Finishing part chain plate machine brake resistor heat dissipation system of paper machine and paper machine

Abstract

The utility model relates to a heat dissipation system for a brake resistor of a finished part chain plate machine of a paper machine and the paper machine, and the system comprises a first heat dissipation device which is arranged at the upper part of the brake resistor; the second heat dissipation device is arranged on the side edge of the brake resistor; a coil of the relay is arranged on a starting circuit of a lifting machine of the paper machine, one end of a normally-open contact of the relay is connected to the power source, and the other end of the normally-open contact of the relay is connected to the first heat dissipation device and the second heat dissipation device. When the elevator of the paper machine is started, the coil of the relay arranged on the starting circuit of the elevator of the paper machine is powered on, so that the normally open contact of the relay is closed, the first heat dissipation device on the upper portion of the brake resistor and the second heat dissipation device on the side edge of the brake resistor conduct heat dissipation on the brake resistor, the temperature of the brake resistor can be effectively reduced, and the service life of the brake resistor is prolonged. The situation that the brake resistor is seriously heated is avoided, the situation that production is affected due to burning of the brake resistor is reduced, and potential safety hazards are reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of papermaking, in particular to a paper machine finishing section chain plate machine brake resistor heat dissipation system and a paper machine. BACKGROUND

[0002] The paper machine refers to various paper machines, i.e. machines for producing and processing paper for daily use and office use. There are many types of paper machines, which can be divided into paper forming machines and paper processing machines. With the increase of the speed of the paper machine and the rewinding paper speed, the operation rate of the finishing section chain plate machine is also increasing, so that the brake usage rate of the chain plate machine brake resistor is also increasing, the resistor is seriously overheated, the temperature reaches 170 DEG C, and the resistor is easily burned, which affects production and has safety hazards. CONTENT OF THE UTILITY MODEL

[0003] In view of the above problems, the present application provides a paper machine finishing section chain plate machine brake resistor heat dissipation system and a paper machine, which solves the problem that in the existing paper machine, with the increase of the operation rate of the finishing section chain plate machine, the brake usage rate of the brake resistor is also increasing, which causes the brake resistor to be seriously overheated, the resistor is easily burned, which affects production and has safety hazards.

[0004] To achieve the above-mentioned purpose, the inventor provides a paper machine finishing section chain plate machine brake resistor heat dissipation system, which comprises:

[0005] A first heat dissipation device is arranged on the upper part of the brake resistor;

[0006] A second heat dissipation device is arranged on the side of the brake resistor;

[0007] A relay is arranged on the starting circuit of the elevator of the paper machine, one end of the normally open point of the relay is connected to the power supply, and the other end is connected to the first heat dissipation device and the second heat dissipation device.

[0008] In some embodiments, the first heat dissipation device is a dry variable cross-flow cooling fan.

[0009] In some embodiments, the second heat dissipation device is a heat dissipation fan.

[0010] In some embodiments, the relay is a time delay relay.

[0011] In some embodiments, it further comprises:

[0012] A temperature sensor is arranged on the brake resistor;

[0013] A control switch is connected in parallel with the normally open point of the relay.

[0014] A controller is connected to the temperature sensor and the control end of the control switch.

[0015] In some embodiments, the first heat dissipation device and the second heat dissipation device are connected in parallel.

[0016] In some embodiments, further comprising:

[0017] A circuit breaker is arranged between the normally open point of the relay and the power supply.

[0018] Another technical solution is also provided, which is a paper machine comprising the above-mentioned brake resistance heat dissipation system of the finishing section chain conveyor of the paper machine.

[0019] Compared with the prior art, when the elevator of the paper machine is started, the coil of the relay arranged on the starting circuit of the elevator of the paper machine is powered, so that the normally open point of the relay is closed, and the first heat dissipation device on the upper part of the brake resistance and the second heat dissipation device on the side of the brake resistance dissipate heat for the brake resistance, which can effectively reduce the temperature of the brake resistance, avoid the situation that the brake resistance is overheated, reduce the situation that the production is affected due to the burning of the brake resistance, and reduce the safety hazard.

[0020] The above-mentioned content related to the utility model is only a summary of the technical solution of the present application, in order to enable those skilled in the art to more clearly understand the technical solution of the present application, and then can be implemented according to the content recorded in the description and the drawings, and in order to make the above-mentioned purpose and other purposes, characteristics and advantages of the present application more easily understood, the following is described in combination with the specific embodiments and the drawings of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0021] The drawings are only used to show the principles, implementation manners, applications, characteristics and effects of the specific embodiments and other related contents of the present application, and cannot be considered as limitations of the present application.

[0022] In the drawings of the specification:

[0023] Figure 1 A structural schematic view of the brake resistance heat dissipation system of the finishing section chain conveyor of the paper machine described in the specific embodiments;

[0024] Figure 2 Another structural schematic view of the brake resistance heat dissipation system of the finishing section chain conveyor of the paper machine described in the specific embodiments;

[0025] Figure 3 Another structural schematic view of the brake resistance heat dissipation system of the finishing section chain conveyor of the paper machine described in the specific embodiments.

[0026] The reference signs involved in the above-mentioned drawings are explained as follows:

[0027] 110, start-up circuit,

[0028] 120, temperature sensor,

[0029] 130, controller. DETAILED DESCRIPTION

[0030] To explain possible application scenarios, technical principles, specific schemes that can be implemented, purposes and effects that can be achieved, etc. of the present application in detail, the following will be described in detail in combination with specific embodiments listed and with the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical schemes of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0031] In this article, the term "embodiment" means that the specific features, structures or characteristics described in combination with the embodiment can be included in at least one embodiment of the present application. The term "embodiment" appearing at various positions in the specification does not necessarily refer to the same embodiment, and does not particularly limit the independence or association between other embodiments. In principle, in the present application, as long as there is no technical contradiction or conflict, each technical feature mentioned in each embodiment can be combined in any way to form a corresponding implementable technical scheme.

[0032] Unless otherwise defined, the meaning of the technical terms used herein is the same as that generally understood by those skilled in the art to which the present application belongs; the use of related terms in this article is only for the purpose of describing specific embodiments, and is not intended to limit the present application.

[0033] In the description of the present application, the phrase "and / or" is a description of the logical relationship between the objects, which means that there can be three relationships, for example, A and / or B, which means that there are three cases: A exists, B exists, and A and B exist at the same time. In addition, the character " / " in this article generally represents that the associated objects before and after are a "or" logical relationship.

[0034] In the present application, terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual quantity, primary and secondary or order relationship between the entities or operations.

[0035] In the present application, the terms "comprise", "contain", "include", or other similar phrases as used in a clause means to encompass the non-exclusive inclusion, and the terms do not exclude the presence of additional elements in the process, method, or product comprising the stated elements, so that the process, method, or product comprising a series of elements can not only include those defined elements, but also include other elements not explicitly listed, or also include elements inherent to such process, method, or product.

[0036] In the present application, the terms "greater than", "less than", "exceed", and the like are understood as not including the number; the terms "above", "below", "within", and the like are understood as including the number. In addition, in the description of the embodiments of the present application, the meaning of "multiple" is more than two (including two), and similar expressions related to "multiple" are also understood in this way, for example, "multiple groups", "multiple times", and the like, unless otherwise explicitly specified.

[0037] In the description of the embodiments of the present application, the spatial-related expressions used, such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "perpendicular", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or the drawings, and are only for the convenience of describing the specific embodiments of the present application or for the reader to understand, and do not indicate or imply that the indicated device or component must have a specific position, a specific orientation, or be constructed or operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0038] Unless otherwise explicitly specified or limited, in the description of the embodiments of the present application, the terms "mount", "connect", "connect", "fix", "set", and the like should be understood broadly. For example, the "connection" can be a fixed connection, or a detachable connection, or an integral setting; it can be a mechanical connection, or an electrical connection, or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art to which the present application belongs, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0039] Please refer to Figure 1 The present embodiment provides a paper machine finishing section chain plate brake resistance heat dissipation system, comprising:

[0040] A first heat dissipation device M1 is arranged at the upper portion of the brake resistance;

[0041] a second heat dissipation device M2, which is arranged at the side of the braking resistor;

[0042] a relay K1, a coil of which is arranged on the starting circuit 110 of the elevator of the paper machine, one end of the normally open point of which is connected to the power supply, and the other end of which is connected to the first heat dissipation device M1 and the second heat dissipation device M2.

[0043] When the elevator of the paper machine is started, the coil of the relay K1 arranged on the starting circuit 110 of the elevator of the paper machine is electrified, so that the normally open point of the relay K1 is closed, so that the first heat dissipation device M1 at the upper part of the braking resistor and the second heat dissipation device M2 at the side of the braking resistor dissipate heat for the braking resistor, which can effectively reduce the temperature of the braking resistor, avoid the situation that the braking resistor is overheated, reduce the situation that the production is affected due to the burning of the braking resistor, and reduce the safety hazard.

[0044] In some embodiments, the first heat dissipation device M1 is a dry variable cross-flow cooling fan. The biggest feature of the dry variable cross-flow cooling fan is that the fluid flows through the fan impeller twice, the fluid flows into the radial direction and then flows out in the radial direction, the inlet and outlet directions are in the same plane, and the discharged gas is uniformly distributed along the width direction of the fan. Its structure is simple, the volume is small, the dynamic pressure coefficient is high, and the distance reached is long.

[0045] In some embodiments, the second heat dissipation device M2 is a heat dissipation fan. The heat dissipation fan can effectively reduce the temperature rise on the braking resistor.

[0046] In some embodiments, the relay K1 is a time-delay relay. When the elevator of the paper machine is closed, the starting circuit 110 is de-energized, and due to the action of the time-delay relay, the normally open point will not be disconnected immediately, but will be disconnected after a delay. The heat dissipation device can dissipate heat for the braking resistor after the elevator stops working, so that even if the time from the closing of the elevator to the restarting of the elevator is short, the heat dissipation device can effectively dissipate heat for the braking resistor to avoid the situation that the braking resistor is overheated. The time delay is 5 minutes. In other embodiments, software can be written to start the first heat dissipation device M1 and the second heat dissipation device M2 when the elevator is running, and to close the first heat dissipation device M1 and the second heat dissipation device M2 after a delay when the elevator is closed. The delay is 5 minutes, and when the elevator is restarted within 5 minutes, the time delay will be refreshed.

[0047] Please refer to Figure 2 In some embodiments, it further comprises:

[0048] A temperature sensor 120 is arranged on the braking resistor;

[0049] A control switch is connected in parallel with the normally open point of the relay K1;

[0050] A controller 130 is connected to the temperature sensor 120 and the control end of the control switch.

[0051] In order to avoid that the temperature of the braking resistor is high before the elevator starts, and the braking resistor heats up too fast and generates heat seriously when the elevator starts, the temperature sensor 120 is arranged on the braking resistor to detect the temperature of the braking resistor. When the temperature of the braking resistor exceeds the preset temperature, the controller 130 controls the control switch to be closed, so that even if the elevator is in the closed state, the first heat dissipation device M1 and the second heat dissipation device M2 can also dissipate heat for the braking resistor when the temperature of the braking resistor exceeds the preset temperature.

[0052] In some embodiments, the first heat dissipation device M1 and the second heat dissipation device M2 are connected in parallel. In other embodiments, the first heat dissipation device M1 and the second heat dissipation device M2 can also be connected in series.

[0053] Please refer to Figure 3 In some embodiments, further comprising:

[0054] A circuit breaker QF is arranged between the normally open point of the relay K1 and the power supply.

[0055] By arranging the circuit breaker QF, when a short circuit occurs, the circuit breaker QF can be disconnected in time to avoid burning out the two heat sinks.

[0056] In some embodiments, a paper machine finishing section chain plate mechanism braking resistor heat dissipation system is provided, which adds a dry variable cross-flow cooling fan above the braking resistor and a heat dissipation fan on the side. It can effectively blow out the heat generated by the braking resistor in the bottom shield, and can also timely cool the elevator braking resistor which generates the most serious heat above. Considering energy saving, through the program written by Bote, when the elevator is running, the heat dissipation fan starts, and the delay is 5 minutes. Within 5 minutes, if the elevator starts again, the delay closing time will be refreshed again.

[0057] The braking resistor temperature is obviously suppressed. The heat generated by the braking resistor during continuous paper feeding can reach 170°C, which can now be controlled within 90°C, which is much lower than 120°C, greatly extending the service life of the braking resistor.

[0058] Another technical solution is also provided, which is a paper machine, comprising the above-mentioned paper machine finishing section chain plate mechanism braking resistor heat dissipation system, and the braking resistor heat dissipation system comprises:

[0059] a first heat dissipation device M1, which is arranged at the upper part of the braking resistor;

[0060] a second heat dissipation device M2, which is arranged at the side of the braking resistor;

[0061] a relay K1, the coil of which is arranged on the starting circuit 110 of the elevator of the paper machine, and one end of the normally open point of which is connected to the power supply and the other end of which is connected to the first heat dissipation device M1 and the second heat dissipation device M2.

[0062] When the elevator of the paper machine is started, the coil of the relay K1 arranged on the starting circuit 110 of the elevator of the paper machine is electrified, so that the normally open point of the relay K1 is closed, so that the first heat dissipation device M1 at the upper part of the braking resistor and the second heat dissipation device M2 at the side of the braking resistor dissipate heat for the braking resistor, which can effectively reduce the temperature of the braking resistor, avoid the situation that the braking resistor is overheated, reduce the situation that the production is affected due to the burning of the braking resistor, and reduce the safety hazard.

[0063] In some embodiments, the first heat dissipation device M1 is a dry variable cross-flow cooling fan. The biggest feature of the dry variable cross-flow cooling fan is that the fluid flows through the fan impeller twice, the fluid flows into the radial direction and then flows out in the radial direction, the inlet and outlet directions are in the same plane, and the discharged gas is uniformly distributed along the width direction of the fan. Its structure is simple, the volume is small, the dynamic pressure coefficient is high, and the distance reached is long.

[0064] In some embodiments, the second heat dissipation device M2 is a heat dissipation fan. The heat dissipation fan can effectively reduce the temperature rise on the braking resistor by discharging the heat generated by the braking resistor.

[0065] In some embodiments, the relay K1 is a time-delay relay K1. The relay K1 adopts a time-delay relay. When the elevator of the paper machine is closed, the starting circuit 110 is de-energized, and due to the action of the time-delay relay, the normally open point will not be disconnected immediately, but will be disconnected after a delay. The braking resistor can be cooled even after the elevator stops working, so that the braking resistor can be effectively cooled even if the time from the closing of the elevator to the restarting of the elevator is short. The delay time is 5 minutes. In other embodiments, software can be written to start the first heat dissipation device M1 and the second heat dissipation device M2 when the elevator is running, and to delay the closing of the first heat dissipation device M1 and the second heat dissipation device M2 when the elevator is closed. The delay time is 5 minutes, and when the elevator is restarted within 5 minutes, the delay closing time will be refreshed.

[0066] In some embodiments, the brake resistor heat dissipation system further comprises:

[0067] a temperature sensor 120 arranged on the brake resistor;

[0068] a control switch connected in parallel with the normally open point of the relay K1;

[0069] a controller 130 connected to the temperature sensor 120 and the control end of the control switch.

[0070] In order to avoid the temperature of the brake resistor being too high before the elevator starts, and the brake resistor heating up too fast and generating too much heat when the elevator starts, the temperature sensor 120 is arranged on the brake resistor to detect the temperature of the brake resistor. When the temperature of the brake resistor exceeds the preset temperature, the controller 130 controls the control switch to be closed, so that even if the elevator is in the closed state, the first heat dissipation device M1 and the second heat dissipation device M2 can still dissipate heat for the brake resistor when the temperature of the brake resistor exceeds the preset temperature.

[0071] In some embodiments, the first heat dissipation device M1 and the second heat dissipation device M2 are connected in parallel. In other embodiments, the first heat dissipation device M1 and the second heat dissipation device M2 can also be connected in series.

[0072] In some embodiments, the brake resistor heat dissipation system further comprises:

[0073] a circuit breaker QF arranged between the normally open point of the relay K1 and the power supply.

[0074] By arranging the circuit breaker QF, when a short circuit occurs, the circuit breaker QF can be disconnected in time to avoid burning out the two heat sinks.

[0075] Finally, it should be noted that although the above embodiments have been described in the specification and drawings of the present application, this does not limit the patent protection scope of the present application. Any equivalent structure or equivalent flow replacement or modification based on the essential concept of the present application, using the content described in the specification and drawings, directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, etc., are all included in the patent protection scope of the present application.

Claims

1. A paper machine finishing section chain conveyor brake resistance heat sink system characterized by, It comprises: a first heat-dissipating device arranged on the upper part of the braking resistor; a second heat-dissipating device arranged on the side of the braking resistor; a relay, the coil of which is arranged on the starting circuit of the elevator of the paper machine, one end of the normally open point of which is connected to the power supply and the other end of which is connected to the first heat-dissipating device and the second heat-dissipating device.

2. The paper machine finish chain belt mechanism brake resistive heat sink system of claim 1 wherein, The first heat-dissipating device is a dry variable cross-flow cooling fan.

3. The paper machine finish chain belt mechanism brake resistive heat sink system of claim 1 wherein, The second heat-dissipating device is a heat-dissipating fan.

4. The paper machine finish chain belt mechanism brake resistive heat sink system of claim 1 wherein, The relay is a time-delay relay.

5. The paper machine finish chain belt mechanism brake resistive heat sink system of claim 1 wherein, It further comprises: a temperature sensor arranged on the braking resistor; a control switch connected in parallel to the normally open point of the relay; a controller connected to the temperature sensor and the control end of the control switch.

6. The paper machine finish chain belt mechanism brake resistive heat sink system of claim 1 wherein, The first heat-dissipating device is connected in parallel to the second heat-dissipating device.

7. The paper machine finishing section chain belt mechanism brake resistive heat sink system of claim 1 wherein, It further comprises: a circuit breaker arranged between the normally open point of the relay and the power supply.

8. A paper machine characterized by It comprises the braking resistor heat-dissipating system of the finishing section chain board mechanism of the paper machine according to any one of claims 1-7.

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