CN2761688Y - Extension high water head rubber water seal possessing internal packed rigid plate - Google Patents

Abstract

The utility model relates to a telescopic high-head rubber water seal with an inner package of rigid plates, which comprises a head (2), two limb arms (4), two wing heads (5), the bottom of the head (2) and the two limb arms ( 4) connection, the two ends of the two limb arms (4) are respectively connected with the two wing heads (5); the inside of the head (2) is provided with a rigid plate (3). As a water sealing rubber, its hardness should not be too high, otherwise it will affect the water tightness of the sealing water. Therefore, there is a rigid plate inside the head of the utility model, and the rigid plate is an auxiliary part that strengthens the head against the lateral reservoir water pressure, thereby reducing the outward deviation of the head, and the rigid plate basically does not affect the water seal head stretching deformation. The utility model combines the strong anti-shear ability of the rigid plate with the inherent flexibility of the head. The water seal has the water tightness of the conventional rubber water seal, which significantly improves the ability of the head to resist deviation and has a long service life.

Description

Retractable high head rubber water seal with inner rigid sheet

technical field

The utility model relates to a rubber water seal used for blocking water leakage of holes and gates under high water head (high pressure), in particular to a retractable high water head rubber water seal.

Background technique

Along with the continuous development of high water head drainage structures, the water stop problem of scupper holes and tunnel gates is becoming more and more prominent. Under the action of high water head (high pressure), water leakage in the gate will not only cause unnecessary loss of water resources, but also may form crevice flow, resulting in building cavitation and gate vibration, threatening the safety of the project.

At present, there are mainly two types of water-stops for high-head gates at home and abroad: tight-pressed water-stops and telescopic water-stops.

The compression type water-stop form is to move the gate panel forward to press the water seal head to seal the water through the eccentric hinge rotation. The disadvantage of this water-stop form is: when the total water pressure of the gate is very high, the manufacturing of the eccentric hinge It's technically difficult.

The form of telescopic water-stop is to apply a certain back pressure on the back of the water seal to make the water seal stretch outward and press the head of the water seal to seal the water. The form of telescopic water-stop does not have high requirements for the gate, and the gate generally adopts an ordinary garden column. Hinge, more economical.

"People's Yangtze River" in November 2002 (Volume 33, No. 11) on pages 32-34, "Discussion on the Characteristics of Pressurized and Telescopic Water Seals", introduced the water seals used in the form of telescopic water seals. The water seals used in the telescopic water-stop form are generally ring-shaped, and are arranged around the drain holes and holes. Although the section types of water seals are different, they are generally dominated by "mountain"-shaped sections; their structures mainly include rubber seals. Head, two limb arms, two wing heads, the bottom of the head is connected with the two limb arms, and the two ends of the two limb arms are respectively connected with the two wing heads.

The principle of the telescopic water-stop form is: when the gate is closed, pressurize the pressure chamber (pressure bag) on the back of the water seal, so that the head of the water seal is stretched out and pressed tightly against the gate panel, and a certain pressure is generated. The amount of compression, so as to achieve the purpose of water stop. There are two main characteristics of the telescopic water-stop applied to high-head gate water-stop: 1. It can adapt to the deformation of the gate. When the gate panel is subjected to water pressure, the gate will usually produce elastic deformation, coupled with the influence of machining accuracy, installation accuracy and temperature changes, the gate will move backward and cause the water-stop rubber to separate from the gate panel, resulting in crevice flow. With the help of back pressure, the telescopic water seal can make the water seal head better adapt to the deformation and press tightly on the gate panel, so as to play a good role in water sealing; 2. Reduce the opening and closing capacity of the gate and prolong the service life of the rubber. This type of water seal cancels the back pressure before the gate is opened, and the head of the rubber head retracts to separate from the gate panel, thereby reducing the opening and closing force of the gate and prolonging the service life of the water seal rubber.

However, due to technical limitations, the strength and hardness of the head rubber is limited at present. When the water head exceeds 100 meters, the offset of the ordinary telescopic water-stop rubber head under high pressure is relatively large, which will cause Cause: 1. Affect the service life of the water seal; 2. Reduce the water sealing effect of the water seal; 3. It will cause the head of the rubber head to be unable to retract, affecting the normal operation of the water seal.

Contents of the invention

The technical problem to be solved by the utility model is: to provide a telescopic high-water head rubber water seal with a rigid board inside. The rubber water seal has long service life, good water tightness, and small displacement under high pressure.

The technical solution adopted by the utility model to solve the problems of the technologies described above is:

A telescopic high-head rubber water seal with a rigid plate inside, which includes a head, two arms, and two wing heads. The bottom of the head is connected to the two arms, and the two ends of the arms are respectively connected to the two wing heads; There are rigid boards.

In the above solution, the rigid plate is parallel to the plane formed by the center line of the head.

In the above solution, the rigid plate is arranged on the centerline of the head.

In the above solution, the rigid plate is arranged on one side of the centerline of the head.

In the above solution, the rigid plates are arranged on both sides of the centerline of the head.

In the above solution, the rigid plate is ring-shaped.

In the above solution, the rigid plate is arranged in sections inside the head.

Compared with the prior art, the utility model has the following advantages:

1. As a water sealing rubber, its hardness should not be too high, otherwise it will affect the water tightness of the sealing water. Therefore, there is a rigid plate inside the head of the utility model, and the rigid plate is an auxiliary part that strengthens the head against the lateral reservoir water pressure, thereby reducing the outward deviation of the head, and the rigid plate basically does not affect the water seal head stretching deformation. The utility model combines the strong anti-shear ability of the rigid plate with the inherent flexibility of the head. The water seal has the water tightness of the conventional rubber water seal, which significantly improves the ability of the head to resist deviation and has a long service life.

2. The surface formed by the rigid plate and the center line of the head is parallel, the force of the head is reasonable, and the offset of the head under the action of high water head (high pressure) is small.

3. The rigid plate is set on the center line of the head, which can improve the ability of the head to resist deviation and shear deformation.

4. Rigid plates are arranged on both sides of the center line of the head, which can improve the ability of the head to resist deviation and shear deformation.

5. The rigid plate is set on one side of the center line of the head, which can support the back side of the head to overcome the water pressure and reduce the offset of the head.

6. The rigid plate is ring-shaped, and it can also be arranged inside the head in sections according to the situation.

7. Simple processing and manufacturing, easy to use.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the utility model embodiment 1

Figure 2 is a cross-sectional view of A-A in Figure 1

Fig. 3 is a schematic diagram of the use state (head retraction) of Embodiment 1 of the present utility model

Fig. 4 is a schematic diagram of the use state (head protruding) of Embodiment 1 of the present utility model

Fig. 5 is the cross-sectional view of the utility model embodiment 2

Fig. 6 is the cross-sectional view of the utility model embodiment 3

Fig. 7 is the overall structure schematic diagram of the utility model embodiment 4

Detailed ways

Embodiment 1 of the present utility model as shown in Figure 1, it is an annular rubber water seal 1 that is set according to the size and layout conditions of the plugging target hole, hole or gate, as shown in Figure 2, the rubber water seal includes a head 2 , two limbs arm 4, two wing head 5. The bottom of the head 2 is connected with the two limb arms 4, and the two ends of the two limb arms 4 are respectively connected with the two wing heads 5. The head 2 is made of high-strength and high-hardness rubber material, so that it can bear relatively large contact stress. The limb arm 4 is made of rubber that has good elasticity and can meet the water seal expansion and contraction requirements. The performance of the material of the water-sealed wing head 5 should be between the former two. It should have good flexibility and high hardness, so as to ensure that the two wing heads can form a pressure chamber after being compressed. The inside of the head 2 is provided with a rigid board 3 , which is parallel to the surface formed by the center line of the head 2 , and the rigid board 3 is arranged on the center line of the head 2 . Rigid plate 3 is also annular. Rigid plate 3 can be steel plate, alloy plate, high-strength plastic plate or other composite plates.

As shown in Figures 3 and 4, the direction of the arrow in the figure is the direction of reservoir water pressure. The water seal 1 of the utility model is generally arranged at the suddenly expanded door groove, and related components also include a base 10 , a pressing plate 6 , a connecting bolt 7 , a gate panel 11 , and a gate groove 12 . At first the base 10 is firmly arranged on the surface of the gate groove 12, and the pressure hole 8 on the back base 10 of the water seal 1 is connected with the back pressurization (reservoir water pressure or standby water pressure) system. Also establish drainage holes on the sealing base 10, so that the pressure on the back of the water seal is removed when necessary; the annular water seal 1 of the utility model is installed, and the two wing heads 5 of the water seal are compressed by the connecting bolt 7 with the pressing plate 6 to form a water seal. Seal back pressure chamber 9, so just finished the installation and arrangement work of rubber water seal.

The working process of the head of the utility model is as follows: the gate is lowered to block the water, and the gap between the panel 11 and the water seal head 2 shoots water outward; the pressurization system on the back of the water seal is started, and the pressure chamber 9 is charged through the pressure hole 8 , so that the water seal head 2 stretches out and presses on the gate panel 11 (as shown in Figure 4), a certain amount of compression is generated, so as to achieve the purpose of water sealing. The offset is small. When it is necessary to open the gate, close the pressure hole 8, open the drain hole to remove the pressure on the back of the water seal 1, and under the combined action of the reservoir water pressure and the elastic force of the rubber, the water seal head 2 leaves the gate panel 11 and retracts freely Original position (as Fig. 3), at this moment the slit between the panel 11 and the water-sealed head 2 shoots water outwards again, lifts the gate, and the building hole, the hole drains outwards. Reciprocating in this way, the utility model telescopic high-head rubber water seal 1 can cooperate with the gate to realize opening and closing freely.

As shown in FIG. 5 , the utility model embodiment 2 has its rigid plates 3 arranged on both sides of the centerline of the head 2 .

As shown in Figure 6, Embodiment 3 of the present utility model, the direction of the arrow in the figure is the direction of reservoir water pressure. Its rigid plate 3 is arranged on one side of the centerline of the head 2 .

As shown in Figure 7, embodiment 4 of the present utility model, its rigid board 3 is arranged inside the sealing head 2 in sections.

The above-mentioned embodiment of the utility model, the working force of the head 1 is reasonable, the processing and manufacturing are simple, the offset of the head can be effectively reduced, the faults in the operation of the water seal are greatly reduced, and the service life of the telescopic water seal is extended, which has great advantages. Strong practical value. This water seal can be used in engineering fields such as water conservancy, hydropower, construction and machinery.

Claims (7)

1, have the telescopic high water head rubber waterstop of interior bag rigidity sheet material, it comprises end socket (2), two limb arms (4), both wings head (5), and the bottom of end socket (2) is connected with two limb arms (4), and two limb arm (4) two ends are connected with both wings head (5) respectively; It is characterized in that: end socket (2) inside is provided with rigid slab (3).

2, water seal as claimed in claim 1 is characterized in that: rigid slab (3) is parallel with the face that the center line of end socket (2) is formed.

3, water seal as claimed in claim 2 is characterized in that: rigid slab (3) is arranged on the center line of end socket (2).

4, water seal as claimed in claim 2 is characterized in that: rigid slab (3) is arranged on the both sides of the center line of end socket (2).

5, water seal as claimed in claim 2 is characterized in that: rigid slab (3) is arranged on a side of the center line of end socket (2).

6, water seal as claimed in claim 2 is characterized in that: rigid slab (3) is annular.

7, water seal as claimed in claim 2 is characterized in that: rigid slab (3) segmentation is arranged on end socket (2) inside.

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