Steel seamless tee joint capable of assembling pressure detection device
By designing a structure such as an installation ring, a sealing ring tube, and an unlocking rotary cylinder on a seamless steel tee, the pressure detection device is easily installed and sealed, solving the problems of complex installation and leakage risk in the existing technology, and improving the accuracy of detection and the stability of the system.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YANCHENG HAOHUI PIPE FITTINGS CO LTD
- Filing Date
- 2025-07-15
- Publication Date
- 2026-05-19
AI Technical Summary
Existing seamless steel tees cannot be easily fitted with pressure testing devices, resulting in high construction costs, complex installation, complex structure, and leakage risks in pipeline systems.
A seamless steel tee for assembling pressure testing devices was designed. By setting an installation ring, a sealing ring pipe, a flow block, and an unlocking cylinder on the tee body, the pressure testing device can be easily installed and sealed.
It simplifies the installation process of pressure detection devices, improves sealing and detection accuracy, reduces system complexity and leakage risk, and ensures the stable operation of pipeline systems.
Smart Images

Figure CN224261222U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of steel tee testing technology, specifically a seamless steel tee that can be assembled with a pressure testing device. Background Technology
[0002] In various industrial pipeline systems, such as petrochemicals, natural gas transmission, and water supply and drainage, tees are commonly used pipe fittings, playing a crucial role in connecting pipelines with different directions and realizing fluid diversion, merging, or reversal. Seamless steel tees are widely used in applications requiring high safety and reliability due to their high strength, good sealing, and strong corrosion resistance. However, existing conventional seamless steel tees typically only provide simple pipe connection functions and cannot directly meet the need for convenient installation of pressure detection devices during pipeline operation for real-time fluid pressure monitoring. To achieve pressure detection, complex bypass pipelines and connecting components are often required, significantly increasing construction costs and installation difficulty. This not only makes the entire pipeline system more complex and occupies more space but also increases the risk of leaks and other malfunctions, hindering long-term stable operation and subsequent maintenance. Utility Model Content
[0003] The purpose of this invention is to provide a seamless steel tee that can be fitted with a pressure testing device, so as to solve the problems mentioned in the background art.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a seamless steel tee for assembling a pressure detection device, comprising a tee body, an installation ring fixedly fitted at the pipe opening of the tee body, an insertion hole at the top of the installation ring, a sealing ring tube fixedly installed at the bottom of the insertion hole, and the sealing ring tube fixedly installed on the inner side of the installation ring, a protruding inclined block at the bottom of the sealing ring tube, a flow-through block slidably arranged on the side of the protruding inclined block, a first threaded groove at the side of the flow-through block, an unlocking rotary cylinder installed on the inner side of the flow-through block, an assembly groove at the top of the unlocking rotary cylinder, a pressure device installed in the assembly groove, and a second threaded ring at the bottom side of the pressure device.
[0005] Preferably, a hexagonal bolt head is fixedly installed on the top of the unlocking rotary cylinder, and a sealing slider is fixedly installed on the side of the unlocking rotary cylinder, and two sets of sealing sliders are provided.
[0006] Preferably, the inner ring pipe side of the sealing ring pipe is provided with a sealing groove, the sealing groove is slidably connected to the sealing slider, and the bottom of the protruding inclined block is provided with a concave groove.
[0007] Preferably, a connecting block is fixedly installed at the bottom of the flow block, the connecting block is inserted into the concave groove, and a sealing ring is installed at the top of the connecting block.
[0008] Preferably, the side of the unlocking rotary drum is provided with a first threaded ring, and the first threaded ring is engaged with a first threaded groove. The bottom of the unlocking rotary drum is provided with a pressure measuring port, and the bottom of the pressure measuring port is connected to the inner side of the flow block.
[0009] Preferably, the flow block has a flow port on its side, and the unlocking rotary cylinder has a second threaded groove on its inner side, which engages with the second threaded ring.
[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: by setting an installation ring structure for installing pressure devices, there is no need to add complex bypass pipes and connecting components, which greatly simplifies the installation process of pressure detection devices in pipeline systems. When the pressure detection device is installed in the assembly slot, by tightening the unlocking cylinder, the unlocking cylinder is threadedly connected to the flow block, which drives the flow block to slide in the sealing ring pipe. The flow port connects the pressure sensor and the inside of the tee through the pressure test port. The structure is simple, achieves a good sealing effect, and the installation and disassembly of the pressure sensor are convenient. It can quickly and accurately obtain the fluid pressure changes in the pipeline. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0012] Figure 2 This is a schematic diagram of the cross-section of the structure of this utility model;
[0013] Figure 3 for Figure 2 Enlarged schematic diagram of the structure at point A in the middle;
[0014] Figure 4 This is a schematic diagram of the sealing ring tube structure of this utility model.
[0015] In the diagram: 1. Tee body; 2. Mounting ring; 3. Insertion hole; 4. Sealing ring tube; 5. Raised inclined block; 6. Flow block; 7. First threaded groove; 8. Unlocking rotary drum; 9. Assembly groove; 10. Pressure device; 11. Second threaded ring; 12. Hex bolt head; 13. Sealing slider; 14. Sealing groove; 15. Concave groove; 16. Connecting block; 17. Sealing ring; 18. First threaded ring; 19. Pressure test port; 20. Flow port; 21. Second threaded groove. Detailed Implementation
[0016] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0017] Example 1: Please refer to Figures 1-4 This utility model provides a technical solution: a seamless steel tee for assembling a pressure detection device, comprising a tee body 1, an installation ring 2 fixedly fitted at the pipe opening of the tee body 1, an insertion hole 3 on the top of the installation ring 2, a sealing ring tube 4 fixedly installed at the bottom of the insertion hole 3, and the sealing ring tube 4 fixedly installed on the inner side of the installation ring 2, a protruding inclined block 5 at the bottom of the sealing ring tube 4, a flow block 6 slidably arranged on the side of the protruding inclined block 5, a first threaded groove 7 on the side of the flow block 6, an unlocking rotary cylinder 8 installed on the inner side of the flow block 6, an assembly groove 9 on the top of the unlocking rotary cylinder 8, a pressure device 10 installed in the assembly groove 9, and a second threaded ring 11 on the bottom side of the pressure device 10. When the pressure detection device is installed in the assembly groove 9, the unlocking rotary cylinder 8 is tightened, so that the unlocking rotary cylinder 8 is threadedly connected to the flow block 6, causing the flow block 6 to slide in the sealing ring tube 4, thereby enabling the inside of the pipe to be connected to the outside, providing a basis for subsequent pressure detection.
[0018] The top of the unlocking rotary cylinder 8 is fixedly installed with a hexagonal bolt head 12, and the side of the unlocking rotary cylinder 8 is fixedly installed with a sealing slider 13, and there are two sets of sealing sliders 13.
[0019] The inner ring pipe of the sealing ring pipe 4 has a sealing groove 14 on its side, which is slidably connected to the sealing slider 13. The bottom of the protruding inclined block 5 has a concave groove 15. The bottom of the flow block 6 is fixedly installed with a connecting block 16, which is inserted into the concave groove 15. The top of the connecting block 16 is equipped with a sealing ring 17. The multi-structure sealing design, including the sliding connection of the sealing groove 14 and the sealing slider 13, the insertion of the connecting block 16 and the concave groove 15, and the sealing ring 17, can improve the sealing effect between the unlocking rotating cylinder 8 and the sealing ring pipe 4, avoid pressure leakage, and improve the overall stability and reliability of the pipeline system.
[0020] The unlocking drum 8 has a first threaded ring 18 on its side, which engages with the first threaded groove 7. The bottom of the unlocking drum 8 has a pressure testing port 19, which connects to the inside of the flow block 6. The side of the flow block 6 has a flow passage 20. The inside of the unlocking drum 8 has a second threaded groove 21, which engages with the second threaded ring 11. The flow passage 20 connects to the pressure device 10 and the inside of the tee through the pressure testing port 19, allowing the fluid to fully contact the detection probe of the pressure device 10, ensuring the accuracy and timeliness of pressure detection, and enabling rapid and accurate acquisition of fluid pressure changes in the pipeline.
[0021] In use, firstly, when it is necessary to test the pressure inside the tee body 1, insert the pressure device 10 into the assembly groove 9. Then, by engaging the second threaded ring 11 with the second threaded groove 21, the pressure device 10 is connected to the unlocking cylinder 8. Next, use the hexagonal bolt head 12 to rotate the unlocking cylinder 8. Since the unlocking cylinder 8 and the flow block 6 are connected by threads, during the rotation of the unlocking cylinder 8, the flow block 6 can be driven to slide in the sealing ring tube 4. The flow block 6 deviates from the sealing ring tube 4, and the flow port 20 at the bottom connects with the fluid inside the tee pipe. Connect the pressure tester through the pressure test port 19 to complete the assembly and setup of the pressure device 10. The structure is simple, and it is convenient to install and disassemble the pressure tester. It can quickly and accurately obtain the pressure changes of the fluid in the pipeline. When pressure testing is not required, simply reverse the hexagonal head to drive the flow block 66 to slide in the sealing ring pipe 44. At this time, the flow block 6 and the concave groove 15 of the docking block 16 are engaged. The sealing ring 17 set on the top of the docking block 16 is in close contact with the bottom of the protruding inclined block 5, improving the sealing effect and completing the sealing operation of the overall installation structure of the pressure device 10.
[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A seamless steel tee for assembling a pressure testing device, characterized in that: The device includes a three-way body (1), with an installation ring (2) fixedly fitted at the pipe opening of the three-way body (1). The top of the installation ring (2) has an insertion hole (3), and the bottom of the insertion hole (3) is fixedly installed with a sealing ring tube (4). The sealing ring tube (4) is fixedly installed on the inner side of the installation ring (2). The bottom of the sealing ring tube (4) is provided with a protruding inclined block (5). The side of the protruding inclined block (5) is slidably provided with a flow block (6). The side of the flow block (6) is provided with a first threaded groove (7), and the inner side of the flow block (6) is provided with an unlocking rotary cylinder (8). The top of the unlocking rotary cylinder (8) is provided with an assembly groove (9), and the assembly groove (9) is provided with a pressure device (10). The bottom side of the pressure device (10) is provided with a second threaded ring (11).
2. A seamless steel tee for assembling a pressure detection device according to claim 1, characterized in that: The top of the unlocking rotary cylinder (8) is fixedly installed with a hexagonal bolt head (12), and the side of the unlocking rotary cylinder (8) is fixedly installed with a sealing slider (13), and there are two sets of sealing sliders (13).
3. A seamless steel tee for assembling a pressure detection device according to claim 2, characterized in that: The inner ring pipe (4) has a sealing groove (14) on its side, and the sealing groove (14) is slidably connected to the sealing slider (13). The bottom of the protruding inclined block (5) has a concave groove (15).
4. A seamless steel tee for assembling a pressure detection device according to claim 3, characterized in that: The bottom of the flow block (6) is fixedly installed with a docking block (16), which is inserted into the concave groove (15), and a sealing ring (17) is installed on the top of the docking block (16).
5. A seamless steel tee for assembling a pressure detection device according to claim 4, characterized in that: The side of the unlocking drum (8) is provided with a first threaded ring (18), and the first threaded ring (18) is engaged with the first threaded groove (7). The bottom of the unlocking drum (8) is provided with a pressure measuring port (19), and the bottom of the pressure measuring port (19) is connected to the inside of the flow block (6).
6. A seamless steel tee for assembling a pressure detection device according to claim 5, characterized in that: The flow block (6) has a flow port (20) on its side, and the inner side of the unlocking rotary drum (8) is provided with a second threaded groove (21), which is engaged with the second threaded ring (11).