Electric workover rig thermal management system and method

Abstract

The invention discloses a thermal management system and method for an electric workover rig, and relates to the technical field of thermal management of electric workover rigs. The system comprises a water cooling unit which is communicated with a cooling cavity of a battery or an electric control assembly through a circulating pipeline and can exchange heat with the battery or the electric control assembly by adopting circularly flowing cooling liquid; the fan is arranged on one side of the battery or the electric control assembly and can conduct air cooling on the battery or the electric control assembly. The thermal management system of the electric workover rig is matched with the thermal management method of the thermal management system, thermal management of the battery, the electric control assembly and the like can be achieved, and then heat dissipation of the battery and the electric control assembly is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of thermal management of electric workover rigs, and in particular to a thermal management system and method for an electric workover rig. Background Art

[0002] Electric workover rigs are more environmentally friendly than diesel workover rigs. However, the batteries and electronic control assemblies of electric workover rigs tend to generate heat after working for a long time. Currently, there is no corresponding heat dissipation equipment, which affects the overall service life. Therefore, it is urgent to design a thermal management system for electric workover rigs to achieve thermal management of batteries and electronic control assemblies, so as to achieve heat dissipation of batteries and electronic control assemblies. Summary of the invention

[0003] The purpose of the present invention is to provide a thermal management system and method for an electric workover rig to solve the problems existing in the above-mentioned prior art, and to achieve thermal management of batteries and electronic control assemblies, thereby achieving heat dissipation of batteries and electronic control assemblies.

[0004] To achieve the above object, the present invention provides the following solutions:

[0005] The present invention provides a thermal management system for an electric workover rig, comprising:

[0006] A water cooling unit, which is connected to the cooling chamber of the battery or the electronic control assembly through a circulation pipeline, and can use circulating coolant to exchange heat with the battery or the electronic control assembly;

[0007] The fan is arranged on one side of the battery or the electronic control assembly and can cool the battery or the electronic control assembly.

[0008] Preferably, there are two water cooling units, namely a first water cooling unit and a second water cooling unit; the cooling chamber of the battery is connected to the first water cooling unit through a first circulation pipeline, and the cooling chamber of the electronic control assembly is connected to the second water cooling unit through a second circulation pipeline.

[0009] Preferably, one fan is provided on each side of the battery and the electronic control assembly.

[0010] Preferably, the first circulation pipeline includes three first branches in parallel, and a control valve is provided on the first branch; one end of the three first branches is connected to the water outlet main pipe of the first water cooling unit, and the other end is respectively connected to the cooling chambers of three batteries, the water outlets of the cooling chambers of the three batteries are connected to the cooling chamber of the charger, and the cooling chamber of the charger is connected to the return water main pipe of the first water cooling unit.

[0011] Preferably, a pressure sensor and a filter are provided on the water outlet main pipe of the first water cooling unit.

[0012] Preferably, an expansion water tank is provided between the cooling chamber of the charger and the return water main of the first water cooling unit; a three-way valve is provided at the outlet end of the cooling chamber of the charger, a first port of the three-way valve is connected to the exhaust end of the expansion water tank, a second port of the three-way valve is connected to the return water main of the first water cooling unit, and a control valve is provided at the connecting end, and the water outlet of the expansion water tank is connected to the return water main of the first water cooling unit.

[0013] Preferably, the second circulation pipeline includes two parallel first branches, and a control valve is provided on the first branch; one end of the two first branches is connected to the water outlet main pipe of the second water cooling unit, and the other end is respectively connected to the controller of the electronic control assembly and the cooling chamber of the drive motor, and the water outlet of the cooling chamber of the controller of the electronic control assembly and the drive motor is connected to the return water main pipe of the second water cooling unit.

[0014] Preferably, a pressure sensor and a filter are provided on the water outlet main pipe of the second water cooling unit.

[0015] Preferably, the water outlets of the cooling chambers of the controller of the electronic control assembly and the drive motor are connected to a return pipe of the electronic control assembly, and an expansion water tank is provided between the return pipe of the electronic control assembly and the return water main of the second water-cooling unit; the return pipe of the electronic control assembly is provided with a three-way valve, a first port of the three-way valve is connected to the exhaust end of the expansion water tank, a second port of the three-way valve is connected to the return water main of the second water-cooling unit, and a control valve is provided at the connecting end, and the water outlet of the expansion water tank is connected to the return water main of the second water-cooling unit.

[0016] The present invention also provides a thermal management method for an electric workover rig, comprising the following steps:

[0017] When the operating temperature of the battery or electronic control assembly rises in winter, close the control valve and start the corresponding fan to dissipate heat;

[0018] When the temperature of the battery or electronic control assembly is too low in winter, the control valve is opened, the electric heating wire is started to heat the coolant in the corresponding circulation pipeline, and the coolant is transported to the cooling chamber of the battery or electronic control assembly to achieve temperature increase. The structure and arrangement of the electric heating wire belong to the existing technology, which is integrated in the battery and can be controlled to start and stop by the existing program of the control system;

[0019] When the operating temperature of the battery or electronic control assembly rises in summer, the control valve is opened, and the coolant is cooled by the corresponding water cooling unit, and the battery or electronic control assembly is cooled through the circulation pipeline.

[0020] Compared with the prior art, the present invention has achieved the following technical effects:

[0021] The present invention connects the cooling chamber of the battery or the electronic control assembly in series with the water cooling unit through respective circulation pipelines, so that when the temperature of the battery or the electronic control assembly is too high due to operation, the circulating coolant can be used to reduce the temperature; at the same time, fans are respectively arranged on one side of the battery or the electronic control assembly, and when the temperature of the battery or the electronic control assembly rises and needs to be cooled in winter, the fans can be started to achieve air cooling; in summer, the coolant water cooling and the fan air cooling can also be used to work together to improve the cooling efficiency, thereby achieving temperature regulation of the battery or the electronic control assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 A schematic diagram of the arrangement of a first cooling unit and a battery in one embodiment of a thermal management system for an electric workover rig of the present invention;

[0024] Figure 2 The figure is a schematic diagram of the arrangement of the second cooling unit and the electronic control assembly in one embodiment of the thermal management system of the electric workover rig of the present invention.

[0025] In the figure: 1-first water cooling unit, 2-second water cooling unit, 3-first circulation pipeline, 4-second circulation pipeline, 5-control valve, 6-filter, 7-expansion tank, 8-fan, 9-battery, 10-electronic control assembly, 11-charger, 12-pressure sensor. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] The purpose of the present invention is to provide a thermal management system and method for an electric workover rig to solve the problems existing in the above-mentioned prior art, and to achieve thermal management of batteries and electronic control assemblies, thereby achieving heat dissipation of batteries and electronic control assemblies.

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] When the electric workover machine works for a long time, the battery and the electronic control assembly will generate a lot of heat, causing the battery and the electronic control assembly to heat up. The battery and the electronic control assembly are conventional structures of the electric workover machine and will not be described in detail. Excessive temperature will affect the normal use of the equipment and bring safety hazards. In order to avoid this problem, this embodiment provides a thermal management system for the electric workover machine, referring to Figure 1 and Figure 2 As shown, it includes two water cooling units, which are mature and known structures, so they are not described in detail. The two water cooling units are connected to the cooling chambers of the battery 9 and the electronic control assembly 10 through their respective circulation pipelines, and can use circulating coolant to exchange heat with the battery 9 or the electronic control assembly 10; a fan 8 is provided on one side of the battery 9 or the electronic control assembly 10, which can air-cool the battery 9 or the electronic control assembly 10. When the temperature of the battery 9 or the electronic control assembly 10 is too high due to work, the circulating coolant can be used to cool it down; at the same time, a fan 8 is provided on one side of the battery 9 or the electronic control assembly 10, and when the temperature of the battery 9 or the electronic control assembly 10 rises in winter and needs to be cooled down, the fan 8 can be started to achieve air cooling; in summer, the coolant water cooling and the air cooling of the fan 8 can also be used to work together to improve the cooling efficiency and achieve temperature regulation of the battery 9 or the electronic control assembly 10.

[0030] In a specific embodiment, the two water cooling units are respectively a first water cooling unit 1 and a second water cooling unit 2; the cooling chamber of the battery 9 is connected to the first water cooling unit 1 through a first circulation pipeline 3, and the cooling chamber of the electronic control assembly 10 is connected to the second water cooling unit 2 through a second circulation pipeline 4. The water outlet main pipes of the first water cooling unit 1 and the second water cooling unit 2 are both provided with a pressure sensor 12 and a filter 6, and the filter 6 is a mature structure, and a filter screen is provided therein for filtering the circulating coolant. The first circulation pipeline 3 includes three first branches in parallel, and a control valve 5 is provided on the first branch; one end of the three first branches is connected to the water outlet main of the first water cooling unit 1, and the other end is connected to the cooling chambers of the three batteries 9 respectively, and the water outlets of the cooling chambers of the three batteries 9 are connected to the cooling chamber of the charger 11, and an expansion water tank 7 is provided between the cooling chamber of the charger 11 and the return water main of the first water cooling unit 1; a three-way valve is provided at the outlet end of the cooling chamber of the charger 11, and the first port of the three-way valve is connected to the exhaust end of the expansion water tank 7, and the second port of the three-way valve is connected to the return water main of the first water cooling unit 1, and the connection end is provided with a control valve 5, and the water outlet of the expansion water tank 7 is connected to the return water main of the first water cooling unit 1.

[0031] The second circulation pipeline 4 includes two parallel first branches, and a control valve 5 is provided on the first branch; one end of the two first branches is connected to the water outlet main of the second water-cooling unit 2, and the other end is connected to the controller of the electronic control assembly 10 and the cooling chamber of the drive motor respectively, and the water outlets of the cooling chamber of the controller of the electronic control assembly 10 and the drive motor are connected with the return pipe of the electronic control assembly 10, and an expansion water tank 7 is provided between the return pipe of the electronic control assembly 10 and the return water main of the second water-cooling unit 2; the return pipe of the electronic control assembly 10 is provided with a three-way valve, the first port of the three-way valve is connected to the exhaust end of the expansion water tank 7, the second port of the three-way valve is connected to the return water main of the second water-cooling unit 2, and the connection end is provided with a control valve 5, and the water outlet of the expansion water tank 7 is connected to the return water main of the second water-cooling unit 2; in a specific embodiment, the control valve 5 adopts a flow regulating valve to adjust the flow of the coolant.

[0032] The present invention also provides a thermal management method for an electric workover rig, comprising the following steps:

[0033] In winter, when the operating temperature of the battery 9 or the electronic control assembly 10 rises, the control valve 5 is closed and the corresponding fan 8 is started to dissipate heat;

[0034] When the temperature of the battery 9 or the electronic control assembly 10 is too low in winter, the control valve 5 is opened, the electric heating wire is started to heat the coolant in the corresponding circulation pipeline, and the coolant is transported to the cooling chamber of the battery 9 or the electronic control assembly 10 to achieve temperature increase;

[0035] In summer, when the operating temperature of the battery 9 or the electronic control assembly 10 rises, the control valve 5 is opened, and the corresponding water cooling unit is used to cool the coolant, and the battery 9 or the electronic control assembly 10 is cooled through the circulation pipeline; when the coolant temperature is too high due to heat exchange with the battery 9 or the electronic control assembly 10, resulting in excessive pressure, the control valve 5 at the return water main is closed, so that the coolant flows into the expansion water tank 7, exhausts and reduces the pressure, and then flows into the water cooling unit. The coolant can also be added to the water cooling unit through the expansion water tank 7. The coolant of the present invention uses water.

[0036] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A thermal management system for an electric workover rig, characterized in that: include: A water cooling unit, which is connected to the cooling chamber of the battery or the electronic control assembly through a circulation pipeline, and can use circulating coolant to exchange heat with the battery or the electronic control assembly; The fan is arranged on one side of the battery or the electronic control assembly and can cool the battery or the electronic control assembly.

2. The thermal management system of the electric workover rig according to claim 1, characterized in that: There are two water cooling units, namely a first water cooling unit and a second water cooling unit; the cooling chamber of the battery is connected to the first water cooling unit through a first circulation pipeline, and the cooling chamber of the electronic control assembly is connected to the second water cooling unit through a second circulation pipeline.

3. The thermal management system of the electric workover rig according to claim 1, characterized in that: A fan is respectively provided on one side of the battery and the electronic control assembly.

4. The thermal management system of the electric workover rig according to claim 2, characterized in that: The first circulation pipeline includes three first branches connected in parallel, and a control valve is provided on the first branch; one end of the three first branches is connected to the water outlet main pipe of the first water cooling unit, and the other end is connected to the cooling chambers of three batteries respectively, the water outlets of the cooling chambers of the three batteries are connected to the cooling chamber of the charger, and the cooling chamber of the charger is connected to the return water main pipe of the first water cooling unit.

5. The thermal management system of the electric workover rig according to claim 4, characterized in that: A pressure sensor and a filter are provided on the water outlet main pipe of the first water cooling unit.

6. The thermal management system of the electric workover rig according to claim 4, characterized in that: An expansion water tank is provided between the cooling chamber of the charger and the return water main of the first water cooling unit; a three-way valve is provided at the outlet end of the cooling chamber of the charger, a first port of the three-way valve is connected to the exhaust end of the expansion water tank, a second port of the three-way valve is connected to the return water main of the first water cooling unit, and a control valve is provided at the connecting end, and the water outlet of the expansion water tank is connected to the return water main of the first water cooling unit.

7. The thermal management system of the electric workover rig according to claim 2, characterized in that: The second circulation pipeline includes two parallel first branches, and a control valve is provided on the first branch; one end of the two first branches is connected to the water outlet main pipe of the second water cooling unit, and the other end is respectively connected to the controller of the electronic control assembly and the cooling chamber of the drive motor, and the water outlet of the cooling chamber of the controller of the electronic control assembly and the drive motor is connected to the return water main pipe of the second water cooling unit.

8. The thermal management system of the electric workover rig according to claim 7, characterized in that: A pressure sensor and a filter are provided on the water outlet main pipe of the second water cooling unit.

9. The thermal management system of the electric workover rig according to claim 7, characterized in that: The controller of the electronic control assembly and the cooling chamber water outlet of the drive motor are connected with the electronic control assembly return pipe, and an expansion water tank is arranged between the electronic control assembly return pipe and the return water main of the second water cooling unit; the electronic control assembly return water pipe is provided with a three-way valve, the first port of the three-way valve is connected to the exhaust end of the expansion water tank, the second port of the three-way valve is connected to the return water main of the second water cooling unit, and a control valve is arranged at the connecting end, and the water outlet of the expansion water tank is connected to the return water main of the second water cooling unit.

10. A thermal management method for an electric workover rig, characterized in that: The steps include: When the operating temperature of the battery or electronic control assembly rises in winter, close the control valve and start the corresponding fan to dissipate heat; When the temperature of the battery or electronic control assembly is too low in winter, the control valve is opened, the electric heating wire is started to heat the coolant in the corresponding circulation pipeline, and then transported to the cooling chamber of the battery or electronic control assembly to achieve temperature increase; When the operating temperature of the battery or electronic control assembly rises in summer, the control valve is opened, and the coolant is cooled by the corresponding water cooling unit, and the battery or electronic control assembly is cooled through the circulation pipeline.

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