plate surface (front plate surface in the figure) of the support plate 5. By supporting the tooling 6, it is well ensured that the support plate 5 is parallel to the insert surface 101 a. The cross beam 62 may be, for example, square steel.

The invention also relates to an automatic cold-mounting method for the insert positioning pin of the in-pile component, and the automatic cold-mounting device 100 for the insert positioning pin of the in-pile component comprises the following steps:

1) the insert 101 is arranged on a radial support seat 102.

2) The carrier rod 11 of the linear drive unit 1 is aligned with the pin hole 103 that will receive the positioning pin a.

3) The guide portion 21 of the guide unit 2 is adjusted so that the positioning pin a to be placed is aligned with the pin hole 103 on the insert 101.

In this step, in the illustrated embodiment, the guide portion 21 is an arc-shaped inner peripheral surface, and the guide portion 21 of the guide unit 2 can be adjusted by horizontally aligning the bottom of the guide portion 21 with the bottom of the pin hole 103.

4) The cooled and diameter-reduced (diameter is reduced due to thermal expansion and cold contraction) positioning pin A is placed in the guide part 21, the positioning pin A is pushed by the ejector rod 11, and the linear motion speed output by the driving part 12 is controlled, so that air resistance or pin springing phenomenon is avoided.

In this step, the linear motion speed output by the driving member 12 may be controlled to be, for example, a constant linear motion speed. In addition, the outer peripheral surface of the positioning pin a can be provided with exhaust grooves, for example, three exhaust grooves are uniformly processed in the circumferential direction, which is also beneficial to avoiding air resistance or elastic pin phenomenon.

The automatic cold-mounting method for the insert positioning pin of the reactor internals can further comprise the following steps: and detecting the pressure value between the ejector rod 11 and the positioning pin A (through the pressure detection unit 3), and withdrawing the positioning pin A from the pin hole 103 when the pressure value reaches a preset value.

In one embodiment, for example, the automated cold-packing apparatus 100 for in-pile component insert locating pins as illustrated may include the following more specific steps: after the insert 101 in each direction is cleaned, the left insert 101 and the right insert 101 are fixed on a radial support seat by fasteners such as an upper bolt and a lower bolt in directions; mounting the support tool 6 on the insert surface 101a and the support plate 5 on the support tool 6 with the fastener 104, mounting the linear drive unit 1 on the support plate 5 and connecting a power source (for example, when the linear drive unit 1 is an air cylinder, the power source is an air supply device), wherein the top of the ejector 11 of the linear drive unit 1 has mounted thereon the dedicated pressure detecting unit 3 and the clamping unit 4, the top of the ejector 11 is provided with a gauge portion 111 for limiting the depth, adjusting the position of the linear drive unit 1 so that the center of the ejector 11 coincides with the center of the pin hole 103 accommodating the positioning pin a, adjusting the position height of the guide portion 21, and the like, so that the center of the positioning pin a to be placed on the rear side coincides with the center of the pin hole 103, for example, horizontally aligning the bottom of the arc-shaped inner peripheral surface as the guide portion 21 with the bottom of the pin hole 103, and in the case that, the position of the clamping unit 4 can be adjusted to make the clamping center of the clamping unit 4 consistent with the center of the positioning pin A; after the positioning pin A is ready, the positioning pin A which is cooled by liquid nitrogen and has a reduced diameter is placed on the guide unit 2, the linear driving unit 1 is started, the ejector rod 11 pushes the positioning pin A into the pin hole 103 at a constant speed, and the positioning pin A is installed at a proper position of the pin hole 103 by using the detection tool part 111. If the pressure detection unit 3 detects that the resistance is too large in the ejection process, the controller sends a clamping and returning instruction, including sending the clamping instruction to the clamping unit 4, the clamping unit 4 quickly clamps the tail end of the positioning pin A and sends a returning instruction to the linear driving unit 1, the linear driving unit 1 stops the ejection effect, and the ejector rod 11 returns to the initial position so as to return the positioning pin A; the above steps may be repeated until the other locating pins are installed.

The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can understand that the modifications or substitutions within the technical scope of the present invention are included in the scope of the present invention, and therefore, the scope of the present invention should be subject to the protection scope of the claims.

Claims

1. The utility model provides an automatic cold charge device of heap internals insert locating pin which characterized in that includes:

the linear driving unit comprises a driving part and a push rod, the driving part is configured to drive the push rod to advance and retreat along a linear direction, and the push rod is used for pushing the positioning pin; and

and the guide unit is used for supporting the positioning pin and allowing the positioning pin to slide, and is provided with a guide part which is matched with the positioning pin so as to enable the positioning pin to slide along the linear direction.

2. The automated cold-packing device for the locating pin of the insert of the internals according to claim 1, wherein the guide part is an arc-shaped inner peripheral surface which is arranged to be in contact fit with the outer peripheral surface of the locating pin.

3. The automated cold-charging device for the locating pin of the insert of the internals according to claim 1, wherein the guiding unit comprises an adjusting fastener, and the adjusting fastener penetrates into the guiding part; the guide unit further includes a fixing portion to which the guide portion is connected by the adjustment fastener, and by which a position of the guide portion with respect to the fixing portion is adjustable.

4. The automated cold-packing device for the locating pin of the insert of the internals according to claim 1,

the top end of the ejector rod comprises a detection tool part, the detection tool part can enter a pin hole for accommodating the positioning pin, and the length of the detection tool part is related to the design size of the positioning pin at the position of the pin hole.

5. The automated cold-packing device for the insert positioning pin of the internals according to claim 1, further comprising a pressure detection unit, wherein the pressure detection unit is arranged on the top end surface of the ejector rod.

6. The automated cold-packing device for the locating pin of the insert of the internals according to claim 5, further comprising:

the clamping unit is arranged to be linked with the ejector rod and comprises a clamping jaw which is arranged to be loosened or clamped; and is

And when the pressure value detected by the pressure detection unit reaches a preset value, the controller instructs the clamping jaw to clamp the positioning pin according to a detection signal of the pressure detection unit and controls the linear driving unit to perform retraction.

7. The automated cold-packing device for the locating pin of the insert of the in-pile component according to claim 1, further comprising a support plate, wherein the support plate is parallel to the insert, and the bottom of the linear driving unit is mounted on the support plate.

8. The automatic cold-charging device for the insert positioning pin of the in-pile component according to claim 7, further comprising a supporting tool, wherein the supporting tool comprises a mounting plate and a cross beam, one plate surface of the mounting plate is attached to the surface of the insert, the other plate surface of the mounting plate is connected with one end surface of the cross beam, and the other end surface of the cross beam is connected with the plate surface of the supporting plate.

9. The automated cold-assembling device for the locating pin of the insert of the internal component according to claim 7, wherein a plurality of mounting holes are formed on the supporting plate, the linear driving unit is mounted on the supporting plate by connecting fasteners with the mounting holes, and the guiding unit is fixed on a driving part of the linear driving unit.

10. The automated cold-fitting device for the locating pin of the insert of the internals according to claim 9, wherein the fastener is movably engaged with the mounting hole, so that the mounting position of the linear drive unit can be adjusted.

11. An automatic cold-charging method for an insert positioning pin of a reactor internals, which adopts the automatic cold-charging device for the insert positioning pin of the reactor internals as claimed in any one of claims 1 to 10, and is characterized by comprising the following steps:

arranging the insert on the radial support seat;

aligning the ejector rod of the linear driving unit with a pin hole of the insert block, which is to accommodate a positioning pin;

adjusting the guide portion of the guide unit so that the positioning pin to be placed is aligned with the pin hole;

and placing the cooled and diameter-reduced positioning pin on the guide part, pushing the positioning pin through the ejector rod, and controlling the linear motion speed output by the driving part so as to avoid the phenomenon of air resistance or elastic pin.

12. The automated cold-fitting method for an insert positioning pin of a internals package according to claim 11, wherein the guide portion is an arc-shaped inner peripheral surface, and the guide portion of the guide unit is adjusted by horizontally aligning the bottom of the guide portion with the bottom of the pin hole.

13. The automated cold-fitting method for the locating pin of the insert of the internals according to claim 11, wherein a pressure value between the ejector rod and the locating pin is detected, and when the pressure value reaches a preset value, the locating pin is withdrawn from the pin hole.