A device for detecting the tightness of a water heating pipe

Abstract

The utility model relates to pipeline airtightness detection technical field, concretely to a kind of water heating pipeline airtightness detection device, including water tank, pump body, piston and fixedly arranged in the control assembly of the piston top, the top of the water tank is equipped with with the control assembly cooperation to drive the piston reciprocating motion in the pump body guiding component, the top of the guiding component is equipped with for the drive component of control piston and carry out quick operation and slow operation, by setting control assembly, guiding component and drive component, reached can ensure the effect that piston carries out straight up and down reciprocating motion, avoid the eccentric wear of plunger and pump body cylinder wall, simultaneously utilize ratchet pawl structure to realize piston and carry out high frequency reciprocating motion or low frequency reciprocating motion, to can substantially shorten pipeline and initial boost time of filling water, can also accurately control pressure increment, avoid overpressure risk, ensure that pressure is stable in test threshold, improve the accuracy of airtightness detection.

Description

Technical Field

[0001] This utility model relates to the field of pipeline airtightness testing technology, and in particular to a testing device for the airtightness of water heating pipelines. Background Technology

[0002] Water pipe tightness testing devices are mainly used to detect whether there is a leak in the pipes. The core is to judge the tightness by monitoring pressure changes or tracing the medium. The commonly used equipment is a manual pressure testing pump. The manual pressure testing pump can be manually operated to pressurize the medium such as water and inject it into the pipe system to make the pipe reach the specified test pressure. After the pipe system is pressurized to the test pressure and the valve between the pressure testing pump and the pipe is closed, the pipe is judged by observing the change of the pressure gauge reading connected to the pressure testing pump.

[0003] A pressure testing instrument for water supply branch pipes used in construction, disclosed in Chinese Patent Publication No. CN215812124U, uses a piston that reciprocates within a pump body by repeatedly lifting and pressing a handle. When the piston moves upward, the pump chamber volume increases, the pressure decreases, and liquid enters the pump chamber through the inlet check valve under atmospheric pressure. When the piston moves downward, the pump chamber volume decreases, the liquid is compressed, the pressure increases, the inlet check valve closes, and the outlet check valve opens, allowing the high-pressure liquid to be forced into the pipeline system to be tested. However, according to relevant information on plumbing pipes... In terms of closure testing devices and existing technologies, traditional manual pressure testing pumps mostly use direct-pressure handles or single reciprocating motion structures with fixed piston strokes. Each press outputs only a small amount of liquid. When filling pipelines or increasing pressure from low to high, the handle needs to be pressed frequently, resulting in numerous operations, long processing times, and high workload. At the same time, traditional direct-pressure handles transmit power through multiple pins and connecting rods. There are gaps at each hinge point and the force is concentrated. Frequent reciprocating motion leads to an increase in the clearance between the pins and shaft holes, causing handle wobbling, reduced transmission efficiency, and eccentric piston movement within the pump body. This results in wear of the sealing rings, uneven wear of the plunger, and pressure leakage. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art, solve the problems mentioned in the background art, and provide a device for detecting the airtightness of water heating pipes.

[0005] The purpose of this utility model is achieved through the following technical solution: a water pipe sealing detection device, comprising a water tank and a pump body fixedly installed on the top of the water tank, the outer side of the pump body is provided with a water outlet structure for detecting water pressure in the pipe, and the inside of the pump body is provided with a piston for pumping liquid inside the water tank to the water outlet structure, characterized in that: it further includes a control component fixedly installed on the top of the piston, the top of the water tank is provided with a guide component that cooperates with the control component to drive the piston to reciprocate within the pump body, and the top of the guide component is provided with a drive component for controlling the piston to operate quickly and slowly.

[0006] Preferably, the control assembly includes a fixed seat fixedly mounted on the top of the piston, a guide rod fixedly provided on the outer surface of the fixed seat, and a roller fitted on the end of the guide rod away from the fixed seat.

[0007] Preferably, the guide assembly includes a mounting bracket fixedly installed on the top of the water tank. The fixed base is rotatably provided with a spline shaft and a rotating shaft corresponding to the position of the guide rod. The rotating shaft is splinedly connected to the spline shaft. Two guide grooves are formed on the outer surface of the rotating shaft. The front view shape of the two guide grooves is V-shaped. The roller is rolled inside the guide groove.

[0008] Preferably, the drive assembly includes a ratchet rotatably disposed on the top of the mounting bracket, a collar rotatably disposed on the outer surface of the top of the ratchet, a plurality of pawls rotatably disposed inside the collar, the plurality of pawls being rotatably connected to the collar via an elastic element shaft, and the ratchet being splinedly connected to the spline shaft.

[0009] Preferably, a sleeve is fixedly provided on the side of the mounting bracket near the pump body, and an insert rod is fixedly provided on the outer surface of the guide rod, the insert rod being inserted into the sleeve.

[0010] Preferably, a threaded connector is fixedly provided on the outer surface of the collar, and a handle is threadedly connected to the threaded connector.

[0011] Preferably, the water outlet structure includes a water outlet pipe fixedly disposed on the outer surface of the pump body, and a pressure gauge for reading water pressure and a drain bolt for relieving pressure are fixedly installed on the water outlet pipe.

[0012] The beneficial effects of this water pipe tightness testing device are as follows: by setting up control components, guide components, and drive components, it can ensure that the piston performs a straight up-and-down reciprocating motion, avoiding uneven wear between the plunger and the pump cylinder wall. At the same time, the ratchet and pawl structure enables the piston to perform high-frequency or low-frequency reciprocating motion, which can significantly shorten the time for the pipe to be filled with water and initially pressurized, and can accurately control the pressure increment, avoid the risk of overpressure, ensure that the pressure is stable at the test threshold, and improve the accuracy of tightness testing. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram showing the state of the guide assembly when the piston moves upward according to this utility model; Figure 3 This is a schematic diagram showing the state of the guide assembly when the piston moves downwards according to this utility model; Figure 4 This is a schematic diagram of the first working state of the rotating shaft of this utility model; Figure 5 This is a schematic diagram of the second working state of the rotating shaft of this utility model; Figure 6 This is a schematic diagram of the structure of the grip after installation. Figure 7 This is a schematic diagram showing the state of the pawl when the collar of this utility model rotates in the forward direction; Figure 8 This is a schematic diagram showing the state of the pawl when the collar of this utility model rotates in the opposite direction.

[0015] In the diagram: 1. Water tank; 2. Pump body; 3. Water outlet structure; 301. Water outlet pipe; 302. Pressure gauge; 303. Drain bolt; 4. Piston; 5. Control assembly; 501. Fixing base; 502. Guide rod; 5021. Insert rod; 503. Roller; 6. Guide assembly; 601. Mounting bracket; 6011. Sleeve; 602. Splined shaft; 603. Rotary shaft; 604. Guide groove; 7. Drive assembly; 701. Ratchet; 702. Collar; 7021. Threaded connector; 7022. Handle; 703. Pawl; 704. Elastic element rotating shaft. Detailed Implementation

[0016] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0017] Additional aspects and advantages of this invention will be further set forth in the description which follows in conjunction with the accompanying drawings, in part of which will be obvious from the description or may be learned by practice of the invention.

[0018] like Figures 1 to 8 As shown, a water pipe sealing test device includes a water tank 1 and a pump body 2 fixedly installed on the top of the water tank 1. The outer side of the pump body 2 is provided with a water outlet structure 3 for detecting water pressure in the pipe. The water outlet structure 3 includes a water outlet pipe 301 fixedly installed on the outer surface of the pump body 2. A pressure gauge 302 for reading water pressure and a drain bolt 303 for relieving pressure are fixedly installed on the water outlet pipe 301. The pump body 2 is provided with a piston 4 for pumping liquid inside the water tank 1 to the water outlet structure 3. A control component 5 is fixedly installed on the top of the piston 4. The top of the water tank 1 is provided with a guide component 6 that cooperates with the control component 5 to drive the piston 4 to reciprocate within the pump body 2. The top of the guide component 6 is provided with a drive component 7 for controlling the piston 4 to operate at high speed and slow speed.

[0019] The control assembly 5 includes a fixed seat 501 fixedly mounted on the top of the piston 4. A guide rod 502 is fixedly provided on the outer surface of the fixed seat 501. A roller 503 is fitted on the end of the guide rod 502 away from the fixed seat 501.

[0020] The guide assembly 6 includes a mounting bracket 601 fixedly installed on the top of the water tank 1. The fixed base 501 is rotatably provided with a splined shaft 602 and a rotating shaft 603 corresponding to the position of the guide rod 502. The rotating shaft 603 is splinedly connected to the splined shaft 602. Two guide grooves 604 are opened on the outer surface of the rotating shaft 603. The front view shape of the two guide grooves 604 is V-shaped. The roller 503 is rolled inside the guide groove 604. A sleeve 6011 is fixedly provided on the side of the mounting bracket 601 near the pump body 2. An insert rod 5021 is fixedly provided on the outer surface of the guide rod 502. The insert rod 5021 is inserted into the sleeve 6011. The cooperation between the insert rod 5021 and the sleeve 6011 can ensure that the piston 4 can perform a straight up and down reciprocating motion, ensuring accurate motion trajectory, avoiding uneven wear between the plunger and the pump body cylinder wall, and reducing seal wear.

[0021] The drive assembly 7 includes a ratchet 701 rotatably mounted on top of the mounting bracket 601. A collar 702 is rotatably mounted on the outer surface of the ratchet 701's top end. Multiple pawls 703 are rotatably mounted inside the collar 702. All pawls 703 are rotatably connected to the collar 702 via an elastic shaft 704. A bearing is embedded in the top of the collar 702, and the top end of the ratchet 701 is inserted into the inner ring of the bearing. The ratchet 701 is splinedly connected to the splined shaft 602. The bearing prevents direct friction between the collar 702 and the pawls 703, while also facilitating the assembly of the drive assembly 7. A threaded connector 7021 is fixedly mounted on the outer surface of the collar 702, and a handle 7022 is threaded onto the threaded connector 7021. The ratchet 701 and pawl 703 structure enables single rotation of the shaft 603. The rapid rotation drives the piston 4 to reciprocate at high frequency, quickly filling the pipe with liquid and increasing the pressure, significantly shortening the time for the pipe to be filled with water and initially pressurized. When the pressure increases, it switches to the reciprocating rocking mode of the handle 7022. The lever principle reduces the force applied, while the slow movement of the piston 4 can precisely control the pressure increment, avoid the risk of overpressure, and ensure that the pressure is stable at the test threshold, improving the accuracy of the airtightness test. (The drive component 7 achieves unidirectional drive through ratchet 701 and pawl 703. When the handle 7022 is rocked in the opposite direction, it will not drive the rotating shaft 603 to reverse. It only transmits power when applying force in the forward direction, reducing ineffective force. The lever design of the reciprocating rocking handle 7022 can use the lever arm principle to disperse the force, which is more labor-saving than the traditional direct pressure operation, especially suitable for long-term work or operators with weak physical strength.)

[0022] The work process is as follows: S1: When it is necessary to test the airtightness of the water pipes, first connect one end of the connecting hose to the outlet pipe 301, then connect the other end of the connecting hose to the water pipe, then connect the handle 7022 and the threaded connector 7021 together, then open the drain bolt 303 to put the water inside the water pipe into the water tank 1 or add clean water to the water tank 1 in advance. S2: After the preparation is completed, the pressure test can be carried out. During the pressure test, the collar 702 is rotated by the handle 7022. At this time, multiple pawls 703 will push the ratchet 701 to rotate. Then the ratchet 701 drives the rotating shaft 603 to rotate through the spline shaft 602. S3: When the rotating shaft 603 rotates, the guide groove 604 and the roller 503 cooperate to allow the guide rod 502 to drive the fixed seat 501 to perform longitudinal reciprocating motion, thereby causing the piston 4 to perform rapid reciprocating motion in the pump body 2. At this time, the pump body 2 will inject the water inside the water tank 1 into the water heating pipe through the water outlet pipe 301 and the connecting hose. S4: During pressurization, the water pressure can be observed in real time through the pressure gauge 302. When the water pressure is about to reach the threshold, the piston 4 can be slowly reciprocated in the pump body 2 by reciprocating the handle 7022 (when the handle 7022 controls the collar 702 to rotate in the opposite direction, multiple pawls 703 will simultaneously disengage from the ratchet 701, thus making it impossible to control the ratchet 701 to rotate). After reaching the threshold, stop reciprocating the handle 7022, and then observe the change in the pressure gauge 302 to directly see the airtightness of the water heating pipe. S5: In summary, when the initial pressure in the pipeline is low, the drive component 7 can quickly control the unidirectional rotation mode of the rotating shaft 603 to drive the piston 4 to reciprocate rapidly. At this time, there is no need to frequently reverse the operation of the handle 7022, reducing ineffective actions and enabling the pipeline pressure to be increased to close to the test value in a short time. This is especially suitable for the initial pressurization stage of large-volume pipelines, significantly improving the preparation efficiency before testing. When the pipeline pressure is close to the test threshold, it is necessary to switch to the reciprocating rocking mode of the handle 7022. The rotation of the rotating shaft 603 is controlled by the intermittent transmission of the ratchet 701 and pawl 703, so that the piston 4 moves slowly, ensuring that the pressure rises steadily to the target value, reducing repeated pressure release and pressure replenishment operations, and improving the smoothness of the overall testing process.

[0023] The water tank 1, pump body 2, water outlet structure 3, piston 4, and elastic element shaft 704 described in this application are all known technologies, therefore their specific structures and working principles are not described in detail.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A device for detecting the airtightness of a water heating pipe, comprising a water tank (1) and a pump body (2) fixedly installed on the top of the water tank (1), wherein the pump body (2) is provided with a water outlet structure (3) for detecting water pressure in the pipe on its outer side, and a piston (4) is provided inside the pump body (2) for pumping liquid inside the water tank (1) to the water outlet structure (3), characterized in that: It also includes a control assembly (5) fixedly installed on the top of the piston (4), and a guide assembly (6) is provided on the top of the water tank (1) to cooperate with the control assembly (5) to drive the piston (4) to reciprocate in the pump body (2). The top of the guide assembly (6) is provided with a drive assembly (7) for controlling the piston (4) to run fast and slow.

2. The device for detecting the airtightness of water heating pipes according to claim 1, characterized in that: The control assembly (5) includes a fixed seat (501) fixedly mounted on the top of the piston (4), a guide rod (502) fixedly provided on the outer surface of the fixed seat (501), and a roller (503) fitted on one end of the guide rod (502) away from the fixed seat (501).

3. The device for detecting the airtightness of water heating pipes according to claim 2, characterized in that: The guide assembly (6) includes a mounting bracket (601) fixedly installed on the top of the water tank (1). The fixed base (501) is rotatably provided with a spline shaft (602) and a rotating shaft (603) corresponding to the position of the guide rod (502). The rotating shaft (603) is splinedly connected to the spline shaft (602). Two guide grooves (604) are opened on the outer surface of the rotating shaft (603). The front view shape of the two guide grooves (604) is V-shaped. The roller (503) is rolled inside the guide groove (604).

4. The device for detecting the airtightness of water heating pipes according to claim 3, characterized in that: The drive assembly (7) includes a ratchet (701) rotatably disposed on the top of the mounting bracket (601). A collar (702) is rotatably disposed on the outer surface of the top of the ratchet (701). Multiple pawls (703) are rotatably disposed inside the collar (702). The multiple pawls (703) are rotatably connected to the collar (702) through an elastic element shaft (704). The ratchet (701) is splinedly connected to the spline shaft (602).

5. The device for detecting the airtightness of water heating pipes according to claim 3, characterized in that: The mounting bracket (601) is fixedly provided with a sleeve (6011) on the side near the pump body (2), and the guide rod (5022) is fixedly provided with a plug rod (5021) on the outer surface of the guide rod (502), and the plug rod (5021) is inserted into the sleeve (6011).

6. The device for detecting the airtightness of water heating pipes according to claim 4, characterized in that: The outer surface of the collar (702) is fixedly provided with a threaded connector (7021), and a handle (7022) is threadedly connected to the threaded connector (7021).

7. The device for detecting the airtightness of water heating pipes according to claim 1, characterized in that: The water outlet structure (3) includes a water outlet pipe (301) fixedly installed on the outer surface of the pump body (2). A pressure gauge (302) for reading water pressure and a drain bolt (303) for relieving pressure are fixedly installed on the water outlet pipe (301).

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