New and old water supply pipe network non-stop rapid connection construction structure and method

Abstract

The invention discloses a new and old water supply network non-stop rapid connection construction structure which comprises a current water supply pipe, the outer wall of a current water supply pipe body is provided with a first channel and a second channel which are coaxially and tightly matched with a Haff joint tee joint respectively, and a third channel of the Haff joint tee joint is connected with the inlet end of a valve. And a pressure tapper is arranged at the outlet end of the valve. The invention further discloses a construction method for rapid connection of the new water supply pipe network and the old water supply pipe network without cutting off water. The connection construction speed and the safety operability can be improved, the influence of water cut-off construction on the life of urban residents is avoided, and the method can be widely applied to the field of municipal engineering construction.

Description

Technical Field

[0001] The present invention relates to municipal engineering construction, in particular to a construction structure and method for rapidly connecting a new and an old water supply network without water interruption. Background Art

[0002] With the development of urbanization in my country, the length of urban water supply pipelines has continued to increase, and the penetration rate of public water supply has continued to improve. As the urban population increases, the water supply pipeline network is affected by factors such as construction funds and market. The current water supply pipes are made of various materials such as concrete pipes, PE pipes, spiral steel pipes, and ductile iron pipes. With the operation in recent decades, they have become aging and damaged, and the renewal of underground water supply pipelines is imminent.

[0003] Conventional water supply network connections require partial water outages and drainage at the waterworks before construction. This interruption creates inconvenience for urban residents, and after the outage, accumulated water within the existing network must be pumped out, wasting water resources and impacting the safety of the foundation pit for the connection. Furthermore, due to the complex and diverse materials and severe aging of the existing network, the connection pipes must be made of the same material as the existing pipes, making connection difficult. This interruption not only wastes water resources and delays construction, but also makes flooding the foundation pit highly susceptible to safety accidents, resulting in casualties and property damage. Therefore, research is necessary to develop methods for non-stop water supply network connection. Summary of the Invention

[0004] The purpose of the present invention is to overcome the shortcomings of the above-mentioned background technology and provide a construction structure and method for rapid connection of new and old water supply networks without water outage, so as to improve the operational impact brought by traditional water outage connection, increase the speed and safe operation of connection construction, and avoid the impact of water outage construction on the lives of urban residents.

[0005] The present invention provides a construction structure for rapid connection of new and old water supply networks without water interruption, including an existing water supply pipe, wherein the outer wall of the existing water supply pipe body is provided with a half joint tee with a first passage and a second passage coaxially and tightly fitted therewith, the third passage of the half joint tee is connected to the inlet end of the valve, and the outlet end of the valve is provided with a pressure opener.

[0006] In the above technical solution, the valve is a gate valve.

[0007] In the above technical solution, the valve plate of the gate valve is wedge-shaped with a larger upper portion and a smaller lower portion.

[0008] In the above technical solution, the gate valve is a non-rising stem gate valve.

[0009] In the above technical solution, the axis of the third passage of the half joint tee is connected to the axis of the existing water supply pipe at an acute angle or vertically.

[0010] In the above technical solution, the pressure hole opener has a cylinder wall and a hole opener handwheel, a transmission rod and a drill bit arranged coaxially with the cylinder wall. The drill bit is located on one end of the transmission rod facing the half joint tee, and the hole opener handwheel is located at the other end of the transmission rod.

[0011] In the above technical solution, the first passage and the second passage of the half joint tee are respectively composed of a plurality of circular arc plates, and the circular arc plates are connected by high-strength bolts.

[0012] The present invention also provides a construction method for rapid connection of new and old water supply networks without water outages, which has the following steps: S1. Determine the connection point on the existing water supply pipe, and mark out the installation position of the half joint tee, first tighten it preliminarily with high-strength bolts, adjust the elevation of the third passage of the half joint tee and then fix it again, and connect the gate valve to one end of the half joint tee with high-strength bolts; S2. Install the pressure hole opener to the other end of the half joint tee with high-strength bolts; S3. First rotate the gate valve handwheel to raise the valve plate of the gate valve to the top to a fully open state; S4. Rotate the hole opener handwheel, and after the drill bit contacts the existing water supply pipe, slowly rotate the hole opener handwheel to perform step-by-step hole opening operations; S5. After the drilling is completed, rotate the hole opener handwheel in the opposite direction to return the drill bit to the initial state, and then drop the valve plate of the gate valve to a closed state, remove the pressure hole opener, and complete the hole opening operation.

[0013] The above technical solution further includes step S6, continuing the construction work of the downstream pipeline network at the flange of the gate valve away from the half joint tee.

[0014] The above technical solution also includes step S0, which determines the specifications and models of the half-joint tee and gate valve based on the current water supply pipe network conditions, the specifications of the new pipe network, the surrounding conditions of the connection or leakage point, and the construction specifications, and excavates the foundation pit at the connection point. If the slope conditions are not met, support measures are set up, and a collection well for emergency drainage is set at the bottom of the foundation pit.

[0015] The construction structure and method for rapidly connecting new and old water supply pipe networks without water interruption of the present invention have the following beneficial effects: 1. This invention is not only suitable for switching between old and new water supply networks or connecting branch water supply systems, but is also suitable for the rapid connection of new drainage networks made of metal or plastic. The multi-angle half-joint tee can solve the problems of pipe diameter, material, and construction angle between old and new pipe networks, and has a wide range of applications.

[0016] 2. By using the valve plate of the gate valve to control the water flow, a dry working environment is provided for the construction after the valve, and rapid connection construction without water outage is achieved. It is especially suitable for sensitive areas such as hospitals, schools, residential areas and comprehensive commercial buildings. The water quality of the water supply is not polluted, ensuring drinking safety.

[0017] 3. When the present invention is applied to the repair of leakage in old pipe networks, it is not restricted by the existing water supply pipe diameter, material, terrain and other conditions, and can achieve emergency repairs.

[0018] 4. By using a fully sealed cutting device, a smooth incision can be achieved, ensuring the sealing and pressure resistance of the interface; there is no leakage and no sewage discharge during the cutting operation, avoiding the risk of collapse and settlement of the foundation pit caused by water during local water outages and drainage connection operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural diagram of the construction structure for the non-stop rapid connection of new and old water supply pipe networks according to the present invention; Figure 2 This is an overall flow chart of the construction method for quickly connecting new and old water supply pipe networks without water interruption of the present invention; Figure 3 This is a schematic diagram of the structure corresponding to step S2 in the construction method for rapid connection of new and old water supply pipe networks without water interruption of the present invention; Figure 4 This is a schematic diagram of the structure corresponding to step S3 in the construction method for rapid connection of new and old water supply pipe networks without water interruption of the present invention; Figure 5 This is a schematic diagram of the structure corresponding to step S4 in the construction method for rapid connection of new and old water supply pipe networks without water interruption of the present invention; Figure 6 This is a schematic diagram of the structure corresponding to step S5 in the construction method for rapid connection of new and old water supply pipe networks without water interruption of the present invention; Figure 7 This is a schematic diagram of the structure corresponding to step S6 in the construction method for rapid connection of new and old water supply pipe networks without water outages of the present invention. DETAILED DESCRIPTION

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and examples, but the examples should not be construed as limiting the present invention.

[0021] Example 1 See also Figure 1 The present invention provides a rapid, non-stop connection structure for connecting old and new water supply networks. The structure comprises an existing water supply pipe 1, with a half-joint tee 2 having a first passageway and a second passageway coaxially and tightly fitted therewith. The third passageway of the half-joint tee 2 is connected to the inlet of a valve. In this embodiment, the first and second passageways of the half-joint tee 2 are each composed of a plurality of circular plates, connected by high-strength bolts 3. A pressurized hole tap 7 is provided at the outlet of the valve.

[0022] The valve is a gate valve 4. The valve plate 6 of the gate valve 4 is in a wedge shape with a larger upper portion and a smaller lower portion. The gate valve 4 is a concealed stem gate valve.

[0023] The pressure hole opener 7 has a cylinder wall and a hole opener handwheel 8, a transmission rod and a drill bit 9 arranged coaxially with the cylinder wall. The drill bit 9 is located on one end of the transmission rod facing the half joint tee 2, and the hole opener handwheel 8 is located at the other end of the transmission rod.

[0024] Example 2 This embodiment is basically the same as the first embodiment, except that: The axis of the third passage of the half joint tee 2 is connected to the axis of the existing water supply pipe 1 at an acute angle or perpendicularly. In this embodiment, the acute angle is 30° or 45°.

[0025] Example 3 See also Figure 2 The method for quickly connecting the new and old water supply pipe networks without water interruption of the present invention comprises the following steps: S1. Determine the specifications and models of half-joint tees (2) and gate valves (4) at different angles based on the existing water supply network (1), the specifications of the new network, the conditions surrounding the connection or leak point, and construction specifications. Based on the determined equipment models, excavate the foundation pit at the connection point. If slope requirements are not met, necessary support measures must be implemented. A water collection well should be installed at the bottom of the foundation pit to facilitate rapid drainage in emergencies.

[0026] S2, see Figure 3 Determine the appropriate connection point on the existing water supply pipe network and stake out the installation positions of the half joint tee 2 at various angles. Initially tighten the half joint tee 2 with high-strength bolts 3. Adjust the elevation of the third passage of the half joint tee 2 and secure it again. Then, connect the gate valve 4 to one end of the half joint tee 2 at various angles with high-strength bolts 3. Tighten the high-strength bolts 3 diagonally, tightening them in stages.

[0027] S3, see Figure 4 , install the pressure hole opener 7 to the other end of each half joint tee 2 through the high-strength bolt 3, tighten the high-strength bolt 3 diagonally, and tighten it into place in stages.

[0028] S4, see Figure 5 First, rotate the gate valve handwheel 5 to raise the valve plate 6 of the gate valve 4 to the top to the fully open state.

[0029] S5, see Figure 6 , rotate the hole opener hand wheel 8, wait until the drill bit 9 contacts the existing water supply pipe 1, and then slowly rotate the hole opener hand wheel 8 to perform step-by-step hole opening operations. The hole opening operation should control the speed to avoid damage to the drill bit 9 caused by excessive water pressure.

[0030] S6, see Figure 7After the drilling is completed, rotate the hole opener handwheel 8 in the opposite direction to return the drill bit 9 to its initial position, then lower the valve plate 6 of the gate valve 4 to the fully closed position, and finally remove the pressurized hole opener 7 to complete the drilling operation. The removal of the high-strength bolts 3 should be carried out in stages and diagonally.

[0031] S7. At the gate valve 4 flange, the construction work of the downstream pipeline network can continue.

[0032] The present invention provides a construction structure for rapid connection of old and new water supply networks without water outages, comprising an existing water supply pipe 1, a half-joint tee 2 at multiple angles, a gate valve 4, a pressure hole opener 7, and a newly constructed water supply network. A working pit is excavated at the connection point, the connection point is precisely determined along the existing water supply pipe 1, and the half-joint tee 2 at various angles is installed to ensure that the high-strength bolts 3 are tightened; a gate valve 4 of appropriate specifications is selected to connect it to the half-joint tee 2, and then the valve plate 6 of the gate valve 4 is fully opened; a suitable drill bit 9 is selected based on the material of the existing water supply pipe 1 and the diameter of the half-joint tee 2, and the pressure hole opener 7 is installed at the other end of the gate valve 4; the pressure hole opener 7 is used to drill holes step by step on the existing water supply pipe 1, and the valve plate 6 of the gate valve 4 is closed after the drilling is completed; the pressure hole opener 7 is removed and the new pipe network is connected.

[0033] This invention effectively addresses the impact of water outages on livelihoods, construction progress, and safety during repair and connection work on leaks in new or old water supply networks made of different materials, or in older urban areas. The use of a gate valve 4, a half-joint tee 2, and a pressurized hole opener 7 ensures continuous water supply, reducing the number of traditional connection steps. This invention significantly improves connection efficiency and safety, reduces indirect economic losses caused by water outages, and ensures water quality.

[0034] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

[0035] The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

Claims

1. A construction structure for rapidly connecting a new and old water supply network without water interruption, comprising an existing water supply pipe (1), characterized in that: The outer wall of the existing water supply pipe (1) is provided with a first passage and a second passage, respectively coaxially and tightly fitted with a half joint tee (2), the third passage of the half joint tee (2) is connected to the inlet end of the valve, and the outlet end of the valve is provided with a pressure opener (7).

2. The construction structure for rapid connection of new and old water supply pipe networks without water interruption according to claim 1 is characterized in that: The valve is a gate valve (4).

3. The construction structure for rapid connection of new and old water supply pipe networks without water interruption according to claim 2 is characterized in that: The valve plate (6) of the gate valve (4) is in a wedge shape that is larger at the top and smaller at the bottom.

4. The construction structure for rapid connection of new and old water supply pipe networks without water interruption according to claim 3 is characterized by: The gate valve (4) is a non-rising stem gate valve.

5. The construction structure for rapid connection of new and old water supply networks without water interruption according to claim 4 is characterized in that: The axis of the third passage of the half joint tee (2) is connected to the axis of the existing water supply pipe (1) at an acute angle or vertically.

6. The construction structure for rapid connection of new and old water supply networks without water interruption according to claim 5 is characterized in that: The pressure hole opener (7) comprises a cylinder wall, a hole opener handwheel (8), a transmission rod and a drill bit (9) arranged coaxially with the cylinder wall, wherein the drill bit (9) is located on one end of the transmission rod facing the half joint tee (2), and the hole opener handwheel (8) is located on the other end of the transmission rod.

7. The construction structure for rapid connection of new and old water supply networks without water interruption according to claim 6 is characterized in that: The first passage and the second passage of the half joint tee (2) are respectively composed of a plurality of circular arc plates, and the circular arc plates are connected by high-strength bolts (3).

8. A method for rapidly connecting a new and old water supply network without water interruption, characterized in that: The steps are as follows: S1. Determine the connection point on the existing water supply pipe (1) and lay out the installation position of the half joint tee (2). First, preliminarily tighten it with high-strength bolts (3). Adjust the elevation of the third passage of the half joint tee (2) and then fix it again. Connect the gate valve (4) to one end of the half joint tee (2) with the high-strength bolts (3); S2. Install the pressure hole opener (7) to the other end of the half joint tee (2) through the high-strength bolt (3); S3. First, rotate the gate valve hand wheel (5) to raise the valve plate (6) of the gate valve (4) to the top to a fully open state; S4, rotating the hole opener hand wheel (8), after the drill bit (9) contacts the existing water supply pipe (1), slowly rotating the hole opener hand wheel (8) to perform step-by-step hole opening operations; S5. After the drilling is completed, the hand wheel (8) of the hole opener is rotated in the opposite direction to return the drill bit (9) to the initial state, and then the valve plate (6) of the gate valve (4) is lowered to the closed state, and the pressure hole opener (7) is removed to complete the hole opening operation.

9. The method for rapidly connecting the old and new water supply networks without water interruption according to claim 8, characterized in that: The method further includes step S6, where the gate valve (4) is away from the flange of the half joint tee (2), continuing the construction work of the downstream pipe network.

10. The method for rapidly connecting the old and new water supply networks without water interruption according to claim 9, characterized in that: The method further includes step S0, determining the specifications and models of the half joint tee (2) and the gate valve (4) according to the existing water supply pipe (1) network conditions, the specifications of the newly built pipe network, the connection or the surrounding conditions of the leaking point and the requirements of the construction specifications, and excavating the foundation pit at the connection point based on the specifications. If the slope conditions are not met, support measures are set up, and a water collection well for emergency drainage is set up at the bottom of the foundation pit.

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