Steel hot water pipe pressure testing equipment

Abstract

The utility model relates to steel heat pipeline test technical field, concretely is a kind of steel heat pipeline pressure test equipment. Including device base, the bottom of device base is provided with liquid storage bin, the inside installation of liquid storage bin has water pump one, water pipeline one and pressure gauge, the top of device base is installed with hydraulic cylinder, and the output end of hydraulic cylinder is connected with plug one, the bottom of plug one is installed with drain pipe, plug one is installed with steel pipe body, the one end of device base is fixedly installed with plug two near steel pipe body, the outside of device base is installed with liquid collection bin, and the bottom of liquid collection bin is installed with drain pipe, the outside of liquid collection bin is connected with filter device by pipeline. Hydraulic cylinder pushes plug one and blocks one end of steel pipe body, hydraulic cylinder continues to push steel pipe body and moves, the other end of steel pipe body is inserted by plug two, and the both ends of steel pipe body are blocked, this kind of blocking mode is convenient and fast, and can guarantee airtightness.

Description

Technical Field

[0001] This utility model relates to the field of testing technology for steel thermal pipelines, specifically to a pressure testing device for steel thermal pipelines. Background Technology

[0002] In urban centralized heating and industrial steam transmission, steel thermal pipelines serve as core pressure-bearing components. Their strength and tightness testing before leaving the factory and after installation is crucial, directly impacting the operational safety of the entire system. Hydrostatic testing is currently the most commonly used and safest inspection method. It involves injecting pressurized liquid into the pipeline and maintaining pressure for a period of time to check for leaks or permanent deformation in the pipeline body, welds, and connections.

[0003] For large-diameter steel pipelines, traditional sealing methods often employ flange blind flange connections, secured with numerous high-strength bolts. This method is not only cumbersome, labor-intensive, and time-consuming, but also difficult to align, and prone to gasket misalignment, leading to a high risk of leakage during testing and severely impacting testing efficiency. Furthermore, under extremely high test pressures, the bolts may break due to uneven preload, posing a safety hazard. Utility Model Content

[0004] To address the above problems, the purpose of this utility model is to provide a pressure testing device for steel thermal pipelines, which solves the problems of traditional sealing methods that mostly use flange blind plate connections and are fastened with a large number of high-strength bolts, resulting in cumbersome operation, high labor intensity, and long time consumption.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a pressure testing device for steel thermal pipelines, comprising a base, a liquid storage chamber at the bottom of the base, a heating plate installed inside the liquid storage chamber, a limit device installed on the upper part of the base, a water pump installed inside the liquid storage chamber, the output end of the water pump connected to a water supply pipe, a pressure gauge installed on the water supply pipe, a drive motor installed near the liquid storage chamber on the base, a stirring rod connected to the output end of the drive motor, a hydraulic cylinder installed on the top of the base, a plug connected to the output end of the hydraulic cylinder, a drain pipe installed at the bottom of the plug, a steel pipe body installed on the plug, a plug fixedly installed at the end of the base near the steel pipe body, a collection chamber installed on the outside of the base, a drain pipe installed at the bottom of the collection chamber, and a filter device connected to the outside of the collection chamber via a pipe.

[0006] To facilitate the limiting of the steel pipe body: As a further improvement to the above technical solution: the limiting device includes a drive motor, which is installed on the outside of the device base, and the output end of the drive motor is connected to a lead screw. A slider is installed on the lead screw, and a limiting roller is installed on the top of the slider.

[0007] The beneficial effects of this improvement are: the drive motor drives the slider to slide through the lead screw, which in turn drives the limit roller to limit the steel pipe body.

[0008] To facilitate water filtration: As a further improvement to the above technical solution: the filtration device includes a second water pump, which is installed on the outside of the liquid collection tank. A primary filter tank is connected to the top of the second water pump via a pipe. A secondary filter tank is connected to the outside of the primary filter tank via a pipe. A return water pipe is installed at the bottom of the secondary filter tank, and the end of the return water pipe away from the secondary filter tank is connected to the liquid storage tank.

[0009] The beneficial effects of this improvement are as follows: the water inside the steel pipe flows out slowly and collects in the liquid collection chamber. The second water pump transports the liquid through the liquid collection chamber to the primary filter tank, and after being filtered by the secondary filter tank, it flows back into the liquid storage chamber through the return water pipe.

[0010] To facilitate water mixing: As a further improvement to the above technical solution: the stirring rod and the device base are arranged in parallel to each other, and the stirring rod is symmetrical about the center line of the liquid storage tank.

[0011] The beneficial effects of this improvement are: by driving the stirring rod to rotate via the second drive motor, the water can be stirred, so that the water in the storage tank is heated evenly by the heating plate.

[0012] To ensure the sealing effect: As a further improvement to the above technical solution: the outer sides of the first and second plugs are fitted with rubber layers.

[0013] The beneficial effect of this improvement is that the use of a rubber layer can ensure the airtightness between plug one and plug two after they come into contact with the steel pipe body.

[0014] To facilitate the removal of the steel pipe body: As a further improvement to the above technical solution: a circular ring is installed on one end of the device base near the plug.

[0015] The beneficial effects of this improvement are as follows: the hydraulic cylinder is removed from the steel pipe body through plug one. Since the expansion property of rubber is generally difficult to detach, the steel pipe body moves with plug one and separates from plug two. When plug one and the steel pipe body move to the ring set on the device base, the steel pipe body is pushed out from plug one.

[0016] As a further improvement to the above technical solution: a temperature sensor is installed inside the liquid storage tank.

[0017] As a further improvement to the above technical solution: the top of the water pipeline is penetrated by the plug.

[0018] The beneficial effects of this utility model are as follows: First, the hydraulic cylinder pushes the plug one end of the steel pipe body to seal it. The hydraulic cylinder continues to push the steel pipe body to move, and the other end of the steel pipe body is inserted by the plug two, sealing both ends of the steel pipe body. This sealing method is convenient and fast, and can ensure airtightness.

[0019] 2. After the test, open the solenoid valve on the drain pipe. The water in the steel pipe body will slowly flow out and collect in the liquid collection tank. The second water pump will transport the liquid through the liquid collection tank to the primary filter tank, and after being filtered by the secondary filter tank, it will flow back into the liquid storage tank through the return water pipe. The filtered water can be used for subsequent tests, reducing the waste of water resources and avoiding the influence of impurities on the test. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the first isometric structure of the whole.

[0021] Figure 2 This is a schematic diagram of the overall second isometric structure.

[0022] Figure 3 This is a schematic diagram of the overall main view structure.

[0023] Figure 4 This is a schematic diagram of the overall side view structure.

[0024] Figure 5 This is a schematic diagram of the overall top-down structure.

[0025] In the diagram: 1. Device base; 11. Liquid storage tank; 12. Heating plate; 13. Drive motor one; 14. Lead screw; 15. Sliding block; 16. Limiting roller; 2. Water pump one; 21. Water supply pipe one; 22. Pressure gauge; 3. Drive motor two; 31. Stirring rod; 4. Hydraulic cylinder; 41. Plug one; 42. Drain pipe; 43. Plug two; 5. Steel pipe body; 6. Liquid collection tank; 61. Drain pipe; 62. Water pump two; 63. Primary filter tank; 64. Secondary filter tank; 65. Return water pipe. Detailed Implementation

[0026] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of this utility model in any way.

[0027] like Figure 1-5As shown, a pressure testing device for steel thermal pipelines includes a base 1, a liquid storage tank 11 at the bottom of the base 1, a heating plate 12 installed inside the liquid storage tank 11, a limit device installed on the upper part of the base 1, a water pump 2 installed inside the liquid storage tank 11, and a water supply pipe 21 connected to the output end of the water pump 2. A pressure gauge 22 is installed on the water supply pipe 21. A drive motor 3 is installed on the base 1 near the liquid storage tank 11, and a stirring rod 31 is connected to the output end of the drive motor 3. A hydraulic cylinder 4 is installed on the top of the base 1, and a plug 41 is connected to the output end of the hydraulic cylinder 4. A drain pipe 42 is installed at the bottom of the plug 41. The device includes a steel pipe body 5. A plug 43 is fixedly installed at one end of the device base 1 near the steel pipe body 5. A liquid collection chamber 6 is installed on the outside of the device base 1, and a drain pipe 61 is installed at the bottom of the liquid collection chamber 6. A filter device is connected to the outside of the liquid collection chamber 6 via a pipe. The limiting device includes a drive motor 13, which is installed on the outside of the device base 1. A lead screw 14 is connected to the output end of the drive motor 13. A slider 15 is installed on the lead screw 14, and a limiting roller 16 is installed on the top of the slider 15. The drive motor 13 drives the slider 15 to slide via the lead screw 14, thereby driving the limiting roller 16 to limit the steel pipe body 5. The filter device includes a water pump 62, which is installed in the liquid collection chamber. Outside of the 6, a primary filter tank 63 is connected to the top of the second water pump 62 via a pipe. A secondary filter tank 64 is connected to the outside of the primary filter tank 63 via a pipe. A return water pipe 65 is installed at the bottom of the secondary filter tank 64, and the end of the return water pipe 65 away from the secondary filter tank 64 is connected to the storage tank 11. Water in the steel pipe body 5 slowly flows out and collects inside the collection tank 6. The second water pump 62 transports the liquid to the primary filter tank 63 through the collection tank 6, and after filtration by the secondary filter tank 64, it flows back into the storage tank 11 through the return water pipe 65. The stirring rod 31 is arranged parallel to the device base 1, and symmetrically about the center line of the storage tank 11. The stirring rod 31 can be rotated by the second drive motor 3 to agitate the water. Stirring ensures that the water in the storage tank 11 is evenly heated by the heating plate 12. A rubber layer is fitted around the outer sides of plug 41 and plug 43 to ensure a tight seal between plug 41 and plug 43 and the steel pipe body 5. A ring is installed at one end of the device base 1 near plug 41. The hydraulic cylinder 4 is removed from the steel pipe body 5 through plug 41. Due to the expansion properties of rubber, it is generally difficult to detach. The steel pipe body 5 moves with plug 41 and separates from plug 43. When plug 41 and the steel pipe body 5 move to the ring on the device base 1, the steel pipe body 5 is pushed out of plug 41. A temperature sensor is installed inside the storage tank 11. The top of the water supply pipe 21 passes through plug 43.

[0028] The working principle of this utility model is as follows: When using this device, the steel pipe body 5 is placed above the device base 1. The drive motor 13 drives the slider 15 to slide through the lead screw 14, which in turn drives the limiting roller 16 to limit the steel pipe body 5. After the limiting is completed, the hydraulic cylinder 4 pushes the plug 41 to seal one end of the steel pipe body 5. The hydraulic cylinder 4 continues to push the steel pipe body 5 to move, and the other end of the steel pipe body 5 is inserted by the plug 43. The heating plate 12 heats the water in the storage tank 11. The drive motor 3 drives the stirring rod 31 to rotate and stir the water, so that the water is heated evenly. The temperature sensor and the control console control the switching of the heating plate 12 and the drive motor 3. The water pump 2 delivers constant temperature water to the inside of the steel pipe body 5 through the water pipeline 21. The pressure gauge 22 monitors the pressure and reaches the specified pressure. After pressure holding, the strength and tightness of the steel pipe are tested during the test. After the test, the solenoid valve on the drain pipe 42 is opened, and the water in the steel pipe body 5 flows out slowly and collects into the liquid collection tank 6. The second water pump 62 transports the liquid through the liquid collection tank 6 to the primary filter tank 63, and after filtration through the secondary filter tank 64, it flows back into the liquid storage tank 11 through the return water pipe 65. The filtered water can participate in subsequent tests. After a period of use, the drain pipe 61 is opened to discharge the impurities that have settled in the liquid collection tank 6. After the test is completed, the hydraulic cylinder 4 is taken out from the steel pipe body 5 through the plug 41. Since the expansion of rubber is generally difficult to detach, the steel pipe body 5 moves with the plug 41 and separates from the plug 43. When the plug 41 and the steel pipe body 5 move to the ring set on the device base 1, the steel pipe body 5 is pushed out from the plug 41.

[0029] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0030] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The above examples are only for the purpose of helping to understand the method and core ideas of this utility model. The above description is only a preferred embodiment of this utility model. It should be noted that due to the limitations of textual expression, there are objectively infinite specific structures. For those skilled in the art, several improvements, modifications, or changes can be made without departing from the principles of this utility model, and the above technical features can also be combined in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without modification, should all be considered within the protection scope of this utility model.

Claims

1. A steel hot water pipe pressure test apparatus, characterized by: The device includes a base (1), a liquid storage tank (11) at the bottom of the base (1), a heating plate (12) inside the liquid storage tank (11), a limit device on the upper part of the base (1), a water pump (2) inside the liquid storage tank (11), a water pipeline (21) connected to the output end of the water pump (2), a pressure gauge (22) on the water pipeline (21), a drive motor (3) near the liquid storage tank (11) on the base (1), and a stirrer connected to the output end of the drive motor (3). A stirring rod (31) is installed on the top of the device base (1), and a hydraulic cylinder (4) is installed on the top of the device base (1), and a plug (41) is connected to the output end of the hydraulic cylinder (4). A drain pipe (42) is installed at the bottom of the plug (41), and a steel pipe body (5) is installed on the plug (41). A plug (43) is fixedly installed at one end of the device base (1) near the steel pipe body (5). A liquid collection chamber (6) is installed on the outside of the device base (1), and a drain pipe (61) is installed at the bottom of the liquid collection chamber (6). A filter device is connected to the outside of the liquid collection chamber (6) through a pipe.

2. The pressure testing equipment for steel thermal pipelines according to claim 1, characterized in that: The limiting device includes a drive motor (13), which is installed on the outside of the device base (1). The output end of the drive motor (13) is connected to a lead screw (14). A slider (15) is installed on the lead screw (14), and a limiting roller (16) is installed on the top of the slider (15).

3. The steel hot water pipe pressure test apparatus according to claim 1, characterized by: The filtration device includes a second water pump (62), which is installed on the outside of the collection tank (6). A primary filter tank (63) is connected to the top of the second water pump (62) via a pipe. A secondary filter tank (64) is connected to the outside of the primary filter tank (63) via a pipe. A return water pipe (65) is installed at the bottom of the secondary filter tank (64), and the end of the return water pipe (65) away from the secondary filter tank (64) is connected to the storage tank (11).

4. The steel hot water pipe pressure test apparatus according to claim 1, characterized by: The stirring rod (31) and the device base (1) are arranged in parallel to each other, and the stirring rod (31) is symmetrical about the center line of the liquid storage tank (11).

5. The steel hot water pipe pressure test apparatus according to claim 1, characterized by: The outer sides of the first plug (41) and the second plug (43) are covered with rubber layers.

6. The steel hot water pipe pressure test apparatus according to claim 1, characterized by: A ring is installed on one end of the device base (1) near the plug (41).

7. The steel hot water pipe pressure test apparatus according to claim 1, characterized by: A temperature sensor is installed inside the liquid storage tank (11).

8. The pressure testing equipment for steel thermal pipelines according to claim 1, characterized in that: The top of the water supply pipeline (21) is penetrated by the plug (43).

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