CN204328331U - A kind of high pressure flange seal clamp - Google Patents

Abstract

The utility model discloses a high-pressure flange sealing fixture, which comprises two symmetrically arranged semi-circular sealing grooves, a fixed connection ear plate is respectively arranged on the outer sides of the two ends of the sealing groove, and the fixed connection ear plate is provided with The outer wall of the sealing groove is uniformly provided with several injection holes, the inner wall of the sealing groove is provided with an arc-shaped tongue snap ring along its circumferential direction, and a packing ring groove is respectively opened on both sides of the tongue snap ring. There are several outlet holes on the tongue snap ring, the outlet holes run through the tongue snap ring, communicate with the packing ring grooves on both sides of the tab snap ring, and communicate with the injection hole, the two sealing grooves The connection between the ear plates is fastened and fixed by fastening bolts. The utility model effectively improves the success rate of pressure sealing of the flange when the opening of the high-pressure flange is large or the flange misalignment is large, and after the leakage is successfully sealed, it has good sealing performance and durability, avoiding the The economic losses caused by the shutdown and maintenance of continuous chemical production equipment.

Description

A high-pressure flange sealing fixture

technical field

The utility model belongs to the technical field of high-pressure flange leakage sealing, and in particular relates to a high-pressure flange sealing fixture.

Background technique

In large-scale chemical enterprises with continuous production, due to insufficient supply of raw materials, the load of the system is adjusted accordingly. At this time, the high-temperature and high-pressure flanges used for pipeline connection often leak when the pressure and temperature change, endangering the continuous production of the device. run. The usual method is to fasten the flange connection bolts online. When the fastening fails, only the traditional clamp-type pressure seal plugging is used to eliminate leaks and avoid parking losses. However, the outer edges of the paired flanges are due to forging , Installation, measurement errors, machining errors and other defects cause large dimensional deviations after the flanges are paired, and the amount of misalignment of the flanges under the stress of the pipeline is large. An effective close fit cannot be formed between them, resulting in failure of sealing, and the system is shut down for maintenance, resulting in huge economic losses.

Utility model content

The technical problem to be solved by the utility model is to provide a high-pressure flange sealing fixture for the above-mentioned deficiencies in the prior art. The production system is shut down for maintenance.

The technical scheme adopted by the utility model is: a high-pressure flange sealing fixture, including two symmetrically arranged semi-circular sealing grooves, and a fixed connection ear plate is respectively provided on the outer sides of the two ends of the sealing groove, and the fixed There are installation holes on the connecting lug plate, several injection holes are evenly opened on the outer wall of the sealing groove, and arc-shaped tongue snap rings are arranged on the inner wall of the sealing groove along its circumferential direction, and there are respectively openings on both sides of the tongue snap ring. A filler ring groove, the tongue snap ring has several agent outlet holes, the agent outlet holes run through the tongue snap ring, communicate with the filler ring grooves on both sides of the tongue snap ring, and communicate with the injection hole , the two sealing grooves are fastened and fixedly connected by fastening bolts to connect the lug plates.

Preferably, the number of the injection holes is the same as the number of fixing holes on the flange.

Preferably, a drug outlet hole is correspondingly provided at the location where the agent injection hole is opened, and a drug outlet hole is also provided between the two agent injection holes.

Preferably, the injection hole at the position of the sealing groove close to the mounting plate is opened on the end surface of the sealing groove.

The beneficial effects of the utility model are: the utility model has a simple structure, which effectively improves the success rate of the flange with pressure plugging and sealing when the high-pressure flange has a large opening or the flange misalignment is large, and after the leak sealing is successful, It has good sealing and durability, avoids the maintenance of continuous chemical production equipment, and ensures the safety of leak sealing operators during operation.

Description of drawings

Fig. 1 is a structural representation of the utility model;

Fig. 2 is a top view of the sealing groove of the present invention.

In the figure: 1. Sealing groove; 2. Fixed connection ear plate; 3. Mounting hole; 4. Injection hole; 5. Tongue snap ring; 6. Packing ring groove; 7. Dispensing hole.

Detailed ways

The utility model will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

Embodiment: As shown in Fig. 1 and Fig. 2, the utility model comprises two symmetrically arranged semi-circular sealing grooves 1, and a fixed connection ear plate 2 is respectively provided on the outer sides of the two ends of the sealing groove 1, and the fixed There are mounting holes 3 on the connecting lug plate 2, and the outer wall of the sealing groove 1 is uniformly provided with the same number of injection holes 4 as the fixing holes of the flange, and the inner wall of the sealing groove 1 is provided with an arc-shaped tongue snap ring along its circumferential direction 5. A packing ring groove 6 is opened on both sides of the tongue snap ring 5, and several agent outlet holes 7 are opened on the tongue snap ring 5, and the agent outlet holes 7 run through the tongue snap ring 5, and It communicates with the packing ring grooves 6 on both sides of the tongue snap ring 5 and communicates with the injection hole 4. The two sealing grooves 1 are connected by fastening bolts and fixedly connecting the ear plates 2; wherein the sealing groove 1 is provided with Correspondingly, the position of the injection hole 4 is provided with an outlet hole 7 on the tongue snap ring 5, and the tongue snap ring 5 between the two injection holes 4 is also provided with an outlet hole 7; the sealing groove 1 The injection hole 4 near the mounting plate is opened on the end face of the sealing groove 1.

The utility model fixes the sealing groove 1 on the gap of the flange through the tongue snap ring 5, and connects and fixes the two sealing grooves 1 through the fixed connection ear plate 2, and then injects the sealant into the injection hole 4 to seal The sealant enters the gap between the flange and the back of the sealing packing. As the gap between the flanges is filled and the pressure rises, part of the sealant will be squeezed out. By setting the agent outlet hole 7 and the packing ring groove 6, the The extruded sealant enters the packing ring groove 6 through the agent outlet hole 7, pushes the flexible packing in the packing ring groove 6 for a second time, lifts up and eliminates the gap, and makes it close to the end face of the flange, eliminating the problem caused by the injection hole. 4. Insufficient sealant enters, and all packing cannot be effectively piled up to form insufficient sealing cavity, so as to achieve effective sealing of flange leakage.

The utility model has a simple structure, and effectively improves the success rate of the flange with pressure plugging and sealing when the opening of the high-pressure flange is large or the flange misalignment is large, and has good sealing performance and durability after the leak sealing is successful. , avoiding the shutdown maintenance of continuous chemical production equipment, and ensuring the safety of leak sealing operators during operation.

Claims (4)

1. A high-pressure flange sealing fixture is characterized in that: it comprises two semicircular sealing grooves (1) that are arranged symmetrically, and a fixed connection ear plate (2) is respectively provided on the outer sides of the two ends of the sealing groove (1). ), the fixed connection ear plate (2) is provided with installation holes (3), the outer wall of the sealing groove (1) is evenly provided with several injection holes (4), and the inner wall of the sealing groove (1) is provided along its circumferential direction. There is an arc-shaped tongue snap ring (5), a packing ring groove (6) is opened on both sides of the tongue snap ring (5), and several agent outlet holes are opened on the tongue snap ring (5) (7), the agent outlet hole (7) runs through the tongue snap ring (5), and communicates with the packing ring grooves (6) on both sides of the tab snap ring (5), and communicates with the injection hole (4) , the two sealing grooves (1) are fastened and fixedly connected by fastening bolts to connect the ear plates (2). 2. The high-pressure flange sealing fixture according to claim 1, characterized in that: the number of the injection holes (4) is the same as the number of fixing holes on the flange. 3. The high-pressure flange sealing jig according to claim 1, characterized in that: the agent injection hole (4) is provided with an agent outlet hole (7), and there is a gap between the two agent injection holes (4). A drug outlet hole (7) is provided. 4. The high-pressure flange sealing fixture according to claim 1, characterized in that: the sealing groove (1) is close to the injection hole (4) at the position of the fixed connection ear plate (2), and is opened in the sealing groove (1) ) on the end face.