Integrated dual lock relief valve

Abstract

The utility model discloses an integrated double locking relief valve, including two single lock valves, two single lock valves's outer end all are connected with double lock valve connecting end, and the sealed installation of two single lock valves has DBB connecting end, and DBB connecting end is connected with relief valve through relief valve threaded connection end, and the valve body seal no.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to an integrated double-locking relief valve. Background Technology

[0002] In industrial piping systems, it is often necessary to reliably isolate the upstream medium during maintenance, repair, or replacement of downstream equipment to ensure operational safety. After prolonged use, the single sealing surface of a typical single valve may wear or become clogged with foreign objects, leading to incomplete sealing and leakage risks. For toxic, harmful, flammable, or high-pressure media, such leaks are extremely dangerous.

[0003] To solve this problem, a common approach is to use two dual valves connected in series with a relief valve installed between them. However, this solution requires the installation of three separate valves, which takes up a lot of space, has high installation costs, and the increased number of joints leads to more potential leakage points.

[0004] Therefore, the industry needs a compact valve that integrates dual isolation and intermediate cavity venting functions to improve the safety, reliability and economy of the system. Utility Model Content

[0005] To solve the above problems, this utility model provides an integrated double-locking relief valve.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is: an integrated double-locking relief valve, including two single-locking valves, the outer ends of the two single-locking valves are connected to the connection end of the double-locking valve, a DBB connection end is sealed between the two single-locking valves, the DBB connection end is connected to the relief valve through the threaded connection end of the relief valve, a valve body seal is provided between the DBB connection end and the threaded connection end of the relief valve, the relief valve is connected to the relief valve connection end, valve seat support and valve seat are provided at both ends of the single-locking valve, and a valve ball is provided inside the single-locking valve.

[0007] Furthermore, the outer ends of both single-lock valves are connected to the double-lock valve connection end via bolts.

[0008] Furthermore, a DBB connection is bolted between the two single-lock valves.

[0009] Furthermore, a valve body seal is provided between the single-lock valve and the DBB connection end.

[0010] Furthermore, the valve seat is located within the valve seat support.

[0011] Furthermore, the valve ball is located between the valve seats on both sides.

[0012] The beneficial effects of this utility model are: 1. Excellent ease of maintenance: Both the double-lock valve and the relief valve adopt a three-piece structure. When it is necessary to clean or replace the valve seat or valve stem seal, simply loosen the connecting bolts to easily remove the internal valve ball and valve seat, which greatly simplifies the maintenance process, shortens downtime, and reduces maintenance costs.

[0013] 2. High degree of standardization and versatility: The double-lock valve and the relief valve use the same type (three-piece) ball valve, which makes the core components have common or similar dimensions, reduces the types of spare parts, facilitates warehouse management, and also facilitates installation and replacement. Generally, only different connection ends need to be designed according to customer requirements.

[0014] 3. Reliable sealing and long service life: Three-piece ball valves typically adopt a modular seat design, with uniform preload and better sealing performance; double-lock valves adopt a fixed ball structure, with low torque, suitable for higher pressure and large diameter; relief valves adopt a floating ball structure, which is compact and cost-effective. The combination of the two achieves an optimal balance between performance and cost.

[0015] 4. High safety: The double-lock valve provides two independent shut-off seals, and the relief valve can safely drain the isolation medium between the two valves. The triple protection greatly improves the safety of the system. The easy maintenance feature also ensures that the valve can be in the best working condition for a long time, reducing the potential risks caused by untimely maintenance. Attached Figure Description

[0016] Figure 1 This is the front view of this utility model; Figure 2 This is a side view of the present invention; Figure 3 This is an isometric drawing of this utility model; Figure 4 yes Figure 1 A magnified view of point A.

[0017] The components are: 1. Single lock valve; 2. Relief valve; 3. DBB connection end; 4. Bolt; 5. Threaded connection end of relief valve; 6. Valve body seal one; 7. Valve body seal two; 8. Valve seat support; 9. Valve seat; 10. Valve ball; 11. Relief valve connection end; 12. Double lock valve connection end. Detailed Implementation

[0018] The following is in conjunction with the appendix Figure 1-4 The technical solution of this utility model has been clearly and completely described. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] An integrated double-locking relief valve includes two single-locking valves 1. The outer ends of the two single-locking valves 1 are connected to the double-locking valve connection end 12 by bolts 4. A DBB connection end 3 is installed between the two single-locking valves 1 by bolts 4. A valve body seal 6 is provided between the single-locking valve 1 and the DBB connection end 3. The DBB connection end 3 is connected to the relief valve 2 through the relief valve threaded connection end 5. A valve body seal 7 is provided between the DBB connection end 3 and the relief valve threaded connection end 5. The relief valve 2 is connected to the relief valve connection end 11. Both ends of the single-locking valve 1 are provided with valve seat supports 8 and valve seats 9. The valve seats 9 are located inside the valve seat supports 8. A valve ball 10 is provided inside the single-locking valve 1. The valve ball 10 is located between the valve seats 9 on both sides.

[0020] Under normal operating conditions, the valve balls 10 in the two single-lock valves 1 are connected, and the medium flows through the double-lock valve connection end 12, the single-lock valve 1, and the DBB connection end 3; the valve seat 9 seals the valve balls 10 with the valve seat support 8, and the valve body seal one 6 and valve body seal two 7 respectively seal the gaps between the single-lock valve 1 and the DBB connection end 3 and between the DBB connection end 3 and the threaded connection end 5 of the relief valve, ensuring reliable sealing.

[0021] During maintenance / emergency, the valve balls 10 of the two single-lock valves 1 are closed to achieve double isolation. The relief valve 2 is opened, and the medium remaining in the DBB connection end 3 is discharged through the threaded connection end 5 of the relief valve and the relief valve 2 through the relief valve connection end 11, emptying the medium in the intermediate cavity. The integrated structure reduces leakage points, and the combination of double locking and relief function improves safety. Moreover, the valve balls 10, valve seats 9 and other components can be disassembled and maintained by loosening the bolts 4, making maintenance convenient.

[0022] The embodiments described above are merely preferred embodiments of this utility model, and not all feasible embodiments of this utility model. For those skilled in the art, any obvious modifications made without departing from the principles and spirit of this utility model should be considered to be included within the scope of protection of the claims of this utility model. Although this utility model has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of this utility model. In particular, as long as there is no technical conflict, the features in the embodiments disclosed in this utility model can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, this utility model is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An integrated double-locking relief valve, characterized in that, It includes two single-lock valves, the outer ends of which are connected to the connection end of the double-lock valve. A DBB connection end is sealed between the two single-lock valves. The DBB connection end is connected to the relief valve through the threaded connection end of the relief valve. A valve body seal is provided between the DBB connection end and the threaded connection end of the relief valve. The relief valve is connected to the connection end of the relief valve. Both ends of the single-lock valve are provided with valve seat support and valve seat. A valve ball is provided inside the single-lock valve.

2. The integrated double-locking relief valve according to claim 1, characterized in that, The outer ends of both single-lock valves are connected to the double-lock valve connection end by bolts.

3. The integrated double-locking relief valve according to claim 1, characterized in that, The two single-lock valves are connected by a DBB connection end via bolts.

4. The integrated double-locking relief valve according to claim 1, characterized in that, A valve body seal is provided between the single-lock valve and the DBB connection end.

5. The integrated double-locking relief valve according to claim 1, characterized in that, The valve seat is located within the valve seat support.

6. The integrated double-locking relief valve according to claim 1, characterized in that, The valve ball is located between the valve seats on both sides.

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