CN115762818A - Plunger, reaction device and nuclear reactor - Google Patents

Abstract

The invention relates to the technical field of nuclear reactors and provides a plunger, a reaction device and a nuclear reactor. The plunger is used for connecting the mounting plate and the bar, the mounting plate is provided with a threaded through hole, and the plunger comprises a first threaded section used for being connected with the threaded through hole and a connecting section used for being connected with the bar; the plunger is provided with a flow channel hole and a communication hole, the flow channel hole penetrates through one end, provided with a first thread section, of the plunger and extends towards the connecting section, the flow channel hole is used for being communicated with the space of one side, far away from the connecting section, of the mounting plate, the communication hole is formed in the side wall of the plunger and is communicated with the flow channel hole, and the communication hole is used for being communicated with the space of one side, close to the connecting section, of the mounting plate. Heat transfer medium can pass the mounting panel through runner hole and the intercommunicating pore on the plunger to need not trompil on the mounting panel and supply the heat transfer medium circulation, and then can be at the position installation rod that originally needs the trompil, increased the installation quantity of rod, improved reaction unit's heating effect.

Description

Plunger, reaction device and nuclear reactor

Technical Field

The invention relates to the technical field of nuclear reactors, in particular to a plunger, a reaction device and a nuclear reactor.

Background

In the prior art, a reactor of a nuclear reactor or a reactor for simulating a nuclear reaction simulation test of the nuclear reactor generally comprises a bar and a mounting plate. In contrast, in a reactor of a nuclear reactor, the rods are fuel rods. In the reaction apparatus for performing the nuclear reaction simulation test, the rod material is an electric heating rod.

The mounting plates are arranged in a pair, a space is reserved between the mounting plates, and a reaction space capable of containing the bar is formed in the space between the two mounting plates. The two ends of the bar are respectively connected with a pair of mounting plates. The pair of mounting plates are respectively provided with an inlet hole for the heat exchange medium to enter and an outlet hole for the heat exchange medium to exit. In the operation process of the reaction device, the heat exchange medium enters the reaction space from the inlet hole, flows through the gap between the bars, exchanges heat with the outer wall of the bars and is finally discharged from the discharge hole.

Since the rods are mounted on the mounting plate, the size of the mounting plate determines the size of the reaction space and the number of rods that can be mounted. In the case that the size of the installation plate is determined, the inlet holes and the outlet holes provided on the installation plate inevitably occupy the installation space of the rods, resulting in a reduction in the number of rods in the reaction space and a reduction in the heating effect of the reaction apparatus.

Disclosure of Invention

The invention provides a plunger, a reaction device and a nuclear reactor, which are used for solving the defect that in the prior art, the number of bars in a reaction space is reduced because holes in a mounting plate of the reaction device occupy the mounting space of the bars, and the effect of increasing the number of the bars in the reaction space is realized.

The invention provides a plunger which is used for connecting a mounting plate and a bar, wherein the mounting plate is provided with a threaded through hole, and the plunger comprises a first threaded section and a connecting section, wherein the first threaded section is used for being connected with the threaded through hole, and the connecting section is used for being connected with the bar;

the plunger is equipped with runner hole and intercommunicating pore, the runner hole link up the plunger is equipped with the one end of first screw thread section and to the linkage segment extends, the runner hole be used for with the mounting panel is kept away from the space intercommunication of one side of linkage segment, the intercommunicating pore is established on the lateral wall of plunger and with the runner hole intercommunication, the intercommunicating pore be used for with the mounting panel is close to the space intercommunication of one side of linkage segment.

According to the plunger provided by the invention, the plunger further comprises an end head, the end head is connected with one end, far away from the connecting section, of the first thread section, the flow passage hole penetrates through the end head, the sectional area of the end head is larger than that of the first thread section, and the end head is used for abutting against one side, far away from the connecting section, of the mounting plate.

According to the plunger provided by the invention, the inner wall of one end, close to the end head, of the flow passage hole is provided with a polygonal hole;

and/or the outer side wall of the end head is provided with at least one pair of planes which are parallel to each other.

According to the plunger provided by the invention, the plunger further comprises a collar, the collar is arranged between the connecting section and the first thread section, one end of the collar is used for abutting against the mounting plate, and the other end of the collar is used for abutting against the bar material.

According to the plunger provided by the invention, one end of the connecting section, which is far away from the first thread section, is provided with a polygonal hole;

and/or the outer side wall of the collar is provided with at least one pair of planes which are parallel to each other.

According to the plunger provided by the invention, the connecting section is a polished rod section and is used for extending into the unthreaded hole of the rod material.

According to the plunger provided by the invention, the connecting section is a second thread section and is used for being connected with the thread inner hole of the bar.

According to the plunger provided by the invention, the communication hole is a long hole extending along the length direction of the plunger;

and/or the communication holes are distributed along the circumferential direction of the plunger.

The invention also provides a reaction device which comprises an installation plate, a bar and the plunger, wherein the bar is connected with the installation plate through the plunger.

According to the reaction device provided by the invention, the bar material is a fuel rod or an electric heating rod.

The reaction device provided by the invention further comprises a detection device, wherein the detection device is connected with the electric heating rod and used for detecting parameter information of the electric heating rod, the runner hole of the plunger is arranged in a penetrating manner, the detection device is arranged at one end, close to the connecting section, of the runner hole, and a cable of the detection device is led out from the runner hole.

The invention also provides a nuclear reactor comprising a reactor apparatus as described above.

The plunger provided by the invention is connected with the mounting plate through the first thread section, the connecting section is connected with the bar, so that the connection between the bar and the mounting plate can be completed. Meanwhile, one end, far away from the connecting section, of the first thread section of the plunger is provided with a flow channel hole, and the flow channel hole extends towards the connecting section and is communicated with the space on one side, far away from the connecting section, of the mounting plate. The plunger is further provided with a communication hole for communicating the flow passage hole and a space of the mounting plate on a side close to the connection section, so that the heat exchange medium can pass through the mounting plate through the flow passage hole and the communication hole in the plunger.

So set up, heat transfer medium can pass the mounting panel through flow channel hole and the intercommunicating pore on the plunger to need not the trompil on the mounting panel and supply the heat transfer medium circulation, and then can be at the position installation rod that originally needs the trompil, increased the installation quantity of rod, improved reaction unit's heating effect, solved among the prior art trompil on the mounting panel and caused occupation to rod installation space, lead to the problem that rod installation quantity reduces.

Simultaneously, owing to need not to supply the heat transfer medium circulation at the trompil on the mounting panel, the trompil quantity of mounting panel is still less, consequently can improve the structural strength of mounting panel. In addition, the installation plate can be reduced in volume due to no need of the opening, so that the structure of the reaction device is more compact.

Meanwhile, as the first thread section of the plunger is in threaded connection with the threaded through hole of the mounting plate, at least part of the hole opening of the communication hole can enter the threaded through hole when the plunger moves axially along the threaded through hole by screwing the plunger. The hole wall of the threaded through hole can cover part of the hole openings of the communication hole, so that the through-flow section of the flow channel of the heat exchange medium is reduced, and the effect of adjusting the flow of the heat exchange medium is achieved.

In addition, the reaction device in the prior art has the advantages that the distance between each bar in the reaction space and the opening is different, the heat dissipation effect of the bars close to the opening is good, the heat dissipation effect of the bars far away from the opening is relatively poor, the heating capacity of each bar cannot be fully utilized, and the heating rate and the heating effect of the reaction device are limited. The plunger piston is connected with the bar and the mounting plate, so that the problem that the distance between the bar and the opening is different does not exist, the plunger piston corresponding to each bar can be used for circulating a heat exchange medium, and the heat exchange medium flows through the outer surface of each bar for heat exchange. So, heat transfer medium can carry out the heat transfer with every rod to make full use of every rod's heating power can improve reaction unit's heating rate and heating effect.

The reactor and the nuclear reactor provided by the invention comprise the plunger, so that all the advantages of the plunger are simultaneously included.

Drawings

In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic illustration of a first plunger provided in some embodiments of the present invention;

FIG. 2 is a top view of the plunger shown in FIG. 1;

FIG. 3 is a schematic diagram of a second plunger provided in some embodiments of the present invention;

FIG. 4 is a top view of the plunger shown in FIG. 3;

FIG. 5 is a schematic diagram of the structure of a reaction apparatus provided in some embodiments of the present invention;

FIG. 6 is an enlarged view of a portion of FIG. 5 at I;

FIG. 7 is an enlarged view of a portion of FIG. 5 at II;

FIG. 8 is a schematic structural view of a first shell of the enclosure provided in some embodiments of the invention;

FIG. 9 is a schematic structural view of a second shell of the enclosure provided in some embodiments of the invention;

fig. 10 is a schematic structural view of a manifold hub provided in some embodiments of the present invention;

fig. 11 is a partial enlarged view of fig. 5 at iii.

Reference numerals:

1. a plunger; 101. a first thread segment; 102. a connecting section; 103. a flow passage hole; 104. a communicating hole; 105. a tip; 106. a polygonal hole; 107. a collar;

2. mounting a plate; 201. a threaded through hole;

3. a bar material; 301. a light hole; 302. a threaded inner bore;

4. a housing; 401. a first housing; 4011. a barrel; 4012. an end cap; 402. a second housing; 4021. a first annular structure; 4022. a second annular structure; 403. a first through hole; 404. a second through hole; 405. a wiring port;

5. a manifold cylinder; 501. a flange; 6. a thermal insulation layer; 7. a seal member; 8. a sleeve; 9. a nut; 10. and (7) a gasket.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The prior art reaction apparatus generally comprises a bar and a mounting plate. Wherein, the mounting panel sets up to a pair of, has the interval between a pair of mounting panel, and the space between two mounting panels forms the reaction space that can hold the rod, and the both ends of rod are connected with a pair of mounting panel respectively. The pair of mounting plates are respectively provided with an inlet hole for the heat exchange medium to enter and an outlet hole for the heat exchange medium to exit. During the operation of the reaction device, the heat exchange medium enters the reaction space from the inlet hole, flows through the gap between the bars, exchanges heat with the outer wall of the bars and is finally discharged from the discharge hole. Since the rods are mounted on the mounting plate, the size of the mounting plate determines the size of the reaction space and the number of rods that can be mounted. Under the condition that the size of the mounting plate is determined, the inlet holes and the outlet holes arranged on the mounting plate inevitably occupy the mounting space of the bars, so that the number of the bars in the reaction space is reduced, and the heating effect of the reaction device is reduced.

Therefore, in order to solve the problem that the number of rods in a reaction space is reduced as the opening on the mounting plate of the reaction device occupies the mounting space of the rods in the prior art, and achieve the effect of increasing the number of the rods which can be mounted on the mounting plate on the premise of not increasing the area of the mounting plate, the embodiment of the invention provides the plunger, the reaction device and the nuclear reactor.

The plunger 1 provided in the embodiment of the present invention is described below with reference to fig. 1 to 11.

Specifically, the plunger 1 is used to connect the mounting plate 2 and the rod 3. The rod 3 may be a fuel rod or an electric heating rod. The mounting plate 2 is provided with a threaded through hole 201.

The plunger 1 comprises a first thread segment 101 and a connecting segment 102. Wherein the first thread section 101 is used for being in threaded connection with a threaded through hole 201 on the mounting plate 2. The connecting section 102 is used for connecting to the rod 3, for example, the connecting section 102 can be plugged into the rod 3. Alternatively, the first thread segment 101 and the connecting segment 102 may be provided as an integral structure, or the first thread segment 101 and the connecting segment 102 may be separately processed and then installed by means of a thread connection, a welding connection, or an adhesive connection.

Referring to fig. 6 and 7, the plunger 1 is provided with a flow passage hole 103 and a communication hole 104. The flow passage hole 103 penetrates through one end of the plunger 1 where the first thread section 101 is provided, and the flow passage hole 103 extends toward the connecting section 102. The flow passage hole 103 is used to communicate with the space on the side of the mounting plate 2 remote from the connection section 102. A communication hole 104 is provided on a side wall on the plunger 1, and the communication hole 104 communicates with the flow passage hole 103. The communication hole 104 is used to communicate with the space on the side of the mounting plate 2 near the connecting section 102. That is, the communication hole 104 and the flow path hole 103 are respectively used to communicate with both sides of the mounting plate 2, and the communication hole 104 and the flow path hole 103 communicate with each other. Alternatively, the plunger 1 is of a cylindrical structure, the flow passage hole 103 extends along the length direction or axial direction of the plunger 1, and the communication hole 104 extends along the radial direction of the plunger 1.

The plunger 1 provided by the invention is connected with the mounting plate 2 through the first thread section 101 and is connected with the rod 3 through the connecting section 102, so that the rod 3 and the mounting plate 2 can be connected. Meanwhile, a flow passage hole 103 is formed in one end, away from the connecting section 102, of the first threaded section 101 of the plunger 1, and the flow passage hole 103 extends towards the connecting section 102 and is communicated with a space on one side, away from the connecting section 102, of the mounting plate 2. The plunger 1 is further provided with a communication hole 104 for connecting the flow channel hole 103 and a space of the mounting plate 2 on a side close to the connection section 102, so that the heat exchange medium can pass through the mounting plate 2 through the flow channel hole 103 and the communication hole 104 of the plunger 1. It should be noted that the heat exchange medium may be liquid or gas. Wherein the liquid includes, but is not limited to, water. Gases include, but are not limited to, air and inert gases.

So set up, heat transfer medium can pass mounting panel 2 through flow channel hole 103 and the intercommunicating pore 104 on plunger 1, thereby need not trompil on mounting panel 2 and supply the heat transfer medium circulation, and then can be at the position installation rod 3 that originally needs the trompil, the installation quantity of rod 3 has been increased, reaction unit's heating effect has been improved, it causes occupation to rod 3 installation space to have solved trompil on mounting panel 2 among the prior art, the problem that leads to the reduction of rod 3 installation quantity, reached under the prerequisite that does not increase the area of mounting panel, the effect of the installation quantity of rod has been increased.

Simultaneously, owing to need not to supply the heat transfer medium circulation at trompil on mounting panel 2, mounting panel 2's trompil quantity is still less, consequently can improve mounting panel 2's structural strength. In addition, the reaction apparatus is more compact in structure since the installation plate 2 can be reduced in volume without the need for the opening.

Meanwhile, since the first thread section 101 of the plunger 1 is in threaded connection with the threaded through hole 201 of the mounting plate 2, at least part of the orifice of the communication hole 104 can enter the threaded through hole 201 when the plunger 1 moves axially along the threaded through hole 201 by screwing the plunger 1. That is, part of the orifices of the communication hole 104 are covered by the hole wall of the threaded through hole 201, so that the through-flow cross section of the flow channel of the heat exchange medium is reduced, and the effect of adjusting the flow rate of the heat exchange medium can be achieved by screwing the plunger 1.

In addition, the reaction device in the prior art has different distances from the opening of each bar 3 in the reaction space, the heat dissipation effect of the bar 3 close to the opening is better, the heat dissipation effect of the bar 3 far away from the opening is relatively poorer, so that the heating capacity of each bar 3 cannot be fully utilized, and the heating rate and the heating effect of the reaction device are limited. The plunger 1 is connected with the bar 3 and the mounting plate 2, so that the problem that the distance between the bar 3 and the opening is different does not exist, the plunger 1 corresponding to each bar 3 can be used for circulating a heat exchange medium, and the heat exchange medium flows through the outer surface of each bar 3 for heat exchange. So, heat transfer medium can carry out the heat transfer with every rod 3 to make full use of every rod 3's heating capacity can improve reaction unit's heating rate and heating effect.

Referring to fig. 1 and 6, in some embodiments provided by the present invention, plunger 1 further comprises a tip 105. Wherein the end 105 is connected to an end of the first thread segment 101 remote from the connecting section 102, i.e. the end 105 is arranged at an end of the first thread segment 101 remote from the connecting section 102. The flow passage hole 103 penetrates the tip 105. The cross-sectional area of the ends 105 is greater than the cross-sectional area of the first thread segments 101 and as used herein is the area of the cross-section taken perpendicular to the length of the plunger 1. The head 105 is adapted to abut against a side of the mounting plate 2 remote from the connecting section 102. In the process of connecting the mounting plate 2 and the bar 3 by using the plunger 1, the connecting section 102 of the plunger 1 firstly penetrates through the thread through hole 201 of the mounting plate 2, then the connecting section 102 is connected with the bar 3, and then the first thread section 101 is screwed with the thread through hole 201 until the end 105 abuts against the mounting plate 2.

With this arrangement, when the plunger 1 is mounted in the threaded through hole 201, the tip 105 abuts against the mounting plate 2, so that the plunger 1 can be positioned and the plunger 1 can have a certain mounting position.

Further, in order to adjust the distance between the tip 105 and the mounting plate 2 so that at least part of the opening of the communication hole 104 can enter the threaded through hole 201, a spacer may be provided between the tip 105 and the mounting plate 2. The effect of conveniently and accurately adjusting the distance between the end 105 and the mounting plate 2 can be achieved by increasing or decreasing the number of the spacers or replacing the spacers with different thicknesses.

Referring to FIG. 1, in some embodiments provided by the invention, a flow passage hole 103 extends through the connecting section 102. In this way, it is possible to provide the detection means in the end of the passage hole 103 close to the connecting section 102, so that the detection means can be close to the inside of the rod 3. The cable of the detection device can be led out through the channel hole 103. The sensing device includes, but is not limited to, a temperature sensor, such as a thermocouple. Alternatively, when the rod material 3 is provided as an electric heating rod, a cable of the electric heating rod may be led out from the runner hole 103. So set up, need not to set up the line hole on mounting panel 2 to can avoid crossing the crowded installation space who accounts for rod 3 of line hole, and need not to consider the sealed problem of line hole. It will be understood that the cable may also be led out through the communication hole 104 and the flow passage hole 103 in sequence, with the same effect as above.

In some embodiments provided by the invention, the inner wall of the flow passage hole 103 near one end of the tip 105 is provided with a polygonal hole 106. With this arrangement, when screwing the plunger 1 to the mounting plate 2, the plunger 1 can be screwed by a wrench into the polygonal hole 106. For example, polygonal hole 106 is a hexagonal hole and the wrench may be an internal hexagonal wrench.

In some embodiments provided by the present invention, the exterior side wall of the tip 105 is provided with at least one pair of planes that are parallel to each other. By providing at least a pair of planes parallel to each other, when screwing the plunger 1 to the mounting plate 2, the plunger 1 can be screwed by being clamped on the pair of planes parallel to each other by using a solid wrench or a socket wrench. So set up, need walk the line and be not convenient for stretch into the multilateral hole with the allen key at the downthehole, can utilize solid wrench or box spanner etc. to revolve to plunger 1.

Referring to fig. 2 and 7, in some embodiments provided by the present invention, the plunger 1 further comprises a collar 107. A collar 107 is arranged between the connecting section 102 and the first threaded section 101, one end of the collar 107 being intended to abut against the mounting plate 2 and the other end of the collar 107 being intended to abut against the rod 3. With this arrangement, the collar 107 is abutted against the mounting plate 2, whereby the plunger 1 can be positioned so that the plunger 1 has a certain mounting position. By the rod 3 abutting against the collar 107, the rod 3 can be positioned so that the rod 3 has a determined mounting position.

Further, two ends of the bar 3 are respectively connected with the corresponding mounting plates 2 through the corresponding plungers 1. Specifically, as shown in fig. 5-7, the bottom of the bar 3 is connected to the lower mounting plate 2 by the plunger 1 provided with a collar 107, and the top of the bar 3 is connected to the upper mounting plate 2 by the plunger 1 provided with a head 105. During installation, the plunger 1 provided with the collar 107 is firstly installed on the lower installation plate 2, then the rod 3 is connected with the plunger 1 provided with the collar 107, and then the plunger 1 provided with the end head 105 is used for connecting the upper installation plate 2 with the rod 3.

In some embodiments of the invention, the end of the connecting end of the plunger 1 provided with the collar 107 remote from the first thread section 101 is provided with a polygonal bore 106. With this arrangement, when screwing the plunger 1 to the mounting plate 2, the plunger 1 can be screwed by a wrench into the polygonal hole 106. For example, polygonal hole 106 is a hexagonal hole and the wrench may be an internal hexagonal wrench.

In some embodiments provided by the present invention, the outer side wall of the collar 107 is provided with at least one pair of mutually parallel flat surfaces. By providing at least a pair of planes parallel to each other, when screwing the plunger 1 to the mounting plate 2, the plunger 1 can be screwed by being clamped on the pair of planes parallel to each other by using a solid wrench or a socket wrench. So set up, need walk the line and be not convenient for stretch into the multilateral hole with the allen key at the downthehole, can utilize solid wrench or box spanner etc. to revolve to plunger 1.

In some embodiments provided by the present invention, the connecting section 102 of the plunger 1 is a second thread section for connecting with the threaded inner bore 302 of the rod 3. Through with rod 3 and plunger 1 threaded connection, can play better fixed effect to rod 3.

In some embodiments provided by the present invention, the connecting section 102 is a polished rod section for extending into the polished bore 301 of the rod 3. Through stretching into plunger 1 in the unthreaded hole 301 of rod 3, can utilize plunger 1 to provide radial positioning for rod 3 on the one hand, on the other hand makes rod 3 when being heated and extending, can follow the polished rod section and stretch out and draw back to make rod 3 have flexible space, avoid 3 extension in-process of rods to produce stress and lead to connection structure or the destroyed problem of rod 3 itself.

Further, as shown in fig. 5-7, the plunger 1 shown with the second thread section is used to connect the lower mounting plate 2 with the lower end of the bar 3, i.e. the lower end of the bar 3 is provided with a thread inner hole 302, the thread inner hole 302 is in threaded connection with the second thread section, and the bar 3 abuts against the collar 107 of the plunger 1. Meanwhile, a plunger 1 provided with a polished rod section is used for connecting the upper mounting plate 2 with the upper end of the rod 3. That is, the upper end of the rod 3 is provided with a light hole 301, and the light rod section of the plunger 1 extends into the light hole 301 of the rod 3.

In some embodiments provided by the present invention, the communication hole 104 is a long hole extending in the length direction of the plunger 1. By providing the communication hole 104 as a long hole extending in the longitudinal direction of the plunger 1, the adjustment range of the area covered by the long hole is larger when the position of the plunger 1 is adjusted along the threaded through hole 201, so that the adjustment range of the flow rate of the heat exchange medium can be increased. For example, the elongated hole may be a kidney-shaped hole.

In some embodiments provided by the present invention, the number of the communication holes 104 is plural, and the plural communication holes 104 are distributed along the circumferential direction of the plunger 1. So set up, can reduce the circulation resistance of plunger 1 to heat transfer medium for heat transfer medium circulation is more smooth and easy. For example, the plurality of communication holes 104 are evenly distributed in the circumferential direction of the plunger 1.

The embodiment of the invention also provides a reaction device.

Wherein, reaction unit includes mounting panel 2, rod 3 and as above-mentioned plunger 1. The bar 3 is connected with the mounting plate 2 through the plunger 1.

It should be noted that the reaction apparatus includes the plunger 1, and also includes all the advantages of the plunger 1, which will not be described herein.

Further, the number of the mounting plates 2 of the reaction device is two, and for convenience of description, the two mounting plates 2 are referred to as an upper mounting plate 2 and a lower mounting plate 2, respectively, as shown in fig. 5, it is to be understood that, in the actual use process, the two mounting plates 2 are not limited to be arranged up and down, for example, arranged horizontally.

Further, as shown in fig. 5-7, there is a space between the two mounting plates 2 to form a reaction space for accommodating the rods 3. The top end of the rod 3 is connected to the upper mounting plate 2 by means of a plunger 1 provided with a head 105, and the bottom end of the rod 3 is connected to the lower mounting plate 2 by means of a plunger 1 provided with a collar 107. Referring to fig. 6, during operation, heat exchange medium is introduced through the upper mounting plate 2 at a side remote from the reaction space, the arrows representing the heat exchange medium flow paths. The heat transfer medium passes through the flow passage holes 103 of the plunger 1 provided with the tips 105 and the communication holes 104 in order to enter the reaction space, thereby exchanging heat with the rod 3. Referring to fig. 7, arrows indicate a flow path of a heat exchange medium, and after the heat exchange medium exchanges heat with the rod 3 in the reaction space, the heat exchange medium is discharged out of the reaction space through the communication holes 104 and the flow path holes 103 of the plunger 1 provided with the collar 107, and is discharged to the lower side of the lower mounting plate 2. Of course, the heat exchange medium can also be introduced from the lower part of the lower mounting plate 2, the principle is the same, and the description is omitted.

In some embodiments provided by the present invention, the rod 3 is a fuel rod or an electric heating rod. When the rod 3 is provided as a fuel rod, the reaction apparatus may be used for a nuclear reactor. When the bar 3 is an electric heating bar, the reaction device can be used for carrying out a nuclear reaction simulation test.

In some embodiments provided herein, the reaction device further comprises a detection device. The detection device is connected with the electric heating rod and used for detecting parameter information of the electric heating rod. For example, the detection means may be a temperature sensor for detecting temperature information of the electrically heated rod, for example, the temperature sensor includes, but is not limited to, a thermocouple. For example, when a nuclear reaction simulation test is performed using a reactor, by providing a plurality of detectors along the longitudinal direction of the electric heating rod, the surface temperature distribution of the electric heating rod can be measured, and further, problems such as the gas flow characteristics and the heat exchange characteristics of the bundle core structure can be analyzed and studied.

The flow passage hole 103 of the plunger 1 is arranged in a penetrating manner, the detection device is arranged at one end of the flow passage hole 103 close to the connecting section 102, and a cable of the detection device is led out from the flow passage hole 103. Since the plunger 1 is inserted into the end of the rod 3, the temperature information of the inside of the rod 3 can be detected by providing the detecting means in the flow passage hole 103 of the plunger 1. And the cable of the detection device is led out from the circulation hole, and a wire passing hole does not need to be formed on the mounting plate 2. Can avoid crowding the installation space who accounts for rod 3 on the one hand, on the other hand need not to consider to walk the sealed problem of line through-hole, can guarantee the simple structure of mounting panel 2 in addition, and the processing of being convenient for and intensity are higher.

Of course, for a detection device not provided in the flow passage hole 103, the cable thereof may be drawn out through the communication hole 104 and the flow passage hole 103 in this order.

Likewise, the cable of the electrical heating rod can be led out of the reaction space through the plunger 1 with reference to the cable of the detection device.

In some embodiments provided by the present invention, the reaction apparatus further comprises a manifold 5. Two ends of the collecting cylinder 5 are respectively connected with the two mounting plates 2, and the bar 3 is arranged in the collecting cylinder 5. Through setting up the mass flow section of thick bamboo 5, at the in-process of reaction unit operation, heat transfer medium can carry out the heat transfer with rod 3 in the mass flow section of thick bamboo 5, and the existence of mass flow section of thick bamboo 5 has reduced heat transfer medium's diffusion space for heat transfer medium can be more abundant with the contact heat transfer of rod 3.

Referring to fig. 10, optionally, both ends of the collecting barrel 5 are provided with flanges 501, which are respectively connected with the two mounting plates 2. For example, the flange 501 and the mounting plate 2 are connected by a threaded fastener.

In some embodiments provided by the present invention, a seal 7 is provided between each end of the manifold 5 and both mounting plates 2. Specifically, a seal 7 is provided between two flanges 501 of the manifold 5 and the corresponding mounting plate 2. By such arrangement, the leakage of the heat exchange medium between the joint surfaces of the flange 501 and the mounting plate 2 can be avoided. Optionally, the seal 7 includes, but is not limited to, a graphite seal ring.

Referring to fig. 10, in some embodiments provided by the present invention, the reaction apparatus further comprises a thermal insulation layer 6. The heat insulation layer 6 is sleeved on the outer side of the flow collecting cylinder 5. So set up, can avoid the heat loss in the collection flow section of thick bamboo 5. Optionally, the thermal insulation layer 6 may be thermal insulation cotton, which may be fixed by a stainless steel clip.

Referring to fig. 5, in some embodiments provided by the present invention, the reaction apparatus further comprises a housing 4. The two mounting plates 2 are both mounted in the casing 4, and the casing 4 is provided with a first through hole 403 and a second through hole 404 for the heat exchange medium to enter and exit. The first through-hole 403 is provided above the upper mounting plate 2, and the second through-hole 404 is provided below the lower mounting plate 2. With such an arrangement, the shell 4 can be used for heat preservation and insulation. During the use process, a heat exchange medium can be introduced into the first through hole 403, the heat exchange medium enters the reaction space from the upper plunger 1, exchanges heat with the rod 3, and then is discharged from the reaction space from the lower plunger 1 and finally is discharged from the second through hole 404. Of course, the heat exchange medium may be introduced through the second through-hole 404 and discharged through the first through-hole 403.

Further, the housing 4 is provided with a wiring port 405. By providing the wiring port 405, the cable of the detection device and the cable of the electric heating rod can be led out from the wiring port 405. Further, the number of the wiring ports 405 is plural. The plurality of wiring ports 405 are provided to facilitate the drawing out of the cable nearby.

Optionally, the reaction apparatus further comprises a sleeve 8. The sleeve 8 is arranged in the wiring opening 405 in a penetrating manner, one end of the sleeve 8 extends into the shell 4, and the other end of the sleeve 8 extends out of the shell 4 from the wiring opening 405. The cable may be led out through the sleeve 8. A sealing structure is arranged between the cable and the sleeve 8. For example, the sealing structure may be a sealant filled in the sleeve 8. So set up, can avoid the air current to leak from sleeve 8 is interior, and through setting up sleeve 8 for the combination length between cable and the sleeve 8 is longer, can improve sealed effect when filling sealed glue.

Alternatively, the sleeve 8 may be connected to the housing 4 by welding. Of course the sleeve 8 is not limited to being connected to the housing 4 by welding. For example, the reaction device may further comprise a nut 9. As shown in fig. 11, the end of the sleeve 8 disposed inside the housing 4 is provided with a flange which abuts against the inner wall of the housing 4. The portion of the sleeve 8 disposed outside the housing 4 is provided with an external thread, and the nut 9 is coupled with the external thread of the sleeve 8, thereby fixing the sleeve 8 in the wiring port 405. Further, the reaction device also comprises a gasket 10, and the gasket 10 is arranged between the flange and the inner wall of the shell 4 and between the nut 9 and the outer wall of the shell 4. By providing the gasket, a gap between the sleeve 8 and the wiring port 405 can be sealed.

Referring to fig. 8 and 9, in some embodiments provided by the present invention, the housing 4 includes a first shell 401 and a second shell 402. The first housing 401 and the second housing 402 are detachably connected, for example, the first housing 401 and the second housing 402 are connected by a screw fastener. Both mounting plates 2 are mounted in the second housing 402, the first through-hole 403 is provided in the first housing 401, and the second through-hole 404 is provided in the second housing 402. This arrangement facilitates the mounting of the two mounting plates 2 and the rods 3 to the inside of the housing 4.

Referring to figure 5, in some embodiments provided by the present invention, the inner wall of the housing 4 is provided with a first annular structure 4021 and a second annular structure 4022. Wherein the first annular structure 4021 is used to support the upper mounting plate 2, for example the first annular structure 4021 may be welded to the inner wall of the housing 4. The second annular structure 4022 is used to support the lower mounting plate 2, for example the second annular structure 4022 may be welded to the inner wall of the housing 4. The upper mounting plate 2 may be secured to the first ring structure 4021 by fasteners. The fasteners may be threaded fasteners, including but not limited to bolts and screws.

Referring to fig. 8, optionally, first housing 401 comprises a barrel 4011 and an endcap 4012, wherein a first end of barrel 4011 is adapted to be coupled to second housing 402 and a second end of barrel 4011 is removably coupled to endcap 4012. A wiring port 405 is provided on the cylinder 4011, and the wiring port 405 is located above the upper mounting plate 2. With the arrangement, when the cable is led out of the housing 4 from the inside of the housing 4, the end cover 4012 can be opened, and then the cable is arranged and led, so that the operation is more convenient.

In some embodiments, features of the above embodiments may be combined to obtain a reaction device having all of the above features.

For example, one reaction device as shown in fig. 5 comprises two mounting plates 2, a plunger 1 provided with a tip 105 as described above, a plunger 1 provided with a collar 107 as described above, a manifold 5, a thermal insulation layer 6, a gasket, a detection device and a housing 4. It should be noted that the upper and lower portions used in the following description refer to the upper and lower portions in fig. 5, and are not intended to limit the usage process.

Wherein the two mounting plates 2 have a spacing forming a reaction space for accommodating the rods 3. Both mounting plates 2 are provided with threaded through holes 201. One end of the rod 3 is connected to the upper mounting plate 2 by means of a plunger 1 provided with a tip 105, and the other end of the rod 3 is connected to the lower mounting plate 2 by means of a plunger 1 provided with a collar 107. Wherein the plunger 1 is connected with the corresponding threaded through hole 201 of the mounting plate 2, so that at least part of the orifices of the communication hole 104 can enter into the threaded through hole 201. The head 105 has a gasket with the corresponding mounting plate 2, and the collar 107 has a gasket with the corresponding mounting plate 2.

Two ends of the collecting cylinder 5 are respectively connected with the corresponding mounting plates 2, and the bar is arranged in the collecting cylinder 5. Sealing elements 7 are arranged between the two ends of the collecting barrel 5 and the corresponding mounting plates 2.

Both the mounting plates 2 are mounted in a casing 4, the casing 4 is provided with a first through hole 403 and a second through hole 404 through which a heat exchange medium enters and exits, the first through hole 403 is provided above the upper mounting plate 2, and the second through hole 404 is provided below the lower mounting plate 2. The housing 4 includes a first housing 401 and a second housing 402, the first housing 401 and the second housing 402 are detachably connected, the two mounting plates 2 are both mounted in the second housing 402, the first through hole 403 is disposed on the first housing 401, and the second through hole 404 is disposed on the second housing 402. The inner wall of the housing 4 is provided with a first annular structure 4021 for supporting the upper mounting plate 2 and a second annular structure 4022 for supporting the lower mounting plate 2, the upper mounting plate 2 being connected to the first annular structure 4021 by threaded fasteners. First housing 401 includes a barrel 4011 and an endcap 4012, wherein one end of barrel 4011 is adapted to be coupled to second housing 402 and a second end of barrel 4011 is removably coupled to endcap 4012. The cylinder 4011 is provided with a cable port 405 through which a cable passes.

The detection device is connected with the bar 3 and used for detecting the parameter information of the bar 3, and a cable of the detection device is led out of the reaction space through the runner hole 103 or sequentially through the communication hole 104 and the runner hole 103. After the cable of the detection device is led out of the reaction space, it is led out of the housing 4 through the wiring port 405 of the cylinder 4011.

The rod 3 is a fuel rod or an electric heating rod, wherein a cable of the electric heating rod is led out of the reaction space through the flow channel hole 103 or sequentially through the communication hole 104 and the flow channel hole 103. After the cables of the detection device are led out of the reaction space, they are led out of the housing 4 through the wiring ports 405 of the cylinder 4011.

The installation step of the reaction device in the above embodiment includes:

the plunger 1 provided with the collar 107 is screwed onto the lower mounting plate 2 on the side close to the mounting space and the threaded inner bore 302 of the rod 3 is connected with the second threaded section of the plunger 1 provided with the collar 107.

The collecting cylinder 5 is sleeved on the outer side of the bar 3, and the collecting cylinder 5 is connected with the lower mounting plate 2.

The heat insulation layer 6 is sleeved outside the flow collecting cylinder 5.

The cables of the electrical heating rods and/or the detection means are passed through the threaded through holes 201 of the upper mounting plate 2.

The cables of the electrical heating rods and/or the detection means are passed through the corresponding plungers 1 provided with tips 105.

The plunger 1 provided with the tip 105 is screwed onto the upper mounting plate 2 on the side remote from the mounting space and the polished rod segment of said plunger 1 is inserted through the threaded through hole 201 into the polished hole 301 of the rod 3.

The upper mounting plate 2 is connected to the manifold 5.

The upper mounting plate 2 is placed over the first annular structure 4021 of the second housing 402 and the lower mounting plate 2 is simultaneously placed over the second annular structure 4022, and the upper mounting plate 2 and the first annular structure 4021 are connected using threaded fasteners.

The cylinder 4011 is connected with the second housing 402.

The electrical heating rod and/or the cable of the detection device are led out from the wiring port 405 of the cylinder 4011.

End cap 4012 is attached to barrel 4011.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (12)

1. A plunger (1) for connecting a mounting plate (2) with a rod (3), the mounting plate (2) being provided with a threaded through hole (201), the plunger (1) comprising a first threaded section (101) for connection with the threaded through hole (201) and a connecting section (102) for connection with the rod (3);

plunger (1) is equipped with flow channel hole (103) and intercommunicating pore (104), flow channel hole (103) link up the plunger is equipped with the one end of first screw thread section (101) and to linkage segment (102) extend, flow channel hole (103) be used for with mounting panel (2) are kept away from the space intercommunication of one side of linkage segment (102), intercommunicating pore (104) establish on the lateral wall of plunger (1) and with flow channel hole (103) intercommunication, intercommunicating pore (104) be used for with mounting panel (2) are close to the space intercommunication of one side of linkage segment (102).

2. The plunger (1) of claim 1, wherein the plunger (1) further comprises a head (105), the head (105) is connected with an end of the first threaded section (101) away from the connecting section (102), the flow passage hole (103) penetrates through the head, the cross-sectional area of the head (105) is larger than that of the first threaded section (101), and the head (105) is used for abutting against one side of the mounting plate (2) away from the connecting section (102).

3. Plunger (1) according to claim 2, characterized in that the inner wall of the flow channel hole (103) near the end of the tip (105) is provided with a polygonal hole (106);

and/or the outer side wall of the end head (105) is provided with at least one pair of planes which are parallel to each other.

4. Plunger (1) according to claim 1, characterized in that the plunger (1) further comprises a collar (107), the collar (107) being arranged between the connecting section (102) and the first threaded section (101), one end of the collar (107) being intended to abut against the mounting plate (2) and the other end of the collar (107) being intended to abut against the rod (3).

5. Plunger (1) according to claim 4, characterised in that the end of the connecting section (102) remote from the first thread section (101) is provided with a polygonal hole (106);

and/or the outer side wall of the collar (107) is provided with at least one pair of planes which are parallel to each other.

6. The plunger (1) according to any one of claims 1-5, wherein the connecting section (102) is a polished rod section for protruding into the polished bore (301) of the rod (3).

7. Plunger (1) according to any of claims 1-5, characterized in that the connecting section (102) is a second thread section for connection with a threaded inner bore (302) of the rod (3).

8. The plunger (1) according to any one of claims 1-5, wherein the communication hole (104) is a long hole extending in a length direction of the plunger (1);

and/or the communication holes (104) are distributed along the circumferential direction of the plunger (1).

9. A reactor device, comprising a mounting plate (2), a rod (3) and a plunger (1) according to any one of claims 1 to 8, the rod (3) being connected to the mounting plate (2) by the plunger (1).

10. A reactor device according to claim 9, wherein the rod material (3) is a fuel rod or an electrical heating rod.

11. The reaction device according to claim 10, further comprising a detection device connected to the electrical heating rod for detecting parameter information of the electrical heating rod, wherein the flow channel hole (103) of the plunger (1) is disposed through, the detection device is disposed at one end of the flow channel hole (103) close to the connection section (102), and a cable of the detection device is led out from the flow channel hole (103).

12. A nuclear reactor, characterized in that it comprises a reaction device according to any one of claims 9 to 11.

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