Electrical engineering cable protection equipment and use method thereof

Abstract

The invention relates to an electrical engineering cable protection device and a use method thereof, and belongs to the technical field of cable protection, the electrical engineering cable protection device comprises a placement wire duct, a placement support, a bearing cylinder, a bearing rod, a connecting plate, a wire duct cover plate, an industrial cooling-water machine, a water cooling pipeline and a temperature detector, the placement support is rotatably connected with the bearing rod, and the bearing rod can be connected with the bearing cylinder through a bolt; the bearing cylinder is rotationally connected with an installation frame, and damping hanging rods are evenly and fixedly installed on the installation support and fixedly connected with the connecting plate. According to the invention, the multi-angle mounting bracket is arranged, so that a cable can be conveniently suspended and mounted, the outer protection wire duct convenient to mount is arranged, the laid cable can be isolated and protected, the cable can be protected by arranging the wire duct at a high position, and the wire duct is provided with the isolation layer and the heat dissipation layer, so that heat of the outer wall of the wire duct can be effectively insulated and protected; and when the temperature is too high, heat in the sealing wire groove can be taken away through the cooling liquid, so that the cable can carry out electric power or signal transmission at a proper temperature.

Description

Technical Field

[0001] The present invention relates to the technical field of cable protection, and in particular to an electrical engineering cable protection device and a use method thereof. Background Art

[0002] With the progress and development of society, power infrastructure is also widely popularized, which makes people's daily life more and more convenient. The popularization of electricity has greatly improved people's quality of life. In the process of laying and construction of power infrastructure, the role of cables is self-evident. However, during the use of cables, if they are exposed to the wild for a long time, it is easy to cause cable damage. Therefore, cable protection devices are needed to protect the cables.

[0003] When laying cables in workplaces such as high-temperature furnaces, electric furnaces, petrochemical industries, automobile engines, and aerospace, not only conventional protection is required, but also the heat of the outer wall needs to be isolated to prevent it from affecting the transmission of power or signals through the cables. In order to ensure the efficiency of cable laying in electrical engineering and provide safety protection for cables in high-temperature working scenes, an electrical engineering cable protection device and a method of using the same are proposed. The device is provided with a multi-angle mounting bracket to facilitate hanging and installing cables, and an outer protective cable trough that is easy to install is provided to isolate and protect the laid cables. The cables can be protected by placing the cable trough in a high place. The cable trough is provided with an isolation layer and a heat dissipation layer to effectively insulate the heat of the outer wall of the cable trough. When the temperature is too high, the heat in the sealed cable trough can be taken away by coolant, so that the cables can transmit electricity or signals at a suitable temperature. Summary of the invention

[0004] The present invention provides an electrical engineering cable protection device and a method of using the same, which solves the problems raised by the above-mentioned existing background technology and is suitable for workplaces such as high-temperature furnaces, electric furnaces, petrochemical industry, automobile engines, and aerospace. It can be quickly laid and installed in factories as needed, and is provided with a heat insulation layer and a heat dissipation layer, which can not only effectively isolate external heat, but also can perform water cooling on the cable through the heat dissipation component when the temperature is high.

[0005] The solution of the present invention to solve the above technical problems is as follows: an electrical engineering cable protection device and a method of using the same, comprising a wire trough, a mounting bracket, a load-bearing cylinder, a load-bearing rod, a connecting plate, a wire trough cover, an industrial chiller, a water-cooling pipe, and a temperature detector. The mounting bracket is rotatably connected to the load-bearing rod, the load-bearing rod can be connected to the load-bearing cylinder by bolts, the load-bearing cylinder is rotatably connected to a mounting frame, the mounting bracket is evenly fixed with a shock-absorbing hanger, the shock-absorbing hanger is fixedly connected to the connecting plate, the mounting wire trough can be connected to the connecting plate by bolts, the mounting wire trough is connected to the wire trough cover by screws, and the mounting wire trough and the wire trough cover are both provided with a heat-insulating cotton layer and an inorganic fireproof board, the installation line trough is fixedly installed with a flange edge, the flange edge of the installation line trough can be connected by bolts, a heat transfer plate is connected in the installation line trough by screws, two industrial water chillers are provided, a pipe laying groove is provided at the bottom of the inner wall of the installation line trough, and heat dissipation fins are evenly fixedly installed on the inner wall of the pipe laying groove, the water cooling pipe is laid in the pipe laying groove, the two industrial water chillers are fixedly connected with a water pump, the water pump is fixedly connected with a three-way valve, the three-way valve is connected with the water cooling pipe, the industrial water chiller is provided with a return pipe, the return pipe is connected with the three-way valve, and the temperature detector is installed at the installation line trough;

[0006] The method of use includes the following steps:

[0007] S1: The load-bearing tube and the load-bearing rod can be retracted and adjusted in length. The mounting frame can be installed on the roof or bracket inside the house by bolts, so that the placement bracket can be evenly installed on the roof inside the factory building according to the cable laying position. A shock-absorbing hanger is provided in the gap between the placement bracket and the connecting plate, and the shock-absorbing hanger can provide shock-absorbing protection for the placement cable trough connected at the bottom;

[0008] S2: The flange edges of adjacent installation cable troughs can be connected by bolts, so that the installation cable troughs can be spliced ​​into cable routing troughs, and the water cooling pipes are evenly laid in the pipe laying troughs. Heat dissipation fins are evenly arranged in the pipe laying troughs, so that the water cooling pipes can be laid in the pipe laying troughs in an S shape. After laying, the heat transfer plate can be covered. The top of the heat transfer plate is evenly provided with partition plates for separating cables. After the cables are laid, the cable trough cover can be installed on the top of the installation cable trough. The installation cable trough can be connected to the connecting plate by bolts, so that the installation cable trough can be hoisted on the top of the room;

[0009] S3: The cable trough and cable trough cover are both provided with a heat-insulating cotton layer and an inorganic fire-resistant board to isolate the heat from the outer wall, thereby providing heat insulation protection for the internal cables. The temperature detector can detect the temperature inside the cable trough;

[0010] S4: When the temperature detector detects that the cable storage temperature is high, the water pump of the industrial chiller on one side can be started. The water pump can pump the coolant into the water-cooling pipe. The water-cooling pipe is evenly laid in the pipe laying groove, and the cables inside the cable trough can be cooled by heat exchange through the heat dissipation fins and heat transfer plates, so that the cables in the cable trough can be cooled while maintaining the sealing protection and heat insulation effect of the cable trough. After the water of the industrial chiller on one side is used up, the three-way valves on both sides can be started to replace the pipeline, so that the industrial chiller on the other side pumps cold water into the water-cooling pipe and then returns it to the other industrial chiller through the reflux pipe for recycling, so that the cable trough and the cables inside it can be cooled again.

[0011] Based on the above technical solution, the present invention can also be improved as follows.

[0012] Furthermore, the load-bearing tube is evenly provided with waist-shaped holes, and the load-bearing rod is provided with through holes corresponding to the waist-shaped holes, so that the load-bearing rod can be telescopically adjusted in length at the load-bearing tube, and can be positioned by bolt connection after adjustment.

[0013] Furthermore, a protective sleeve is fixedly installed at the gap between the connecting plate and the mounting bracket, and the protective sleeve wraps the shock-absorbing suspension rod. The protective sleeve can protect the shock-absorbing suspension rod, thereby increasing the service life.

[0014] Furthermore, a partition plate is evenly fixedly installed on the top of the heat transfer plate, and the heat transfer plate can be separated by a cable groove through the partition plate, so that multiple cables can be placed separately.

[0015] Furthermore, the detection end of the temperature detector is inserted through the heat transfer plate to fit the cable placement position, and the insertion connection is sealed, so that the temperature detector can detect the temperature in the cable trough.

[0016] Furthermore, the heat dissipation fins are evenly and staggeredly arranged on the inner wall of the pipe laying groove, so that the water cooling pipe can be evenly laid in the pipe laying groove in an S shape.

[0017] Furthermore, the heat transfer plate is closely fitted with the heat dissipation fins, thereby further increasing the heat dissipation area and improving the heat dissipation efficiency.

[0018] The beneficial effects of the present invention are as follows: the present invention provides an electrical engineering cable protection device and a method for using the same, which have the following advantages:

[0019] 1. The mounting frame can be installed on the top of the house or the bracket by bolts, so that the mounting bracket can be evenly installed on the top of the factory building according to the cable laying position. The shock-absorbing hanger can provide shock-absorbing protection for the mounting wire trough connected at the bottom. The mounting wire trough that constitutes the cable routing trough can be evenly laid on the top of the room, thereby preventing damage from foreign objects and having better safety.

[0020] 2. The water-cooling pipe can be laid in the pipe laying groove in an S shape. After laying, the heat transfer plate can be covered. The top of the heat transfer plate is evenly provided with a partition plate for separating cables. After the cables are laid, the cable trough cover can be installed on the top of the installation cable trough. The installation cable trough and the cable trough cover are both provided with a heat insulation cotton layer and an inorganic fire-resistant board to isolate the heat of the outer wall, thereby providing heat insulation protection for the internal cables;

[0021] 3. The temperature detector can detect the temperature in the installation cable trough, and the water pump can pump the coolant into the water cooling pipe. The water cooling pipe is evenly laid in the pipe laying groove, and the cables inside the installation cable trough can be cooled by heat exchange through the heat dissipation fins and heat transfer plates, so that the cables in the installation cable trough can be cooled while maintaining the sealing protection and heat insulation effect of the installation cable trough;

[0022] 4. Such electrical engineering cable protection equipment is equipped with multi-angle mounting brackets, which can facilitate the hanging installation of cables. It is equipped with an external protective cable trough that is easy to install, which can isolate and protect the laid cables. The cables can be protected by placing the cable trough at a high place. The cable trough is provided with an isolation layer and a heat dissipation layer, which can effectively insulate the heat of the outer wall of the cable trough. When the temperature is too high, the heat in the sealed cable trough can be taken away by the coolant, so that the cable can transmit electricity or signals at a suitable temperature.

[0023] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. The specific implementation of the present invention is given in detail by the following embodiments and their accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0025] Figure 1 A schematic diagram of the structure of an electrical engineering cable protection device and a method of using the same provided by an embodiment of the present invention;

[0026] Figure 2 A schematic diagram of the structure of an electrical engineering cable protection device and a method of using the same from a side view provided by an embodiment of the present invention;

[0027] Figure 3 A side view of a cable duct installed in an electrical engineering cable protection device and a method for using the same provided by an embodiment of the present invention;

[0028] Figure 4A schematic diagram of a disassembled wiring trough in an electrical engineering cable protection device and a method for using the same provided in one embodiment of the present invention;

[0029] Figure 5 A schematic structural diagram of a pipeline laying trough in an electrical engineering cable protection device and a method for using the same provided in one embodiment of the present invention.

[0030] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0031] 1. Install the wire trough; 2. Install the bracket; 3. Load-bearing tube; 4. Load-bearing rod; 5. Mounting frame; 6. Shock-absorbing hanger; 7. Connecting plate; 8. Protective cover; 9. Wire trough cover; 10. Insulating cotton layer; 11. Inorganic fire-resistant board; 12. Flange edge; 13. Heat transfer plate; 14. Cooling fins; 15. Partition plate; 16. Industrial chiller; 17. Water-cooling pipe; 18. Pipe laying groove; 19. Water pump; 20. Three-way valve; 21. Return pipe; 22. Temperature detector. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-5 The principles and features of the present invention are described, and the examples are only used to explain the present invention and are not used to limit the scope of the present invention. In the following paragraphs, the present invention is described in more detail by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become clearer according to the following description and claims. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, and are only used to facilitate and clearly assist in explaining the purpose of the embodiments of the present invention.

[0033] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0035] like Figure 1-5As shown, the present invention provides an electrical engineering cable protection device and a method of using the same, including a placement cable trough 1, a placement bracket 2, a load-bearing cylinder 3, a load-bearing rod 4, a connecting plate 7, a cable trough cover plate 9, an industrial chiller 16, a water-cooling pipe 17, and a temperature detector 22. The placement bracket 2 is rotatably connected to the load-bearing rod 4, the load-bearing rod 4 can be connected to the load-bearing cylinder 3 by bolts, the load-bearing cylinder 3 is rotatably connected to a mounting frame 5, the placement bracket 2 is evenly fixedly installed with a shock-absorbing suspension rod 6, the shock-absorbing suspension rod 6 is fixedly connected to the connecting plate 7, the placement cable trough 1 can be connected to the connecting plate 7 by bolts, the placement cable trough 1 is connected to the cable trough cover plate 9 by screws, and the placement cable trough 1 and the cable trough cover plate 9 are both provided with a heat insulation cotton layer 10 and an inorganic fireproof board 11 , the installation wire trough 1 is fixedly installed with a flange edge 12, the flange edge 12 of the installation wire trough 1 can be connected by bolts, and a heat transfer plate 13 is connected in the installation wire trough 1 by screws. There are two industrial water chillers 16. A pipe laying groove 18 is provided at the bottom of the inner wall of the installation wire trough 1. The inner wall of the pipe laying groove 18 is evenly and fixedly installed with heat dissipation fins 14. The water cooling pipe 17 is laid in the pipe laying groove 18. The two industrial water chillers 16 are fixedly connected with a water pump 19. The water pump 19 is fixedly connected with a three-way valve 20. The three-way valve 20 is connected to the water cooling pipe 17. The industrial water chiller 16 is provided with a return pipe 21, and the return pipe 21 is connected to the three-way valve 20. A temperature detector 22 is installed at the installation wire trough 1.

[0036] Preferably, the load-bearing tube 3 is evenly provided with waist-shaped holes, and the load-bearing rod 4 is provided with through holes corresponding to the waist-shaped holes, so that the load-bearing rod 4 can be telescopically adjusted in length at the load-bearing tube 3, and can be positioned by bolt connection after adjustment.

[0037] Preferably, a protective sleeve 8 is fixedly installed at the gap between the connecting plate 7 and the mounting bracket 2, and the protective sleeve 8 wraps the shock-absorbing suspension rod 6. The protective sleeve 8 can protect the shock-absorbing suspension rod 6, thereby increasing the service life.

[0038] Preferably, a partition plate 15 is evenly fixedly installed on the top of the heat transfer plate 13, and the heat transfer plate 13 can be separated by cable grooves through the partition plate 15, so that multiple cables can be placed separately.

[0039] Preferably, the detection end of the temperature detector 22 is inserted through the heat transfer plate 13 to fit the cable placement position, and the insertion connection is sealed, so that the temperature detector 22 can detect the temperature inside the cable trough 1.

[0040] Preferably, the heat dissipation fins 14 are evenly and staggeredly arranged on the inner wall of the pipe laying groove 18 , so that the water cooling pipe 17 can be evenly laid in the pipe laying groove 18 in an S shape.

[0041] Preferably, the heat transfer plate 13 and the heat dissipation fins 14 are closely fitted, so as to preferably increase the heat dissipation area and improve the heat dissipation efficiency.

[0042] The specific working principle and use method of the present invention are as follows: S1: the load-bearing tube 3 and the load-bearing rod 4 can be telescopically adjusted in length, and the mounting frame 5 can be installed on the top of the house or the bracket by bolts, so that the placement bracket 2 can be evenly installed on the top of the factory building according to the cable laying position, and a shock-absorbing suspension rod 6 is provided at the gap between the placement bracket 2 and the connecting plate 7, and the shock-absorbing suspension rod 6 can provide shock-absorbing protection for the placement cable trough 1 connected at the bottom;

[0043] S2: The flange edges 12 of adjacent installation wire troughs 1 can be connected by bolts, so that the installation wire troughs 1 can be spliced ​​into cable routing troughs, and the water cooling pipes 17 are evenly laid in the pipe laying grooves 18. The heat dissipation fins 14 are evenly arranged in the pipe laying grooves 18, so that the water cooling pipes 17 can be laid in the pipe laying grooves 18 in an S shape. After laying, the heat transfer plates 13 can be covered. The tops of the heat transfer plates 13 are evenly provided with partition plates 15 for separating cables. After the cables are laid, the wire trough cover plate 9 can be installed on the tops of the installation wire troughs 1. The installation wire troughs 1 can be connected to the connecting plate 7 by bolts, so that the installation wire troughs 1 can be hoisted on the top of the room;

[0044] S3: The cable trough 1 and the cable trough cover 9 are both provided with a heat insulating cotton layer 10 and an inorganic fireproof board 11 to isolate the heat of the outer wall, thereby providing heat insulation protection for the internal cables, and the temperature detector 22 can detect the temperature inside the cable trough 1;

[0045] S4: When the temperature detector 22 detects that the cable storage temperature is high, the water pump 19 of the industrial chiller 16 on one side can be started. The water pump 19 can pump the coolant into the water-cooling pipe 17. The water-cooling pipe 17 is evenly laid in the pipe laying groove 18, and the cables inside the cable trough 1 can be cooled by heat exchange through the heat dissipation fins 14 and the heat transfer plates 13, so that the cables in the cable trough 1 can be cooled while maintaining the sealing protection and heat insulation effect of the cable trough 1. After the water of the industrial chiller 16 on one side is used up, the three-way valves 20 on both sides can be started to replace the pipeline, so that the industrial chiller 16 on the other side pumps cold water into the water-cooling pipe 17 and then refluxes to the other industrial chiller 16 through the reflux pipe 21 for recycling, so that the cable trough 1 and the cables inside it can be cooled again.

[0046] It should be noted that, in this document, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Contents not described in detail in this specification belong to the prior art known to professionals in the field.

[0047] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any ordinary technician in the industry can smoothly implement the present invention as shown in the drawings and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the protection scope of the technical solution of the present invention.

Claims

1. An electrical engineering cable protection device, comprising a cable trough (1), a mounting bracket (2), a load-bearing cylinder (3), a load-bearing rod (4), a connecting plate (7), a cable trough cover plate (9), an industrial chiller (16), a water cooling pipe (17), and a temperature detector (22), characterized in that: The placement bracket (2) is rotatably connected to the load-bearing rod (4), the load-bearing rod (4) can be connected to the load-bearing cylinder (3) by bolts, the load-bearing cylinder (3) is rotatably connected to a mounting frame (5), the placement bracket (2) is evenly fixedly installed with a shock-absorbing suspension rod (6), the shock-absorbing suspension rod (6) is fixedly connected to a connecting plate (7), the placement wire trough (1) can be connected to the connecting plate (7) by bolts, and the placement wire trough (1) is connected to a wire trough cover plate (9) by screws, The wire trough (1) and the wire trough cover (9) are both provided with a heat insulation cotton layer (10) and an inorganic fireproof board (11); the wire trough (1) is fixedly installed with a flange edge (12); the flange edge (12) of the wire trough (1) can be connected by bolts; a heat transfer plate (13) is connected in the wire trough (1) by screws; two industrial chillers (16) are provided; a pipe laying groove (18) is provided at the bottom of the inner wall of the wire trough (1); The inner wall of the pipe laying groove (18) is evenly fixedly installed with heat dissipation fins (14), the water cooling pipe (17) is laid in the pipe laying groove (18), the two industrial water chillers (16) are fixedly connected to a water pump (19), the water pump (19) is fixedly connected to a three-way valve (20), the three-way valve (20) and the water cooling pipe (17) are connected, the industrial water chiller (16) is provided with a return pipe (21), the return pipe (21) and the three-way valve ( 20), the temperature detector (22) is installed at the installation line trough (1), and after the water of the industrial chiller (16) on one side is used up, the three-way valves (20) on both sides can be started to replace the pipeline, so that the industrial chiller (16) on the other side pumps cold water into the water cooling pipe (17) and then returns to the other industrial chiller (16) through the return pipe (21) for recycling, so that the installation line trough (1) and the cables inside it can be cooled again; The method of use includes the following steps: S1: The load-bearing tube (3) and the load-bearing rod (4) can be telescopically adjusted in length, and the mounting frame (5) can be installed on the roof or the bracket inside the house by means of bolts, so that the placement bracket (2) can be evenly installed on the roof inside the factory building according to the cable laying position, and a shock-absorbing suspension rod (6) is provided at the gap between the placement bracket (2) and the connecting plate (7), and the shock-absorbing suspension rod (6) can provide shock-absorbing protection for the placement cable trough (1) connected at the bottom; S2: The flange edges (12) of adjacent installation cable troughs (1) can be connected by bolts, so that the installation cable troughs (1) can be spliced ​​into a cable routing trough, and the water cooling pipe (17) is evenly laid in the pipe laying groove (18). The pipe laying groove (18) is evenly provided with heat dissipation fins (14), so that the water cooling pipe (17) can be laid in the pipe laying groove (18) in an S shape. After laying, the heat transfer plate (13) can be covered. The top of the heat transfer plate (13) is evenly provided with a partition plate (15) for separating cables. After the cables are laid, the cable trough cover plate (9) can be installed on the top of the installation cable trough (1). The installation cable trough (1) can be connected to the connecting plate (7) by bolts, so that the installation cable trough (1) can be hoisted on the top of the room; S3: The cable trough (1) and the cable trough cover (9) are both provided with a heat insulating cotton layer (10) and an inorganic fireproof board (11) to isolate the heat of the outer wall, thereby providing heat insulation protection for the internal cables, and a temperature detector (22) can detect the temperature inside the cable trough (1); S4: When the temperature detector (22) detects that the cable storage temperature is high, the water pump (19) of the industrial chiller (16) on one side can be started. The water pump (19) can pump the coolant into the water cooling pipe (17). The water cooling pipe (17) is evenly laid in the pipe laying groove (18) and can perform heat exchange cooling on the cables inside the cable trough (1) through the heat dissipation fins (14) and the heat transfer plate (13), thereby maintaining the sealing protection and heat insulation effect of the cable trough (1) while performing heat dissipation treatment on the cables inside the cable trough (1).

2. According to claim 1, an electrical engineering cable protection device and a method of using the same are characterized in that: The load-bearing cylinder (3) is evenly provided with waist-shaped holes, and the load-bearing rod (4) is provided with through holes corresponding to the waist-shaped holes.

3. The electrical engineering cable protection device according to claim 1, characterized in that: A protective sleeve (8) is fixedly installed at the gap between the connecting plate (7) and the mounting bracket (2), and the protective sleeve (8) wraps the shock-absorbing suspension rod (6).

4. The electrical engineering cable protection device according to claim 1, characterized in that: A partition plate (15) is evenly fixedly installed on the top of the heat transfer plate (13), and the heat transfer plate (13) can be divided into cable channels by the partition plate (15).

5. The electrical engineering cable protection device according to claim 1, characterized in that: The detection end of the temperature detector (22) is inserted through the heat transfer plate (13) to fit the cable placement position, and is inserted into the connection for sealing.

6. The electrical engineering cable protection device according to claim 1, characterized in that: The heat dissipation fins (14) are evenly and staggeredly arranged on the inner wall of the pipeline laying groove (18).

7. The electrical engineering cable protection device according to claim 1, characterized in that: The heat transfer plate (13) is tightly fitted to the heat dissipation fins (14).

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