Portable instrument pipe pressure purging test trolley and system thereof

Abstract

The invention relates to the technical field of instrument pipe pressure purging, in particular to a portable instrument pipe pressure purging test trolley and a system thereof, and the portable instrument pipe pressure purging test trolley comprises a base assembly which comprises a moving part and a driving part arranged at the end part of the moving part, and the driving part drives the moving part to move; wherein a rear wheel of the moving part is an independent inflatable wheel and adopts a transverse shaft connection and spring damping mode, and a pull rod in the driving part adopts an automatic rebounding mode; the purging assembly comprises a water tank arranged at the top end of the moving part, the interior of the water tank is arranged in a partitioned mode, the pressure testing function and the purging function are integrated on one moving platform, the requirement that different devices need to be carried independently in a traditional method is eliminated, the working process is simplified, and the labor cost is reduced; and all control functions are integrated on one panel, so that the operation process is simplified.

Description

Technical Field

[0001] The present invention relates to the technical field of instrument pipe pressure purging, in particular to a portable instrument pipe pressure purging test trolley and its system. Background Art

[0002] During the construction and maintenance of nuclear power plants, it is crucial to ensure the sealing and pressure retention performance of instrument pipe systems. These systems are used to monitor and control various key parameters such as temperature, pressure, etc., so their reliability directly affects the safe operation of nuclear power plants. According to relevant national standards, after the installation of instrument pipes, purging and pressure testing must be carried out to verify whether they meet the usage requirements.

[0003] Traditional manual pressurizing devices have many limitations: the operation is not fast and accurate enough, resulting in a long test cycle; it is difficult to accurately master the applied pressure value during the test; after the pressure test is completed, additional handling or transportation of purging equipment and gas sources is required, increasing the complexity of the work and the labor cost. In addition, due to the usually crowded environment at the nuclear power construction site and frequent cross operations, the operation and transportation of large tools are restricted, which further reduces the work efficiency and may affect the construction progress. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention lies in: after the pressure test is completed, additional handling or transportation of purging equipment and gas sources is required, increasing the complexity of the work and the labor cost, and the operation and transportation of large tools are restricted. Thus, the present invention is proposed.

[0005] The above technical problem is solved by the following technical solutions: One of the purposes of the present invention is to provide a portable instrument pipe pressure purging test trolley.

[0006] To solve the above technical problem, the present invention provides the following technical solutions: including a base assembly, which includes a moving member and a driving member arranged at the end of the moving member, and the driving member drives the moving member to move. Among them, the rear wheels of the moving member are independent inflatable wheels, connected by a cross shaft and adopting a spring damping method, and the pull rod in the driving member adopts an automatic rebound method;

[0007] A purging assembly, which includes a water tank arranged at the top of the moving member. The inside of the water tank is partitioned, and an anti-foaming member is installed inside the water tank to reduce the bubbles generated by pressurization from entering the instrument pipe. A gas pump chamber is installed on the side wall of the water tank, and a small gas pump is arranged inside the gas pump chamber.

[0008] As a preferred scheme of the portable instrument pipe pressure purging test trolley of the present invention, among them: the moving member includes a frame arranged at the top of the rear wheels, and a front wheel is installed at the end of the frame. The front wheel adopts a steerable double-piece inflatable wheel.

[0009] As a preferred embodiment of the portable instrument pipe pressure purging test trolley of the present invention, wherein: the driving member includes a pull rod disposed at the top of the front wheel, a pull ring is installed at the top of the pull rod, the pull ring is arranged in a lying "8" shape, and the angle between the pull rod and the pull ring is between 130 degrees and 145 degrees.

[0010] As a preferred embodiment of the portable instrument pipe pressure purging test trolley of the present invention, wherein: the driving member further includes a hydraulic cylinder disposed between the front wheels, and the output end of the hydraulic cylinder is connected to a cross shaft between the two wheels of the front wheel.

[0011] As a preferred embodiment of the portable instrument pipe pressure purging test trolley of the present invention, wherein: the driving member further includes a fixing plate disposed on the side wall of the hydraulic cylinder, the fixing plate is connected to a wedge block through a hinge shaft, and the wedge block is connected to the pull rod.

[0012] As a preferred embodiment of the portable instrument pipe pressure purging test trolley of the present invention, wherein: the driving member further includes a pressing block disposed inside the wedge block, a top plate is installed at the bottom end of the pressing block, a telescopic rod is installed at the bottom end of the top plate, and a telescopic spring is disposed between the telescopic rod and the top plate, wherein the telescopic spring and the telescopic rod are used to drive the top plate to lift the pull rod to a vertical state.

[0013] As a preferred embodiment of the portable instrument pipe pressure purging test trolley of the present invention, wherein: the water tank is divided into two areas: a clean water area A and a gas-liquid mixing area B, wherein the clean water area A and the gas-liquid mixing area B are separated by a defoaming member, a visual glass window is installed on the side wall of the water tank, an insertion port is installed on the side wall of the visual glass window, and the water tank is installed at the top of the vehicle frame in a quick-release manner, and the water tank is made of stainless steel, wherein the vehicle frame is a hard plastic flat plate.

[0014] As a preferred embodiment of the portable instrument pipe pressure purging test trolley of the present invention, wherein: the defoaming member includes a defoaming net 202a disposed between the clean water area A and the gas-liquid mixing area B, a baffle 202b is installed on the side of the defoaming net 202a close to the gas-liquid mixing area B, and the baffle is inclined to reduce the direct impact of the air flow on the defoaming net.

[0015] As a preferred embodiment of the portable instrument pipe pressure purging test trolley of the present invention, wherein: the air pump chamber includes a delivery pipe provided at the air outlet of the small air pump, the delivery pipe is of a tee type, one of the branches of the delivery pipe is connected to an air storage tank, the air outlet of the air storage tank is connected to an external interface, wherein the end of the external interface is also connected to the delivery pipe, and the external interface is provided with a branch pipe extending into the gas-liquid mixing zone B of the water tank, and solenoid valves are provided in the delivery pipe, the air storage tank and the branch pipe.

[0016] The beneficial effects of the portable instrument pipe pressure purging test trolley of the present invention: By integrating the pressure test and purging functions onto a mobile platform, the present invention eliminates the need to separately carry different devices in the traditional method, simplifies the work process, and reduces labor costs. The base assembly is designed with independent inflatable wheels, spring shock absorption, and an automatic rebound pull rod, ensuring the stability and ease of operation of the device under various ground conditions, and is particularly suitable for environments with limited space or complex terrain. The specific angle setting between the pull rod and the pull ring, as well as the connection method between the hydraulic cylinder and the front wheel, make the steering more flexible and facilitate precise positioning; at the same time, the automatic rebound mechanism ensures safe reset after use, avoiding the risk of tripping. The purging assembly integrates a water tank partition design, an anti-foam net, and a baffle, effectively preventing bubbles from entering the clear water area A, ensuring the purity of the liquid injected into the instrument pipeline, and improving the accuracy and reliability of the pressure test. The small air pump is directly installed in the air pump chamber and, in cooperation with the air storage tank, realizes self-sufficient high-pressure air supply without the need for additional gas source equipment, further enhancing the independence and convenience of the system. The water tank is installed at the top of the vehicle frame in a quick-release manner and is made of stainless steel, which is not only easy to clean and replace but also has good corrosion resistance, extending the service life of the equipment. The overall structure is compact, and all components are reasonably arranged, which is not only convenient for storage and transportation but also occupies extremely little space during on-site use, making it very suitable for on-site operations.

[0017] In view of the fact that during the actual use process, there are still problems such as insufficiently fast and accurate operation, resulting in a longer test cycle.

[0018] To solve the above technical problems, the present invention also provides the following technical solution: An instrument pipe pressure purging test trolley system, including the above-mentioned portable instrument pipe pressure purging test trolley, further includes a control component, including an integrated operation panel provided on the outer wall of the air pump chamber, the integrated operation panel includes a display screen, a main power switch button, a pressure test switch button, an air purging switch button, and a pressure adjustment button. The information displayed on the display screen includes: status display, pressure value, test time, and pressure relief rate. On the side is a power cord outlet, which can be stretched and automatically rebound. The integrated pressure detection and display device is designed to be detachable and is connected by a quick plug:

[0019] Move the test trolley to the position of the instrument pipeline to be tested;

[0020] Connect the quick external interface of the pressure test pipe and the insertion interface of the water tank to the instrument pipeline to be tested, and perform water washing and purging through the insertion interface and the external interface;

[0021] Set the required pressure value and time through the integrated operation panel;

[0022] Start the small air pump for pressurization. When pressure testing of the instrument pipeline is required, the small air pump starts to transport gas through the branch pipe to the gas-liquid mixing area. The bubbles generated by the baffle and the defoaming net enter the clear water area A, and then the water in the clear water area A is transported to the instrument pipeline through the insertion interface for pressure testing until the set pressure value is reached; Observe and record the status display, pressure value, test time, and pressure relief rate on the display screen;

[0023] After the pressure test is completed, when purging, the small air pump transports gas to the gas storage tank, where the gas storage tank transports the gas to the external interface instrument pipeline for purging to clean the inside of the pipeline. When the air pressure of the gas storage tank reaches the set range, the small air pump stops running. When it is less than the air pressure set range, the small air pump starts to charge the gas storage tank until the set pressure value of the gas storage tank is reached; After the test is completed, disconnect the quick connector of the pressure test pipe and move the test trolley to the next working location.

[0024] Advantages of the instrument pipe pressure purging test trolley system of the present invention: By integrating a display screen with a main power switch button, a pressure test switch button, an air purging switch button, a pressure adjustment button, etc., all control functions are concentrated on one panel, simplifying the operation process and reducing the possibility of misoperation. The integrated, automated, and intelligent design significantly improves the speed and accuracy of operation, greatly shortens the test cycle, and reduces labor costs. Description of the Drawings

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for description in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. Among them:

[0026] Figure 1 It is an overall schematic diagram of a portable instrument pipe pressure purging test trolley.

[0027] Figure 2 It is a cross-sectional view of the water tank of a portable instrument pipe pressure purging test trolley.

[0028] Figure 3It is a schematic structural diagram of the air pump chamber of a portable instrument tube pressure purging test trolley.

[0029] Figure 4 It is a schematic top view structural diagram of the water tank and the air pump chamber cross-section of a portable instrument tube pressure purging test trolley.

[0030] Figure 5 It is Figure 1 The enlarged view at C in

[0031] 100. Base assembly; 101. Moving part; 102. Driving part;

[0032] 101a. Frame; 101b. Front wheel;

[0033] 102a. Pull rod; 102b. Pull ring; 102c. Hydraulic cylinder; 102d. Fixed plate; 102e. Wedge block; 102f. Pressing block; 102g. Top plate; 102h. Telescopic rod; 102i. Telescopic spring;

[0034] 200. Purging assembly; 201. Water tank; 202. Defoaming part; 203. Air pump chamber; 204. Small air pump 201a. Visual glass window; 201b. Insertion interface;

[0035] 202a. Defoaming net; 202b. Baffle; 203a. Delivery pipe; 203b. Gas storage tank; 203c. Outer interface; 203d. Branch pipe; 203e. Solenoid valve. Specific embodiments

[0036] To make the above objects, features, and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings of the specification.

[0037] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0038] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that can be included in at least one implementation manner of the present invention. The "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that excludes other embodiments.

[0039] Next, the present invention will be described in detail with reference to the schematic diagrams. When describing the embodiments of the present invention in detail, for the convenience of explanation, the cross-sectional views showing the device structure will be enlarged locally not in accordance with the general scale, and the schematic diagrams are only examples and should not limit the scope of protection of the present invention herein. In addition, in actual production, three-dimensional spatial dimensions including length, width, and depth should be included.

[0040] Embodiment 1

[0041] Referring to Figures 1 - 3 and Figure 5 This is the first embodiment of the present invention. This embodiment provides a portable instrument pipe pressure purging test trolley, which includes a unique design of the driving member 102, including components such as a hydraulic cylinder 102c, a fixing plate 102d, a hinge shaft, a wedge block 102e, a pressing block 102f, a top plate 102g, a telescopic rod 102h, and a telescopic spring 102i. These components work together to enable the pull rod 102a to drive the front wheel 101b to turn when pressed, and at the same time allow the pull rod 102a to automatically return to the vertical state by the elastic force of the telescopic spring 102i and the telescopic rod 102h when not under external force.

[0042] Specifically, the base assembly 100 includes a moving member 101 and a driving member 102 provided at the end of the moving member 101. The driving member 102 drives the moving member 101 to move. Among them, the rear wheels of the moving member 101 are independent inflatable wheels, connected by a horizontal axis and using a spring shock absorption method, while the pull rod in the driving member 102 adopts an automatic rebound method.

[0043] Furthermore, the moving member 101 includes a frame 101a provided at the top of the rear wheels. The end of the frame 101a is equipped with a front wheel 101b, and the front wheel 101b is a steerable double-piece inflatable wheel.

[0044] Furthermore, the driving member 102 includes a pull rod 102a provided at the top of the front wheel 101b. A pull ring 102b is installed at the top of the pull rod 102a. The pull ring 102b is arranged in a lying "8" shape, and the angle between the pull rod 102a and the pull ring 102b is between 130 degrees and 145 degrees.

[0045] Furthermore, the driving member 102 further includes a hydraulic cylinder 102c provided between the front wheels 101b. The output end of the hydraulic cylinder 102c is connected to the horizontal axis between the two wheels of the front wheel 101b.

[0046] Furthermore, the driving member 102 further includes a fixing plate 102d provided on the side wall of the hydraulic cylinder 102c. The fixing plate 102d is connected to the wedge block 102e through a hinge shaft, and the wedge block 102e is connected to the pull rod 102a.

[0047] Further, the driving member 102 further includes a pressing block 102f disposed inside the wedge block 102e. A top plate 102g is installed at the bottom end of the pressing block 102f, and a telescopic rod 102h is installed at the bottom end of the top plate 102g. A telescopic spring 102i is disposed between the telescopic rod 102h and the top plate 102g. The telescopic spring 102i and the telescopic rod 102h are used to drive the top plate 102g to jack up the pull rod 102a to a vertical state.

[0048] Operation process: Ensure that all components are installed in place, especially the rear wheels (independently inflatable wheels) and the front wheels 101b (steerable double-piece inflatable wheels) of the moving member 101 are in normal working condition. Check whether the pull rod 102a and its automatic return mechanism are normal, and ensure that the "8" - shaped design of the pull ring 102b is convenient for operation. The operator pulls the pull ring 102b to press down the pull rod 102a, which drives the wedge block 102e to move, compressing the telescopic spring 102i and the telescopic rod 102h, so that the hydraulic cylinder 102c drives the front wheel 101b to turn. The pull rod 102a is pushed manually or electrically to move the frame 101a, so that the whole device is moved to the side of the instrument pipeline to be tested as required. The socket 201b on the test trolley is connected to the instrument pipeline to prepare for the pressure test. Necessary test parameters are set on the integrated operation panel to prepare for the subsequent pressure test. According to the process described above, start the pressure test and purging operation, and monitor the real-time data on the display screen to ensure that everything goes smoothly. After the test is completed, close the relevant valves and disconnect the quick connectors to separate the test trolley from the instrument pipeline. The released pull rod 102a is jacked up to its original position due to the action of the telescopic spring 102i, ensuring the safety of the equipment and the effective use of the placement space. Clean and refill the water tank 201, and check the gas volume in the gas storage tank 203b. Start the small air pump 204 to supplement gas when necessary to prepare for the next use.

[0049] Embodiment 2

[0050] Refer to Figures 1 - 4, which is the second embodiment of the present invention. Different from the previous embodiment, the purging assembly 200 includes a water tank 201 disposed at the top of the moving member 101. The interior of the water tank 201 is partitioned, and an antifoaming member 202 is installed inside the water tank 201 to reduce the bubbles generated by pressurization from entering the instrument pipe. A pneumatic pump chamber 203 is installed on the side wall of the water tank 201, and a small pneumatic pump 204 is disposed inside the pneumatic pump chamber 203. The water tank 201 is designed into two areas: a clean water area A and a gas-liquid mixing area B. This partition design helps to control the state of the gas-liquid mixture when it enters the pipeline. An antifoaming member 202 is provided between the two areas, including an antifoaming net 202a and an inclined baffle 202b. The antifoaming net 202a is used to reduce the bubbles generated during the pressurization process and prevent these bubbles from directly entering the interior of the instrument pipeline to be tested; while the baffle 202b further guides the air flow direction and reduces the impact force of the air flow on the antifoaming net 202a.

[0051] Furthermore, the water tank 201 is divided into two areas: a clean water area A and a gas-liquid mixing area B. The clean water area A and the gas-liquid mixing area B are separated by an antifoaming member 202. A visual glass window 201a is installed on the side wall of the water tank 201, and an insertion port 201b is installed on the side wall of the visual glass window 201a. The water tank 201 is installed at the top of the vehicle frame 101a in a quick-release manner, and the water tank 201 is made of stainless steel, while the vehicle frame 101a is a hard plastic flat plate.

[0052] Furthermore, the antifoaming member 202 includes an antifoaming net 202a disposed between the clean water area A and the gas-liquid mixing area B. A baffle 202b is installed on the side of the antifoaming net 202a close to the gas-liquid mixing area B. The baffle 202b is inclined to reduce the direct impact of the air flow on the antifoaming net 202a.

[0053] Furthermore, the pneumatic pump chamber 203 includes a delivery pipe 203a disposed at the air outlet of the small pneumatic pump 204. The delivery pipe 203a is of a tee type. One of the connections of the delivery pipe 203a is connected to a gas storage tank 203b. The air outlet of the gas storage tank 203b is connected to an external interface 203c. The end of the external interface 203c is also connected to the delivery pipe 203a. The external interface 203c is provided with a branch pipe 203d and extends into the gas-liquid mixing area B of the water tank 201. Solenoid valves 203e are provided on the delivery pipe 203a, the gas storage tank 203b, and the branch pipe 203d. The small pneumatic pump 204 is located inside the pneumatic pump chamber 203, and it sends compressed air into the gas storage tank 203b for storage through the delivery pipe 203a. The gas storage tank 203b serves as a temporary pressure source to ensure sufficient stable air pressure supply during the purging process of the pressure test box.

[0054] When the air pressure in the gas storage tank 203b is lower than the set value, the small air pump 204 will automatically start to replenish the pressure; conversely, when the air pressure reaches or exceeds the set upper limit, the air pump stops running to ensure that the system is in a safe operating state.

[0055] It should be noted that components such as the gas storage tank 203b, the solenoid valve 203e, the delivery pipe 203a, the branch pipe 203d, and the small air pump 204 are integrated to provide high-pressure air for performing pressure tests. The design of the gas-liquid mixing zone B, combined with the defoaming net 202a, effectively prevents bubbles from entering the clear water zone A, thus ensuring that the liquid used in the test process is pure and bubble-free, improving the test accuracy. After the pressure test, the system switches to the purging mode. At this time, the high-pressure air provided by the gas storage tank 203b or the small air pump 204 enters the instrument pipeline through the external interface 203c, and the impurities and moisture in the pipeline are removed by the high-speed flowing air to achieve the purpose of cleaning.

[0056] The rest of the structure is the same as that of Embodiment 1.

[0057] Operation process: Start the pressure test switch button, and the high-pressure air in the gas storage tank 203b is controlled by the solenoid valve 203e to be released into the gas-liquid mixing zone B. The gas impact force is weakened by the baffle 202b, and the bubbles are eliminated through the defoaming net 202a. Finally, the clear water enters the instrument pipeline for cleaning and pressure testing. During this period, the user can observe the internal situation of the water tank through the visualization glass window 201a and monitor the progress by referring to the real-time data on the display screen. After the test is completed, close the corresponding valves and disconnect the quick connectors to separate the test trolley from the instrument pipeline. The elastic forces of the telescopic spring 102i and the telescopic rod 102h push up the pull rod 102a to return to its original position, reducing the risk of tripping and saving space. Clean and replenish water to the water tank 201 to prepare for the next use. If the gas in the gas storage tank 203b is insufficient, the small air pump 204 can be started to inflate it. After the pressure test is completed, replace the plug interface 201b with the external interface 203c and set the purging parameters. Start the air purging switch button or directly start the small air pump 204 to allow the high-pressure air to enter the instrument pipeline through the external interface 203c to achieve the purpose of cleaning.

[0058] Embodiment 3

[0059] Refer to Figures 1 - 5 , which is the third embodiment of the present invention. Different from the above embodiments, this embodiment provides an instrument pipe pressure purging test trolley system, including the above portable instrument pipe pressure purging test trolley. The base assembly 100 and the purging assembly 200 of the test trolley achieve the purpose of efficiently and safely purging the instrument pipeline through a carefully designed gas path system. The coordinated action between each component ensures the smooth progress of the purging process, and the integration degree of the entire system is relatively high, which is convenient for carrying and operating.

[0060] Specifically, the control component includes an integrated operation panel provided on the outer wall of the air pump chamber 203. The integrated operation panel includes a display screen, a main power switch button, a pressure test switch button, an air purge switch button, and a pressure adjustment button. The information displayed on the display screen includes: status display, pressure value, test time, and pressure relief rate. On the side is a power cord outlet, which is stretchable and automatically rebounds. The integrated pressure detection and display device is designed to be detachable and is connected by a quick plug:

[0061] Further, move the test cart to the position of the instrument pipeline to be tested;

[0062] Further, connect the quick external interface of the pressure test pipe and the insertion interface of the water tank to the instrument pipeline to be tested, and perform water washing and purging through the insertion interface and the external interface;

[0063] Set the required pressure value and time through the integrated operation panel;

[0064] Further, start the small air pump 204 to pressurize. When a pressure test needs to be performed on the instrument pipeline, the small air pump 204 starts to deliver gas through the branch pipe to the gas-liquid mixing area. The bubbles generated by the baffle 202b and the defoaming net 202a enter the clear water area A, and then the water in the clear water area A is delivered to the instrument pipeline through the insertion interface 201b for pressure testing until the set pressure value is reached; observe and record the status display, pressure value, test time, and pressure relief rate on the display screen;

[0065] Further, after the pressure test is completed, when purging, the small air pump 204 delivers gas to the gas storage tank 203b. The gas storage tank 203b delivers gas to the instrument pipeline through the external interface to purge the inside of the pipeline. When the air pressure in the gas storage tank 203b reaches the set range, the small air pump 204 stops running. When it is less than the air pressure set range, the small air pump 204 starts to press the gas storage tank 203b until the set pressure value of the gas storage tank 203b is reached; after the test is completed, disconnect the quick connector of the pressure test pipe and move the test cart to the next working location.

[0066] The remaining structures are the same as those in Embodiment 2.

[0067] Operation process: First, it is necessary to pull the pull rod 102a (when the pull rod 102a is taken off and pressed down, the telescopic rod 102h and the telescopic spring 102i will be compressed), which drives the frame 101a to move. The rear wheels and the front wheels 101b in the moving part 101 drive the purging assembly 200 on the frame 101a to move near the instrument pipeline. After the pull rod 102a is not used, the self-elastic force of the telescopic rod 102h and the telescopic spring 102i can push up the pull rod 102a to return to its original position, which can effectively reduce the risk of tripping caused by non-return during use and also reduce the placement area. After moving to the appropriate position, prepare for the instrument pipe pressure test.

[0068] Before performing the instrument pipe pressure test operation, it is necessary to first connect the quick external interface of the pressure test pipe (i.e., the plug interface 201b) to the instrument pipeline to be tested.

[0069] After setting the purging parameters through the integrated operation panel, start the pressure test switch button. At this time, the high-pressure air in the air storage tank 203b is released to the gas-liquid mixing area B through the branch pipe 203d controlled by the solenoid valve 203e. After the gas enters the gas-liquid mixing area B, the baffle 202b is used to block the impact force of the gas. Some of the bubbles generated by the gas impact will float up, and some will eliminate the water bubbles through the defoaming net 202a. Then the clear water that has eliminated the bubbles will enter the clear water area A, and the bubbles are not allowed to enter the clear water area A. Finally, the water in the clear water area A enters the instrument pipeline through the plug interface 201b. The high-speed flowing liquid can effectively remove the possible impurities, moisture or other pollutants inside the pipeline, achieve the cleaning purpose, and also be able to test whether the pressure bearing capacity of the instrument pipeline is within the quality range and the sealing condition. During the whole test process, the user can observe the internal situation of the water tank 201 through the visualization glass window 201a, and at the same time refer to the real-time data on the display screen to monitor the progress of the pressure test. When the gas in the air storage tank 203b is insufficient, start the small air pump 204 to inflate the air storage tank 203b.

[0070] Among them, a plurality of solenoid valves 203e are provided on the conveying pipe 203a and the branch pipe 203d. After the pressure test is completed, the inside of the instrument pipeline needs to be cleaned by purging. At this time, the insertion interface 201b needs to be replaced with the external interface 203c to the instrument pipeline to be purged. After setting the purging parameters through the integrated operation panel and starting the air purging switch button, the high-pressure air in the air storage tank 203b is controlled by the solenoid valve 203e and enters the instrument pipeline through the external interface 203c. It is also possible to directly start the small air pump 204, and discharge the gas directly into the instrument pipeline through the external interface 203c through the conveying pipe 203a (these two methods can be selected according to actual needs). The high-speed flowing air can effectively remove possible impurities, moisture or other pollutants inside the pipeline, achieving the purpose of cleaning. During the entire purging process, the user can refer to the real-time data on the display screen to monitor the purging progress.

[0071] After the purging is completed, close the corresponding valves and disconnect the quick connectors to separate the test trolley from the instrument pipeline. The system will automatically relieve pressure, and when necessary, the water tank 201 can be cleaned and refilled to prepare for the next use.

[0072] To ensure the safety of the operators and the long-term reliability of the equipment, all electrical components such as the small air pump 204 should have necessary protective measures, such as overload protection, short-circuit protection, etc.

[0073] In addition, the air pump chamber 203 adopts a louvered baffle design, which not only provides physical protection but also helps with heat dissipation, maintaining the internal temperature within a reasonable range.

[0074] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not restrictive. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A portable instrument pipe pressure purging test trolley, characterized in that: Including, A base assembly (100), including a moving member (101) and a driving member (102) disposed at an end of the moving member (101). The driving member (102) drives the moving member (101) to move. The rear wheels of the moving member (101) are independently inflatable wheels, connected by a transverse axis and adopting a spring shock absorption method. The pull rod in the driving member (102) adopts an automatic rebound method; A purging assembly (200), including a water tank (201) disposed at the top of the moving member (101). The interior of the water tank (201) is partitioned, and an anti-foaming member (202) is installed inside the water tank (201) to reduce the bubbles generated by pressurization from entering the instrument pipe. An air pump chamber (203) is installed on the side wall of the water tank (201), and a small air pump (204) is disposed inside the air pump chamber (203).

2. The portable instrument pipe pressure purging test trolley according to claim 1, wherein: The moving member (101) includes a frame (101a) disposed at the top of the rear wheels. A front wheel (101b) is installed at an end of the frame (101a). The front wheel (101b) is a steerable double-piece inflatable wheel.

3. The portable instrument pipe pressure purging test trolley according to claim 2, wherein: The driving member (102) includes a pull rod (102a) disposed at the top of the front wheel (101b). A pull ring (102b) is installed at the top of the pull rod (102a). The pull ring (102b) is arranged in a lying "8" shape. The angle between the pull rod (102a) and the pull ring (102b) is between 130 degrees and 145 degrees.

4. The portable instrument pipe pressure purging test trolley according to claim 3, wherein: The driving member (102) further includes a hydraulic cylinder (102c) disposed between the front wheels (101b). The output end of the hydraulic cylinder (102c) is connected to the transverse axis between the two wheels of the front wheel (101b).

5. The portable instrument pipe pressure purging test trolley according to claim 4, characterized in that: The driving member (102) further includes a fixing plate (102d) disposed on the side wall of the hydraulic cylinder (102c). The fixing plate (102d) is connected to a wedge block (102e) through a hinge shaft. The wedge block (102e) is connected to the pull rod (102a).

6. The portable instrument pipe pressure purging test trolley according to claim 5, characterized in that: The driving member (102) further includes a pressing block (102f) disposed inside the wedge block (102e). A top plate (102g) is installed at the bottom of the pressing block (102f). A telescopic rod (102h) is installed at the bottom of the top plate (102g). A telescopic spring (102i) is disposed between the telescopic rod (102h) and the top plate (102g). The telescopic spring (102i) and the telescopic rod (102h) are used to drive the top plate (102g) to lift the pull rod (102a) to a vertical state.

7. The portable instrument pipe pressure purging test trolley according to claim 6, characterized in that: The water tank (201) is divided into two areas: a clean water area (A) and a gas-liquid mixing area (B). A defoaming member (202) is used to separate the clean water area (A) from the gas-liquid mixing area (B). A visual glass window (201a) is installed on the side wall of the water tank (201), and an insertion port (201b) is installed on the side wall of the visual glass window (201a). The water tank (201) is installed at the top of the vehicle frame (101a) in a quick-release manner, and the water tank (201) is made of stainless steel, while the vehicle frame (101a) is a rigid plastic flat plate.

8. The portable instrument pipe pressure purging test trolley according to claim 7, characterized in that: The defoaming member (202) includes a defoaming net (202a) disposed between the clean water area (A) and the gas-liquid mixing area (B). A baffle (202b) is installed on the side of the defoaming net (202a) close to the gas-liquid mixing area (B). The baffle (202b) is inclined to reduce the direct impact of the airflow on the defoaming net (202a).

9. The portable instrument pipe pressure purging test trolley according to claim 8, wherein: The air pump chamber (203) includes a delivery pipe (203a) disposed at the air outlet of the small air pump (204). The delivery pipe (203a) is of a tee type. One of the branches of the delivery pipe (203a) is connected to a gas storage tank (203b). The air outlet of the gas storage tank (203b) is connected to an external interface (203c). The end of the external interface (203c) is also connected to the delivery pipe (203a). The external interface (203c) is provided with a branch pipe (203d) that extends into the gas-liquid mixing area (B) of the water tank (201). Solenoid valves (203e) are provided on the delivery pipe (203a), the gas storage tank (203b), and the branch pipe (203d).

10. A system of an instrument pipe pressure purging test trolley, characterized in that: Including the portable instrument pipe pressure purging test trolley according to any one of claims 1 to 9, further comprising A control component, including an integrated operation panel disposed on the outer wall of the air pump chamber (203). The integrated operation panel includes a display screen, a main power switch button, a pressure test switch button, an air purging switch button, and a pressure adjustment button. The information displayed on the display screen includes: status display, pressure value, test time, and pressure relief rate. On the side is a power cord outlet, which is stretchable and automatically rebounds. The integrated pressure detection and display device is designed to be detachable and is connected by a quick plug: Move the test trolley to the position of the instrument pipeline to be tested; Connect the quick external interface of the pressure test pipe and the insertion port of the water tank to the instrument pipeline to be tested, and perform water washing and purging through the insertion port and the external interface; Set the required pressure value and time through the integrated operation panel; Start the small air pump (204) for pressurization. When pressure testing of the instrument pipeline is required, the small air pump (204) starts to deliver gas through the branch pipe to the gas-liquid mixing area. The bubbles generated by the baffle (202b) and the defoaming net (202a) enter the clean water area (A), and then the water in the clean water area (A) is delivered to the instrument pipeline through the insertion port (201b) for pressure testing until the set pressure value is reached; Observe and record the status display, pressure value, test time, and pressure relief rate on the display screen; After the pressure test is completed, when purging is carried out, the small air pump (204) transports gas into the gas storage tank (203b), where the gas storage tank (203b) transports the gas into the external interface instrument pipeline for purging to clean the inside of the pipeline. When the air pressure in the gas storage tank (203b) reaches the set range, the small air pump (204) stops running. When it is less than the air pressure set range, the small air pump (204) starts to charge the gas storage tank (203b) until the set pressure value of the gas storage tank (203b) is reached; after the test is completed, disconnect the quick connector of the pressure test pipe and move the test trolley to the next working location.

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