Inflation and exhaust control device for air tightness test of thermal insulation pipeline

Abstract

The utility model provides an inflation and exhaust control device for an air tightness test of a thermal insulation pipeline, which belongs to the technical field of sealing experiment equipment and comprises a box body and a cover body arranged on the box body, a main pipeline and an exhaust pipeline are arranged in the box body, one end of the main pipeline is an air inlet end, and the other end of the main pipeline is an air outlet end; a first electromagnetic valve is arranged on the main pipeline, and a second electromagnetic valve is arranged on the exhaust pipeline; the side wall of the box body is provided with an air inlet, an air outlet and an air outlet which are respectively communicated with the air exhaust pipeline, the air inlet end of the main pipeline and the air outlet end of the main pipeline; side plates are fixedly arranged on the two sides of the cover body respectively; the inner side of each side plate is provided with a plurality of protruding parts, and the side wall of the box body is provided with a plurality of inserting grooves matched with the protruding parts in an inserted mode. When the pipeline in the box body leaks air, the side plate is pulled outwards to enable the protruding part to be separated from the inserting groove, the cover body and the side plate can be detached from the box body, and an operator can maintain the pipeline in the box body conveniently.

Description

Technical Field

[0001] The utility model belongs to the technical field of sealing test equipment, and in particular relates to a filling and exhaust control device for an air tightness test of a heat preservation pipeline. Background Art

[0002] The air tightness test of direct-buried insulated pipes is to test the sealing performance of the pipes themselves and the pipe connectors, and to help detect possible leakage problems in the pipe system. In the prior art, the Chinese utility model patent with application number 201920165926.4 discloses a portable inflation device for air tightness test of pipe insulation joints, including an inflation interface and a sealing plug, one end of the inflation interface is provided with a quick-connect connector, the inner side of the sealing plug is provided with a through hole, and the outer ring of the through hole is nested in the inner ring, the other end of the inflation tube is inserted into the through hole on the sealing plug, and a compression piece is provided on the sealing plug, and a rubber column is provided between the inner ring and the sealing plug.

[0003] The above-mentioned inflatable device needs to be used in conjunction with a gas control device, which can regulate the pressure of the pressurized gas and pass the regulated pressurized gas into the inflatable device; after maintaining the pressure for a certain period of time, the gas control device can connect the inflatable device to the atmosphere to achieve the exhaust process. The control pipelines of the gas control device in the prior art are all placed in the box, and the cover on the box is fixed by bolts; in the event of air leakage in the control pipeline, the operator needs to remove all the bolts; after the maintenance is completed, all the bolts need to be tightened, which has low maintenance efficiency. Utility Model Content

[0004] The embodiment of the utility model provides a filling and exhaust control device for an insulated pipe air tightness test, aiming to solve the technical problem of low disassembly and assembly efficiency of the gas control device in the prior art during maintenance.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] Provided is an inflation and exhaust control device for an air tightness test of an insulated pipe, comprising a box body and a cover body arranged on the box body, wherein a main line and an exhaust line are arranged in the box body, one end of the main line is an air inlet end, and the other end is an air outlet end, and the air outlet end is used to communicate with an inflation device; a first solenoid valve is arranged on the main line, and a second solenoid valve is arranged on the exhaust line; one end of the exhaust line is connected to the main line and is located between the first solenoid valve and the air outlet end; an air inlet, an air outlet and an exhaust port are arranged on the side wall of the box body, which are respectively connected to the exhaust line, the air inlet end of the main line and the air outlet end of the main line; side panels are fixedly provided on both sides of the cover body, and the side panels are elastic; a plurality of protrusions are arranged on the inner side of the side panels, and a plurality of slots are arranged on the side wall of the box body to be plugged into and matched with the protrusions.

[0007] In a possible implementation, an elastic component is provided on the inner side wall of the connection position between the cover body and the side panel, and the elastic component is detachably connected to the cover body and the side panel respectively.

[0008] In a possible implementation, the cross-section of the elastic component is triangular, one side of the elastic component contacts the cover body, the other side of the elastic component contacts the side plate, and the inclined surface of the elastic component contacts the box body; the elastic component is provided with a T-shaped block or a wedge-shaped block, and the cover body and the side plate are respectively provided with a T-shaped groove or a wedge-shaped groove that is plugged into and cooperates with the T-shaped block or the wedge-shaped block.

[0009] In a possible implementation, the bottom of the box body has a support column, the bottoms of the two side panels are connected to grab plates, the bottoms of the grab plates are lower than the bottom of the box body, and the bottoms of the grab plates are higher than the bottoms of the support columns.

[0010] In a possible implementation, a hook is hinged on the grab plate, and the support column has a limiting hole that is plugged into and cooperates with the hook; the limiting hole is an arc-shaped hole with the hook hinge axis as the rotation axis.

[0011] In a possible implementation, the box body is connected with quick connectors at the connection points of the air inlet end, the air outlet end and the exhaust pipeline, and the quick connectors are used to be connected to the air pipe.

[0012] In a possible implementation, a digital pressure gauge is provided on the main pipe, a control module is provided in the box, and the control module is electrically connected to the first solenoid valve, the second solenoid valve and the digital pressure gauge.

[0013] In a possible implementation, a pressure regulating valve is further provided in the box body, and a pressure regulating knob of the pressure regulating valve passes through a side wall of the box body; the pressure regulating valve is arranged on the main pipe, and the pressure regulating valve is electrically connected to the control module.

[0014] In a possible implementation, a wireless transceiver module is provided on the box, and the wireless transceiver module is electrically connected to the control module.

[0015] In a possible implementation, a lifting portion is provided on the top of the cover body, and the lifting portion is fixedly connected to the cover body.

[0016] The utility model provides a kind of insulated pipe air tightness test charging and exhaust control device. Compared with the prior art, when the insulated pipe is subjected to the air tightness test, the air inlet pipe is connected with the air inlet end of the main line, and then the first solenoid valve is opened and the second solenoid valve is closed, and the pressure gas can enter the charging device from the main line, and then the test part of the insulated pipe is inflated; after the pressure of the test part of the insulated pipe reaches the preset value, the first solenoid valve is closed, and the pressure is maintained at this time; after the preset pressure maintenance time, the second solenoid valve is opened, and the pressure gas of the test part of the insulated pipe will be discharged into the atmosphere after the main line and the exhaust line, and the pressure relief process is completed. When the pipeline in the box body leaks, the protrusion can be separated from the slot by bending the side plate outward, and then the cover body and the side plate can be removed from the box body; after the cover body and the side plate are removed, it is convenient for the operator to repair the pipeline in the box body; after the repair is completed, the protrusion can be plugged and matched with the slot by bending the side plate, and the installation between the cover body and the box body is completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of a device for controlling the filling and exhausting of an insulated pipe for air tightness testing provided by an embodiment of the utility model;

[0018] Figure 2 A schematic diagram of a grab plate portion of a filling and exhaust control device for an air tightness test of an insulation pipeline provided by an embodiment of the utility model;

[0019] Figure 3 for Figure 2 The enlarged schematic diagram of the middle A part;

[0020] Figure 4 for Figure 2 The enlarged schematic diagram of the middle B part;

[0021] Figure 5 A schematic diagram of a protruding portion of a filling and exhausting control device for an air tightness test of an insulated pipe provided by an embodiment of the utility model;

[0022] Figure 6 A gas circuit diagram of a filling and exhaust control device for an air tightness test of an insulation pipeline provided by an embodiment of the utility model;

[0023] Figure 7 A schematic diagram of a touch screen display portion of an insulated pipe air tightness test filling and exhaust control device provided in an embodiment of the utility model.

[0024] Explanation of the accompanying drawings: 1. Box body; 11. Air inlet; 12. Air outlet; 13. Exhaust port; 14. Slot; 15. Wireless transceiver module; 16. Lifting part; 17. Support column; 171. Limiting hole; 18. Quick connector; 19. Touch screen; 2. Cover body; 21. T-slot; 3. Main line; 31. Air inlet end; 32. Air outlet end; 33. First solenoid valve; 34. Pressure regulating valve; 341. Pressure regulating knob; 4. Exhaust line; 41. Second solenoid valve; 5. Side panel; 51. Protrusion; 52. Grab plate; 53. Hook; 6. Elastic component; 61. T-block. DETAILED DESCRIPTION

[0025] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0026] Please also read Figures 1 to 7 Now, a filling and exhaust control device for an air tightness test of an insulation pipe provided by the utility model is described. The described insulated pipe air tightness test charging and exhaust control device comprises a box body 1 and a cover body 2 arranged on the box body 1, wherein the box body 1 has a main line 3 and an exhaust line 4, one end of the main line 3 is an air inlet end 31, and the other end is an air outlet end 32, and the air outlet end 32 is used to communicate with the charging device; a first solenoid valve 33 is provided on the main line 3, and a second solenoid valve 41 is provided on the exhaust line 4; one end of the exhaust line 4 is connected to the main line 3 and is located between the first solenoid valve 33 and the air outlet end 32; an air inlet 11, an air outlet 12 and an exhaust port 13 are respectively provided on the side wall of the box body 1, which are connected to the exhaust line 4, the air inlet end 31 of the main line 3, and the air outlet end 32 of the main line 3; side panels 5 are respectively fixed on both sides of the cover body 2, and the side panels 5 are elastic; the inner side of the side panels 5 has a plurality of protrusions 51, and the side wall of the box body 1 has a plurality of slots 14 that are plugged and matched with the protrusions 51.

[0027] The utility model provides an inflation and exhaust control device for an air tightness test of an insulated pipe. Compared with the prior art, when the air tightness test is carried out on the insulated pipe, the air inlet pipe is connected to the air inlet end 31 of the main pipe 3, and then the first solenoid valve 33 is opened and the second solenoid valve 41 is closed, so that the pressurized gas can enter the inflation device from the main pipe 3, and then the test part of the insulated pipe is inflated; after the pressure of the test part of the insulated pipe reaches a preset value, the first solenoid valve 33 is closed, and the pressure is maintained at this time; after the preset pressure maintenance time, the second solenoid valve 41 is opened, and the pressurized gas in the test part of the insulated pipe is discharged into the atmosphere after passing through the main pipe 3 and the exhaust pipe 4, thereby completing the pressure relief process. When there is a leak in the pipeline in the box body 1, the protrusion 51 can be separated from the slot 14 by bending the side panel 5 outward, and then the cover body 2 and the side panel 5 can be removed from the box body 1; after the cover body 2 and the side panel 5 are removed, it is convenient for the operator to repair the pipeline in the box body 1; after the repair is completed, the protrusion 51 can be plugged into the slot 14 by bending the side panel 5, completing the installation between the cover body 2 and the box body 1.

[0028] In some embodiments, Figures 1 to 7 As shown, a digital pressure gauge is provided on the main line 3, a control module is provided in the box 1, and the control module is electrically connected to the first solenoid valve 33, the second solenoid valve 41 and the digital pressure gauge; a pressure regulating valve 34 is also provided in the box 1, and a pressure regulating knob 341 of the pressure regulating valve 34 passes through the side wall of the box 1; the pressure regulating valve 34 is provided on the main line 3, and the pressure regulating valve 34 is electrically connected to the control module; a wireless transceiver module 15 is provided on the box 1, and the wireless transceiver module 15 is electrically connected to the control module; a lifting portion 16 is provided on the top of the cover 2, and the lifting portion 16 is fixedly connected to the cover 2. By providing the lifting portion 16, it is convenient for operators to carry the box 1.

[0029] It should be noted that after the pressurized gas enters the main line 3, the pressure of the pressurized gas can be regulated by the pressure regulating valve 34. After the first solenoid valve 33 is opened, the pressure-regulated pressurized gas can enter the inflatable device from the main line 3; after the pressure in the inflatable device reaches the preset value, the first solenoid valve 33 is closed, and the pressure is maintained at this time. The operator can spray soapy water on the joint of the insulation pipe to determine whether there is a leak at the joint. After the pressure is maintained, the second solenoid valve 41 is opened, so that the pressurized gas in the inflatable device can be discharged through the main line 3 and the exhaust line 4, completing the pressure relief process; by setting a wireless transceiver module 15 on the box body 1, the control module can transmit data to other electronic devices through the wireless transceiver module 15.

[0030] In addition, if Figures 1 to 7As shown, a touch screen 19 is provided on the box 1, and the touch screen 19 is electrically connected to the control module; the operator can set the test pressure and pressure holding time of the test object through the touch screen 19, and the pressure curve during the test, and each test object is set with a unique number, and the number corresponds to the airtight test one by one.

[0031] In some embodiments, Figures 1 to 7 As shown, an elastic component 6 is provided on the inner side wall of the connection position between the cover body 2 and the side plate 5, and the elastic component 6 is detachably connected to the cover body 2 and the side plate 5, respectively. The cross section of the elastic component 6 is triangular, one side of the elastic component 6 contacts the cover body 2, the other side of the elastic component 6 contacts the side plate 5, and the inclined surface of the elastic component 6 contacts the box body 1; the elastic component 6 has a T-shaped block 61 or a wedge-shaped block, and the cover body 2 and the side plate 5 have a T-shaped slot 21 or a wedge-shaped slot respectively plugged with the T-shaped block 61 or the wedge-shaped block.

[0032] In this embodiment, the T-shaped block 61 and the T-shaped groove 21 are used as an example for explanation. The T-shaped block 61 is a rigid structure, which can strengthen the connection between the T-shaped block 61 and the cover body 2 and the side panel 5; the elastic component 6 is elastic, and when the side panel 5 is bent outward, the elastic component 6 can be elastically deformed; after the external force is removed, the side panel 5 is reset under the elastic force of the elastic component 6, so that the protrusion 51 can be plugged into and matched with the slot 14.

[0033] It should be noted that the elastic component 6 is plugged into the T-slots 21 of the cover body 2 and the side plate 5 through the T-block 61, which facilitates the disassembly and assembly of the elastic component 6. When the elastic component 6 is damaged, a new elastic component 6 can be replaced in time.

[0034] In some embodiments, Figures 1 to 7 As shown, the bottom of the box body 1 has a support column 17 , and the bottoms of the two side panels 5 are connected with grab plates 52 , the bottoms of the grab plates 52 are lower than the bottom of the box body 1 , and the bottoms of the grab plates 52 are higher than the bottoms of the support columns 17 .

[0035] It should be noted that, by providing a gripping plate 52 at the bottom of the side plate 5 , it is convenient for the operator to grip the gripping plate 52 , and then convenient for the operator to bend the side plate 5 outwards, so that the protrusion 51 is separated from the slot 14 on the box body 1 .

[0036] In some embodiments, Figures 1 to 7 As shown, a hook 53 is hinged on the grab plate 52, and a limiting hole 171 is provided on the support column 17 to be plugged with the hook 53; the limiting hole 171 is an arc-shaped hole with the hinge axis of the hook 53 as the rotation axis.

[0037] It should be noted that after the protrusion 51 on the side panel 5 and the slot 14 on the box body 1 are plugged into each other, the free end of the hook 53 can be inserted into the limiting hole 171 by rotating the hook 53, thereby limiting the side panel 5 and reducing the outward displacement of the side panel 5.

[0038] In some embodiments, Figures 1 to 7 As shown, the box body 1 is connected to quick connectors 18 at the connection points of the air inlet end 31, the air outlet end 32 and the exhaust pipe 4, and the quick connectors 18 are used to connect to the air pipe.

[0039] It should be noted that by providing the quick connector 18 on the box body 1, it is convenient to fix the air pipe on the quick connector 18, and it is also convenient to remove the air pipe from the quick connector 18. The structure of the quick connector 18 is prior art and will not be described in detail here.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A control device for filling and exhausting air in a heat-insulated pipe air tightness test, comprising a box body and a cover body arranged on the box body, wherein the box body is provided with a main pipeline and an exhaust pipeline, one end of the main pipeline is an air inlet end, and the other end is an air outlet end, and the air outlet end is used to communicate with an inflation device; a first solenoid valve is provided on the main pipeline, and a second solenoid valve is provided on the exhaust pipeline; one end of the exhaust pipeline is connected to the main pipeline and is located between the first solenoid valve and the air outlet end; an air inlet, an air outlet and an exhaust port are provided on the side wall of the box body, which are respectively connected with the exhaust pipeline, the air inlet end of the main pipeline and the air outlet end of the main pipeline; characterized in that Side plates are fixedly provided on both sides of the cover body, and the side plates are elastic. The inner sides of the side plates are provided with a plurality of protrusions, and the side walls of the box body are provided with a plurality of slots which are plugged and matched with the protrusions.

2. The device for controlling the filling and exhausting of the air tightness test of the heat-insulated pipe according to claim 1, characterized in that: An elastic component is provided on the inner side wall of the connection position between the cover body and the side plate, and the elastic component is detachably connected to the cover body and the side plate respectively.

3. A device for controlling the filling and exhausting of an insulated pipe during air tightness test according to claim 2, characterized in that: The cross-section of the elastic component is triangular, one side of the elastic component contacts the cover body, the other side of the elastic component contacts the side plate, and the inclined surface of the elastic component contacts the box body; the elastic component is provided with a T-shaped block or a wedge-shaped block, and the cover body and the side plate are respectively provided with a T-shaped groove or a wedge-shaped groove that is plugged into and matched with the T-shaped block or the wedge-shaped block.

4. The device for controlling the filling and exhausting of the air tightness test of the heat-insulated pipe according to claim 1, characterized in that: The bottom of the box body is provided with a support column, and the bottoms of the two side panels are connected with a grab plate, the bottom of the grab plate is lower than the bottom of the box body, and the bottom of the grab plate is higher than the bottom of the support column.

5. The device for controlling the filling and exhausting of the air tightness test of the heat-insulated pipe according to claim 4, characterized in that: A hook is hinged on the grab plate, and a limiting hole for plugging and cooperating with the hook is provided on the support column; the limiting hole is an arc-shaped hole with the hook hinge axis as the rotation axis.

6. The device for controlling the filling and exhausting of the air tightness test of the heat-insulated pipe according to claim 1, characterized in that: The box body is connected with quick-connect joints at the connection points of the air inlet end, the air outlet end and the exhaust pipeline, and the quick-connect joints are used to be connected with the air pipe.

7. The device for controlling the filling and exhausting of the air tightness test of the heat-insulated pipe according to claim 1, characterized in that: A digital pressure gauge is provided on the main pipe, a control module is provided in the box, and the control module is electrically connected to the first solenoid valve, the second solenoid valve and the digital pressure gauge.

8. The device for controlling the filling and exhausting of the air tightness test of the heat-insulated pipe according to claim 7, characterized in that: A pressure regulating valve is also provided in the box body, and a pressure regulating knob of the pressure regulating valve passes through the side wall of the box body; the pressure regulating valve is arranged on the main pipe, and the pressure regulating valve is electrically connected to the control module.

9. The device for controlling the filling and exhausting of the air tightness test of the heat-insulated pipe according to claim 7, characterized in that: The box body is provided with a wireless transceiver module, and the wireless transceiver module is electrically connected to the control module.

10. The device for controlling the filling and exhausting of the air tightness test of the heat-insulated pipe according to claim 1, characterized in that: A lifting portion is provided on the top of the cover body, and the lifting portion is fixedly connected to the cover body.

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